aboutsummaryrefslogtreecommitdiffstats
path: root/src/gallium/frontends/glx
diff options
context:
space:
mode:
authorMarek Olšák <[email protected]>2019-12-03 18:01:31 -0500
committerMarek Olšák <[email protected]>2020-05-13 13:46:53 -0400
commitd6287a94b697ffe12a4e576a38943cdf4e90cdb0 (patch)
treebb84357d98dc74412e983693e09875bb355b467e /src/gallium/frontends/glx
parentb408734e5e2fe1e1ef08080c4425ad8a7ed33579 (diff)
gallium: rename 'state tracker' to 'frontend'
Acked-by: Eric Anholt <[email protected]> Acked-by: Alyssa Rosenzweig <[email protected]> Acked-by: Pierre-Eric Pelloux-Prayer <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4902>
Diffstat (limited to 'src/gallium/frontends/glx')
-rw-r--r--src/gallium/frontends/glx/xlib/Makefile.sources9
-rw-r--r--src/gallium/frontends/glx/xlib/SConscript18
-rw-r--r--src/gallium/frontends/glx/xlib/glx_api.c2777
-rw-r--r--src/gallium/frontends/glx/xlib/glx_getproc.c212
-rw-r--r--src/gallium/frontends/glx/xlib/glx_usefont.c373
-rw-r--r--src/gallium/frontends/glx/xlib/meson.build27
-rw-r--r--src/gallium/frontends/glx/xlib/xm_api.c1561
-rw-r--r--src/gallium/frontends/glx/xlib/xm_api.h398
-rw-r--r--src/gallium/frontends/glx/xlib/xm_public.h48
-rw-r--r--src/gallium/frontends/glx/xlib/xm_st.c411
-rw-r--r--src/gallium/frontends/glx/xlib/xm_st.h66
11 files changed, 5900 insertions, 0 deletions
diff --git a/src/gallium/frontends/glx/xlib/Makefile.sources b/src/gallium/frontends/glx/xlib/Makefile.sources
new file mode 100644
index 00000000000..9e31a70eb3e
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/Makefile.sources
@@ -0,0 +1,9 @@
+C_SOURCES := \
+ glx_api.c \
+ glx_getproc.c \
+ glx_usefont.c \
+ xm_api.c \
+ xm_api.h \
+ xm_public.h \
+ xm_st.c \
+ xm_st.h
diff --git a/src/gallium/frontends/glx/xlib/SConscript b/src/gallium/frontends/glx/xlib/SConscript
new file mode 100644
index 00000000000..1d5dd1df4fd
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/SConscript
@@ -0,0 +1,18 @@
+#######################################################################
+# SConscript for xlib state_tracker
+
+Import('*')
+
+env = env.Clone()
+
+env.Append(CPPPATH = [
+ '#/src',
+ '#/src/mapi',
+ '#/src/mesa',
+])
+
+st_xlib = env.ConvenienceLibrary(
+ target = 'st_xlib',
+ source = env.ParseSourceList('Makefile.sources', 'C_SOURCES')
+)
+Export('st_xlib')
diff --git a/src/gallium/frontends/glx/xlib/glx_api.c b/src/gallium/frontends/glx/xlib/glx_api.c
new file mode 100644
index 00000000000..281111bdfb0
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/glx_api.c
@@ -0,0 +1,2777 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * "Fake" GLX API implemented in terms of the XMesa*() functions.
+ */
+
+
+
+#define GLX_GLXEXT_PROTOTYPES
+#include "GL/glx.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xmd.h>
+#include <GL/glxproto.h>
+
+#include "xm_api.h"
+#include "main/errors.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+/* An "Atrribs/Attribs" typo was fixed in glxproto.h in Nov 2014.
+ * This is in case we don't have the updated header.
+ */
+#if !defined(X_GLXCreateContextAttribsARB) && \
+ defined(X_GLXCreateContextAtrribsARB)
+#define X_GLXCreateContextAttribsARB X_GLXCreateContextAtrribsARB
+#endif
+
+/* This indicates the client-side GLX API and GLX encoder version. */
+#define CLIENT_MAJOR_VERSION 1
+#define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
+
+/* This indicates the server-side GLX decoder version.
+ * GLX 1.4 indicates OpenGL 1.3 support
+ */
+#define SERVER_MAJOR_VERSION 1
+#define SERVER_MINOR_VERSION 4
+
+/* Who implemented this GLX? */
+#define VENDOR "Brian Paul"
+
+#define EXTENSIONS \
+ "GLX_MESA_copy_sub_buffer " \
+ "GLX_MESA_pixmap_colormap " \
+ "GLX_MESA_release_buffers " \
+ "GLX_ARB_create_context " \
+ "GLX_ARB_create_context_profile " \
+ "GLX_ARB_get_proc_address " \
+ "GLX_EXT_create_context_es_profile " \
+ "GLX_EXT_create_context_es2_profile " \
+ "GLX_EXT_texture_from_pixmap " \
+ "GLX_EXT_visual_info " \
+ "GLX_EXT_visual_rating " \
+ /*"GLX_SGI_video_sync "*/ \
+ "GLX_SGIX_fbconfig " \
+ "GLX_SGIX_pbuffer "
+
+#define DEFAULT_DIRECT GL_TRUE
+
+
+/** XXX this could be based on gallium's max texture size */
+#define PBUFFER_MAX_SIZE 16384
+
+
+/**
+ * The GLXContext typedef is defined as a pointer to this structure.
+ */
+struct __GLXcontextRec
+{
+ Display *currentDpy;
+ GLboolean isDirect;
+ GLXDrawable currentDrawable;
+ GLXDrawable currentReadable;
+ XID xid;
+
+ XMesaContext xmesaContext;
+};
+
+
+
+static pipe_tsd ContextTSD;
+
+/** Set current context for calling thread */
+static void
+SetCurrentContext(GLXContext c)
+{
+ pipe_tsd_set(&ContextTSD, c);
+}
+
+/** Get current context for calling thread */
+static GLXContext
+GetCurrentContext(void)
+{
+ return pipe_tsd_get(&ContextTSD);
+}
+
+
+
+/**********************************************************************/
+/*** GLX Visual Code ***/
+/**********************************************************************/
+
+#define DONT_CARE -1
+
+
+static XMesaVisual *VisualTable = NULL;
+static int NumVisuals = 0;
+
+
+
+/* Macro to handle c_class vs class field name in XVisualInfo struct */
+#if defined(__cplusplus) || defined(c_plusplus)
+#define CLASS c_class
+#else
+#define CLASS class
+#endif
+
+
+
+/*
+ * Test if the given XVisualInfo is usable for Mesa rendering.
+ */
+static GLboolean
+is_usable_visual( XVisualInfo *vinfo )
+{
+ switch (vinfo->CLASS) {
+ case StaticGray:
+ case GrayScale:
+ /* Any StaticGray/GrayScale visual works in RGB or CI mode */
+ return GL_TRUE;
+ case StaticColor:
+ case PseudoColor:
+ /* Any StaticColor/PseudoColor visual of at least 4 bits */
+ if (vinfo->depth>=4) {
+ return GL_TRUE;
+ }
+ else {
+ return GL_FALSE;
+ }
+ case TrueColor:
+ case DirectColor:
+ /* Any depth of TrueColor or DirectColor works in RGB mode */
+ return GL_TRUE;
+ default:
+ /* This should never happen */
+ return GL_FALSE;
+ }
+}
+
+
+/*
+ * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
+ * configuration in our list of GLX visuals.
+ */
+static XMesaVisual
+save_glx_visual( Display *dpy, XVisualInfo *vinfo,
+ GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
+ GLboolean stereoFlag,
+ GLint depth_size, GLint stencil_size,
+ GLint accumRedSize, GLint accumGreenSize,
+ GLint accumBlueSize, GLint accumAlphaSize,
+ GLint level, GLint numAuxBuffers, GLuint num_samples )
+{
+ GLboolean ximageFlag = GL_TRUE;
+ XMesaVisual xmvis;
+ GLint i;
+ GLboolean comparePointers;
+
+ if (!rgbFlag)
+ return NULL;
+
+ if (dbFlag) {
+ /* Check if the MESA_BACK_BUFFER env var is set */
+ char *backbuffer = getenv("MESA_BACK_BUFFER");
+ if (backbuffer) {
+ if (backbuffer[0]=='p' || backbuffer[0]=='P') {
+ ximageFlag = GL_FALSE;
+ }
+ else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
+ ximageFlag = GL_TRUE;
+ }
+ else {
+ _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
+ }
+ }
+ }
+
+ if (stereoFlag) {
+ /* stereo not supported */
+ return NULL;
+ }
+
+ if (stencil_size > 0 && depth_size > 0)
+ depth_size = 24;
+
+ /* Comparing IDs uses less memory but sometimes fails. */
+ /* XXX revisit this after 3.0 is finished. */
+ if (getenv("MESA_GLX_VISUAL_HACK"))
+ comparePointers = GL_TRUE;
+ else
+ comparePointers = GL_FALSE;
+
+ /* Force the visual to have an alpha channel */
+ if (rgbFlag && getenv("MESA_GLX_FORCE_ALPHA"))
+ alphaFlag = GL_TRUE;
+
+ /* First check if a matching visual is already in the list */
+ for (i=0; i<NumVisuals; i++) {
+ XMesaVisual v = VisualTable[i];
+ if (v->display == dpy
+ && v->mesa_visual.level == level
+ && v->mesa_visual.numAuxBuffers == numAuxBuffers
+ && v->mesa_visual.samples == num_samples
+ && v->ximage_flag == ximageFlag
+ && v->mesa_visual.doubleBufferMode == dbFlag
+ && v->mesa_visual.stereoMode == stereoFlag
+ && (v->mesa_visual.alphaBits > 0) == alphaFlag
+ && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
+ && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
+ && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
+ && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
+ && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
+ && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
+ /* now either compare XVisualInfo pointers or visual IDs */
+ if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
+ || (comparePointers && v->vishandle == vinfo)) {
+ return v;
+ }
+ }
+ }
+
+ /* Create a new visual and add it to the list. */
+
+ xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
+ stereoFlag, ximageFlag,
+ depth_size, stencil_size,
+ accumRedSize, accumBlueSize,
+ accumBlueSize, accumAlphaSize, num_samples, level,
+ GLX_NONE_EXT );
+ if (xmvis) {
+ /* Save a copy of the pointer now so we can find this visual again
+ * if we need to search for it in find_glx_visual().
+ */
+ xmvis->vishandle = vinfo;
+ /* Allocate more space for additional visual */
+ VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
+ /* add xmvis to the list */
+ VisualTable[NumVisuals] = xmvis;
+ NumVisuals++;
+ /* XXX minor hack, because XMesaCreateVisual doesn't support an
+ * aux buffers parameter.
+ */
+ xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
+ }
+ return xmvis;
+}
+
+
+/**
+ * Return the default number of bits for the Z buffer.
+ * If defined, use the MESA_GLX_DEPTH_BITS env var value.
+ * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
+ * XXX probably do the same thing for stencil, accum, etc.
+ */
+static GLint
+default_depth_bits(void)
+{
+ int zBits;
+ const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
+ if (zEnv)
+ zBits = atoi(zEnv);
+ else
+ zBits = 24;
+ return zBits;
+}
+
+static GLint
+default_alpha_bits(void)
+{
+ int aBits;
+ const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
+ if (aEnv)
+ aBits = atoi(aEnv);
+ else
+ aBits = 0;
+ return aBits;
+}
+
+static GLint
+default_accum_bits(void)
+{
+ return 16;
+}
+
+
+
+/*
+ * Create a GLX visual from a regular XVisualInfo.
+ * This is called when Fake GLX is given an XVisualInfo which wasn't
+ * returned by glXChooseVisual. Since this is the first time we're
+ * considering this visual we'll take a guess at reasonable values
+ * for depth buffer size, stencil size, accum size, etc.
+ * This is the best we can do with a client-side emulation of GLX.
+ */
+static XMesaVisual
+create_glx_visual( Display *dpy, XVisualInfo *visinfo )
+{
+ GLint zBits = default_depth_bits();
+ GLint accBits = default_accum_bits();
+ GLboolean alphaFlag = default_alpha_bits() > 0;
+
+ if (is_usable_visual( visinfo )) {
+ /* Configure this visual as RGB, double-buffered, depth-buffered. */
+ /* This is surely wrong for some people's needs but what else */
+ /* can be done? They should use glXChooseVisual(). */
+ return save_glx_visual( dpy, visinfo,
+ GL_TRUE, /* rgb */
+ alphaFlag, /* alpha */
+ GL_TRUE, /* double */
+ GL_FALSE, /* stereo */
+ zBits,
+ 8, /* stencil bits */
+ accBits, /* r */
+ accBits, /* g */
+ accBits, /* b */
+ accBits, /* a */
+ 0, /* level */
+ 0, /* numAux */
+ 0 /* numSamples */
+ );
+ }
+ else {
+ _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
+ return NULL;
+ }
+}
+
+
+
+/*
+ * Find the GLX visual associated with an XVisualInfo.
+ */
+static XMesaVisual
+find_glx_visual( Display *dpy, XVisualInfo *vinfo )
+{
+ int i;
+
+ /* try to match visual id */
+ for (i=0;i<NumVisuals;i++) {
+ if (VisualTable[i]->display==dpy
+ && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
+ return VisualTable[i];
+ }
+ }
+
+ /* if that fails, try to match pointers */
+ for (i=0;i<NumVisuals;i++) {
+ if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
+ return VisualTable[i];
+ }
+ }
+
+ return NULL;
+}
+
+
+/**
+ * Try to get an X visual which matches the given arguments.
+ */
+static XVisualInfo *
+get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
+{
+ XVisualInfo temp, *vis;
+ long mask;
+ int n;
+ unsigned int default_depth;
+ int default_class;
+
+ mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
+ temp.screen = scr;
+ temp.depth = depth;
+ temp.CLASS = xclass;
+
+ default_depth = DefaultDepth(dpy,scr);
+ default_class = DefaultVisual(dpy,scr)->CLASS;
+
+ if (depth==default_depth && xclass==default_class) {
+ /* try to get root window's visual */
+ temp.visualid = DefaultVisual(dpy,scr)->visualid;
+ mask |= VisualIDMask;
+ }
+
+ vis = XGetVisualInfo( dpy, mask, &temp, &n );
+
+ /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
+ * An SGI Infinite Reality system, for example, can have 30bpp pixels:
+ * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
+ */
+ if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
+ if (util_bitcount((GLuint) vis->red_mask ) <= 8 &&
+ util_bitcount((GLuint) vis->green_mask) <= 8 &&
+ util_bitcount((GLuint) vis->blue_mask ) <= 8) {
+ return vis;
+ }
+ else {
+ free((void *) vis);
+ return NULL;
+ }
+ }
+
+ return vis;
+}
+
+
+/*
+ * Retrieve the value of the given environment variable and find
+ * the X visual which matches it.
+ * Input: dpy - the display
+ * screen - the screen number
+ * varname - the name of the environment variable
+ * Return: an XVisualInfo pointer to NULL if error.
+ */
+static XVisualInfo *
+get_env_visual(Display *dpy, int scr, const char *varname)
+{
+ char value[100], type[100];
+ int depth, xclass = -1;
+ XVisualInfo *vis;
+
+ if (!getenv( varname )) {
+ return NULL;
+ }
+
+ strncpy( value, getenv(varname), 100 );
+ value[99] = 0;
+
+ sscanf( value, "%s %d", type, &depth );
+
+ if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
+ else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
+ else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
+ else if (strcmp(type,"StaticColor")==0) xclass = StaticColor;
+ else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
+ else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
+
+ if (xclass>-1 && depth>0) {
+ vis = get_visual( dpy, scr, depth, xclass );
+ if (vis) {
+ return vis;
+ }
+ }
+
+ _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
+ type, depth);
+
+ return NULL;
+}
+
+
+
+/*
+ * Select an X visual which satisfies the RGBA flag and minimum depth.
+ * Input: dpy,
+ * screen - X display and screen number
+ * min_depth - minimum visual depth
+ * preferred_class - preferred GLX visual class or DONT_CARE
+ * Return: pointer to an XVisualInfo or NULL.
+ */
+static XVisualInfo *
+choose_x_visual( Display *dpy, int screen, int min_depth,
+ int preferred_class )
+{
+ XVisualInfo *vis;
+ int xclass, visclass = 0;
+ int depth;
+
+ /* First see if the MESA_RGB_VISUAL env var is defined */
+ vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
+ if (vis) {
+ return vis;
+ }
+ /* Otherwise, search for a suitable visual */
+ if (preferred_class==DONT_CARE) {
+ for (xclass=0;xclass<6;xclass++) {
+ switch (xclass) {
+ case 0: visclass = TrueColor; break;
+ case 1: visclass = DirectColor; break;
+ case 2: visclass = PseudoColor; break;
+ case 3: visclass = StaticColor; break;
+ case 4: visclass = GrayScale; break;
+ case 5: visclass = StaticGray; break;
+ }
+ if (min_depth==0) {
+ /* start with shallowest */
+ for (depth=0;depth<=32;depth++) {
+ if (visclass==TrueColor && depth==8) {
+ /* Special case: try to get 8-bit PseudoColor before */
+ /* 8-bit TrueColor */
+ vis = get_visual( dpy, screen, 8, PseudoColor );
+ if (vis) {
+ return vis;
+ }
+ }
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ else {
+ /* start with deepest */
+ for (depth=32;depth>=min_depth;depth--) {
+ if (visclass==TrueColor && depth==8) {
+ /* Special case: try to get 8-bit PseudoColor before */
+ /* 8-bit TrueColor */
+ vis = get_visual( dpy, screen, 8, PseudoColor );
+ if (vis) {
+ return vis;
+ }
+ }
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ }
+ }
+ else {
+ /* search for a specific visual class */
+ switch (preferred_class) {
+ case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
+ case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
+ case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
+ case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
+ case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
+ case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
+ default: return NULL;
+ }
+ if (min_depth==0) {
+ /* start with shallowest */
+ for (depth=0;depth<=32;depth++) {
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ else {
+ /* start with deepest */
+ for (depth=32;depth>=min_depth;depth--) {
+ vis = get_visual( dpy, screen, depth, visclass );
+ if (vis) {
+ return vis;
+ }
+ }
+ }
+ }
+
+ /* didn't find a visual */
+ return NULL;
+}
+
+
+
+
+/**********************************************************************/
+/*** Display-related functions ***/
+/**********************************************************************/
+
+
+/**
+ * Free all XMesaVisuals which are associated with the given display.
+ */
+static void
+destroy_visuals_on_display(Display *dpy)
+{
+ int i;
+ for (i = 0; i < NumVisuals; i++) {
+ if (VisualTable[i]->display == dpy) {
+ /* remove this visual */
+ int j;
+ free(VisualTable[i]);
+ for (j = i; j < NumVisuals - 1; j++)
+ VisualTable[j] = VisualTable[j + 1];
+ NumVisuals--;
+ }
+ }
+}
+
+
+/**
+ * Called from XCloseDisplay() to let us free our display-related data.
+ */
+static int
+close_display_callback(Display *dpy, XExtCodes *codes)
+{
+ xmesa_destroy_buffers_on_display(dpy);
+ destroy_visuals_on_display(dpy);
+ xmesa_close_display(dpy);
+ return 0;
+}
+
+
+/**
+ * Look for the named extension on given display and return a pointer
+ * to the _XExtension data, or NULL if extension not found.
+ */
+static _XExtension *
+lookup_extension(Display *dpy, const char *extName)
+{
+ _XExtension *ext;
+ for (ext = dpy->ext_procs; ext; ext = ext->next) {
+ if (ext->name && strcmp(ext->name, extName) == 0) {
+ return ext;
+ }
+ }
+ return NULL;
+}
+
+
+/**
+ * Whenever we're given a new Display pointer, call this function to
+ * register our close_display_callback function.
+ */
+static void
+register_with_display(Display *dpy)
+{
+ const char *extName = "MesaGLX";
+ _XExtension *ext;
+
+ ext = lookup_extension(dpy, extName);
+ if (!ext) {
+ XExtCodes *c = XAddExtension(dpy);
+ ext = dpy->ext_procs; /* new extension is at head of list */
+ assert(c->extension == ext->codes.extension);
+ (void) c;
+ ext->name = strdup(extName);
+ ext->close_display = close_display_callback;
+ }
+}
+
+
+/**
+ * Fake an error.
