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Diffstat (limited to 'src/glx/glxcmds.c')
| -rw-r--r-- | src/glx/glxcmds.c | 3173 |
1 files changed, 3173 insertions, 0 deletions
diff --git a/src/glx/glxcmds.c b/src/glx/glxcmds.c new file mode 100644 index 00000000000..c3be974ea91 --- /dev/null +++ b/src/glx/glxcmds.c @@ -0,0 +1,3173 @@ +/* + * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) + * Copyright (C) 1991-2000 Silicon Graphics, 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 including the dates of first publication and + * either this permission notice or a reference to + * http://oss.sgi.com/projects/FreeB/ + * 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 + * SILICON GRAPHICS, INC. 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. + * + * Except as contained in this notice, the name of Silicon Graphics, Inc. + * shall not be used in advertising or otherwise to promote the sale, use or + * other dealings in this Software without prior written authorization from + * Silicon Graphics, Inc. + */ + +/** + * \file glxcmds.c + * Client-side GLX interface. + */ + +#include "glxclient.h" +#include "glapi.h" +#include "glxextensions.h" +#include "glcontextmodes.h" + +#ifdef GLX_DIRECT_RENDERING +#include <sys/time.h> +#include <X11/extensions/xf86vmode.h> +#include "xf86dri.h" +#endif + +#if defined(USE_XCB) +#include <X11/Xlib-xcb.h> +#include <xcb/xcb.h> +#include <xcb/glx.h> +#endif + +static const char __glXGLXClientVendorName[] = "Mesa Project and SGI"; +static const char __glXGLXClientVersion[] = "1.4"; + + +/****************************************************************************/ + +#ifdef GLX_DIRECT_RENDERING + +static Bool windowExistsFlag; +static int +windowExistsErrorHandler(Display * dpy, XErrorEvent * xerr) +{ + if (xerr->error_code == BadWindow) { + windowExistsFlag = GL_FALSE; + } + return 0; +} + +/** + * Find drawables in the local hash that have been destroyed on the + * server. + * + * \param dpy Display to destroy drawables for + * \param screen Screen number to destroy drawables for + */ +static void +GarbageCollectDRIDrawables(Display * dpy, __GLXscreenConfigs * sc) +{ + XID draw; + __GLXDRIdrawable *pdraw; + XWindowAttributes xwa; + int (*oldXErrorHandler) (Display *, XErrorEvent *); + + /* Set no-op error handler so Xlib doesn't bail out if the windows + * has alreay been destroyed on the server. */ + XSync(dpy, GL_FALSE); + oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler); + + if (__glxHashFirst(sc->drawHash, &draw, (void *) &pdraw) == 1) { + do { + windowExistsFlag = GL_TRUE; + XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */ + if (!windowExistsFlag) { + /* Destroy the local drawable data, if the drawable no + longer exists in the Xserver */ + (*pdraw->destroyDrawable) (pdraw); + __glxHashDelete(sc->drawHash, draw); + } + } while (__glxHashNext(sc->drawHash, &draw, (void *) &pdraw) == 1); + } + + XSync(dpy, GL_FALSE); + XSetErrorHandler(oldXErrorHandler); +} + +extern __GLXDRIdrawable *GetGLXDRIDrawable(Display * dpy, + GLXDrawable drawable, + int *const scrn_num); + +/** + * Get the __DRIdrawable for the drawable associated with a GLXContext + * + * \param dpy The display associated with \c drawable. + * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved. + * \param scrn_num If non-NULL, the drawables screen is stored there + * \returns A pointer to the context's __DRIdrawable on success, or NULL if + * the drawable is not associated with a direct-rendering context. + */ +_X_HIDDEN __GLXDRIdrawable * +GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable, int *const scrn_num) +{ + __GLXdisplayPrivate *priv = __glXInitialize(dpy); + __GLXDRIdrawable *pdraw; + const unsigned screen_count = ScreenCount(dpy); + unsigned i; + __GLXscreenConfigs *psc; + + if (priv == NULL) + return NULL; + + for (i = 0; i < screen_count; i++) { + psc = &priv->screenConfigs[i]; + if (psc->drawHash == NULL) + continue; + + if (__glxHashLookup(psc->drawHash, drawable, (void *) &pdraw) == 0) { + if (scrn_num != NULL) + *scrn_num = i; + return pdraw; + } + } + + return NULL; +} + +#endif + + +/** + * Get the GLX per-screen data structure associated with a GLX context. + * + * \param dpy Display for which the GLX per-screen information is to be + * retrieved. + * \param scrn Screen on \c dpy for which the GLX per-screen information is + * to be retrieved. + * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn + * specify a valid GLX screen, or NULL otherwise. + * + * \todo Should this function validate that \c scrn is within the screen + * number range for \c dpy? + */ + +static __GLXscreenConfigs * +GetGLXScreenConfigs(Display * dpy, int scrn) +{ + __GLXdisplayPrivate *const priv = __glXInitialize(dpy); + + return (priv + && priv->screenConfigs != + NULL) ? &priv->screenConfigs[scrn] : NULL; +} + + +static int +GetGLXPrivScreenConfig(Display * dpy, int scrn, __GLXdisplayPrivate ** ppriv, + __GLXscreenConfigs ** ppsc) +{ + /* Initialize the extension, if needed . This has the added value + * of initializing/allocating the display private + */ + + if (dpy == NULL) { + return GLX_NO_EXTENSION; + } + + *ppriv = __glXInitialize(dpy); + if (*ppriv == NULL) { + return GLX_NO_EXTENSION; + } + + /* Check screen number to see if its valid */ + if ((scrn < 0) || (scrn >= ScreenCount(dpy))) { + return GLX_BAD_SCREEN; + } + + /* Check to see if the GL is supported on this screen */ + *ppsc = &((*ppriv)->screenConfigs[scrn]); + if ((*ppsc)->configs == NULL) { + /* No support for GL on this screen regardless of visual */ + return GLX_BAD_VISUAL; + } + + return Success; +} + + +/** + * Determine if a \c GLXFBConfig supplied by the application is valid. + * + * \param dpy Application supplied \c Display pointer. + * \param config Application supplied \c GLXFBConfig. + * + * \returns If the \c GLXFBConfig is valid, the a pointer to the matching + * \c __GLcontextModes structure is returned. Otherwise, \c NULL + * is returned. + */ +static __GLcontextModes * +ValidateGLXFBConfig(Display * dpy, GLXFBConfig config) +{ + __GLXdisplayPrivate *const priv = __glXInitialize(dpy); + const unsigned num_screens = ScreenCount(dpy); + unsigned i; + const __GLcontextModes *modes; + + + if (priv != NULL) { + for (i = 0; i < num_screens; i++) { + for (modes = priv->screenConfigs[i].configs; modes != NULL; + modes = modes->next) { + if (modes == (__GLcontextModes *) config) { + return (__GLcontextModes *) config; + } + } + } + } + + return NULL; +} + + +/** + * \todo It should be possible to move the allocate of \c client_state_private + * later in the function for direct-rendering contexts. Direct-rendering + * contexts don't need to track client state, so they don't need that memory + * at all. + * + * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new + * function called \c __glXAllocateClientState that allocates the memory and + * does all the initialization (including the pixel pack / unpack). + */ +static GLXContext +AllocateGLXContext(Display * dpy) +{ + GLXContext gc; + int bufSize; + CARD8 opcode; + __GLXattribute *state; + + if (!dpy) + return NULL; + + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return NULL; + } + + /* Allocate our context record */ + gc = (GLXContext) Xmalloc(sizeof(struct __GLXcontextRec)); + if (!gc) { + /* Out of memory */ + return NULL; + } + memset(gc, 0, sizeof(struct __GLXcontextRec)); + + state = Xmalloc(sizeof(struct __GLXattributeRec)); + if (state == NULL) { + /* Out of memory */ + Xfree(gc); + return NULL; + } + gc->client_state_private = state; + memset(gc->client_state_private, 