+ */
+static int
+generate_error(Display *dpy,
+ unsigned char error_code,
+ XID resourceid,
+ unsigned char minor_code,
+ Bool core)
+{
+ XErrorHandler handler;
+ int major_opcode;
+ int first_event;
+ int first_error;
+ XEvent event;
+
+ handler = XSetErrorHandler(NULL);
+ XSetErrorHandler(handler);
+ if (!handler) {
+ return 0;
+ }
+
+ if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_opcode, &first_event, &first_error)) {
+ major_opcode = 0;
+ first_event = 0;
+ first_error = 0;
+ }
+
+ if (!core) {
+ error_code += first_error;
+ }
+
+ memset(&event, 0, sizeof event);
+
+ event.xerror.type = X_Error;
+ event.xerror.display = dpy;
+ event.xerror.resourceid = resourceid;
+ event.xerror.serial = NextRequest(dpy) - 1;
+ event.xerror.error_code = error_code;
+ event.xerror.request_code = major_opcode;
+ event.xerror.minor_code = minor_code;
+
+ return handler(dpy, &event.xerror);
+}
+
+
+/**********************************************************************/
+/*** Begin Fake GLX API Functions ***/
+/**********************************************************************/
+
+
+/**
+ * Helper used by glXChooseVisual and glXChooseFBConfig.
+ * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
+ * the later.
+ * In either case, the attribute list is terminated with the value 'None'.
+ */
+static XMesaVisual
+choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
+{
+ const GLboolean rgbModeDefault = fbConfig;
+ const int *parselist;
+ XVisualInfo *vis;
+ int min_red=0, min_green=0, min_blue=0;
+ GLboolean rgb_flag = rgbModeDefault;
+ GLboolean alpha_flag = GL_FALSE;
+ GLboolean double_flag = GL_FALSE;
+ GLboolean stereo_flag = GL_FALSE;
+ GLint depth_size = 0;
+ GLint stencil_size = 0;
+ GLint accumRedSize = 0;
+ GLint accumGreenSize = 0;
+ GLint accumBlueSize = 0;
+ GLint accumAlphaSize = 0;
+ int level = 0;
+ int visual_type = DONT_CARE;
+ GLint caveat = DONT_CARE;
+ XMesaVisual xmvis = NULL;
+ int desiredVisualID = -1;
+ int numAux = 0;
+ GLint num_samples = 0;
+
+ if (xmesa_init( dpy ) != 0) {
+ _mesa_warning(NULL, "Failed to initialize display");
+ return NULL;
+ }
+
+ parselist = list;
+
+ while (*parselist) {
+
+ if (fbConfig &&
+ parselist[1] == GLX_DONT_CARE &&
+ parselist[0] != GLX_LEVEL) {
+ /* For glXChooseFBConfig(), skip attributes whose value is
+ * GLX_DONT_CARE, unless it's GLX_LEVEL (which can legitimately be
+ * a negative value).
+ *
+ * From page 17 (23 of the pdf) of the GLX 1.4 spec:
+ * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
+ */
+ parselist += 2;
+ continue;
+ }
+
+ switch (*parselist) {
+ case GLX_USE_GL:
+ if (fbConfig) {
+ /* invalid token */
+ return NULL;
+ }
+ else {
+ /* skip */
+ parselist++;
+ }
+ break;
+ case GLX_BUFFER_SIZE:
+ parselist++;
+ parselist++;
+ break;
+ case GLX_LEVEL:
+ parselist++;
+ level = *parselist++;
+ break;
+ case GLX_RGBA:
+ if (fbConfig) {
+ /* invalid token */
+ return NULL;
+ }
+ else {
+ rgb_flag = GL_TRUE;
+ parselist++;
+ }
+ break;
+ case GLX_DOUBLEBUFFER:
+ parselist++;
+ if (fbConfig) {
+ double_flag = *parselist++;
+ }
+ else {
+ double_flag = GL_TRUE;
+ }
+ break;
+ case GLX_STEREO:
+ parselist++;
+ if (fbConfig) {
+ stereo_flag = *parselist++;
+ }
+ else {
+ stereo_flag = GL_TRUE;
+ }
+ break;
+ case GLX_AUX_BUFFERS:
+ parselist++;
+ numAux = *parselist++;
+ if (numAux > MAX_AUX_BUFFERS)
+ return NULL;
+ break;
+ case GLX_RED_SIZE:
+ parselist++;
+ min_red = *parselist++;
+ break;
+ case GLX_GREEN_SIZE:
+ parselist++;
+ min_green = *parselist++;
+ break;
+ case GLX_BLUE_SIZE:
+ parselist++;
+ min_blue = *parselist++;
+ break;
+ case GLX_ALPHA_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ alpha_flag = size ? GL_TRUE : GL_FALSE;
+ }
+ break;
+ case GLX_DEPTH_SIZE:
+ parselist++;
+ depth_size = *parselist++;
+ break;
+ case GLX_STENCIL_SIZE:
+ parselist++;
+ stencil_size = *parselist++;
+ break;
+ case GLX_ACCUM_RED_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumRedSize = MAX2( accumRedSize, size );
+ }
+ break;
+ case GLX_ACCUM_GREEN_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumGreenSize = MAX2( accumGreenSize, size );
+ }
+ break;
+ case GLX_ACCUM_BLUE_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumBlueSize = MAX2( accumBlueSize, size );
+ }
+ break;
+ case GLX_ACCUM_ALPHA_SIZE:
+ parselist++;
+ {
+ GLint size = *parselist++;
+ accumAlphaSize = MAX2( accumAlphaSize, size );
+ }
+ break;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_X_VISUAL_TYPE_EXT:
+ parselist++;
+ visual_type = *parselist++;
+ break;
+ case GLX_TRANSPARENT_TYPE_EXT:
+ parselist++;
+ parselist++;
+ break;
+ case GLX_TRANSPARENT_INDEX_VALUE_EXT:
+ parselist++;
+ parselist++;
+ break;
+ case GLX_TRANSPARENT_RED_VALUE_EXT:
+ case GLX_TRANSPARENT_GREEN_VALUE_EXT:
+ case GLX_TRANSPARENT_BLUE_VALUE_EXT:
+ case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
+ /* ignore */
+ parselist++;
+ parselist++;
+ break;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_VISUAL_CAVEAT_EXT:
+ parselist++;
+ caveat = *parselist++; /* ignored for now */
+ break;
+
+ /*
+ * GLX_ARB_multisample
+ */
+ case GLX_SAMPLE_BUFFERS_ARB:
+ /* ignore */
+ parselist++;
+ parselist++;
+ break;
+ case GLX_SAMPLES_ARB:
+ parselist++;
+ num_samples = *parselist++;
+ break;
+
+ /*
+ * FBConfig attribs.
+ */
+ case GLX_RENDER_TYPE:
+ if (!fbConfig)
+ return NULL;
+ parselist++;
+ if (*parselist & GLX_RGBA_BIT) {
+ rgb_flag = GL_TRUE;
+ }
+ else if (*parselist & GLX_COLOR_INDEX_BIT) {
+ rgb_flag = GL_FALSE;
+ }
+ else if (*parselist == 0) {
+ rgb_flag = GL_TRUE;
+ }
+ parselist++;
+ break;
+ case GLX_DRAWABLE_TYPE:
+ if (!fbConfig)
+ return NULL;
+ parselist++;
+ if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
+ return NULL; /* bad bit */
+ }
+ parselist++;
+ break;
+ case GLX_FBCONFIG_ID:
+ case GLX_VISUAL_ID:
+ if (!fbConfig)
+ return NULL;
+ parselist++;
+ desiredVisualID = *parselist++;
+ break;
+ case GLX_X_RENDERABLE:
+ case GLX_MAX_PBUFFER_WIDTH:
+ case GLX_MAX_PBUFFER_HEIGHT:
+ case GLX_MAX_PBUFFER_PIXELS:
+ if (!fbConfig)
+ return NULL; /* invalid config option */
+ parselist += 2; /* ignore the parameter */
+ break;
+
+ case GLX_BIND_TO_TEXTURE_RGB_EXT:
+ parselist++; /*skip*/
+ break;
+ case GLX_BIND_TO_TEXTURE_RGBA_EXT:
+ parselist++; /*skip*/
+ break;
+ case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
+ parselist++; /*skip*/
+ break;
+ case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
+ parselist++;
+ if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
+ GLX_TEXTURE_2D_BIT_EXT |
+ GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
+ /* invalid bit */
+ return NULL;
+ }
+ break;
+ case GLX_Y_INVERTED_EXT:
+ parselist++; /*skip*/
+ break;
+
+ case None:
+ /* end of list */
+ break;
+
+ default:
+ /* undefined attribute */
+ _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
+ *parselist);
+ return NULL;
+ }
+ }
+
+ (void) caveat;
+
+ if (num_samples < 0) {
+ _mesa_warning(NULL, "GLX_SAMPLES_ARB: number of samples must not be negative");
+ return NULL;
+ }
+
+ /*
+ * Since we're only simulating the GLX extension this function will never
+ * find any real GL visuals. Instead, all we can do is try to find an RGB
+ * or CI visual of appropriate depth. Other requested attributes such as
+ * double buffering, depth buffer, etc. will be associated with the X
+ * visual and stored in the VisualTable[].
+ */
+ if (desiredVisualID != -1) {
+ /* try to get a specific visual, by visualID */
+ XVisualInfo temp;
+ int n;
+ temp.visualid = desiredVisualID;
+ temp.screen = screen;
+ vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
+ if (vis) {
+ /* give the visual some useful GLX attributes */
+ double_flag = GL_TRUE;
+ rgb_flag = GL_TRUE;
+ }
+ }
+ else if (level==0) {
+ /* normal color planes */
+ /* Get an RGB visual */
+ int min_rgb = min_red + min_green + min_blue;
+ if (min_rgb>1 && min_rgb<8) {
+ /* a special case to be sure we can get a monochrome visual */
+ min_rgb = 1;
+ }
+ vis = choose_x_visual( dpy, screen, min_rgb, visual_type );
+ }
+ else {
+ _mesa_warning(NULL, "overlay not supported");
+ return NULL;
+ }
+
+ if (vis) {
+ /* Note: we're not exactly obeying the glXChooseVisual rules here.
+ * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
+ * largest depth buffer size, which is 32bits/value. Instead, we
+ * return 16 to maintain performance with earlier versions of Mesa.
+ */
+ if (stencil_size > 0)
+ depth_size = 24; /* if Z and stencil, always use 24+8 format */
+ else if (depth_size > 24)
+ depth_size = 32;
+ else if (depth_size > 16)
+ depth_size = 24;
+ else if (depth_size > 0) {
+ depth_size = default_depth_bits();
+ }
+
+ if (!alpha_flag) {
+ alpha_flag = default_alpha_bits() > 0;
+ }
+
+ /* we only support one size of stencil and accum buffers. */
+ if (stencil_size > 0)
+ stencil_size = 8;
+
+ if (accumRedSize > 0 ||
+ accumGreenSize > 0 ||
+ accumBlueSize > 0 ||
+ accumAlphaSize > 0) {
+
+ accumRedSize =
+ accumGreenSize =
+ accumBlueSize = default_accum_bits();
+
+ accumAlphaSize = alpha_flag ? accumRedSize : 0;
+ }
+
+ xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
+ stereo_flag, depth_size, stencil_size,
+ accumRedSize, accumGreenSize,
+ accumBlueSize, accumAlphaSize, level, numAux,
+ num_samples );
+ }
+
+ return xmvis;
+}
+
+
+PUBLIC XVisualInfo *
+glXChooseVisual( Display *dpy, int screen, int *list )
+{
+ XMesaVisual xmvis;
+
+ /* register ourselves as an extension on this display */
+ register_with_display(dpy);
+
+ xmvis = choose_visual(dpy, screen, list, GL_FALSE);
+ if (xmvis) {
+ /* create a new vishandle - the cached one may be stale */
+ xmvis->vishandle = malloc(sizeof(XVisualInfo));
+ if (xmvis->vishandle) {
+ memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
+ }
+ return xmvis->vishandle;
+ }
+ else
+ return NULL;
+}
+
+
+/**
+ * Helper function used by other glXCreateContext functions.
+ */
+static GLXContext
+create_context(Display *dpy, XMesaVisual xmvis,
+ XMesaContext shareCtx, Bool direct,
+ unsigned major, unsigned minor,
+ unsigned profileMask, unsigned contextFlags)
+{
+ GLXContext glxCtx;
+
+ if (!dpy || !xmvis)
+ return 0;
+
+ glxCtx = CALLOC_STRUCT(__GLXcontextRec);
+ if (!glxCtx)
+ return 0;
+
+ /* deallocate unused windows/buffers */
+#if 0
+ XMesaGarbageCollect();
+#endif
+
+ glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor,
+ profileMask, contextFlags);
+ if (!glxCtx->xmesaContext) {
+ free(glxCtx);
+ return NULL;
+ }
+
+ glxCtx->isDirect = DEFAULT_DIRECT;
+ glxCtx->currentDpy = dpy;
+ glxCtx->xid = (XID) glxCtx; /* self pointer */
+
+ return glxCtx;
+}
+
+
+PUBLIC GLXContext
+glXCreateContext( Display *dpy, XVisualInfo *visinfo,
+ GLXContext shareCtx, Bool direct )
+{
+ XMesaVisual xmvis;
+
+ xmvis = find_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* This visual wasn't found with glXChooseVisual() */
+ xmvis = create_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* unusable visual */
+ return NULL;
+ }
+ }
+
+ return create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
+}
+
+
+/* GLX 1.3 and later */
+PUBLIC Bool
+glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
+ GLXDrawable read, GLXContext ctx )
+{
+ GLXContext glxCtx = ctx;
+ GLXContext current = GetCurrentContext();
+ static boolean firsttime = 1, no_rast = 0;
+
+ if (firsttime) {
+ no_rast = getenv("SP_NO_RAST") != NULL;
+ firsttime = 0;
+ }
+
+ if (ctx) {
+ XMesaBuffer drawBuffer = NULL, readBuffer = NULL;
+ XMesaContext xmctx = glxCtx->xmesaContext;
+
+ /* either both must be null, or both must be non-null */
+ if (!draw != !read)
+ return False;
+
+ if (draw) {
+ /* Find the XMesaBuffer which corresponds to 'draw' */
+ drawBuffer = XMesaFindBuffer( dpy, draw );
+ if (!drawBuffer) {
+ /* drawable must be a new window! */
+ drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
+ if (!drawBuffer) {
+ /* Out of memory, or context/drawable depth mismatch */
+ return False;
+ }
+ }
+ }
+
+ if (read) {
+ /* Find the XMesaBuffer which corresponds to 'read' */
+ readBuffer = XMesaFindBuffer( dpy, read );
+ if (!readBuffer) {
+ /* drawable must be a new window! */
+ readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
+ if (!readBuffer) {
+ /* Out of memory, or context/drawable depth mismatch */
+ return False;
+ }
+ }
+ }
+
+ if (no_rast && current == ctx)
+ return True;
+
+ /* Now make current! */
+ if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
+ ctx->currentDpy = dpy;
+ ctx->currentDrawable = draw;
+ ctx->currentReadable = read;
+ SetCurrentContext(ctx);
+ return True;
+ }
+ else {
+ return False;
+ }
+ }
+ else if (!ctx && !draw && !read) {
+ /* release current context w/out assigning new one. */
+ XMesaMakeCurrent2( NULL, NULL, NULL );
+ SetCurrentContext(NULL);
+ return True;
+ }
+ else {
+ /* We were given an invalid set of arguments */
+ return False;
+ }
+}
+
+
+PUBLIC Bool
+glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
+{
+ return glXMakeContextCurrent( dpy, drawable, drawable, ctx );
+}
+
+
+PUBLIC GLXContext
+glXGetCurrentContext(void)
+{
+ return GetCurrentContext();
+}
+
+
+PUBLIC Display *
+glXGetCurrentDisplay(void)
+{
+ GLXContext glxCtx = glXGetCurrentContext();
+
+ return glxCtx ? glxCtx->currentDpy : NULL;
+}
+
+
+PUBLIC Display *
+glXGetCurrentDisplayEXT(void)
+{
+ return glXGetCurrentDisplay();
+}
+
+
+PUBLIC GLXDrawable
+glXGetCurrentDrawable(void)
+{
+ GLXContext gc = glXGetCurrentContext();
+ return gc ? gc->currentDrawable : 0;
+}
+
+
+PUBLIC GLXDrawable
+glXGetCurrentReadDrawable(void)
+{
+ GLXContext gc = glXGetCurrentContext();
+ return gc ? gc->currentReadable : 0;
+}
+
+
+PUBLIC GLXDrawable
+glXGetCurrentReadDrawableSGI(void)
+{
+ return glXGetCurrentReadDrawable();
+}
+
+
+PUBLIC GLXPixmap
+glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
+{
+ XMesaVisual v;
+ XMesaBuffer b;
+
+ v = find_glx_visual( dpy, visinfo );
+ if (!v) {
+ v = create_glx_visual( dpy, visinfo );
+ if (!v) {
+ /* unusable visual */
+ return 0;
+ }
+ }
+
+ b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
+ if (!b) {
+ return 0;
+ }
+ return b->ws.drawable;
+}
+
+
+/*** GLX_MESA_pixmap_colormap ***/
+
+PUBLIC GLXPixmap
+glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
+ Pixmap pixmap, Colormap cmap )
+{
+ XMesaVisual v;
+ XMesaBuffer b;
+
+ v = find_glx_visual( dpy, visinfo );
+ if (!v) {
+ v = create_glx_visual( dpy, visinfo );
+ if (!v) {
+ /* unusable visual */
+ return 0;
+ }
+ }
+
+ b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
+ if (!b) {
+ return 0;
+ }
+ return b->ws.drawable;
+}
+
+
+PUBLIC void
+glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
+ if (b) {
+ XMesaDestroyBuffer(b);
+ }
+ else if (getenv("MESA_DEBUG")) {
+ _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
+ }
+}
+
+
+PUBLIC void
+glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
+ unsigned long mask )
+{
+ XMesaContext xm_src = src->xmesaContext;
+ XMesaContext xm_dst = dst->xmesaContext;
+ (void) dpy;
+ if (GetCurrentContext() == src) {
+ glFlush();
+ }
+ XMesaCopyContext(xm_src, xm_dst, mask);
+}
+
+
+PUBLIC Bool
+glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
+{
+ int op, ev, err;
+ /* Mesa's GLX isn't really an X extension but we try to act like one. */
+ if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
+ ev = err = 0;
+ if (errorBase)
+ *errorBase = err;
+ if (eventBase)
+ *eventBase = ev;
+ return True; /* we're faking GLX so always return success */
+}
+
+
+PUBLIC void
+glXDestroyContext( Display *dpy, GLXContext ctx )
+{
+ if (ctx) {
+ GLXContext glxCtx = ctx;
+ (void) dpy;
+ XMesaDestroyContext( glxCtx->xmesaContext );
+ XMesaGarbageCollect();
+ free(glxCtx);
+ }
+}
+
+
+PUBLIC Bool
+glXIsDirect( Display *dpy, GLXContext ctx )
+{
+ return ctx ? ctx->isDirect : False;
+}
+
+
+
+PUBLIC void
+glXSwapBuffers( Display *dpy, GLXDrawable drawable )
+{
+ XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
+ static boolean firsttime = 1, no_rast = 0;
+
+ if (firsttime) {
+ no_rast = getenv("SP_NO_RAST") != NULL;
+ firsttime = 0;
+ }
+
+ if (no_rast)
+ return;
+
+ if (buffer) {
+ XMesaSwapBuffers(buffer);
+ }
+ else if (getenv("MESA_DEBUG")) {
+ _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
+ (int) drawable);
+ }
+}
+
+
+
+/*** GLX_MESA_copy_sub_buffer ***/
+
+PUBLIC void
+glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
+ int x, int y, int width, int height)
+{
+ XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
+ if (buffer) {
+ XMesaCopySubBuffer(buffer, x, y, width, height);
+ }
+ else if (getenv("MESA_DEBUG")) {
+ _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
+ }
+}
+
+
+PUBLIC Bool
+glXQueryVersion( Display *dpy, int *maj, int *min )
+{
+ (void) dpy;
+ /* Return GLX version, not Mesa version */
+ assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
+ *maj = CLIENT_MAJOR_VERSION;
+ *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
+ return True;
+}
+
+
+/*
+ * Query the GLX attributes of the given XVisualInfo.
+ */
+static int
+get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
+{
+ assert(xmvis);
+ switch(attrib) {
+ case GLX_USE_GL:
+ if (fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = (int) True;
+ return 0;
+ case GLX_BUFFER_SIZE:
+ *value = xmvis->visinfo->depth;
+ return 0;
+ case GLX_LEVEL:
+ *value = xmvis->mesa_visual.level;
+ return 0;
+ case GLX_RGBA:
+ if (fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = True;
+ return 0;
+ case GLX_DOUBLEBUFFER:
+ *value = (int) xmvis->mesa_visual.doubleBufferMode;
+ return 0;
+ case GLX_STEREO:
+ *value = (int) xmvis->mesa_visual.stereoMode;
+ return 0;
+ case GLX_AUX_BUFFERS:
+ *value = xmvis->mesa_visual.numAuxBuffers;
+ return 0;
+ case GLX_RED_SIZE:
+ *value = xmvis->mesa_visual.redBits;
+ return 0;
+ case GLX_GREEN_SIZE:
+ *value = xmvis->mesa_visual.greenBits;
+ return 0;
+ case GLX_BLUE_SIZE:
+ *value = xmvis->mesa_visual.blueBits;
+ return 0;
+ case GLX_ALPHA_SIZE:
+ *value = xmvis->mesa_visual.alphaBits;
+ return 0;
+ case GLX_DEPTH_SIZE:
+ *value = xmvis->mesa_visual.depthBits;
+ return 0;
+ case GLX_STENCIL_SIZE:
+ *value = xmvis->mesa_visual.stencilBits;
+ return 0;
+ case GLX_ACCUM_RED_SIZE:
+ *value = xmvis->mesa_visual.accumRedBits;
+ return 0;
+ case GLX_ACCUM_GREEN_SIZE:
+ *value = xmvis->mesa_visual.accumGreenBits;
+ return 0;
+ case GLX_ACCUM_BLUE_SIZE:
+ *value = xmvis->mesa_visual.accumBlueBits;
+ return 0;
+ case GLX_ACCUM_ALPHA_SIZE:
+ *value = xmvis->mesa_visual.accumAlphaBits;
+ return 0;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_X_VISUAL_TYPE_EXT:
+ switch (xmvis->visinfo->CLASS) {
+ case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
+ case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
+ case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
+ case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
+ case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
+ case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
+ }
+ return 0;
+ case GLX_TRANSPARENT_TYPE_EXT:
+ /* normal planes */
+ *value = GLX_NONE_EXT;
+ return 0;
+ case GLX_TRANSPARENT_INDEX_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_RED_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_GREEN_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_BLUE_VALUE_EXT:
+ /* undefined */
+ return 0;
+ case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
+ /* undefined */
+ return 0;
+
+ /*
+ * GLX_EXT_visual_info extension
+ */
+ case GLX_VISUAL_CAVEAT_EXT:
+ /* test for zero, just in case */
+ if (xmvis->mesa_visual.visualRating > 0)
+ *value = xmvis->mesa_visual.visualRating;
+ else
+ *value = GLX_NONE_EXT;
+ return 0;
+
+ /*
+ * GLX_ARB_multisample
+ */
+ case GLX_SAMPLE_BUFFERS_ARB:
+ *value = xmvis->mesa_visual.sampleBuffers;
+ return 0;
+ case GLX_SAMPLES_ARB:
+ *value = xmvis->mesa_visual.samples;
+ return 0;
+
+ /*
+ * For FBConfigs:
+ */
+ case GLX_SCREEN_EXT:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = xmvis->visinfo->screen;
+ break;
+ case GLX_DRAWABLE_TYPE: /*SGIX too */
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
+ break;
+ case GLX_RENDER_TYPE_SGIX:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = GLX_RGBA_BIT;
+ break;
+ case GLX_X_RENDERABLE_SGIX:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = True; /* XXX really? */
+ break;
+ case GLX_FBCONFIG_ID_SGIX:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = xmvis->visinfo->visualid;
+ break;
+ case GLX_MAX_PBUFFER_WIDTH:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ /* XXX should be same as ctx->Const.MaxRenderbufferSize */
+ *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
+ break;
+ case GLX_MAX_PBUFFER_HEIGHT:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
+ break;
+ case GLX_MAX_PBUFFER_PIXELS:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
+ DisplayHeight(xmvis->display, xmvis->visinfo->screen);
+ break;
+ case GLX_VISUAL_ID:
+ if (!fbconfig)
+ return GLX_BAD_ATTRIBUTE;
+ *value = xmvis->visinfo->visualid;
+ break;
+
+ case GLX_BIND_TO_TEXTURE_RGB_EXT:
+ *value = True; /*XXX*/
+ break;
+ case GLX_BIND_TO_TEXTURE_RGBA_EXT:
+ /* XXX review */
+ *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
+ break;
+ case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
+ *value = True; /*XXX*/
+ break;
+ case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
+ *value = (GLX_TEXTURE_1D_BIT_EXT |
+ GLX_TEXTURE_2D_BIT_EXT |
+ GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
+ break;
+ case GLX_Y_INVERTED_EXT:
+ *value = True; /*XXX*/
+ break;
+
+ default:
+ return GLX_BAD_ATTRIBUTE;
+ }
+ return Success;
+}
+
+
+PUBLIC int
+glXGetConfig( Display *dpy, XVisualInfo *visinfo,
+ int attrib, int *value )
+{
+ XMesaVisual xmvis;
+ int k;
+ if (!dpy || !visinfo)
+ return GLX_BAD_ATTRIBUTE;
+
+ xmvis = find_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* this visual wasn't obtained with glXChooseVisual */
+ xmvis = create_glx_visual( dpy, visinfo );
+ if (!xmvis) {
+ /* this visual can't be used for GL rendering */
+ if (attrib==GLX_USE_GL) {
+ *value = (int) False;
+ return 0;
+ }
+ else {
+ return GLX_BAD_VISUAL;
+ }
+ }
+ }
+
+ k = get_config(xmvis, attrib, value, GL_FALSE);
+ return k;
+}
+
+
+PUBLIC void
+glXWaitGL( void )
+{
+ XMesaContext xmesa = XMesaGetCurrentContext();
+ XMesaFlush( xmesa );
+}
+
+
+
+PUBLIC void
+glXWaitX( void )
+{
+ XMesaContext xmesa = XMesaGetCurrentContext();
+ XMesaFlush( xmesa );
+}
+
+
+static const char *
+get_extensions( void )
+{
+ return EXTENSIONS;
+}
+
+
+
+/* GLX 1.1 and later */
+PUBLIC const char *
+glXQueryExtensionsString( Display *dpy, int screen )
+{
+ (void) dpy;
+ (void) screen;
+ return get_extensions();
+}
+
+
+
+/* GLX 1.1 and later */
+PUBLIC const char *
+glXQueryServerString( Display *dpy, int screen, int name )
+{
+ static char version[1000];
+ sprintf(version, "%d.%d %s",
+ SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name());
+
+ (void) dpy;
+ (void) screen;
+
+ switch (name) {
+ case GLX_EXTENSIONS:
+ return get_extensions();
+ case GLX_VENDOR:
+ return VENDOR;
+ case GLX_VERSION:
+ return version;
+ default:
+ return NULL;
+ }
+}
+
+
+
+/* GLX 1.1 and later */
+PUBLIC const char *
+glXGetClientString( Display *dpy, int name )
+{
+ static char version[1000];
+ sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
+ CLIENT_MINOR_VERSION, xmesa_get_name());
+
+ (void) dpy;
+
+ switch (name) {
+ case GLX_EXTENSIONS:
+ return get_extensions();
+ case GLX_VENDOR:
+ return VENDOR;
+ case GLX_VERSION:
+ return version;
+ default:
+ return NULL;
+ }
+}
+
+
+
+/*
+ * GLX 1.3 and later
+ */
+
+
+PUBLIC int
+glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
+ int attribute, int *value)
+{
+ XMesaVisual v = (XMesaVisual) config;
+ (void) dpy;
+ (void) config;
+
+ if (!dpy || !config || !value)
+ return -1;
+
+ return get_config(v, attribute, value, GL_TRUE);
+}
+
+
+PUBLIC GLXFBConfig *
+glXGetFBConfigs( Display *dpy, int screen, int *nelements )
+{
+ XVisualInfo *visuals, visTemplate;
+ const long visMask = VisualScreenMask;
+ int i;
+
+ /* Get list of all X visuals */
+ visTemplate.screen = screen;
+ visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
+ if (*nelements > 0) {
+ XMesaVisual *results = malloc(*nelements * sizeof(XMesaVisual));
+ if (!results) {
+ *nelements = 0;
+ return NULL;
+ }
+ for (i = 0; i < *nelements; i++) {
+ results[i] = create_glx_visual(dpy, visuals + i);
+ if (!results[i]) {
+ *nelements = i;
+ break;
+ }
+ }
+ return (GLXFBConfig *) results;
+ }
+ return NULL;
+}
+
+
+PUBLIC GLXFBConfig *
+glXChooseFBConfig(Display *dpy, int screen,
+ const int *attribList, int *nitems)
+{
+ XMesaVisual xmvis;
+
+ /* register ourselves as an extension on this display */
+ register_with_display(dpy);
+
+ if (!attribList || !attribList[0]) {
+ /* return list of all configs (per GLX_SGIX_fbconfig spec) */
+ return glXGetFBConfigs(dpy, screen, nitems);
+ }
+
+ xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
+ if (xmvis) {
+ GLXFBConfig *config = malloc(sizeof(XMesaVisual));
+ if (!config) {
+ *nitems = 0;
+ return NULL;
+ }
+ *nitems = 1;
+ config[0] = (GLXFBConfig) xmvis;
+ return (GLXFBConfig *) config;
+ }
+ else {
+ *nitems = 0;
+ return NULL;
+ }
+}
+
+
+PUBLIC XVisualInfo *
+glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
+{
+ if (dpy && config) {
+ XMesaVisual xmvis = (XMesaVisual) config;
+#if 0
+ return xmvis->vishandle;
+#else
+ /* create a new vishandle - the cached one may be stale */
+ xmvis->vishandle = malloc(sizeof(XVisualInfo));
+ if (xmvis->vishandle) {
+ memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
+ }
+ return xmvis->vishandle;
+#endif
+ }
+ else {
+ return NULL;
+ }
+}
+
+
+PUBLIC GLXWindow
+glXCreateWindow(Display *dpy, GLXFBConfig config, Window win,
+ const int *attribList)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf;
+ if (!xmvis)
+ return 0;
+
+ xmbuf = XMesaCreateWindowBuffer(xmvis, win);
+ if (!xmbuf)
+ return 0;
+
+ (void) dpy;
+ (void) attribList; /* Ignored in GLX 1.3 */
+
+ return win; /* A hack for now */
+}
+
+
+PUBLIC void
+glXDestroyWindow( Display *dpy, GLXWindow window )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window);
+ if (b)
+ XMesaDestroyBuffer(b);
+ /* don't destroy X window */
+}
+
+
+/* XXX untested */
+PUBLIC GLXPixmap
+glXCreatePixmap(Display *dpy, GLXFBConfig config, Pixmap pixmap,
+ const int *attribList)
+{
+ XMesaVisual v = (XMesaVisual) config;
+ XMesaBuffer b;
+ const int *attr;
+ int target = 0, format = 0, mipmap = 0;
+ int value;
+
+ if (!dpy || !config || !pixmap)
+ return 0;
+
+ for (attr = attribList; attr && *attr; attr++) {
+ switch (*attr) {
+ case GLX_TEXTURE_FORMAT_EXT:
+ attr++;
+ switch (*attr) {
+ case GLX_TEXTURE_FORMAT_NONE_EXT:
+ case GLX_TEXTURE_FORMAT_RGB_EXT:
+ case GLX_TEXTURE_FORMAT_RGBA_EXT:
+ format = *attr;
+ break;
+ default:
+ /* error */
+ return 0;
+ }
+ break;
+ case GLX_TEXTURE_TARGET_EXT:
+ attr++;
+ switch (*attr) {
+ case GLX_TEXTURE_1D_EXT:
+ case GLX_TEXTURE_2D_EXT:
+ case GLX_TEXTURE_RECTANGLE_EXT:
+ target = *attr;
+ break;
+ default:
+ /* error */
+ return 0;
+ }
+ break;
+ case GLX_MIPMAP_TEXTURE_EXT:
+ attr++;
+ if (*attr)
+ mipmap = 1;
+ break;
+ default:
+ /* error */
+ return 0;
+ }
+ }
+
+ if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
+ &value, GL_TRUE) != Success
+ || !value) {
+ return 0; /* error! */
+ }
+ }
+ else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
+ &value, GL_TRUE) != Success
+ || !value) {
+ return 0; /* error! */
+ }
+ }
+ if (mipmap) {
+ if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
+ &value, GL_TRUE) != Success
+ || !value) {
+ return 0; /* error! */
+ }
+ }
+ if (target == GLX_TEXTURE_1D_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+ &value, GL_TRUE) != Success
+ || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
+ return 0; /* error! */
+ }
+ }
+ else if (target == GLX_TEXTURE_2D_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+ &value, GL_TRUE) != Success
+ || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
+ return 0; /* error! */
+ }
+ }
+ if (target == GLX_TEXTURE_RECTANGLE_EXT) {
+ if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
+ &value, GL_TRUE) != Success
+ || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
+ return 0; /* error! */
+ }
+ }
+
+ if (format || target || mipmap) {
+ /* texture from pixmap */
+ b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
+ }
+ else {
+ b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
+ }
+ if (!b) {
+ return 0;
+ }
+
+ return pixmap;
+}
+
+
+PUBLIC void
+glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap);
+ if (b)
+ XMesaDestroyBuffer(b);
+ /* don't destroy X pixmap */
+}
+
+
+PUBLIC GLXPbuffer
+glXCreatePbuffer(Display *dpy, GLXFBConfig config, const int *attribList)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf;
+ const int *attrib;
+ int width = 0, height = 0;
+ GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
+
+ (void) dpy;
+
+ for (attrib = attribList; *attrib; attrib++) {
+ switch (*attrib) {
+ case GLX_PBUFFER_WIDTH:
+ attrib++;
+ width = *attrib;
+ break;
+ case GLX_PBUFFER_HEIGHT:
+ attrib++;
+ height = *attrib;
+ break;
+ case GLX_PRESERVED_CONTENTS:
+ attrib++;
+ preserveContents = *attrib;
+ break;
+ case GLX_LARGEST_PBUFFER:
+ attrib++;
+ useLargest = *attrib;
+ break;
+ default:
+ return 0;
+ }
+ }
+
+ if (width == 0 || height == 0)
+ return 0;
+
+ if (width > PBUFFER_MAX_SIZE || height > PBUFFER_MAX_SIZE) {
+ /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
+ * allocate the largest possible buffer.
+ */
+ if (useLargest) {
+ width = PBUFFER_MAX_SIZE;
+ height = PBUFFER_MAX_SIZE;
+ }
+ }
+
+ xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
+ /* A GLXPbuffer handle must be an X Drawable because that's what
+ * glXMakeCurrent takes.
+ */
+ if (xmbuf) {
+ xmbuf->largestPbuffer = useLargest;
+ xmbuf->preservedContents = preserveContents;
+ return (GLXPbuffer) xmbuf->ws.drawable;
+ }
+ else {
+ return 0;
+ }
+}
+
+
+PUBLIC void
+glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
+ if (b) {
+ XMesaDestroyBuffer(b);
+ }
+}
+
+
+PUBLIC void
+glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute,
+ unsigned int *value)
+{
+ GLuint width, height;
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
+ if (!xmbuf) {
+ generate_error(dpy, GLXBadDrawable, draw, X_GLXGetDrawableAttributes, False);
+ return;
+ }
+
+ /* make sure buffer's dimensions are up to date */
+ xmesa_get_window_size(dpy, xmbuf, &width, &height);
+
+ switch (attribute) {
+ case GLX_WIDTH:
+ *value = width;
+ break;
+ case GLX_HEIGHT:
+ *value = height;
+ break;
+ case GLX_PRESERVED_CONTENTS:
+ *value = xmbuf->preservedContents;
+ break;
+ case GLX_LARGEST_PBUFFER:
+ *value = xmbuf->largestPbuffer;
+ break;
+ case GLX_FBCONFIG_ID:
+ *value = xmbuf->xm_visual->visinfo->visualid;
+ return;
+ case GLX_TEXTURE_FORMAT_EXT:
+ *value = xmbuf->TextureFormat;
+ break;
+ case GLX_TEXTURE_TARGET_EXT:
+ *value = xmbuf->TextureTarget;
+ break;
+ case GLX_MIPMAP_TEXTURE_EXT:
+ *value = xmbuf->TextureMipmap;
+ break;
+
+ default:
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, true);
+ return;
+ }
+}
+
+
+PUBLIC GLXContext
+glXCreateNewContext( Display *dpy, GLXFBConfig config,
+ int renderType, GLXContext shareCtx, Bool direct )
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+
+ if (!dpy || !config ||
+ (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
+ return 0;
+
+ return create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
+}
+
+
+PUBLIC int
+glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
+{
+ GLXContext glxCtx = ctx;
+ XMesaContext xmctx = glxCtx->xmesaContext;
+
+ (void) dpy;
+ (void) ctx;
+
+ switch (attribute) {
+ case GLX_FBCONFIG_ID:
+ *value = xmctx->xm_visual->visinfo->visualid;
+ break;
+ case GLX_RENDER_TYPE:
+ *value = GLX_RGBA_TYPE;
+ break;
+ case GLX_SCREEN:
+ *value = 0;
+ return Success;
+ default:
+ return GLX_BAD_ATTRIBUTE;
+ }
+ return 0;
+}
+
+
+PUBLIC void
+glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf)
+ xmbuf->selectedEvents = mask;
+}
+
+
+PUBLIC void
+glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf)
+ *mask = xmbuf->selectedEvents;
+ else
+ *mask = 0;
+}
+
+
+
+/*** GLX_SGI_swap_control ***/
+
+PUBLIC int
+glXSwapIntervalSGI(int interval)
+{
+ (void) interval;
+ return 0;
+}
+
+
+
+/*** GLX_SGI_video_sync ***/
+
+static unsigned int FrameCounter = 0;
+
+PUBLIC int
+glXGetVideoSyncSGI(unsigned int *count)
+{
+ /* this is a bogus implementation */
+ *count = FrameCounter++;
+ return 0;
+}
+
+PUBLIC int
+glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
+{
+ if (divisor <= 0 || remainder < 0)
+ return GLX_BAD_VALUE;
+ /* this is a bogus implementation */
+ FrameCounter++;
+ while (FrameCounter % divisor != remainder)
+ FrameCounter++;
+ *count = FrameCounter;
+ return 0;
+}
+
+
+
+/*** GLX_SGI_make_current_read ***/
+
+PUBLIC Bool
+glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read,
+ GLXContext ctx)
+{
+ return glXMakeContextCurrent( dpy, draw, read, ctx );
+}
+
+/* not used
+static GLXDrawable
+glXGetCurrentReadDrawableSGI(void)
+{
+ return 0;
+}
+*/
+
+
+/*** GLX_SGIX_video_source ***/
+#if defined(_VL_H)
+
+PUBLIC GLXVideoSourceSGIX
+glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server,
+ VLPath path, int nodeClass, VLNode drainNode)
+{
+ (void) dpy;
+ (void) screen;
+ (void) server;
+ (void) path;
+ (void) nodeClass;
+ (void) drainNode;
+ return 0;
+}
+
+PUBLIC void
+glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
+{
+ (void) dpy;
+ (void) src;
+}
+
+#endif
+
+
+/*** GLX_EXT_import_context ***/
+
+PUBLIC void
+glXFreeContextEXT(Display *dpy, GLXContext context)
+{
+ (void) dpy;
+ (void) context;
+}
+
+PUBLIC GLXContextID
+glXGetContextIDEXT(const GLXContext context)
+{
+ (void) context;
+ return 0;
+}
+
+PUBLIC GLXContext
+glXImportContextEXT(Display *dpy, GLXContextID contextID)
+{
+ (void) dpy;
+ (void) contextID;
+ return 0;
+}
+
+PUBLIC int
+glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute,
+ int *value)
+{
+ (void) dpy;
+ (void) context;
+ (void) attribute;
+ (void) value;
+ return 0;
+}
+
+
+
+/*** GLX_SGIX_fbconfig ***/
+
+PUBLIC int
+glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config,
+ int attribute, int *value)
+{
+ return glXGetFBConfigAttrib(dpy, config, attribute, value);
+}
+
+PUBLIC GLXFBConfigSGIX *
+glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list,
+ int *nelements)
+{
+ return (GLXFBConfig *) glXChooseFBConfig(dpy, screen,
+ attrib_list, nelements);
+}
+
+
+PUBLIC GLXPixmap
+glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
+ Pixmap pixmap)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
+ return xmbuf->ws.drawable; /* need to return an X ID */
+}
+
+
+PUBLIC GLXContext
+glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
+ int renderType, GLXContext shareCtx,
+ Bool direct)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+
+ if (!dpy || !config ||
+ (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
+ return 0;
+
+ return create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
+}
+
+
+PUBLIC XVisualInfo *
+glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
+{
+ return glXGetVisualFromFBConfig(dpy, config);
+}
+
+
+PUBLIC GLXFBConfigSGIX
+glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
+{
+ XMesaVisual xmvis = find_glx_visual(dpy, vis);
+ if (!xmvis) {
+ /* This visual wasn't found with glXChooseVisual() */
+ xmvis = create_glx_visual(dpy, vis);
+ }
+
+ return (GLXFBConfigSGIX) xmvis;
+}
+
+
+
+/*** GLX_SGIX_pbuffer ***/
+
+PUBLIC GLXPbufferSGIX
+glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
+ unsigned int width, unsigned int height,
+ int *attribList)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ XMesaBuffer xmbuf;
+ const int *attrib;
+ GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
+
+ (void) dpy;
+
+ for (attrib = attribList; attrib && *attrib; attrib++) {
+ switch (*attrib) {
+ case GLX_PRESERVED_CONTENTS_SGIX:
+ attrib++;
+ preserveContents = *attrib; /* ignored */
+ break;
+ case GLX_LARGEST_PBUFFER_SGIX:
+ attrib++;
+ useLargest = *attrib; /* ignored */
+ break;
+ default:
+ return 0;
+ }
+ }
+
+ /* not used at this time */
+ (void) useLargest;
+ (void) preserveContents;
+
+ xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
+ /* A GLXPbuffer handle must be an X Drawable because that's what
+ * glXMakeCurrent takes.