0, sizeof(struct __GLXattributeRec)); + state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL); + + /* + ** Create a temporary buffer to hold GLX rendering commands. The size + ** of the buffer is selected so that the maximum number of GLX rendering + ** commands can fit in a single X packet and still have room in the X + ** packet for the GLXRenderReq header. + */ + + bufSize = (XMaxRequestSize(dpy) * 4) - sz_xGLXRenderReq; + gc->buf = (GLubyte *) Xmalloc(bufSize); + if (!gc->buf) { + Xfree(gc->client_state_private); + Xfree(gc); + return NULL; + } + gc->bufSize = bufSize; + + /* Fill in the new context */ + gc->renderMode = GL_RENDER; + + state->storePack.alignment = 4; + state->storeUnpack.alignment = 4; + + gc->attributes.stackPointer = &gc->attributes.stack[0]; + + /* + ** PERFORMANCE NOTE: A mode dependent fill image can speed things up. + ** Other code uses the fastImageUnpack bit, but it is never set + ** to GL_TRUE. + */ + gc->fastImageUnpack = GL_FALSE; + gc->fillImage = __glFillImage; + gc->pc = gc->buf; + gc->bufEnd = gc->buf + bufSize; + gc->isDirect = GL_FALSE; + if (__glXDebug) { + /* + ** Set limit register so that there will be one command per packet + */ + gc->limit = gc->buf; + } + else { + gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE; + } + gc->createDpy = dpy; + gc->majorOpcode = opcode; + + /* + ** Constrain the maximum drawing command size allowed to be + ** transfered using the X_GLXRender protocol request. First + ** constrain by a software limit, then constrain by the protocl + ** limit. + */ + if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) { + bufSize = __GLX_RENDER_CMD_SIZE_LIMIT; + } + if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) { + bufSize = __GLX_MAX_RENDER_CMD_SIZE; + } + gc->maxSmallRenderCommandSize = bufSize; + return gc; +} + + +/** + * Create a new context. Exactly one of \c vis and \c fbconfig should be + * non-NULL. + * + * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or + * SGIX_fbconfig protocol be used? + * \param renderType For FBConfigs, what is the rendering type? + */ + +static GLXContext +CreateContext(Display * dpy, XVisualInfo * vis, + const __GLcontextModes * const fbconfig, + GLXContext shareList, + Bool allowDirect, GLXContextID contextID, + Bool use_glx_1_3, int renderType) +{ + GLXContext gc; +#ifdef GLX_DIRECT_RENDERING + int screen = (fbconfig == NULL) ? vis->screen : fbconfig->screen; + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); +#endif + + if (dpy == NULL) + return NULL; + + gc = AllocateGLXContext(dpy); + if (!gc) + return NULL; + + if (None == contextID) { + if ((vis == NULL) && (fbconfig == NULL)) + return NULL; + +#ifdef GLX_DIRECT_RENDERING + if (allowDirect && psc->driScreen) { + const __GLcontextModes *mode; + + if (fbconfig == NULL) { + mode = _gl_context_modes_find_visual(psc->visuals, vis->visualid); + if (mode == NULL) { + xError error; + + error.errorCode = BadValue; + error.resourceID = vis->visualid; + error.sequenceNumber = dpy->request; + error.type = X_Error; + error.majorCode = gc->majorOpcode; + error.minorCode = X_GLXCreateContext; + _XError(dpy, &error); + return None; + } + if (renderType == 0) { + /* Initialize renderType now */ + renderType = mode->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE; + } + } + else { + mode = fbconfig; + } + + gc->driContext = psc->driScreen->createContext(psc, mode, gc, + shareList, + renderType); + if (gc->driContext != NULL) { + gc->screen = mode->screen; + gc->psc = psc; + gc->mode = mode; + gc->isDirect = GL_TRUE; + } + } +#endif + + LockDisplay(dpy); + if (fbconfig == NULL) { + xGLXCreateContextReq *req; + + /* Send the glXCreateContext request */ + GetReq(GLXCreateContext, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXCreateContext; + req->context = gc->xid = XAllocID(dpy); + req->visual = vis->visualid; + req->screen = vis->screen; + req->shareList = shareList ? shareList->xid : None; +#ifdef GLX_DIRECT_RENDERING + req->isDirect = gc->driContext != NULL; +#else + req->isDirect = 0; +#endif + } + else if (use_glx_1_3) { + xGLXCreateNewContextReq *req; + + /* Send the glXCreateNewContext request */ + GetReq(GLXCreateNewContext, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXCreateNewContext; + req->context = gc->xid = XAllocID(dpy); + req->fbconfig = fbconfig->fbconfigID; + req->screen = fbconfig->screen; + req->renderType = renderType; + req->shareList = shareList ? shareList->xid : None; +#ifdef GLX_DIRECT_RENDERING + req->isDirect = gc->driContext != NULL; +#else + req->isDirect = 0; +#endif + } + else { + xGLXVendorPrivateWithReplyReq *vpreq; + xGLXCreateContextWithConfigSGIXReq *req; + + /* Send the glXCreateNewContext request */ + GetReqExtra(GLXVendorPrivateWithReply, + sz_xGLXCreateContextWithConfigSGIXReq - + sz_xGLXVendorPrivateWithReplyReq, vpreq); + req = (xGLXCreateContextWithConfigSGIXReq *) vpreq; + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXVendorPrivateWithReply; + req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX; + req->context = gc->xid = XAllocID(dpy); + req->fbconfig = fbconfig->fbconfigID; + req->screen = fbconfig->screen; + req->renderType = renderType; + req->shareList = shareList ? shareList->xid : None; +#ifdef GLX_DIRECT_RENDERING + req->isDirect = gc->driContext != NULL; +#else + req->isDirect = 0; +#endif + } + + UnlockDisplay(dpy); + SyncHandle(); + gc->imported = GL_FALSE; + } + else { + gc->xid = contextID; + gc->imported = GL_TRUE; + } + + gc->renderType = renderType; + + return gc; +} + +PUBLIC GLXContext +glXCreateContext(Display * dpy, XVisualInfo * vis, + GLXContext shareList, Bool allowDirect) +{ + return CreateContext(dpy, vis, NULL, shareList, allowDirect, None, + False, 0); +} + +_X_HIDDEN void +__glXFreeContext(__GLXcontext * gc) +{ + if (gc->vendor) + XFree((char *) gc->vendor); + if (gc->renderer) + XFree((char *) gc->renderer); + if (gc->version) + XFree((char *) gc->version); + if (gc->extensions) + XFree((char *) gc->extensions); + __glFreeAttributeState(gc); + XFree((char *) gc->buf); + Xfree((char *) gc->client_state_private); + XFree((char *) gc); + +} + +/* +** Destroy the named context +*/ +static void +DestroyContext(Display * dpy, GLXContext gc) +{ + xGLXDestroyContextReq *req; + GLXContextID xid; + CARD8 opcode; + GLboolean imported; + + opcode = __glXSetupForCommand(dpy); + if (!opcode || !gc) { + return; + } + + __glXLock(); + xid = gc->xid; + imported = gc->imported; + gc->xid = None; + + if (gc->currentDpy) { + /* This context is bound to some thread. According to the man page, + * we should not actually delete the context until it's unbound. + * Note that we set gc->xid = None above. In MakeContextCurrent() + * we check for that and delete the context there. + */ + __glXUnlock(); + return; + } + +#ifdef GLX_DIRECT_RENDERING + /* Destroy the direct rendering context */ + if (gc->driContext) { + (*gc->driContext->destroyContext) (gc->driContext, gc->psc, dpy); + gc->driContext = NULL; + GarbageCollectDRIDrawables(dpy, gc->psc); + } +#endif + + __glXFreeVertexArrayState(gc); + + if (gc->currentDpy) { + /* Have to free later cuz it's in use now */ + __glXUnlock(); + } + else { + /* Destroy the handle if not current to anybody */ + __glXUnlock(); + __glXFreeContext(gc); + } + + if (!imported) { + /* + ** This dpy also created the server side part of the context. + ** Send the glXDestroyContext request. + */ + LockDisplay(dpy); + GetReq(GLXDestroyContext, req); + req->reqType = opcode; + req->glxCode = X_GLXDestroyContext; + req->context = xid; + UnlockDisplay(dpy); + SyncHandle(); + } +} + +PUBLIC void +glXDestroyContext(Display * dpy, GLXContext gc) +{ + DestroyContext(dpy, gc); +} + +/* +** Return the major and minor version #s for the GLX extension +*/ +PUBLIC Bool +glXQueryVersion(Display * dpy, int *major, int *minor) +{ + __GLXdisplayPrivate *priv; + + /* Init the extension. This fetches the major and minor version. */ + priv = __glXInitialize(dpy); + if (!priv) + return GL_FALSE; + + if (major) + *major = priv->majorVersion; + if (minor) + *minor = priv->minorVersion; + return GL_TRUE; +} + +/* +** Query the existance of the GLX extension +*/ +PUBLIC Bool +glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) +{ + int major_op, erb, evb; + Bool rv; + + rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); + if (rv) { + if (errorBase) + *errorBase = erb; + if (eventBase) + *eventBase = evb; + } + return rv; +} + +/* +** Put a barrier in the token stream that forces the GL to finish its +** work before X can proceed. +*/ +PUBLIC void +glXWaitGL(void) +{ + xGLXWaitGLReq *req; + GLXContext gc = __glXGetCurrentContext(); + Display *dpy = gc->currentDpy; + + if (!dpy) + return; + + /* Flush any pending commands out */ + __glXFlushRenderBuffer(gc, gc->pc); + +#ifdef GLX_DIRECT_RENDERING + if (gc->driContext) { + int screen; + __GLXDRIdrawable *pdraw = + GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen); + + if (pdraw != NULL) { + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + glFlush(); + if (psc->driScreen->waitGL != NULL) + (*psc->driScreen->waitGL) (pdraw); + } + return; + } +#endif + + /* Send the glXWaitGL request */ + LockDisplay(dpy); + GetReq(GLXWaitGL, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXWaitGL; + req->contextTag = gc->currentContextTag; + UnlockDisplay(dpy); + SyncHandle(); +} + +/* +** Put a barrier in the token stream that forces X to finish its +** work before GL can proceed. +*/ +PUBLIC void +glXWaitX(void) +{ + xGLXWaitXReq *req; + GLXContext gc = __glXGetCurrentContext(); + Display *dpy = gc->currentDpy; + + if (!dpy) + return; + + /* Flush any pending commands out */ + __glXFlushRenderBuffer(gc, gc->pc); + +#ifdef GLX_DIRECT_RENDERING + if (gc->driContext) { + int screen; + __GLXDRIdrawable *pdraw = + GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen); + + if (pdraw != NULL) { + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + if (psc->driScreen->waitX != NULL) + (*psc->driScreen->waitX) (pdraw); + } + else + XSync(dpy, False); + return; + } +#endif + + /* + ** Send the glXWaitX request. + */ + LockDisplay(dpy); + GetReq(GLXWaitX, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXWaitX; + req->contextTag = gc->currentContextTag; + UnlockDisplay(dpy); + SyncHandle(); +} + +PUBLIC void +glXUseXFont(Font font, int first, int count, int listBase) +{ + xGLXUseXFontReq *req; + GLXContext gc = __glXGetCurrentContext(); + Display *dpy = gc->currentDpy; + + if (!dpy) + return; + + /* Flush any pending commands out */ + (void) __glXFlushRenderBuffer(gc, gc->pc); + +#ifdef GLX_DIRECT_RENDERING + if (gc->driContext) { + DRI_glXUseXFont(font, first, count, listBase); + return; + } +#endif + + /* Send the glXUseFont request */ + LockDisplay(dpy); + GetReq(GLXUseXFont, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXUseXFont; + req->contextTag = gc->currentContextTag; + req->font = font; + req->first = first; + req->count = count; + req->listBase = listBase; + UnlockDisplay(dpy); + SyncHandle(); +} + +/************************************************************************/ + +/* +** Copy the source context to the destination context using the +** attribute "mask". +*/ +PUBLIC void +glXCopyContext(Display * dpy, GLXContext source, + GLXContext dest, unsigned long mask) +{ + xGLXCopyContextReq *req; + GLXContext gc = __glXGetCurrentContext(); + GLXContextTag tag; + CARD8 