+ */
+ return (GLXPbuffer) xmbuf->ws.drawable;
+}
+
+
+PUBLIC void
+glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
+ if (xmbuf) {
+ XMesaDestroyBuffer(xmbuf);
+ }
+}
+
+
+PUBLIC void
+glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute,
+ unsigned int *value)
+{
+ const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
+
+ if (!xmbuf) {
+ /* Generate GLXBadPbufferSGIX for bad pbuffer */
+ return;
+ }
+
+ switch (attribute) {
+ case GLX_PRESERVED_CONTENTS_SGIX:
+ *value = True;
+ break;
+ case GLX_LARGEST_PBUFFER_SGIX:
+ *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
+ break;
+ case GLX_WIDTH_SGIX:
+ *value = xmesa_buffer_width(xmbuf);
+ break;
+ case GLX_HEIGHT_SGIX:
+ *value = xmesa_buffer_height(xmbuf);
+ break;
+ case GLX_EVENT_MASK_SGIX:
+ *value = 0; /* XXX might be wrong */
+ break;
+ default:
+ *value = 0;
+ }
+}
+
+
+PUBLIC void
+glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf) {
+ /* Note: we'll never generate clobber events */
+ xmbuf->selectedEvents = mask;
+ }
+}
+
+
+PUBLIC void
+glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable,
+ unsigned long *mask)
+{
+ XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
+ if (xmbuf) {
+ *mask = xmbuf->selectedEvents;
+ }
+ else {
+ *mask = 0;
+ }
+}
+
+
+
+/*** GLX_SGI_cushion ***/
+
+PUBLIC void
+glXCushionSGI(Display *dpy, Window win, float cushion)
+{
+ (void) dpy;
+ (void) win;
+ (void) cushion;
+}
+
+
+
+/*** GLX_SGIX_video_resize ***/
+
+PUBLIC int
+glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel,
+ Window window)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) window;
+ return 0;
+}
+
+PUBLIC int
+glXChannelRectSGIX(Display *dpy, int screen, int channel,
+ int x, int y, int w, int h)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) x;
+ (void) y;
+ (void) w;
+ (void) h;
+ return 0;
+}
+
+PUBLIC int
+glXQueryChannelRectSGIX(Display *dpy, int screen, int channel,
+ int *x, int *y, int *w, int *h)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) x;
+ (void) y;
+ (void) w;
+ (void) h;
+ return 0;
+}
+
+PUBLIC int
+glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel,
+ int *dx, int *dy, int *dw, int *dh)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) dx;
+ (void) dy;
+ (void) dw;
+ (void) dh;
+ return 0;
+}
+
+PUBLIC int
+glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
+{
+ (void) dpy;
+ (void) screen;
+ (void) channel;
+ (void) synctype;
+ return 0;
+}
+
+
+
+/*** GLX_SGIX_dmbuffer **/
+
+#if defined(_DM_BUFFER_H_)
+PUBLIC Bool
+glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer,
+ DMparams *params, DMbuffer dmbuffer)
+{
+ (void) dpy;
+ (void) pbuffer;
+ (void) params;
+ (void) dmbuffer;
+ return False;
+}
+#endif
+
+
+/*** GLX_SUN_get_transparent_index ***/
+
+PUBLIC Status
+glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay,
+ unsigned long *pTransparent)
+{
+ (void) dpy;
+ (void) overlay;
+ (void) underlay;
+ (void) pTransparent;
+ return 0;
+}
+
+
+
+/*** GLX_MESA_release_buffers ***/
+
+/*
+ * Release the depth, stencil, accum buffers attached to a GLXDrawable
+ * (a window or pixmap) prior to destroying the GLXDrawable.
+ */
+PUBLIC Bool
+glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, d);
+ if (b) {
+ XMesaDestroyBuffer(b);
+ return True;
+ }
+ return False;
+}
+
+/*** GLX_EXT_texture_from_pixmap ***/
+
+PUBLIC void
+glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
+ const int *attrib_list)
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
+ if (b)
+ XMesaBindTexImage(dpy, b, buffer, attrib_list);
+}
+
+PUBLIC void
+glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
+{
+ XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
+ if (b)
+ XMesaReleaseTexImage(dpy, b, buffer);
+}
+
+
+
+/*** GLX_ARB_create_context ***/
+
+
+GLXContext
+glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config,
+ GLXContext shareCtx, Bool direct,
+ const int *attrib_list)
+{
+ XMesaVisual xmvis = (XMesaVisual) config;
+ int majorVersion = 1, minorVersion = 0;
+ int contextFlags = 0x0;
+ int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
+ int renderType = GLX_RGBA_TYPE;
+ unsigned i;
+ Bool done = False;
+ const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB |
+ GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
+ GLXContext ctx;
+
+ /* parse attrib_list */
+ for (i = 0; !done && attrib_list && attrib_list[i]; i++) {
+ switch (attrib_list[i]) {
+ case GLX_CONTEXT_MAJOR_VERSION_ARB:
+ majorVersion = attrib_list[++i];
+ break;
+ case GLX_CONTEXT_MINOR_VERSION_ARB:
+ minorVersion = attrib_list[++i];
+ break;
+ case GLX_CONTEXT_FLAGS_ARB:
+ contextFlags = attrib_list[++i];
+ break;
+ case GLX_CONTEXT_PROFILE_MASK_ARB:
+ profileMask = attrib_list[++i];
+ break;
+ case GLX_RENDER_TYPE:
+ renderType = attrib_list[++i];
+ break;
+ case 0:
+ /* end of list */
+ done = True;
+ break;
+ default:
+ /* bad attribute */
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+ }
+
+ /* check contextFlags */
+ if (contextFlags & ~contextFlagsAll) {
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ /* check profileMask */
+ if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB &&
+ profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB &&
+ profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT) {
+ generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False);
+ return NULL;
+ }
+
+ /* check renderType */
+ if (renderType != GLX_RGBA_TYPE &&
+ renderType != GLX_COLOR_INDEX_TYPE) {
+ generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ /* check version */
+ if (majorVersion <= 0 ||
+ minorVersion < 0 ||
+ (profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT &&
+ ((majorVersion == 1 && minorVersion > 5) ||
+ (majorVersion == 2 && minorVersion > 1) ||
+ (majorVersion == 3 && minorVersion > 3) ||
+ (majorVersion == 4 && minorVersion > 5) ||
+ majorVersion > 4))) {
+ generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+ if (profileMask == GLX_CONTEXT_ES_PROFILE_BIT_EXT &&
+ ((majorVersion == 1 && minorVersion > 1) ||
+ (majorVersion == 2 && minorVersion > 0) ||
+ (majorVersion == 3 && minorVersion > 1) ||
+ majorVersion > 3)) {
+ /* GLX_EXT_create_context_es2_profile says nothing to justifying a
+ * different error code for invalid ES versions, but this is what NVIDIA
+ * does and piglit expects.
+ */
+ generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False);
+ return NULL;
+ }
+
+ if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
+ majorVersion < 3) {
+ generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3) {
+ generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
+ return NULL;
+ }
+
+ ctx = create_context(dpy, xmvis,
+ shareCtx ? shareCtx->xmesaContext : NULL,
+ direct,
+ majorVersion, minorVersion,
+ profileMask, contextFlags);
+ if (!ctx) {
+ generate_error(dpy, GLXBadFBConfig, 0, X_GLXCreateContextAttribsARB, False);
+ }
+
+ return ctx;
+}
diff --git a/src/gallium/frontends/glx/xlib/glx_getproc.c b/src/gallium/frontends/glx/xlib/glx_getproc.c
new file mode 100644
index 00000000000..6b94f2c1960
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/glx_getproc.c
@@ -0,0 +1,212 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * glXGetProcAddress()
+ */
+
+
+#define GLX_GLXEXT_PROTOTYPES
+
+#include <string.h>
+#include "pipe/p_compiler.h"
+#include "GL/glx.h"
+#include "glapi/glapi.h"
+
+
+struct name_address_pair {
+ const char *Name;
+ __GLXextFuncPtr Address;
+};
+
+
+static const struct name_address_pair GLX_functions[] = {
+ /*** GLX_VERSION_1_0 ***/
+ { "glXChooseVisual", (__GLXextFuncPtr) glXChooseVisual },
+ { "glXCopyContext", (__GLXextFuncPtr) glXCopyContext },
+ { "glXCreateContext", (__GLXextFuncPtr) glXCreateContext },
+ { "glXCreateGLXPixmap", (__GLXextFuncPtr) glXCreateGLXPixmap },
+ { "glXDestroyContext", (__GLXextFuncPtr) glXDestroyContext },
+ { "glXDestroyGLXPixmap", (__GLXextFuncPtr) glXDestroyGLXPixmap },
+ { "glXGetConfig", (__GLXextFuncPtr) glXGetConfig },
+ { "glXGetCurrentContext", (__GLXextFuncPtr) glXGetCurrentContext },
+ { "glXGetCurrentDrawable", (__GLXextFuncPtr) glXGetCurrentDrawable },
+ { "glXIsDirect", (__GLXextFuncPtr) glXIsDirect },
+ { "glXMakeCurrent", (__GLXextFuncPtr) glXMakeCurrent },
+ { "glXQueryExtension", (__GLXextFuncPtr) glXQueryExtension },
+ { "glXQueryVersion", (__GLXextFuncPtr) glXQueryVersion },
+ { "glXSwapBuffers", (__GLXextFuncPtr) glXSwapBuffers },
+ { "glXUseXFont", (__GLXextFuncPtr) glXUseXFont },
+ { "glXWaitGL", (__GLXextFuncPtr) glXWaitGL },
+ { "glXWaitX", (__GLXextFuncPtr) glXWaitX },
+
+ /*** GLX_VERSION_1_1 ***/
+ { "glXGetClientString", (__GLXextFuncPtr) glXGetClientString },
+ { "glXQueryExtensionsString", (__GLXextFuncPtr) glXQueryExtensionsString },
+ { "glXQueryServerString", (__GLXextFuncPtr) glXQueryServerString },
+
+ /*** GLX_VERSION_1_2 ***/
+ { "glXGetCurrentDisplay", (__GLXextFuncPtr) glXGetCurrentDisplay },
+
+ /*** GLX_VERSION_1_3 ***/
+ { "glXChooseFBConfig", (__GLXextFuncPtr) glXChooseFBConfig },
+ { "glXCreateNewContext", (__GLXextFuncPtr) glXCreateNewContext },
+ { "glXCreatePbuffer", (__GLXextFuncPtr) glXCreatePbuffer },
+ { "glXCreatePixmap", (__GLXextFuncPtr) glXCreatePixmap },
+ { "glXCreateWindow", (__GLXextFuncPtr) glXCreateWindow },
+ { "glXDestroyPbuffer", (__GLXextFuncPtr) glXDestroyPbuffer },
+ { "glXDestroyPixmap", (__GLXextFuncPtr) glXDestroyPixmap },
+ { "glXDestroyWindow", (__GLXextFuncPtr) glXDestroyWindow },
+ { "glXGetCurrentReadDrawable", (__GLXextFuncPtr) glXGetCurrentReadDrawable },
+ { "glXGetFBConfigAttrib", (__GLXextFuncPtr) glXGetFBConfigAttrib },
+ { "glXGetFBConfigs", (__GLXextFuncPtr) glXGetFBConfigs },
+ { "glXGetSelectedEvent", (__GLXextFuncPtr) glXGetSelectedEvent },
+ { "glXGetVisualFromFBConfig", (__GLXextFuncPtr) glXGetVisualFromFBConfig },
+ { "glXMakeContextCurrent", (__GLXextFuncPtr) glXMakeContextCurrent },
+ { "glXQueryContext", (__GLXextFuncPtr) glXQueryContext },
+ { "glXQueryDrawable", (__GLXextFuncPtr) glXQueryDrawable },
+ { "glXSelectEvent", (__GLXextFuncPtr) glXSelectEvent },
+
+ /*** GLX_VERSION_1_4 ***/
+ { "glXGetProcAddress", (__GLXextFuncPtr) glXGetProcAddress },
+
+ /*** GLX_SGI_swap_control ***/
+ { "glXSwapIntervalSGI", (__GLXextFuncPtr) glXSwapIntervalSGI },
+
+ /*** GLX_SGI_video_sync ***/
+ { "glXGetVideoSyncSGI", (__GLXextFuncPtr) glXGetVideoSyncSGI },
+ { "glXWaitVideoSyncSGI", (__GLXextFuncPtr) glXWaitVideoSyncSGI },
+
+ /*** GLX_SGI_make_current_read ***/
+ { "glXMakeCurrentReadSGI", (__GLXextFuncPtr) glXMakeCurrentReadSGI },
+ { "glXGetCurrentReadDrawableSGI", (__GLXextFuncPtr) glXGetCurrentReadDrawableSGI },
+
+ /*** GLX_SGIX_video_source ***/
+#if defined(_VL_H)
+ { "glXCreateGLXVideoSourceSGIX", (__GLXextFuncPtr) glXCreateGLXVideoSourceSGIX },
+ { "glXDestroyGLXVideoSourceSGIX", (__GLXextFuncPtr) glXDestroyGLXVideoSourceSGIX },
+#endif
+
+ /*** GLX_EXT_import_context ***/
+ { "glXFreeContextEXT", (__GLXextFuncPtr) glXFreeContextEXT },
+ { "glXGetContextIDEXT", (__GLXextFuncPtr) glXGetContextIDEXT },
+ { "glXGetCurrentDisplayEXT", (__GLXextFuncPtr) glXGetCurrentDisplayEXT },
+ { "glXImportContextEXT", (__GLXextFuncPtr) glXImportContextEXT },
+ { "glXQueryContextInfoEXT", (__GLXextFuncPtr) glXQueryContextInfoEXT },
+
+ /*** GLX_SGIX_fbconfig ***/
+ { "glXGetFBConfigAttribSGIX", (__GLXextFuncPtr) glXGetFBConfigAttribSGIX },
+ { "glXChooseFBConfigSGIX", (__GLXextFuncPtr) glXChooseFBConfigSGIX },
+ { "glXCreateGLXPixmapWithConfigSGIX", (__GLXextFuncPtr) glXCreateGLXPixmapWithConfigSGIX },
+ { "glXCreateContextWithConfigSGIX", (__GLXextFuncPtr) glXCreateContextWithConfigSGIX },
+ { "glXGetVisualFromFBConfigSGIX", (__GLXextFuncPtr) glXGetVisualFromFBConfigSGIX },
+ { "glXGetFBConfigFromVisualSGIX", (__GLXextFuncPtr) glXGetFBConfigFromVisualSGIX },
+
+ /*** GLX_SGIX_pbuffer ***/
+ { "glXCreateGLXPbufferSGIX", (__GLXextFuncPtr) glXCreateGLXPbufferSGIX },
+ { "glXDestroyGLXPbufferSGIX", (__GLXextFuncPtr) glXDestroyGLXPbufferSGIX },
+ { "glXQueryGLXPbufferSGIX", (__GLXextFuncPtr) glXQueryGLXPbufferSGIX },
+ { "glXSelectEventSGIX", (__GLXextFuncPtr) glXSelectEventSGIX },
+ { "glXGetSelectedEventSGIX", (__GLXextFuncPtr) glXGetSelectedEventSGIX },
+
+ /*** GLX_SGI_cushion ***/
+ { "glXCushionSGI", (__GLXextFuncPtr) glXCushionSGI },
+
+ /*** GLX_SGIX_video_resize ***/
+ { "glXBindChannelToWindowSGIX", (__GLXextFuncPtr) glXBindChannelToWindowSGIX },
+ { "glXChannelRectSGIX", (__GLXextFuncPtr) glXChannelRectSGIX },
+ { "glXQueryChannelRectSGIX", (__GLXextFuncPtr) glXQueryChannelRectSGIX },
+ { "glXQueryChannelDeltasSGIX", (__GLXextFuncPtr) glXQueryChannelDeltasSGIX },
+ { "glXChannelRectSyncSGIX", (__GLXextFuncPtr) glXChannelRectSyncSGIX },
+
+ /*** GLX_SGIX_dmbuffer **/
+#if defined(_DM_BUFFER_H_)
+ { "glXAssociateDMPbufferSGIX", (__GLXextFuncPtr) glXAssociateDMPbufferSGIX },
+#endif
+
+ /*** GLX_SUN_get_transparent_index ***/
+ { "glXGetTransparentIndexSUN", (__GLXextFuncPtr) glXGetTransparentIndexSUN },
+
+ /*** GLX_MESA_copy_sub_buffer ***/
+ { "glXCopySubBufferMESA", (__GLXextFuncPtr) glXCopySubBufferMESA },
+
+ /*** GLX_MESA_pixmap_colormap ***/
+ { "glXCreateGLXPixmapMESA", (__GLXextFuncPtr) glXCreateGLXPixmapMESA },
+
+ /*** GLX_MESA_release_buffers ***/
+ { "glXReleaseBuffersMESA", (__GLXextFuncPtr) glXReleaseBuffersMESA },
+
+ /*** GLX_ARB_get_proc_address ***/
+ { "glXGetProcAddressARB", (__GLXextFuncPtr) glXGetProcAddressARB },
+
+ /*** GLX_ARB_create_context ***/
+ { "glXCreateContextAttribsARB", (__GLXextFuncPtr) glXCreateContextAttribsARB },
+
+ /*** GLX_EXT_texture_from_pixmap ***/
+ { "glXBindTexImageEXT", (__GLXextFuncPtr) glXBindTexImageEXT },
+ { "glXReleaseTexImageEXT", (__GLXextFuncPtr) glXReleaseTexImageEXT },
+
+ { NULL, NULL } /* end of list */
+};
+
+
+
+/**
+ * Return address of named glX function, or NULL if not found.
+ */
+static __GLXextFuncPtr
+_glxapi_get_proc_address(const char *funcName)
+{
+ GLuint i;
+ for (i = 0; GLX_functions[i].Name; i++) {
+ if (strcmp(GLX_functions[i].Name, funcName) == 0)
+ return GLX_functions[i].Address;
+ }
+ return NULL;
+}
+
+
+PUBLIC __GLXextFuncPtr
+glXGetProcAddressARB(const GLubyte *procName)
+{
+ __GLXextFuncPtr f;
+
+ f = _glxapi_get_proc_address((const char *) procName);
+ if (f) {
+ return f;
+ }
+
+ f = (__GLXextFuncPtr) _glapi_get_proc_address((const char *) procName);
+ return f;
+}
+
+
+/* GLX 1.4 */
+PUBLIC
+void (*glXGetProcAddress(const GLubyte *procName))()
+{
+ return glXGetProcAddressARB(procName);
+}
diff --git a/src/gallium/frontends/glx/xlib/glx_usefont.c b/src/gallium/frontends/glx/xlib/glx_usefont.c
new file mode 100644
index 00000000000..9d35054b44d
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/glx_usefont.c
@@ -0,0 +1,373 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1995 Thorsten.Ohl @ Physik.TH-Darmstadt.de
+ * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Fake implementation of glXUseXFont().
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <GL/glx.h>
+#include "main/errors.h"
+
+
+/* Some debugging info. */
+
+#ifdef DEBUG
+#include <ctype.h>
+
+int debug_xfonts = 0;
+
+static void
+dump_char_struct(XCharStruct * ch, char *prefix)
+{
+ printf("%slbearing = %d, rbearing = %d, width = %d\n",
+ prefix, ch->lbearing, ch->rbearing, ch->width);
+ printf("%sascent = %d, descent = %d, attributes = %u\n",
+ prefix, ch->ascent, ch->descent, (unsigned int) ch->attributes);
+}
+
+static void
+dump_font_struct(XFontStruct * font)
+{
+ printf("ascent = %d, descent = %d\n", font->ascent, font->descent);
+ printf("char_or_byte2 = (%u,%u)\n",
+ font->min_char_or_byte2, font->max_char_or_byte2);
+ printf("byte1 = (%u,%u)\n", font->min_byte1, font->max_byte1);
+ printf("all_chars_exist = %s\n", font->all_chars_exist ? "True" : "False");
+ printf("default_char = %c (\\%03o)\n",
+ (char) (isprint(font->default_char) ? font->default_char : ' '),
+ font->default_char);
+ dump_char_struct(&font->min_bounds, "min> ");
+ dump_char_struct(&font->max_bounds, "max> ");
+#if 0
+ for (c = font->min_char_or_byte2; c <= font->max_char_or_byte2; c++) {
+ char prefix[8];
+ sprintf(prefix, "%d> ", c);
+ dump_char_struct(&font->per_char[c], prefix);
+ }
+#endif
+}
+
+static void
+dump_bitmap(unsigned int width, unsigned int height, GLubyte * bitmap)
+{
+ unsigned int x, y;
+
+ printf(" ");
+ for (x = 0; x < 8 * width; x++)
+ printf("%o", 7 - (x % 8));
+ putchar('\n');
+ for (y = 0; y < height; y++) {
+ printf("%3o:", y);
+ for (x = 0; x < 8 * width; x++)
+ putchar((bitmap[width * (height - y - 1) + x / 8] & (1 << (7 - (x %
+ 8))))
+ ? '*' : '.');
+ printf(" ");
+ for (x = 0; x < width; x++)
+ printf("0x%02x, ", bitmap[width * (height - y - 1) + x]);
+ putchar('\n');
+ }
+}
+#endif /* DEBUG */
+
+
+/* Implementation. */
+
+/* Fill a BITMAP with a character C from thew current font
+ in the graphics context GC. WIDTH is the width in bytes
+ and HEIGHT is the height in bits.
+
+ Note that the generated bitmaps must be used with
+
+ glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
+ glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
+ glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
+ glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
+ glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+
+ Possible optimizations:
+
+ * use only one reusable pixmap with the maximum dimensions.
+ * draw the entire font into a single pixmap (careful with
+ proportional fonts!).
+*/
+
+
+/*
+ * Generate OpenGL-compatible bitmap.
+ */
+static void
+fill_bitmap(Display * dpy, Window win, GC gc,
+ unsigned int width, unsigned int height,
+ int x0, int y0, unsigned int c, GLubyte * bitmap)
+{
+ XImage *image;
+ unsigned int x, y;
+ Pixmap pixmap;
+ XChar2b char2b;
+
+ pixmap = XCreatePixmap(dpy, win, 8 * width, height, 1);
+ XSetForeground(dpy, gc, 0);
+ XFillRectangle(dpy, pixmap, gc, 0, 0, 8 * width, height);
+ XSetForeground(dpy, gc, 1);
+
+ char2b.byte1 = (c >> 8) & 0xff;
+ char2b.byte2 = (c & 0xff);
+
+ XDrawString16(dpy, pixmap, gc, x0, y0, &char2b, 1);
+
+ image = XGetImage(dpy, pixmap, 0, 0, 8 * width, height, 1, XYPixmap);
+ if (image) {
+ /* Fill the bitmap (X11 and OpenGL are upside down wrt each other). */
+ for (y = 0; y < height; y++)
+ for (x = 0; x < 8 * width; x++)
+ if (XGetPixel(image, x, y))
+ bitmap[width * (height - y - 1) + x / 8] |=
+ (1 << (7 - (x % 8)));
+ XDestroyImage(image);
+ }
+
+ XFreePixmap(dpy, pixmap);
+}
+
+/*
+ * determine if a given glyph is valid and return the
+ * corresponding XCharStruct.
+ */
+static XCharStruct *
+isvalid(XFontStruct * fs, unsigned int which)
+{
+ unsigned int rows, pages;
+ unsigned int byte1 = 0, byte2 = 0;
+ int i, valid = 1;
+
+ rows = fs->max_byte1 - fs->min_byte1 + 1;
+ pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1;
+
+ if (rows == 1) {
+ /* "linear" fonts */
+ if ((fs->min_char_or_byte2 > which) || (fs->max_char_or_byte2 < which))
+ valid = 0;
+ }
+ else {
+ /* "matrix" fonts */
+ byte2 = which & 0xff;
+ byte1 = which >> 8;
+ if ((fs->min_char_or_byte2 > byte2) ||
+ (fs->max_char_or_byte2 < byte2) ||
+ (fs->min_byte1 > byte1) || (fs->max_byte1 < byte1))
+ valid = 0;
+ }
+
+ if (valid) {
+ if (fs->per_char) {
+ if (rows == 1) {
+ /* "linear" fonts */
+ return (fs->per_char + (which - fs->min_char_or_byte2));
+ }
+ else {
+ /* "matrix" fonts */
+ i = ((byte1 - fs->min_byte1) * pages) +
+ (byte2 - fs->min_char_or_byte2);
+ return (fs->per_char + i);
+ }
+ }
+ else {
+ return (&fs->min_bounds);
+ }
+ }
+ return (NULL);
+}
+
+
+PUBLIC void
+glXUseXFont(Font font, int first, int count, int listbase)
+{
+ Display *dpy;
+ Window win;
+ Pixmap pixmap;
+ GC gc;
+ XGCValues values;
+ unsigned long valuemask;
+ XFontStruct *fs;
+ GLint swapbytes, lsbfirst, rowlength;
+ GLint skiprows, skippixels, alignment;
+ unsigned int max_width, max_height, max_bm_width, max_bm_height;
+ GLubyte *bm;
+ int i;
+
+ dpy = glXGetCurrentDisplay();
+ if (!dpy)
+ return; /* I guess glXMakeCurrent wasn't called */
+ i = DefaultScreen(dpy);
+ win = RootWindow(dpy, i);
+
+ fs = XQueryFont(dpy, font);
+ if (!fs) {
+ _mesa_error(NULL, GL_INVALID_VALUE,
+ "Couldn't get font structure information");
+ return;
+ }
+
+ /* Allocate a bitmap that can fit all characters. */
+ max_width = fs->max_bounds.rbearing - fs->min_bounds.lbearing;
+ max_height = fs->max_bounds.ascent + fs->max_bounds.descent;
+ max_bm_width = (max_width + 7) / 8;
+ max_bm_height = max_height;
+
+ bm = malloc((max_bm_width * max_bm_height) * sizeof(GLubyte));
+ if (!bm) {
+ XFreeFontInfo(NULL, fs, 1);
+ _mesa_error(NULL, GL_OUT_OF_MEMORY,
+ "Couldn't allocate bitmap in glXUseXFont()");
+ return;
+ }
+
+#if 0
+ /* get the page info */
+ pages = fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1;
+ firstchar = (fs->min_byte1 << 8) + fs->min_char_or_byte2;
+ lastchar = (fs->max_byte1 << 8) + fs->max_char_or_byte2;
+ rows = fs->max_byte1 - fs->min_byte1 + 1;
+ unsigned int first_char, last_char, pages, rows;
+#endif
+
+ /* Save the current packing mode for bitmaps. */
+ glGetIntegerv(GL_UNPACK_SWAP_BYTES, &swapbytes);
+ glGetIntegerv(GL_UNPACK_LSB_FIRST, &lsbfirst);
+ glGetIntegerv(GL_UNPACK_ROW_LENGTH, &rowlength);
+ glGetIntegerv(GL_UNPACK_SKIP_ROWS, &skiprows);
+ glGetIntegerv(GL_UNPACK_SKIP_PIXELS, &skippixels);
+ glGetIntegerv(GL_UNPACK_ALIGNMENT, &alignment);
+
+ /* Enforce a standard packing mode which is compatible with
+ fill_bitmap() from above. This is actually the default mode,
+ except for the (non)alignment. */
+ glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
+ glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+ pixmap = XCreatePixmap(dpy, win, 10, 10, 1);
+ values.foreground = BlackPixel(dpy, DefaultScreen(dpy));
+ values.background = WhitePixel(dpy, DefaultScreen(dpy));
+ values.font = fs->fid;
+ valuemask = GCForeground | GCBackground | GCFont;
+ gc = XCreateGC(dpy, pixmap, valuemask, &values);
+ XFreePixmap(dpy, pixmap);
+
+#ifdef DEBUG
+ if (debug_xfonts)
+ dump_font_struct(fs);
+#endif
+
+ for (i = 0; i < count; i++) {
+ unsigned int width, height, bm_width, bm_height;
+ GLfloat x0, y0, dx, dy;
+ XCharStruct *ch;
+ int x, y;
+ unsigned int c = first + i;
+ int list = listbase + i;
+ int valid;
+
+ /* check on index validity and get the bounds */
+ ch = isvalid(fs, c);
+ if (!ch) {
+ ch = &fs->max_bounds;
+ valid = 0;
+ }
+ else {
+ valid = 1;
+ }
+
+#ifdef DEBUG
+ if (debug_xfonts) {
+ char s[7];
+ sprintf(s, isprint(c) ? "%c> " : "\\%03o> ", c);
+ dump_char_struct(ch, s);
+ }
+#endif
+
+ /* glBitmap()' parameters:
+ straight from the glXUseXFont(3) manpage. */
+ width = ch->rbearing - ch->lbearing;
+ height = ch->ascent + ch->descent;
+ x0 = -ch->lbearing;
+ y0 = ch->descent - 0; /* XXX used to subtract 1 here */
+ /* but that caused a conformace failure */
+ dx = ch->width;
+ dy = 0;
+
+ /* X11's starting point. */
+ x = -ch->lbearing;
+ y = ch->ascent;
+
+ /* Round the width to a multiple of eight. We will use this also
+ for the pixmap for capturing the X11 font. This is slightly
+ inefficient, but it makes the OpenGL part real easy. */
+ bm_width = (width + 7) / 8;
+ bm_height = height;
+
+ glNewList(list, GL_COMPILE);
+ if (valid && (bm_width > 0) && (bm_height > 0)) {
+
+ memset(bm, '\0', bm_width * bm_height);
+ fill_bitmap(dpy, win, gc, bm_width, bm_height, x, y, c, bm);
+
+ glBitmap(width, height, x0, y0, dx, dy, bm);
+#ifdef DEBUG
+ if (debug_xfonts) {
+ printf("width/height = %u/%u\n", width, height);
+ printf("bm_width/bm_height = %u/%u\n", bm_width, bm_height);
+ dump_bitmap(bm_width, bm_height, bm);
+ }
+#endif
+ }
+ else {
+ glBitmap(0, 0, 0.0, 0.0, dx, dy, NULL);
+ }
+ glEndList();
+ }
+
+ free(bm);
+ XFreeFontInfo(NULL, fs, 1);
+ XFreeGC(dpy, gc);
+
+ /* Restore saved packing modes. */
+ glPixelStorei(GL_UNPACK_SWAP_BYTES, swapbytes);
+ glPixelStorei(GL_UNPACK_LSB_FIRST, lsbfirst);
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, rowlength);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, skiprows);
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, skippixels);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
+}
diff --git a/src/gallium/frontends/glx/xlib/meson.build b/src/gallium/frontends/glx/xlib/meson.build
new file mode 100644
index 00000000000..7b1fdb34ffe
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/meson.build
@@ -0,0 +1,27 @@
+# Copyright © 2017 Intel Corporation
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+libxlib = static_library(
+ 'xlib',
+ files('glx_api.c', 'glx_getproc.c', 'glx_usefont.c', 'xm_api.c', 'xm_st.c'),
+ c_args : c_vis_args,
+ include_directories : [inc_include, inc_src, inc_gallium, inc_gallium_aux, inc_mapi, inc_mesa],
+ dependencies : [dep_x11, dep_xext, dep_xcb, dep_glproto],
+)
diff --git a/src/gallium/frontends/glx/xlib/xm_api.c b/src/gallium/frontends/glx/xlib/xm_api.c
new file mode 100644
index 00000000000..e0e0b2d992c
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/xm_api.c
@@ -0,0 +1,1561 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file xm_api.c
+ *
+ * All the XMesa* API functions.
+ *
+ *
+ * NOTES:
+ *
+ * The window coordinate system origin (0,0) is in the lower-left corner
+ * of the window. X11's window coordinate origin is in the upper-left
+ * corner of the window. Therefore, most drawing functions in this
+ * file have to flip Y coordinates.
+ *
+ *
+ * Byte swapping: If the Mesa host and the X display use a different
+ * byte order then there's some trickiness to be aware of when using
+ * XImages. The byte ordering used for the XImage is that of the X
+ * display, not the Mesa host.
+ * The color-to-pixel encoding for True/DirectColor must be done
+ * according to the display's visual red_mask, green_mask, and blue_mask.
+ * If XPutPixel is used to put a pixel into an XImage then XPutPixel will
+ * do byte swapping if needed. If one wants to directly "poke" the pixel
+ * into the XImage's buffer then the pixel must be byte swapped first.
+ *
+ */
+
+#ifdef __CYGWIN__
+#undef WIN32
+#undef __WIN32__
+#endif
+
+#include <stdio.h>
+#include "xm_api.h"
+#include "xm_st.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_state.h"
+#include "frontend/api.h"
+
+#include "util/u_atomic.h"
+#include "util/u_inlines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "hud/hud_context.h"
+
+#include "main/errors.h"
+
+#include "xm_public.h"
+#include <GL/glx.h>
+
+
+/* Driver interface routines, set up by xlib backend on library
+ * _init(). These are global in the same way that function names are
+ * global.
+ */
+static struct xm_driver driver;
+static struct st_api *stapi;
+
+/* Default strict invalidate to false. This means we will not call
+ * XGetGeometry after every swapbuffers, which allows swapbuffers to
+ * remain asynchronous. For apps running at 100fps with synchronous
+ * swapping, a 10% boost is typical. For gears, I see closer to 20%
+ * speedup.
+ *
+ * Note that the work of copying data on swapbuffers doesn't disappear
+ * - this change just allows the X server to execute the PutImage
+ * asynchronously without us effectively blocked until its completion.
+ *
+ * This speeds up even llvmpipe's threaded rasterization as the
+ * swapbuffers operation was a large part of the serial component of
+ * an llvmpipe frame.
+ *
+ * The downside of this is correctness - applications which don't call
+ * glViewport on window resizes will get incorrect rendering. A
+ * better solution would be to have per-frame but asynchronous
+ * invalidation. Xcb almost looks as if it could provide this, but
+ * the API doesn't seem to quite be there.
+ */
+boolean xmesa_strict_invalidate = FALSE;
+
+void xmesa_set_driver( const struct xm_driver *templ )
+{
+ driver = *templ;
+ stapi = driver.create_st_api();
+
+ xmesa_strict_invalidate =
+ debug_get_bool_option("XMESA_STRICT_INVALIDATE", FALSE);
+}
+
+
+static int
+xmesa_get_param(struct st_manager *smapi,
+ enum st_manager_param param)
+{
+ switch(param) {
+ case ST_MANAGER_BROKEN_INVALIDATE:
+ return !xmesa_strict_invalidate;
+ default:
+ return 0;
+ }
+}
+
+/* linked list of XMesaDisplay hooks per display */
+typedef struct _XMesaExtDisplayInfo {
+ struct _XMesaExtDisplayInfo *next;
+ Display *display;
+ struct xmesa_display mesaDisplay;
+} XMesaExtDisplayInfo;
+
+typedef struct _XMesaExtInfo {
+ XMesaExtDisplayInfo *head;
+ int ndisplays;
+} XMesaExtInfo;
+
+static XMesaExtInfo MesaExtInfo;
+
+/* hook to delete XMesaDisplay on XDestroyDisplay */
+extern void
+xmesa_close_display(Display *display)
+{
+ XMesaExtDisplayInfo *info, *prev;
+
+ /* These assertions are not valid since screen creation can fail and result
+ * in an empty list
+ assert(MesaExtInfo.ndisplays > 0);
+ assert(MesaExtInfo.head);
+ */
+
+ _XLockMutex(_Xglobal_lock);
+ /* first find display */
+ prev = NULL;
+ for (info = MesaExtInfo.head; info; info = info->next) {
+ if (info->display == display) {
+ prev = info;
+ break;
+ }
+ }
+
+ if (info == NULL) {
+ /* no display found */
+ _XUnlockMutex(_Xglobal_lock);
+ return;
+ }
+
+ /* remove display entry from list */
+ if (prev != MesaExtInfo.head) {
+ prev->next = info->next;
+ } else {
+ MesaExtInfo.head = info->next;
+ }
+ MesaExtInfo.ndisplays--;
+
+ _XUnlockMutex(_Xglobal_lock);
+
+ /* don't forget to clean up mesaDisplay */
+ XMesaDisplay xmdpy = &info->mesaDisplay;
+
+ /**
+ * XXX: Don't destroy the screens here, since there may still
+ * be some dangling screen pointers that are used after this point
+ * if (xmdpy->screen) {
+ * xmdpy->screen->destroy(xmdpy->screen);
+ * }
+ */
+
+ if (xmdpy->smapi->destroy)
+ xmdpy->smapi->destroy(xmdpy->smapi);
+ free(xmdpy->smapi);
+
+ XFree((char *) info);
+}
+
+static XMesaDisplay
+xmesa_init_display( Display *display )
+{
+ static mtx_t init_mutex = _MTX_INITIALIZER_NP;
+ XMesaDisplay xmdpy;
+ XMesaExtDisplayInfo *info;
+
+ if (display == NULL) {
+ return NULL;
+ }
+
+ mtx_lock(&init_mutex);
+
+ /* Look for XMesaDisplay which corresponds to this display */
+ info = MesaExtInfo.head;
+ while(info) {
+ if (info->display == display) {
+ /* Found it */
+ mtx_unlock(&init_mutex);
+ return &info->mesaDisplay;
+ }
+ info = info->next;
+ }
+
+ /* Not found. Create new XMesaDisplay */
+ /* first allocate X-related resources and hook destroy callback */
+
+ /* allocate mesa display info */
+ info = (XMesaExtDisplayInfo *) Xmalloc(sizeof(XMesaExtDisplayInfo));
+ if (info == NULL) {
+ mtx_unlock(&init_mutex);
+ return NULL;
+ }
+ info->display = display;
+
+ xmdpy = &info->mesaDisplay; /* to be filled out below */
+ xmdpy->display = display;
+ xmdpy->pipe = NULL;
+
+ xmdpy->smapi = CALLOC_STRUCT(st_manager);
+ if (!xmdpy->smapi) {
+ Xfree(info);
+ mtx_unlock(&init_mutex);
+ return NULL;
+ }
+
+ xmdpy->screen = driver.create_pipe_screen(display);
+ if (!xmdpy->screen) {
+ free(xmdpy->smapi);
+ Xfree(info);
+ mtx_unlock(&init_mutex);
+ return NULL;
+ }
+
+ /* At this point, both smapi and screen are known to be valid */
+ xmdpy->smapi->screen = xmdpy->screen;
+ xmdpy->smapi->get_param = xmesa_get_param;
+ (void) mtx_init(&xmdpy->mutex, mtx_plain);
+
+ /* chain to the list of displays */
+ _XLockMutex(_Xglobal_lock);
+ info->next = MesaExtInfo.head;
+ MesaExtInfo.head = info;
+ MesaExtInfo.ndisplays++;
+ _XUnlockMutex(_Xglobal_lock);
+
+ mtx_unlock(&init_mutex);
+
+ return xmdpy;
+}
+
+
+/**********************************************************************/
+/***** X Utility Functions *****/
+/**********************************************************************/
+
+
+/**
+ * Return the host's byte order as LSBFirst or MSBFirst ala X.
+ */
+static int host_byte_order( void )
+{
+ int i = 1;
+ char *cptr = (char *) &i;
+ return (*cptr==1) ? LSBFirst : MSBFirst;
+}
+
+
+
+
+/**
+ * Return the true number of bits per pixel for XImages.
+ * For example, if we request a 24-bit deep visual we may actually need/get
+ * 32bpp XImages. This function returns the appropriate bpp.
+ * Input: dpy - the X display
+ * visinfo - desribes the visual to be used for XImages
+ * Return: true number of bits per pixel for XImages
+ */
+static int
+bits_per_pixel( XMesaVisual xmv )
+{
+ Display *dpy = xmv->display;
+ XVisualInfo * visinfo = xmv->visinfo;
+ XImage *img;
+ int bitsPerPixel;
+ /* Create a temporary XImage */
+ img = XCreateImage( dpy, visinfo->visual, visinfo->depth,
+ ZPixmap, 0, /*format, offset*/
+ malloc(8), /*data*/
+ 1, 1, /*width, height*/
+ 32, /*bitmap_pad*/
+ 0 /*bytes_per_line*/
+ );
+ assert(img);
+ /* grab the bits/pixel value */
+ bitsPerPixel = img->bits_per_pixel;
+ /* free the XImage */
+ free( img->data );
+ img->data = NULL;
+ XDestroyImage( img );
+ return bitsPerPixel;
+}
+
+
+
+/*
+ * Determine if a given X window ID is valid (window exists).