opcode; + + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return; + } + +#ifdef GLX_DIRECT_RENDERING + if (gc->driContext) { + /* NOT_DONE: This does not work yet */ + } +#endif + + /* + ** If the source is the current context, send its tag so that the context + ** can be flushed before the copy. + */ + if (source == gc && dpy == gc->currentDpy) { + tag = gc->currentContextTag; + } + else { + tag = 0; + } + + /* Send the glXCopyContext request */ + LockDisplay(dpy); + GetReq(GLXCopyContext, req); + req->reqType = opcode; + req->glxCode = X_GLXCopyContext; + req->source = source ? source->xid : None; + req->dest = dest ? dest->xid : None; + req->mask = mask; + req->contextTag = tag; + UnlockDisplay(dpy); + SyncHandle(); +} + + +/** + * Determine if a context uses direct rendering. + * + * \param dpy Display where the context was created. + * \param contextID ID of the context to be tested. + * + * \returns \c GL_TRUE if the context is direct rendering or not. + */ +static Bool +__glXIsDirect(Display * dpy, GLXContextID contextID) +{ +#if !defined(USE_XCB) + xGLXIsDirectReq *req; + xGLXIsDirectReply reply; +#endif + CARD8 opcode; + + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return GL_FALSE; + } + +#ifdef USE_XCB + xcb_connection_t *c = XGetXCBConnection(dpy); + xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, + xcb_glx_is_direct + (c, contextID), + NULL); + + const Bool is_direct = reply->is_direct ? True : False; + free(reply); + + return is_direct; +#else + /* Send the glXIsDirect request */ + LockDisplay(dpy); + GetReq(GLXIsDirect, req); + req->reqType = opcode; + req->glxCode = X_GLXIsDirect; + req->context = contextID; + _XReply(dpy, (xReply *) & reply, 0, False); + UnlockDisplay(dpy); + SyncHandle(); + + return reply.isDirect; +#endif /* USE_XCB */ +} + +/** + * \todo + * Shouldn't this function \b always return \c GL_FALSE when + * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with + * the GLX protocol here at all? + */ +PUBLIC Bool +glXIsDirect(Display * dpy, GLXContext gc) +{ + if (!gc) { + return GL_FALSE; +#ifdef GLX_DIRECT_RENDERING + } + else if (gc->driContext) { + return GL_TRUE; +#endif + } + return __glXIsDirect(dpy, gc->xid); +} + +PUBLIC GLXPixmap +glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) +{ + xGLXCreateGLXPixmapReq *req; + GLXPixmap xid; + CARD8 opcode; + + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return None; + } + + /* Send the glXCreateGLXPixmap request */ + LockDisplay(dpy); + GetReq(GLXCreateGLXPixmap, req); + req->reqType = opcode; + req->glxCode = X_GLXCreateGLXPixmap; + req->screen = vis->screen; + req->visual = vis->visualid; + req->pixmap = pixmap; + req->glxpixmap = xid = XAllocID(dpy); + UnlockDisplay(dpy); + SyncHandle(); + +#ifdef GLX_DIRECT_RENDERING + do { + /* FIXME: Maybe delay __DRIdrawable creation until the drawable + * is actually bound to a context... */ + + __GLXdisplayPrivate *const priv = __glXInitialize(dpy); + __GLXDRIdrawable *pdraw; + __GLXscreenConfigs *psc; + __GLcontextModes *modes; + + psc = &priv->screenConfigs[vis->screen]; + if (psc->driScreen == NULL) + break; + modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid); + pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap, modes); + if (pdraw == NULL) { + fprintf(stderr, "failed to create pixmap\n"); + break; + } + + if (__glxHashInsert(psc->drawHash, req->glxpixmap, pdraw)) { + (*pdraw->destroyDrawable) (pdraw); + return None; /* FIXME: Check what we're supposed to do here... */ + } + } while (0); +#endif + + return xid; +} + +/* +** Destroy the named pixmap +*/ +PUBLIC void +glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) +{ + xGLXDestroyGLXPixmapReq *req; + CARD8 opcode; + + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return; + } + + /* Send the