+ * Do this by calling XGetWindowAttributes() for the window and
+ * checking if we catch an X error.
+ * Input: dpy - the display
+ * win - the window to check for existence
+ * Return: GL_TRUE - window exists
+ * GL_FALSE - window doesn't exist
+ */
+static GLboolean WindowExistsFlag;
+
+static int window_exists_err_handler( Display* dpy, XErrorEvent* xerr )
+{
+ (void) dpy;
+ if (xerr->error_code == BadWindow) {
+ WindowExistsFlag = GL_FALSE;
+ }
+ return 0;
+}
+
+static GLboolean window_exists( Display *dpy, Window win )
+{
+ XWindowAttributes wa;
+ int (*old_handler)( Display*, XErrorEvent* );
+ WindowExistsFlag = GL_TRUE;
+ old_handler = XSetErrorHandler(window_exists_err_handler);
+ XGetWindowAttributes( dpy, win, &wa ); /* dummy request */
+ XSetErrorHandler(old_handler);
+ return WindowExistsFlag;
+}
+
+static Status
+get_drawable_size( Display *dpy, Drawable d, uint *width, uint *height )
+{
+ Window root;
+ Status stat;
+ int xpos, ypos;
+ unsigned int w, h, bw, depth;
+ stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth);
+ *width = w;
+ *height = h;
+ return stat;
+}
+
+
+/**
+ * Return the size of the window (or pixmap) that corresponds to the
+ * given XMesaBuffer.
+ * \param width returns width in pixels
+ * \param height returns height in pixels
+ */
+void
+xmesa_get_window_size(Display *dpy, XMesaBuffer b,
+ GLuint *width, GLuint *height)
+{
+ XMesaDisplay xmdpy = xmesa_init_display(dpy);
+ Status stat;
+
+ mtx_lock(&xmdpy->mutex);
+ stat = get_drawable_size(dpy, b->ws.drawable, width, height);
+ mtx_unlock(&xmdpy->mutex);
+
+ if (!stat) {
+ /* probably querying a window that's recently been destroyed */
+ _mesa_warning(NULL, "XGetGeometry failed!\n");
+ *width = *height = 1;
+ }
+}
+
+#define GET_REDMASK(__v) __v->mesa_visual.redMask
+#define GET_GREENMASK(__v) __v->mesa_visual.greenMask
+#define GET_BLUEMASK(__v) __v->mesa_visual.blueMask
+
+
+/**
+ * Choose the pixel format for the given visual.
+ * This will tell the gallium driver how to pack pixel data into
+ * drawing surfaces.
+ */
+static GLuint
+choose_pixel_format(XMesaVisual v)
+{
+ boolean native_byte_order = (host_byte_order() ==
+ ImageByteOrder(v->display));
+
+ if ( GET_REDMASK(v) == 0x0000ff
+ && GET_GREENMASK(v) == 0x00ff00
+ && GET_BLUEMASK(v) == 0xff0000
+ && v->BitsPerPixel == 32) {
+ if (native_byte_order) {
+ /* no byteswapping needed */
+ return PIPE_FORMAT_RGBA8888_UNORM;
+ }
+ else {
+ return PIPE_FORMAT_ABGR8888_UNORM;
+ }
+ }
+ else if ( GET_REDMASK(v) == 0xff0000
+ && GET_GREENMASK(v) == 0x00ff00
+ && GET_BLUEMASK(v) == 0x0000ff
+ && v->BitsPerPixel == 32) {
+ if (native_byte_order) {
+ /* no byteswapping needed */
+ return PIPE_FORMAT_BGRA8888_UNORM;
+ }
+ else {
+ return PIPE_FORMAT_ARGB8888_UNORM;
+ }
+ }
+ else if ( GET_REDMASK(v) == 0x0000ff00
+ && GET_GREENMASK(v) == 0x00ff0000
+ && GET_BLUEMASK(v) == 0xff000000
+ && v->BitsPerPixel == 32) {
+ if (native_byte_order) {
+ /* no byteswapping needed */
+ return PIPE_FORMAT_ARGB8888_UNORM;
+ }
+ else {
+ return PIPE_FORMAT_BGRA8888_UNORM;
+ }
+ }
+ else if ( GET_REDMASK(v) == 0xf800
+ && GET_GREENMASK(v) == 0x07e0
+ && GET_BLUEMASK(v) == 0x001f
+ && native_byte_order
+ && v->BitsPerPixel == 16) {
+ /* 5-6-5 RGB */
+ return PIPE_FORMAT_B5G6R5_UNORM;
+ }
+
+ return PIPE_FORMAT_NONE;
+}
+
+
+/**
+ * Choose a depth/stencil format that satisfies the given depth and
+ * stencil sizes.
+ */
+static enum pipe_format
+choose_depth_stencil_format(XMesaDisplay xmdpy, int depth, int stencil,
+ int sample_count)
+{
+ const enum pipe_texture_target target = PIPE_TEXTURE_2D;
+ const unsigned tex_usage = PIPE_BIND_DEPTH_STENCIL;
+ enum pipe_format formats[8], fmt;
+ int count, i;
+
+ count = 0;
+
+ if (depth <= 16 && stencil == 0) {
+ formats[count++] = PIPE_FORMAT_Z16_UNORM;
+ }
+ if (depth <= 24 && stencil == 0) {
+ formats[count++] = PIPE_FORMAT_X8Z24_UNORM;
+ formats[count++] = PIPE_FORMAT_Z24X8_UNORM;
+ }
+ if (depth <= 24 && stencil <= 8) {
+ formats[count++] = PIPE_FORMAT_S8_UINT_Z24_UNORM;
+ formats[count++] = PIPE_FORMAT_Z24_UNORM_S8_UINT;
+ }
+ if (depth <= 32 && stencil == 0) {
+ formats[count++] = PIPE_FORMAT_Z32_UNORM;
+ }
+
+ fmt = PIPE_FORMAT_NONE;
+ for (i = 0; i < count; i++) {
+ if (xmdpy->screen->is_format_supported(xmdpy->screen, formats[i],
+ target, sample_count,
+ sample_count, tex_usage)) {
+ fmt = formats[i];
+ break;
+ }
+ }
+
+ return fmt;
+}
+
+
+
+/**********************************************************************/
+/***** Linked list of XMesaBuffers *****/
+/**********************************************************************/
+
+static XMesaBuffer XMesaBufferList = NULL;
+
+
+/**
+ * Allocate a new XMesaBuffer object which corresponds to the given drawable.
+ * Note that XMesaBuffer is derived from struct gl_framebuffer.
+ * The new XMesaBuffer will not have any size (Width=Height=0).
+ *
+ * \param d the corresponding X drawable (window or pixmap)
+ * \param type either WINDOW, PIXMAP or PBUFFER, describing d
+ * \param vis the buffer's visual
+ * \param cmap the window's colormap, if known.
+ * \return new XMesaBuffer or NULL if any problem
+ */
+static XMesaBuffer
+create_xmesa_buffer(Drawable d, BufferType type,
+ XMesaVisual vis, Colormap cmap)
+{
+ XMesaDisplay xmdpy = xmesa_init_display(vis->display);
+ XMesaBuffer b;
+
+ assert(type == WINDOW || type == PIXMAP || type == PBUFFER);
+
+ if (!xmdpy)
+ return NULL;
+
+ b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer);
+ if (!b)
+ return NULL;
+
+ b->ws.drawable = d;
+ b->ws.visual = vis->visinfo->visual;
+ b->ws.depth = vis->visinfo->depth;
+
+ b->xm_visual = vis;
+ b->type = type;
+ b->cmap = cmap;
+
+ get_drawable_size(vis->display, d, &b->width, &b->height);
+
+ /*
+ * Create framebuffer, but we'll plug in our own renderbuffers below.
+ */
+ b->stfb = xmesa_create_st_framebuffer(xmdpy, b);
+
+ /* GLX_EXT_texture_from_pixmap */
+ b->TextureTarget = 0;
+ b->TextureFormat = GLX_TEXTURE_FORMAT_NONE_EXT;
+ b->TextureMipmap = 0;
+
+ /* insert buffer into linked list */
+ b->Next = XMesaBufferList;
+ XMesaBufferList = b;
+
+ return b;
+}
+
+
+/**
+ * Find an XMesaBuffer by matching X display and colormap but NOT matching
+ * the notThis buffer.
+ */
+XMesaBuffer
+xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis)
+{
+ XMesaBuffer b;
+ for (b = XMesaBufferList; b; b = b->Next) {
+ if (b->xm_visual->display == dpy &&
+ b->cmap == cmap &&
+ b != notThis) {
+ return b;
+ }
+ }
+ return NULL;
+}
+
+
+/**
+ * Remove buffer from linked list, delete if no longer referenced.
+ */
+static void
+xmesa_free_buffer(XMesaBuffer buffer)
+{
+ XMesaBuffer prev = NULL, b;
+
+ for (b = XMesaBufferList; b; b = b->Next) {
+ if (b == buffer) {
+ /* unlink buffer from list */
+ if (prev)
+ prev->Next = buffer->Next;
+ else
+ XMesaBufferList = buffer->Next;
+
+ /* Since the X window for the XMesaBuffer is going away, we don't
+ * want to dereference this pointer in the future.
+ */
+ b->ws.drawable = 0;
+
+ /* Notify the st manager that the associated framebuffer interface
+ * object is no longer valid.
+ */
+ stapi->destroy_drawable(stapi, buffer->stfb);
+
+ /* XXX we should move the buffer to a delete-pending list and destroy
+ * the buffer until it is no longer current.
+ */
+ xmesa_destroy_st_framebuffer(buffer->stfb);
+
+ free(buffer);
+
+ return;
+ }
+ /* continue search */
+ prev = b;
+ }
+ /* buffer not found in XMesaBufferList */
+ _mesa_problem(NULL,"xmesa_free_buffer() - buffer not found\n");
+}
+
+
+
+/**********************************************************************/
+/***** Misc Private Functions *****/
+/**********************************************************************/
+
+
+/**
+ * When a context is bound for the first time, we can finally finish
+ * initializing the context's visual and buffer information.
+ * \param v the XMesaVisual to initialize
+ * \param b the XMesaBuffer to initialize (may be NULL)
+ * \param window the window/pixmap we're rendering into
+ * \param cmap the colormap associated with the window/pixmap
+ * \return GL_TRUE=success, GL_FALSE=failure
+ */
+static GLboolean
+initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
+ Drawable window, Colormap cmap)
+{
+ assert(!b || b->xm_visual == v);
+
+ /* Save true bits/pixel */
+ v->BitsPerPixel = bits_per_pixel(v);
+ assert(v->BitsPerPixel > 0);
+
+ /* RGB WINDOW:
+ * We support RGB rendering into almost any kind of visual.
+ */
+ const int xclass = v->visualType;
+ if (xclass != GLX_TRUE_COLOR && xclass != GLX_DIRECT_COLOR) {
+ _mesa_warning(NULL,
+ "XMesa: RGB mode rendering not supported in given visual.\n");
+ return GL_FALSE;
+ }
+
+ if (v->BitsPerPixel == 32) {
+ /* We use XImages for all front/back buffers. If an X Window or
+ * X Pixmap is 32bpp, there's no guarantee that the alpha channel
+ * will be preserved. For XImages we're in luck.
+ */
+ v->mesa_visual.alphaBits = 8;
+ }
+
+ /*
+ * If MESA_INFO env var is set print out some debugging info
+ * which can help Brian figure out what's going on when a user
+ * reports bugs.
+ */
+ if (getenv("MESA_INFO")) {
+ printf("X/Mesa visual = %p\n", (void *) v);
+ printf("X/Mesa level = %d\n", v->mesa_visual.level);
+ printf("X/Mesa depth = %d\n", v->visinfo->depth);
+ printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel);
+ }
+
+ return GL_TRUE;
+}
+
+
+
+#define NUM_VISUAL_TYPES 6
+
+/**
+ * Convert an X visual type to a GLX visual type.
+ *
+ * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
+ * to be converted.
+ * \return If \c visualType is a valid X visual type, a GLX visual type will
+ * be returned. Otherwise \c GLX_NONE will be returned.
+ *
+ * \note
+ * This code was lifted directly from lib/GL/glx/glcontextmodes.c in the
+ * DRI CVS tree.
+ */
+static GLint
+xmesa_convert_from_x_visual_type( int visualType )
+{
+ static const int glx_visual_types[ NUM_VISUAL_TYPES ] = {
+ GLX_STATIC_GRAY, GLX_GRAY_SCALE,
+ GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
+ GLX_TRUE_COLOR, GLX_DIRECT_COLOR
+ };
+
+ return ( (unsigned) visualType < NUM_VISUAL_TYPES )
+ ? glx_visual_types[ visualType ] : GLX_NONE;
+}
+
+
+/**********************************************************************/
+/***** Public Functions *****/
+/**********************************************************************/
+
+
+/*
+ * Create a new X/Mesa visual.
+ * Input: display - X11 display
+ * visinfo - an XVisualInfo pointer
+ * rgb_flag - GL_TRUE = RGB mode,
+ * GL_FALSE = color index mode
+ * alpha_flag - alpha buffer requested?
+ * db_flag - GL_TRUE = double-buffered,
+ * GL_FALSE = single buffered
+ * stereo_flag - stereo visual?
+ * ximage_flag - GL_TRUE = use an XImage for back buffer,
+ * GL_FALSE = use an off-screen pixmap for back buffer
+ * depth_size - requested bits/depth values, or zero
+ * stencil_size - requested bits/stencil values, or zero
+ * accum_red_size - requested bits/red accum values, or zero
+ * accum_green_size - requested bits/green accum values, or zero
+ * accum_blue_size - requested bits/blue accum values, or zero
+ * accum_alpha_size - requested bits/alpha accum values, or zero
+ * num_samples - number of samples/pixel if multisampling, or zero
+ * level - visual level, usually 0
+ * visualCaveat - ala the GLX extension, usually GLX_NONE
+ * Return; a new XMesaVisual or 0 if error.
+ */
+PUBLIC
+XMesaVisual XMesaCreateVisual( Display *display,
+ XVisualInfo * visinfo,
+ GLboolean rgb_flag,
+ GLboolean alpha_flag,
+ GLboolean db_flag,
+ GLboolean stereo_flag,
+ GLboolean ximage_flag,
+ GLint depth_size,
+ GLint stencil_size,
+ GLint accum_red_size,
+ GLint accum_green_size,
+ GLint accum_blue_size,
+ GLint accum_alpha_size,
+ GLint num_samples,
+ GLint level,
+ GLint visualCaveat )
+{
+ XMesaDisplay xmdpy = xmesa_init_display(display);
+ XMesaVisual v;
+ GLint red_bits, green_bits, blue_bits, alpha_bits;
+
+ if (!xmdpy)
+ return NULL;
+
+ if (!rgb_flag)
+ return NULL;
+
+ /* For debugging only */
+ if (getenv("MESA_XSYNC")) {
+ /* This makes debugging X easier.
+ * In your debugger, set a breakpoint on _XError to stop when an
+ * X protocol error is generated.
+ */
+ XSynchronize( display, 1 );
+ }
+
+ v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual);
+ if (!v) {
+ return NULL;
+ }
+
+ v->display = display;
+
+ /* Save a copy of the XVisualInfo struct because the user may Xfree()
+ * the struct but we may need some of the information contained in it
+ * at a later time.
+ */
+ v->visinfo = malloc(sizeof(*visinfo));
+ if (!v->visinfo) {
+ free(v);
+ return NULL;
+ }
+ memcpy(v->visinfo, visinfo, sizeof(*visinfo));
+
+ v->ximage_flag = ximage_flag;
+
+ v->mesa_visual.redMask = visinfo->red_mask;
+ v->mesa_visual.greenMask = visinfo->green_mask;
+ v->mesa_visual.blueMask = visinfo->blue_mask;
+ v->visualID = visinfo->visualid;
+ v->screen = visinfo->screen;
+
+#if !(defined(__cplusplus) || defined(c_plusplus))
+ v->visualType = xmesa_convert_from_x_visual_type(visinfo->class);
+#else
+ v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class);
+#endif
+
+ v->mesa_visual.visualRating = visualCaveat;
+
+ if (alpha_flag)
+ v->mesa_visual.alphaBits = 8;
+
+ (void) initialize_visual_and_buffer( v, NULL, 0, 0 );
+
+ {
+ const int xclass = v->visualType;
+ if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
+ red_bits = util_bitcount(GET_REDMASK(v));
+ green_bits = util_bitcount(GET_GREENMASK(v));
+ blue_bits = util_bitcount(GET_BLUEMASK(v));
+ }
+ else {
+ /* this is an approximation */
+ int depth;
+ depth = v->visinfo->depth;
+ red_bits = depth / 3;
+ depth -= red_bits;
+ green_bits = depth / 2;
+ depth -= green_bits;
+ blue_bits = depth;
+ alpha_bits = 0;
+ assert( red_bits + green_bits + blue_bits == v->visinfo->depth );
+ }
+ alpha_bits = v->mesa_visual.alphaBits;
+ }
+
+ /* initialize visual */
+ {
+ struct gl_config *vis = &v->mesa_visual;
+
+ vis->doubleBufferMode = db_flag;
+ vis->stereoMode = stereo_flag;
+
+ vis->redBits = red_bits;
+ vis->greenBits = green_bits;
+ vis->blueBits = blue_bits;
+ vis->alphaBits = alpha_bits;
+ vis->rgbBits = red_bits + green_bits + blue_bits;
+
+ vis->depthBits = depth_size;
+ vis->stencilBits = stencil_size;
+
+ vis->accumRedBits = accum_red_size;
+ vis->accumGreenBits = accum_green_size;
+ vis->accumBlueBits = accum_blue_size;
+ vis->accumAlphaBits = accum_alpha_size;
+
+ vis->numAuxBuffers = 0;
+ vis->level = 0;
+ vis->sampleBuffers = num_samples > 1;
+ vis->samples = num_samples;
+ }
+
+ v->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK;
+ if (db_flag)
+ v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
+ if (stereo_flag) {
+ v->stvis.buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
+ if (db_flag)
+ v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
+ }
+
+ v->stvis.color_format = choose_pixel_format(v);
+
+ /* Check format support at requested num_samples (for multisample) */
+ if (!xmdpy->screen->is_format_supported(xmdpy->screen,
+ v->stvis.color_format,
+ PIPE_TEXTURE_2D, num_samples,
+ num_samples,
+ PIPE_BIND_RENDER_TARGET))
+ v->stvis.color_format = PIPE_FORMAT_NONE;
+
+ if (v->stvis.color_format == PIPE_FORMAT_NONE) {
+ free(v->visinfo);
+ free(v);
+ return NULL;
+ }
+
+ v->stvis.depth_stencil_format =
+ choose_depth_stencil_format(xmdpy, depth_size, stencil_size,
+ num_samples);
+
+ v->stvis.accum_format = (accum_red_size +
+ accum_green_size + accum_blue_size + accum_alpha_size) ?
+ PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
+
+ v->stvis.samples = num_samples;
+ v->stvis.render_buffer = ST_ATTACHMENT_INVALID;
+
+ /* XXX minor hack */
+ v->mesa_visual.level = level;
+ return v;
+}
+
+
+PUBLIC
+void XMesaDestroyVisual( XMesaVisual v )
+{
+ free(v->visinfo);
+ free(v);
+}
+
+
+/**
+ * Return the informative name.
+ */
+const char *
+xmesa_get_name(void)
+{
+ return stapi->name;
+}
+
+
+/**
+ * Do per-display initializations.
+ */
+int
+xmesa_init( Display *display )
+{
+ return xmesa_init_display(display) ? 0 : 1;
+}
+
+
+/**
+ * Create a new XMesaContext.
+ * \param v the XMesaVisual
+ * \param share_list another XMesaContext with which to share display
+ * lists or NULL if no sharing is wanted.
+ * \return an XMesaContext or NULL if error.
+ */
+PUBLIC
+XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list,
+ GLuint major, GLuint minor,
+ GLuint profileMask, GLuint contextFlags)
+{
+ XMesaDisplay xmdpy = xmesa_init_display(v->display);
+ struct st_context_attribs attribs;
+ enum st_context_error ctx_err = 0;
+ XMesaContext c;
+
+ if (!xmdpy)
+ goto no_xmesa_context;
+
+ /* Note: the XMesaContext contains a Mesa struct gl_context struct (inheritance) */
+ c = (XMesaContext) CALLOC_STRUCT(xmesa_context);
+ if (!c)
+ goto no_xmesa_context;
+
+ c->xm_visual = v;
+ c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */
+ c->xm_read_buffer = NULL;
+
+ memset(&attribs, 0, sizeof(attribs));
+ attribs.visual = v->stvis;
+ attribs.major = major;
+ attribs.minor = minor;
+ if (contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
+ attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
+ if (contextFlags & GLX_CONTEXT_DEBUG_BIT_ARB)
+ attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
+ if (contextFlags & GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB)
+ attribs.flags |= ST_CONTEXT_FLAG_ROBUST_ACCESS;
+
+ switch (profileMask) {
+ case GLX_CONTEXT_CORE_PROFILE_BIT_ARB:
+ /* There are no profiles before OpenGL 3.2. The
+ * GLX_ARB_create_context_profile spec says:
+ *
+ * "If the requested OpenGL version is less than 3.2,
+ * GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
+ * of the context is determined solely by the requested version."
+ */
+ if (major > 3 || (major == 3 && minor >= 2)) {
+ attribs.profile = ST_PROFILE_OPENGL_CORE;
+ break;
+ }
+ /* fall-through */
+ case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
+ /*
+ * The spec also says:
+ *
+ * "If version 3.1 is requested, the context returned may implement
+ * any of the following versions:
+ *
+ * * Version 3.1. The GL_ARB_compatibility extension may or may not
+ * be implemented, as determined by the implementation.
+ * * The core profile of version 3.2 or greater."
+ *
+ * and because Mesa doesn't support GL_ARB_compatibility, the only chance to
+ * honour a 3.1 context is through core profile.
+ */
+ if (major == 3 && minor == 1) {
+ attribs.profile = ST_PROFILE_OPENGL_CORE;
+ } else {
+ attribs.profile = ST_PROFILE_DEFAULT;
+ }
+ break;
+ case GLX_CONTEXT_ES_PROFILE_BIT_EXT:
+ if (major >= 2) {
+ attribs.profile = ST_PROFILE_OPENGL_ES2;
+ } else {
+ attribs.profile = ST_PROFILE_OPENGL_ES1;
+ }
+ break;
+ default:
+ assert(0);
+ goto no_st;
+ }
+
+ c->st = stapi->create_context(stapi, xmdpy->smapi, &attribs,
+ &ctx_err, (share_list) ? share_list->st : NULL);
+ if (c->st == NULL)
+ goto no_st;
+
+ c->st->st_manager_private = (void *) c;
+
+ c->hud = hud_create(c->st->cso_context, NULL);
+
+ return c;
+
+no_st:
+ free(c);
+no_xmesa_context:
+ return NULL;
+}
+
+
+
+PUBLIC
+void XMesaDestroyContext( XMesaContext c )
+{
+ if (c->hud) {
+ hud_destroy(c->hud, NULL);
+ }
+
+ c->st->destroy(c->st);
+
+ /* FIXME: We should destroy the screen here, but if we do so, surfaces may
+ * outlive it, causing segfaults
+ struct pipe_screen *screen = c->st->pipe->screen;
+ screen->destroy(screen);
+ */
+
+ free(c);
+}
+
+
+
+/**
+ * Private function for creating an XMesaBuffer which corresponds to an
+ * X window or pixmap.
+ * \param v the window's XMesaVisual
+ * \param w the window we're wrapping
+ * \return new XMesaBuffer or NULL if error
+ */
+PUBLIC XMesaBuffer
+XMesaCreateWindowBuffer(XMesaVisual v, Window w)
+{
+ XWindowAttributes attr;
+ XMesaBuffer b;
+ Colormap cmap;
+ int depth;
+
+ assert(v);
+ assert(w);
+
+ /* Check that window depth matches visual depth */
+ XGetWindowAttributes( v->display, w, &attr );
+ depth = attr.depth;
+ if (v->visinfo->depth != depth) {
+ _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n",
+ v->visinfo->depth, depth);
+ return NULL;
+ }
+
+ /* Find colormap */
+ if (attr.colormap) {
+ cmap = attr.colormap;
+ }
+ else {
+ _mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w);
+ /* this is weird, a window w/out a colormap!? */
+ /* OK, let's just allocate a new one and hope for the best */
+ cmap = XCreateColormap(v->display, w, attr.visual, AllocNone);
+ }
+
+ b = create_xmesa_buffer((Drawable) w, WINDOW, v, cmap);
+ if (!b)
+ return NULL;
+
+ if (!initialize_visual_and_buffer( v, b, (Drawable) w, cmap )) {
+ xmesa_free_buffer(b);
+ return NULL;
+ }
+
+ return b;
+}
+
+
+
+/**
+ * Create a new XMesaBuffer from an X pixmap.
+ *
+ * \param v the XMesaVisual
+ * \param p the pixmap
+ * \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or
+ * \c GLX_DIRECT_COLOR visual for the pixmap
+ * \returns new XMesaBuffer or NULL if error
+ */
+PUBLIC XMesaBuffer
+XMesaCreatePixmapBuffer(XMesaVisual v, Pixmap p, Colormap cmap)
+{
+ XMesaBuffer b;
+
+ assert(v);
+
+ b = create_xmesa_buffer((Drawable) p, PIXMAP, v, cmap);
+ if (!b)
+ return NULL;
+
+ if (!initialize_visual_and_buffer(v, b, (Drawable) p, cmap)) {
+ xmesa_free_buffer(b);
+ return NULL;
+ }
+
+ return b;
+}
+
+
+/**
+ * For GLX_EXT_texture_from_pixmap
+ */
+XMesaBuffer
+XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p,
+ Colormap cmap,
+ int format, int target, int mipmap)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ XMesaBuffer b;
+
+ assert(v);
+
+ b = create_xmesa_buffer((Drawable) p, PIXMAP, v, cmap);
+ if (!b)
+ return NULL;
+
+ /* get pixmap size */
+ xmesa_get_window_size(v->display, b, &b->width, &b->height);
+
+ if (target == 0) {
+ /* examine dims */
+ if (ctx->Extensions.ARB_texture_non_power_of_two) {
+ target = GLX_TEXTURE_2D_EXT;
+ }
+ else if ( util_bitcount(b->width) == 1
+ && util_bitcount(b->height) == 1) {
+ /* power of two size */
+ if (b->height == 1) {
+ target = GLX_TEXTURE_1D_EXT;
+ }
+ else {
+ target = GLX_TEXTURE_2D_EXT;
+ }
+ }
+ else if (ctx->Extensions.NV_texture_rectangle) {
+ target = GLX_TEXTURE_RECTANGLE_EXT;
+ }
+ else {
+ /* non power of two textures not supported */
+ XMesaDestroyBuffer(b);
+ return 0;
+ }
+ }
+
+ b->TextureTarget = target;
+ b->TextureFormat = format;
+ b->TextureMipmap = mipmap;
+
+ if (!initialize_visual_and_buffer(v, b, (Drawable) p, cmap)) {
+ xmesa_free_buffer(b);
+ return NULL;
+ }
+
+ return b;
+}
+
+
+
+XMesaBuffer
+XMesaCreatePBuffer(XMesaVisual v, Colormap cmap,
+ unsigned int width, unsigned int height)
+{
+ Window root;
+ Drawable drawable; /* X Pixmap Drawable */
+ XMesaBuffer b;
+
+ /* allocate pixmap for front buffer */
+ root = RootWindow( v->display, v->visinfo->screen );
+ drawable = XCreatePixmap(v->display, root, width, height,
+ v->visinfo->depth);
+ if (!drawable)
+ return NULL;
+
+ b = create_xmesa_buffer(drawable, PBUFFER, v, cmap);
+ if (!b)
+ return NULL;
+
+ if (!initialize_visual_and_buffer(v, b, drawable, cmap)) {
+ xmesa_free_buffer(b);
+ return NULL;
+ }
+
+ return b;
+}
+
+
+
+/*
+ * Deallocate an XMesaBuffer structure and all related info.
+ */
+PUBLIC void
+XMesaDestroyBuffer(XMesaBuffer b)
+{
+ xmesa_free_buffer(b);
+}
+
+
+/**
+ * Notify the binding context to validate the buffer.
+ */
+void
+xmesa_notify_invalid_buffer(XMesaBuffer b)
+{
+ p_atomic_inc(&b->stfb->stamp);
+}
+
+
+/**
+ * Query the current drawable size and notify the binding context.
+ */
+void
+xmesa_check_buffer_size(XMesaBuffer b)
+{
+ GLuint old_width, old_height;
+
+ if (!b)
+ return;
+
+ if (b->type == PBUFFER)
+ return;
+
+ old_width = b->width;
+ old_height = b->height;
+
+ xmesa_get_window_size(b->xm_visual->display, b, &b->width, &b->height);
+
+ if (b->width != old_width || b->height != old_height)
+ xmesa_notify_invalid_buffer(b);
+}
+
+
+/*
+ * Bind buffer b to context c and make c the current rendering context.
+ */
+PUBLIC
+GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
+ XMesaBuffer readBuffer )
+{
+ XMesaContext old_ctx = XMesaGetCurrentContext();
+
+ if (old_ctx && old_ctx != c) {
+ XMesaFlush(old_ctx);
+ old_ctx->xm_buffer = NULL;
+ old_ctx->xm_read_buffer = NULL;
+ }
+
+ if (c) {
+ if (!drawBuffer != !readBuffer) {
+ return GL_FALSE; /* must specify zero or two buffers! */
+ }
+
+ if (c == old_ctx &&
+ c->xm_buffer == drawBuffer &&
+ c->xm_read_buffer == readBuffer)
+ return GL_TRUE;
+
+ xmesa_check_buffer_size(drawBuffer);
+ if (readBuffer != drawBuffer)
+ xmesa_check_buffer_size(readBuffer);
+
+ c->xm_buffer = drawBuffer;
+ c->xm_read_buffer = readBuffer;
+
+ stapi->make_current(stapi, c->st,
+ drawBuffer ? drawBuffer->stfb : NULL,
+ readBuffer ? readBuffer->stfb : NULL);
+
+ /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */
+ if (drawBuffer)
+ drawBuffer->wasCurrent = GL_TRUE;
+ }
+ else {
+ /* Detach */
+ stapi->make_current(stapi, NULL, NULL, NULL);
+
+ }
+ return GL_TRUE;
+}
+
+
+/*
+ * Unbind the context c from its buffer.
+ */
+GLboolean XMesaUnbindContext( XMesaContext c )
+{
+ /* A no-op for XFree86 integration purposes */
+ return GL_TRUE;
+}
+
+
+XMesaContext XMesaGetCurrentContext( void )
+{
+ struct st_context_iface *st = stapi->get_current(stapi);
+ return (XMesaContext) (st) ? st->st_manager_private : NULL;
+}
+
+
+
+/**
+ * Swap front and back color buffers and have winsys display front buffer.
+ * If there's no front color buffer no swap actually occurs.
+ */
+PUBLIC
+void XMesaSwapBuffers( XMesaBuffer b )
+{
+ XMesaContext xmctx = XMesaGetCurrentContext();
+
+ /* Need to draw HUD before flushing */
+ if (xmctx && xmctx->hud) {
+ struct pipe_resource *back =
+ xmesa_get_framebuffer_resource(b->stfb, ST_ATTACHMENT_BACK_LEFT);
+ hud_run(xmctx->hud, NULL, back);
+ }
+
+ if (xmctx && xmctx->xm_buffer == b) {
+ xmctx->st->flush( xmctx->st, ST_FLUSH_FRONT, NULL, NULL, NULL);
+ }
+
+ xmesa_swap_st_framebuffer(b->stfb);
+}
+
+
+
+/*
+ * Copy sub-region of back buffer to front buffer
+ */
+void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height )
+{
+ XMesaContext xmctx = XMesaGetCurrentContext();
+
+ xmctx->st->flush( xmctx->st, ST_FLUSH_FRONT, NULL, NULL, NULL);
+
+ xmesa_copy_st_framebuffer(b->stfb,
+ ST_ATTACHMENT_BACK_LEFT, ST_ATTACHMENT_FRONT_LEFT,
+ x, b->height - y - height, width, height);
+}
+
+
+
+void XMesaFlush( XMesaContext c )
+{
+ if (c && c->xm_visual->display) {
+ XMesaDisplay xmdpy = xmesa_init_display(c->xm_visual->display);
+ struct pipe_fence_handle *fence = NULL;
+
+ c->st->flush(c->st, ST_FLUSH_FRONT, &fence, NULL, NULL);
+ if (fence) {
+ xmdpy->screen->fence_finish(xmdpy->screen, NULL, fence,
+ PIPE_TIMEOUT_INFINITE);
+ xmdpy->screen->fence_reference(xmdpy->screen, &fence, NULL);
+ }
+ XFlush( c->xm_visual->display );
+ }
+}
+
+
+
+
+
+XMesaBuffer XMesaFindBuffer( Display *dpy, Drawable d )
+{
+ XMesaBuffer b;
+ for (b = XMesaBufferList; b; b = b->Next) {
+ if (b->ws.drawable == d && b->xm_visual->display == dpy) {
+ return b;
+ }
+ }
+ return NULL;
+}
+
+
+/**
+ * Free/destroy all XMesaBuffers associated with given display.
+ */
+void xmesa_destroy_buffers_on_display(Display *dpy)
+{
+ XMesaBuffer b, next;
+ for (b = XMesaBufferList; b; b = next) {
+ next = b->Next;
+ if (b->xm_visual->display == dpy) {
+ xmesa_free_buffer(b);
+ /* delete head of list? */
+ if (XMesaBufferList == b) {
+ XMesaBufferList = next;
+ }
+ }
+ }
+}
+
+
+/*
+ * Look for XMesaBuffers whose X window has been destroyed.
+ * Deallocate any such XMesaBuffers.
+ */
+void XMesaGarbageCollect( void )
+{
+ XMesaBuffer b, next;
+ for (b=XMesaBufferList; b; b=next) {
+ next = b->Next;
+ if (b->xm_visual &&
+ b->xm_visual->display &&
+ b->ws.drawable &&
+ b->type == WINDOW) {
+ XSync(b->xm_visual->display, False);
+ if (!window_exists( b->xm_visual->display, b->ws.drawable )) {
+ /* found a dead window, free the ancillary info */
+ XMesaDestroyBuffer( b );
+ }
+ }
+ }
+}
+
+
+static enum st_attachment_type xmesa_attachment_type(int glx_attachment)
+{
+ switch(glx_attachment) {
+ case GLX_FRONT_LEFT_EXT:
+ return ST_ATTACHMENT_FRONT_LEFT;
+ case GLX_FRONT_RIGHT_EXT:
+ return ST_ATTACHMENT_FRONT_RIGHT;
+ case GLX_BACK_LEFT_EXT:
+ return ST_ATTACHMENT_BACK_LEFT;
+ case GLX_BACK_RIGHT_EXT:
+ return ST_ATTACHMENT_BACK_RIGHT;
+ default:
+ assert(0);
+ return ST_ATTACHMENT_FRONT_LEFT;
+ }
+}
+
+
+PUBLIC void
+XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
+ const int *attrib_list)
+{
+ struct st_context_iface *st = stapi->get_current(stapi);
+ struct st_framebuffer_iface* stfbi = drawable->stfb;
+ struct pipe_resource *res;
+ int x, y, w, h;
+ enum st_attachment_type st_attachment = xmesa_attachment_type(buffer);
+
+ x = 0;
+ y = 0;
+ w = drawable->width;
+ h = drawable->height;
+
+ /* We need to validate our attachments before using them,
+ * in case the texture doesn't exist yet. */
+ xmesa_st_framebuffer_validate_textures(stfbi, w, h, 1 << st_attachment);
+ res = xmesa_get_attachment(stfbi, st_attachment);
+
+ if (res) {
+ struct pipe_context* pipe = xmesa_get_context(stfbi);
+ enum pipe_format internal_format = res->format;
+ struct pipe_transfer *tex_xfer;
+ char *map;
+ int line, byte_width;
+ XImage *img;
+
+ internal_format = choose_pixel_format(drawable->xm_visual);
+
+ map = pipe_transfer_map(pipe, res,
+ 0, 0, /* level, layer */
+ PIPE_TRANSFER_WRITE,
+ x, y,
+ w, h, &tex_xfer);
+ if (!map)
+ return;
+
+ /* Grab the XImage that we want to turn into a texture. */
+ img = XGetImage(dpy,
+ drawable->ws.drawable,
+ x, y,
+ w, h,
+ AllPlanes,
+ ZPixmap);
+
+ if (!img) {
+ pipe_transfer_unmap(pipe, tex_xfer);
+ return;
+ }
+
+ /* The pipe transfer has a pitch rounded up to the nearest 64 pixels. */
+ byte_width = w * ((img->bits_per_pixel + 7) / 8);
+
+ for (line = 0; line < h; line++)
+ memcpy(&map[line * tex_xfer->stride],
+ &img->data[line * img->bytes_per_line],
+ byte_width);
+
+ pipe_transfer_unmap(pipe, tex_xfer);
+
+ st->teximage(st,
+ ST_TEXTURE_2D,
+ 0, /* level */
+ internal_format,
+ res,
+ FALSE /* no mipmap */);
+
+ }
+}
+
+
+
+PUBLIC void
+XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer)
+{
+}
+
+
+void
+XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask)
+{
+ if (dst->st->copy)
+ dst->st->copy(dst->st, src->st, mask);
+}
diff --git a/src/gallium/frontends/glx/xlib/xm_api.h b/src/gallium/frontends/glx/xlib/xm_api.h
new file mode 100644
index 00000000000..04eefda0b07
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/xm_api.h
@@ -0,0 +1,398 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+
+/* Sample Usage:
+
+In addition to the usual X calls to select a visual, create a colormap
+and create a window, you must do the following to use the X/Mesa interface:
+
+1. Call XMesaCreateVisual() to make an XMesaVisual from an XVisualInfo.
+
+2. Call XMesaCreateContext() to create an X/Mesa rendering context, given
+ the XMesaVisual.
+
+3. Call XMesaCreateWindowBuffer() to create an XMesaBuffer from an X window
+ and XMesaVisual.
+
+4. Call XMesaMakeCurrent() to bind the XMesaBuffer to an XMesaContext and
+ to make the context the current one.
+
+5. Make gl* calls to render your graphics.
+
+6. Use XMesaSwapBuffers() when double buffering to swap front/back buffers.
+
+7. Before the X window is destroyed, call XMesaDestroyBuffer().
+
+8. Before exiting, call XMesaDestroyVisual and XMesaDestroyContext.
+
+*/
+
+
+
+
+#ifndef XM_API_H
+#define XM_API_H
+
+
+#include "main/mtypes.h" /* for gl_config */
+#include "frontend/api.h"
+#include "os/os_thread.h"
+
+#include "frontend/xlibsw_api.h"
+
+# include <X11/Xlib.h>
+# include <X11/Xlibint.h>
+# include <X11/Xutil.h>
+
+struct hud_context;
+
+typedef struct xmesa_display *XMesaDisplay;
+typedef struct xmesa_buffer *XMesaBuffer;
+typedef struct xmesa_context *XMesaContext;
+typedef struct xmesa_visual *XMesaVisual;
+
+
+struct xmesa_display {
+ mtx_t mutex;
+
+ Display *display;
+ struct pipe_screen *screen;
+ struct st_manager *smapi;
+
+ struct pipe_context *pipe;
+};
+
+
+/*
+ * Create a new X/Mesa visual.
+ * Input: display - X11 display
+ * visinfo - an XVisualInfo pointer
+ * rgb_flag - GL_TRUE = RGB mode,
+ * GL_FALSE = color index mode
+ * alpha_flag - alpha buffer requested?
+ * db_flag - GL_TRUE = double-buffered,
+ * GL_FALSE = single buffered
+ * stereo_flag - stereo visual?
+ * ximage_flag - GL_TRUE = use an XImage for back buffer,
+ * GL_FALSE = use an off-screen pixmap for back buffer
+ * depth_size - requested bits/depth values, or zero
+ * stencil_size - requested bits/stencil values, or zero
+ * accum_red_size - requested bits/red accum values, or zero
+ * accum_green_size - requested bits/green accum values, or zero
+ * accum_blue_size - requested bits/blue accum values, or zero
+ * accum_alpha_size - requested bits/alpha accum values, or zero
+ * num_samples - number of samples/pixel if multisampling, or zero
+ * level - visual level, usually 0
+ * visualCaveat - ala the GLX extension, usually GLX_NONE_EXT
+ * Return; a new XMesaVisual or 0 if error.
+ */
+extern XMesaVisual XMesaCreateVisual( Display *display,
+ XVisualInfo * visinfo,
+ GLboolean rgb_flag,
+ GLboolean alpha_flag,
+ GLboolean db_flag,
+ GLboolean stereo_flag,
+ GLboolean ximage_flag,
+ GLint depth_size,
+ GLint stencil_size,
+ GLint accum_red_size,
+ GLint accum_green_size,
+ GLint accum_blue_size,
+ GLint accum_alpha_size,
+ GLint num_samples,
+ GLint level,
+ GLint visualCaveat );
+
+/*
+ * Destroy an XMesaVisual, but not the associated XVisualInfo.
+ */
+extern void XMesaDestroyVisual( XMesaVisual v );
+
+
+
+/*
+ * Create a new XMesaContext for rendering into an X11 window.
+ *
+ * Input: visual - an XMesaVisual
+ * share_list - another XMesaContext with which to share display
+ * lists or NULL if no sharing is wanted.
+ * Return: an XMesaContext or NULL if error.
+ */
+extern XMesaContext XMesaCreateContext( XMesaVisual v,
+ XMesaContext share_list,
+ GLuint major, GLuint minor,
+ GLuint profileMask,
+ GLuint contextFlags);
+
+
+/*
+ * Destroy a rendering context as returned by XMesaCreateContext()
+ */
+extern void XMesaDestroyContext( XMesaContext c );
+
+
+
+/*
+ * Create an XMesaBuffer from an X window.
+ */
+extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, Window w );
+
+
+/*
+ * Create an XMesaBuffer from an X pixmap.
+ */
+extern XMesaBuffer XMesaCreatePixmapBuffer( XMesaVisual v,
+ Pixmap p,
+ Colormap cmap );
+
+
+/*
+ * Destroy an XMesaBuffer, but not the corresponding window or pixmap.
+ */
+extern void XMesaDestroyBuffer( XMesaBuffer b );
+
+
+/*
+ * Return the XMesaBuffer handle which corresponds to an X drawable, if any.
+ *
+ * New in Mesa 2.3.
+ */
+extern XMesaBuffer XMesaFindBuffer( Display *dpy,
+ Drawable d );
+
+
+
+/*
+ * Bind two buffers (read and draw) to a context and make the
+ * context the current one.
+ * New in Mesa 3.3
+ */
+extern GLboolean XMesaMakeCurrent2( XMesaContext c,
+ XMesaBuffer drawBuffer,
+ XMesaBuffer readBuffer );
+
+
+/*
+ * Unbind the current context from its buffer.
+ */
+extern GLboolean XMesaUnbindContext( XMesaContext c );
+
+
+/*
+ * Return a handle to the current context.
+ */
+extern XMesaContext XMesaGetCurrentContext( void );
+
+
+/*
+ * Swap the front and back buffers for the given buffer. No action is
+ * taken if the buffer is not double buffered.
+ */
+extern void XMesaSwapBuffers( XMesaBuffer b );
+
+
+/*
+ * Copy a sub-region of the back buffer to the front buffer.
+ *
+ * New in Mesa 2.6
+ */
+extern void XMesaCopySubBuffer( XMesaBuffer b,
+ int x,
+ int y,
+ int width,
+ int height );
+
+
+
+
+
+/*
+ * Flush/sync a context
+ */
+extern void XMesaFlush( XMesaContext c );
+
+
+
+/*
+ * Scan for XMesaBuffers whose window/pixmap has been destroyed, then free
+ * any memory used by that buffer.
+ *
+ * New in Mesa 2.3.
+ */
+extern void XMesaGarbageCollect( void );
+
+
+
+/*
+ * Create a pbuffer.
+ * New in Mesa 4.1
+ */
+extern XMesaBuffer XMesaCreatePBuffer(XMesaVisual v, Colormap cmap,
+ unsigned int width, unsigned int height);
+
+
+
+/*
+ * Texture from Pixmap
+ * New in Mesa 7.1
+ */
+extern void
+XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
+ const int *attrib_list);
+
+extern void
+XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer);
+
+
+extern XMesaBuffer
+XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p,
+ Colormap cmap,
+ int format, int target, int mipmap);
+
+
+extern void
+XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask);
+
+
+/***********************************************************************
+ */
+
+/**
+ * Visual inforation, derived from GLvisual.
+ * Basically corresponds to an XVisualInfo.
+ */
+struct xmesa_visual {
+ struct gl_config mesa_visual;/* Device independent visual parameters */
+ int screen, visualID, visualType;
+ Display *display; /* The X11 display */
+ XVisualInfo * visinfo; /* X's visual info (pointer to private copy) */
+ XVisualInfo *vishandle; /* Only used in fakeglx.c */
+ GLint BitsPerPixel; /* True bits per pixel for XImages */
+
+ GLboolean ximage_flag; /* Use XImage for back buffer (not pixmap)? */
+
+ struct st_visual stvis;
+};
+
+
+/**
+ * Context info, derived from st_context.
+ * Basically corresponds to a GLXContext.
+ */
+struct xmesa_context {
+ struct st_context_iface *st;
+ XMesaVisual xm_visual; /** pixel format info */
+ XMesaBuffer xm_buffer; /** current drawbuffer */
+ XMesaBuffer xm_read_buffer; /** current readbuffer */
+ struct hud_context *hud;
+};
+
+
+/**
+ * Types of X/GLX drawables we might render into.
+ */
+typedef enum {
+ WINDOW, /* An X window */
+ GLXWINDOW, /* GLX window */
+ PIXMAP, /* GLX pixmap */
+ PBUFFER /* GLX Pbuffer */
+} BufferType;
+
+
+/**
+ * Framebuffer information, derived from.
+ * Basically corresponds to a GLXDrawable.
+ */
+struct xmesa_buffer {
+ struct st_framebuffer_iface *stfb;
+ struct xlib_drawable ws;
+
+ GLboolean wasCurrent; /* was ever the current buffer? */
+ XMesaVisual xm_visual; /* the X/Mesa visual */
+ Colormap cmap; /* the X colormap */
+ BufferType type; /* window, pixmap, pbuffer or glxwindow */
+
+ GLboolean largestPbuffer; /**< for pbuffers */
+ GLboolean preservedContents; /**< for pbuffers */
+
+ XImage *tempImage;
+ unsigned long selectedEvents;/* for pbuffers only */
+
+
+ GC gc; /* scratch GC for span, line, tri drawing */
+
+ /* GLX_EXT_texture_from_pixmap */
+ GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
+ GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
+ GLint TextureMipmap; /** 0 or 1 */
+
+ struct xmesa_buffer *Next; /* Linked list pointer: */
+
+ unsigned width, height;
+};
+
+
+
+extern const char *
+xmesa_get_name(void);
+
+extern int
+xmesa_init(Display *dpy);
+
+extern XMesaBuffer
+xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis);
+
+extern void
+xmesa_get_window_size(Display *dpy, XMesaBuffer b,
+ GLuint *width, GLuint *height);
+
+extern void
+xmesa_notify_invalid_buffer(XMesaBuffer b);
+
+extern void
+xmesa_check_buffer_size(XMesaBuffer b);
+
+extern void
+xmesa_destroy_buffers_on_display(Display *dpy);
+
+extern void
+xmesa_close_display(Display *dpy);
+
+static inline GLuint
+xmesa_buffer_width(XMesaBuffer b)
+{
+ return b->width;
+}
+
+static inline GLuint
+xmesa_buffer_height(XMesaBuffer b)
+{
+ return b->height;
+}
+
+extern boolean xmesa_strict_invalidate;
+
+#endif
diff --git a/src/gallium/frontends/glx/xlib/xm_public.h b/src/gallium/frontends/glx/xlib/xm_public.h
new file mode 100644
index 00000000000..9afc5f5d7cf
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/xm_public.h
@@ -0,0 +1,48 @@
+
+/**************************************************************************
+ *
+ * Copyright 2006 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef XM_PUBLIC_H
+#define XM_PUBLIC_H
+
+#include <X11/Xlib.h>
+
+struct pipe_screen;
+struct st_api;
+
+/* This is the driver interface required by the glx/xlib state tracker.
+ */
+struct xm_driver {
+ struct pipe_screen *(*create_pipe_screen)( Display *display );
+ struct st_api *(*create_st_api)( void );
+};
+
+extern void
+xmesa_set_driver( const struct xm_driver *driver );
+
+
+#endif /* XM_PUBLIC_H */
diff --git a/src/gallium/frontends/glx/xlib/xm_st.c b/src/gallium/frontends/glx/xlib/xm_st.c
new file mode 100644
index 00000000000..4fe7b57f24c
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/xm_st.c
@@ -0,0 +1,411 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <[email protected]>
+ */
+
+#include "xm_api.h"
+#include "xm_st.h"
+
+#include "util/u_inlines.h"
+#include "util/u_atomic.h"
+#include "util/u_memory.h"
+
+struct xmesa_st_framebuffer {
+ XMesaDisplay display;
+ XMesaBuffer buffer;
+ struct pipe_screen *screen;
+
+ struct st_visual stvis;
+ enum pipe_texture_target target;
+
+ unsigned texture_width, texture_height, texture_mask;
+ struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
+
+ struct pipe_resource *display_resource;
+};
+
+
+static inline struct xmesa_st_framebuffer *
+xmesa_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ return (struct xmesa_st_framebuffer *) stfbi->st_manager_private;
+}
+
+
+/**
+ * Display (present) an attachment to the xlib_drawable of the framebuffer.
+ */
+static bool
+xmesa_st_framebuffer_display(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type statt)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ struct pipe_resource *ptex = xstfb->textures[statt];
+ struct pipe_resource *pres;
+
+ if (!ptex)
+ return true;
+
+ pres = xstfb->display_resource;
+ /* (re)allocate the surface for the texture to be displayed */
+ if (!pres || pres != ptex) {
+ pipe_resource_reference(&xstfb->display_resource, ptex);
+ pres = xstfb->display_resource;
+ }
+
+ xstfb->screen->flush_frontbuffer(xstfb->screen, pres, 0, 0, &xstfb->buffer->ws, NULL);
+ return true;
+}
+
+
+/**
+ * Copy the contents between the attachments.
+ */
+static void
+xmesa_st_framebuffer_copy_textures(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type src_statt,
+ enum st_attachment_type dst_statt,
+ unsigned x, unsigned y,
+ unsigned width, unsigned height)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ struct pipe_resource *src_ptex = xstfb->textures[src_statt];
+ struct pipe_resource *dst_ptex = xstfb->textures[dst_statt];
+ struct pipe_box src_box;
+ struct pipe_context *pipe;
+
+ if (!src_ptex || !dst_ptex)
+ return;
+
+ pipe = xmesa_get_context(stfbi);
+
+ u_box_2d(x, y, width, height, &src_box);
+
+ if (src_ptex && dst_ptex)
+ pipe->resource_copy_region(pipe, dst_ptex, 0, x, y, 0,
+ src_ptex, 0, &src_box);
+}
+
+
+/**
+ * Remove outdated textures and create the requested ones.
+ * This is a helper used during framebuffer validation.
+ */
+bool
+xmesa_st_framebuffer_validate_textures(struct st_framebuffer_iface *stfbi,
+ unsigned width, unsigned height,
+ unsigned mask)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ struct pipe_resource templ;
+ enum st_attachment_type i;
+
+ /* remove outdated textures */
+ if (xstfb->texture_width != width || xstfb->texture_height != height) {
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+ pipe_resource_reference(&xstfb->textures[i], NULL);
+ }
+
+ memset(&templ, 0, sizeof(templ));
+ templ.target = xstfb->target;
+ templ.width0 = width;
+ templ.height0 = height;
+ templ.depth0 = 1;
+ templ.array_size = 1;
+ templ.last_level = 0;
+ templ.nr_samples = xstfb->stvis.samples;
+ templ.nr_storage_samples = xstfb->stvis.samples;
+
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+ enum pipe_format format;
+ unsigned bind;
+
+ /* the texture already exists or not requested */
+ if (xstfb->textures[i] || !(mask & (1 << i))) {
+ /* remember the texture */
+ if (xstfb->textures[i])
+ mask |= (1 << i);
+ continue;
+ }
+
+ switch (i) {
+ case ST_ATTACHMENT_FRONT_LEFT:
+ case ST_ATTACHMENT_BACK_LEFT:
+ case ST_ATTACHMENT_FRONT_RIGHT:
+ case ST_ATTACHMENT_BACK_RIGHT:
+ format = xstfb->stvis.color_format;
+ bind = PIPE_BIND_DISPLAY_TARGET |
+ PIPE_BIND_RENDER_TARGET;
+ break;
+ case ST_ATTACHMENT_DEPTH_STENCIL:
+ format = xstfb->stvis.depth_stencil_format;
+ bind = PIPE_BIND_DEPTH_STENCIL;
+ break;
+ default:
+ format = PIPE_FORMAT_NONE;
+ break;
+ }
+
+ if (format != PIPE_FORMAT_NONE) {
+ templ.format = format;
+ templ.bind = bind;
+
+ xstfb->textures[i] =
+ xstfb->screen->resource_create(xstfb->screen, &templ);
+ if (!xstfb->textures[i])
+ return FALSE;
+ }
+ }
+
+ xstfb->texture_width = width;
+ xstfb->texture_height = height;
+ xstfb->texture_mask = mask;
+
+ return true;
+}
+
+
+/**
+ * Check that a framebuffer's attachments match the window's size.
+ *
+ * Called via st_framebuffer_iface::validate()
+ *
+ * \param statts array of framebuffer attachments
+ * \param count number of framebuffer attachments in statts[]
+ * \param out returns resources for each of the attachments
+ */
+static bool
+xmesa_st_framebuffer_validate(struct st_context_iface *stctx,
+ struct st_framebuffer_iface *stfbi,
+ const enum st_attachment_type *statts,
+ unsigned count,
+ struct pipe_resource **out)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ unsigned statt_mask, new_mask, i;
+ bool resized;
+ bool ret;
+
+ /* build mask of ST_ATTACHMENT bits */
+ statt_mask = 0x0;
+ for (i = 0; i < count; i++)
+ statt_mask |= 1 << statts[i];
+
+ /* record newly allocated textures */
+ new_mask = statt_mask & ~xstfb->texture_mask;
+
+ /* If xmesa_strict_invalidate is not set, we will not yet have
+ * called XGetGeometry(). Do so here:
+ */
+ if (!xmesa_strict_invalidate)
+ xmesa_check_buffer_size(xstfb->buffer);
+
+ resized = (xstfb->buffer->width != xstfb->texture_width ||
+ xstfb->buffer->height != xstfb->texture_height);
+
+ /* revalidate textures */
+ if (resized || new_mask) {
+ ret = xmesa_st_framebuffer_validate_textures(stfbi,
+ xstfb->buffer->width, xstfb->buffer->height, statt_mask);
+ if (!ret)
+ return ret;
+
+ if (!resized) {
+ enum st_attachment_type back, front;
+
+ back = ST_ATTACHMENT_BACK_LEFT;
+ front = ST_ATTACHMENT_FRONT_LEFT;
+ /* copy the contents if front is newly allocated and back is not */
+ if ((statt_mask & (1 << back)) &&
+ (new_mask & (1 << front)) &&
+ !(new_mask & (1 << back))) {
+ xmesa_st_framebuffer_copy_textures(stfbi, back, front,
+ 0, 0, xstfb->texture_width, xstfb->texture_height);
+ }
+ }
+ }
+
+ for (i = 0; i < count; i++)
+ pipe_resource_reference(&out[i], xstfb->textures[statts[i]]);
+
+ return true;
+}
+
+
+/**
+ * Called via st_framebuffer_iface::flush_front()
+ */
+static bool
+xmesa_st_framebuffer_flush_front(struct st_context_iface *stctx,
+ struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type statt)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ bool ret;
+
+ ret = xmesa_st_framebuffer_display(stfbi, statt);
+
+ if (ret && xmesa_strict_invalidate)
+ xmesa_check_buffer_size(xstfb->buffer);
+
+ return ret;
+}
+
+static uint32_t xmesa_stfbi_ID = 0;
+
+struct st_framebuffer_iface *
+xmesa_create_st_framebuffer(XMesaDisplay xmdpy, XMesaBuffer b)
+{
+ struct st_framebuffer_iface *stfbi;
+ struct xmesa_st_framebuffer *xstfb;
+
+ assert(xmdpy->display == b->xm_visual->display);
+
+ stfbi = CALLOC_STRUCT(st_framebuffer_iface);
+ xstfb = CALLOC_STRUCT(xmesa_st_framebuffer);
+ if (!stfbi || !xstfb) {
+ free(stfbi);
+ free(xstfb);
+ return NULL;
+ }
+
+ xstfb->display = xmdpy;
+ xstfb->buffer = b;
+ xstfb->screen = xmdpy->screen;
+ xstfb->stvis = b->xm_visual->stvis;
+ if (xstfb->screen->get_param(xstfb->screen, PIPE_CAP_NPOT_TEXTURES))
+ xstfb->target = PIPE_TEXTURE_2D;
+ else
+ xstfb->target = PIPE_TEXTURE_RECT;
+
+ stfbi->visual = &xstfb->stvis;
+ stfbi->flush_front = xmesa_st_framebuffer_flush_front;
+ stfbi->validate = xmesa_st_framebuffer_validate;
+ stfbi->ID = p_atomic_inc_return(&xmesa_stfbi_ID);
+ stfbi->state_manager = xmdpy->smapi;
+ p_atomic_set(&stfbi->stamp, 1);
+ stfbi->st_manager_private = (void *) xstfb;
+
+ return stfbi;
+}
+
+
+void
+xmesa_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ int i;
+
+ pipe_resource_reference(&xstfb->display_resource, NULL);
+
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
+ pipe_resource_reference(&xstfb->textures[i], NULL);
+
+ free(xstfb);
+ free(stfbi);
+}
+
+
+/**
+ * Return the pipe_surface which corresponds to the given
+ * framebuffer attachment.
+ */
+struct pipe_resource *
+xmesa_get_framebuffer_resource(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type att)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ return xstfb->textures[att];
+}
+
+
+void
+xmesa_swap_st_framebuffer(struct st_framebuffer_iface *stfbi)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ bool ret;
+
+ ret = xmesa_st_framebuffer_display(stfbi, ST_ATTACHMENT_BACK_LEFT);
+ if (ret) {
+ struct pipe_resource **front, **back, *tmp;
+
+ front = &xstfb->textures[ST_ATTACHMENT_FRONT_LEFT];
+ back = &xstfb->textures[ST_ATTACHMENT_BACK_LEFT];
+ /* swap textures only if the front texture has been allocated */
+ if (*front) {
+ tmp = *front;
+ *front = *back;
+ *back = tmp;
+
+ /* the current context should validate the buffer after swapping */
+ if (!xmesa_strict_invalidate)
+ xmesa_notify_invalid_buffer(xstfb->buffer);
+ }
+
+ if (xmesa_strict_invalidate)
+ xmesa_check_buffer_size(xstfb->buffer);
+ }
+}
+
+
+void
+xmesa_copy_st_framebuffer(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type src,
+ enum st_attachment_type dst,
+ int x, int y, int w, int h)
+{
+ xmesa_st_framebuffer_copy_textures(stfbi, src, dst, x, y, w, h);
+ if (dst == ST_ATTACHMENT_FRONT_LEFT)
+ xmesa_st_framebuffer_display(stfbi, dst);
+}
+
+
+struct pipe_resource*
+xmesa_get_attachment(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type st_attachment)
+{
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+ struct pipe_resource *res;
+
+ res = xstfb->textures[st_attachment];
+ return res;
+}
+
+
+struct pipe_context*
+xmesa_get_context(struct st_framebuffer_iface *stfbi)
+{
+ struct pipe_context *pipe;
+ struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
+
+ pipe = xstfb->display->pipe;
+ if (!pipe) {
+ pipe = xstfb->screen->context_create(xstfb->screen, NULL, 0);
+ if (!pipe)
+ return NULL;
+ xstfb->display->pipe = pipe;
+ }
+ return pipe;
+}
diff --git a/src/gallium/frontends/glx/xlib/xm_st.h b/src/gallium/frontends/glx/xlib/xm_st.h
new file mode 100644
index 00000000000..6d92a38e0dd
--- /dev/null
+++ b/src/gallium/frontends/glx/xlib/xm_st.h
@@ -0,0 +1,66 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Chia-I Wu <[email protected]>
+ */
+
+#ifndef _XM_ST_H_
+#define _XM_ST_H_
+
+#include "pipe/p_compiler.h"
+#include "frontend/api.h"
+
+#include "xm_api.h"
+
+struct st_framebuffer_iface *
+xmesa_create_st_framebuffer(XMesaDisplay xmdpy, XMesaBuffer b);
+
+void
+xmesa_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi);
+
+struct pipe_resource *
+xmesa_get_framebuffer_resource(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type att);
+
+void
+xmesa_swap_st_framebuffer(struct st_framebuffer_iface *stfbi);
+
+void
+xmesa_copy_st_framebuffer(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type src,
+ enum st_attachment_type dst,
+ int x, int y, int w, int h);
+
+struct pipe_resource*
+xmesa_get_attachment(struct st_framebuffer_iface *stfbi,
+ enum st_attachment_type st_attachment);
+
+struct pipe_context*
+xmesa_get_context(struct st_framebuffer_iface* stfbi);
+
+bool
+xmesa_st_framebuffer_validate_textures(struct st_framebuffer_iface *stfbi,
+ unsigned width, unsigned height,
+ unsigned mask);
+#endif /* _XM_ST_H_ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 01:01:02 +0000