glXDestroyGLXPixmap request */ + LockDisplay(dpy); + GetReq(GLXDestroyGLXPixmap, req); + req->reqType = opcode; + req->glxCode = X_GLXDestroyGLXPixmap; + req->glxpixmap = glxpixmap; + UnlockDisplay(dpy); + SyncHandle(); + +#ifdef GLX_DIRECT_RENDERING + { + int screen; + __GLXdisplayPrivate *const priv = __glXInitialize(dpy); + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap, &screen); + __GLXscreenConfigs *psc = &priv->screenConfigs[screen]; + + if (pdraw != NULL) { + (*pdraw->destroyDrawable) (pdraw); + __glxHashDelete(psc->drawHash, glxpixmap); + } + } +#endif +} + +PUBLIC void +glXSwapBuffers(Display * dpy, GLXDrawable drawable) +{ + GLXContext gc; + GLXContextTag tag; + CARD8 opcode; +#ifdef USE_XCB + xcb_connection_t *c; +#else + xGLXSwapBuffersReq *req; +#endif + +#ifdef GLX_DIRECT_RENDERING + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL); + + if (pdraw != NULL) { + glFlush(); + (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); + return; + } +#endif + + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return; + } + + /* + ** The calling thread may or may not have a current context. If it + ** does, send the context tag so the server can do a flush. + */ + gc = __glXGetCurrentContext(); + if ((gc != NULL) && (dpy == gc->currentDpy) && + ((drawable == gc->currentDrawable) + || (drawable == gc->currentReadable))) { + tag = gc->currentContextTag; + } + else { + tag = 0; + } + +#ifdef USE_XCB + c = XGetXCBConnection(dpy); + xcb_glx_swap_buffers(c, tag, drawable); + xcb_flush(c); +#else + /* Send the glXSwapBuffers request */ + LockDisplay(dpy); + GetReq(GLXSwapBuffers, req); + req->reqType = opcode; + req->glxCode = X_GLXSwapBuffers; + req->drawable = drawable; + req->contextTag = tag; + UnlockDisplay(dpy); + SyncHandle(); + XFlush(dpy); +#endif /* USE_XCB */ +} + + +/* +** Return configuration information for the given display, screen and +** visual combination. +*/ +PUBLIC int +glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, + int *value_return) +{ + __GLXdisplayPrivate *priv; + __GLXscreenConfigs *psc; + __GLcontextModes *modes; + int status; + + status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); + if (status == Success) { + modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid); + + /* Lookup attribute after first finding a match on the visual */ + if (modes != NULL) { + return _gl_get_context_mode_data(modes, attribute, value_return); + } + + status = GLX_BAD_VISUAL; + } + + /* + ** If we can't find the config for this visual, this visual is not + ** supported by the OpenGL implementation on the server. + */ + if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { + *value_return = GL_FALSE; + status = Success; + } + + return status; +} + +/************************************************************************/ + +static void +init_fbconfig_for_chooser(__GLcontextModes * config, + GLboolean fbconfig_style_tags) +{ + memset(config, 0, sizeof(__GLcontextModes)); + config->visualID = (XID) GLX_DONT_CARE; + config->visualType = GLX_DONT_CARE; + + /* glXChooseFBConfig specifies different defaults for these two than + * glXChooseVisual. + */ + if (fbconfig_style_tags) { + config->rgbMode = GL_TRUE; + config->doubleBufferMode = GLX_DONT_CARE; + } + + config->visualRating = GLX_DONT_CARE; + config->transparentPixel = GLX_NONE; + config->transparentRed = GLX_DONT_CARE; + config->transparentGreen = GLX_DONT_CARE; + config->transparentBlue = GLX_DONT_CARE; + config->transparentAlpha = GLX_DONT_CARE; + config->transparentIndex = GLX_DONT_CARE; + + config->drawableType = GLX_WINDOW_BIT; + config->renderType = + (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; + config->xRenderable = GLX_DONT_CARE; + config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); + + config->swapMethod = GLX_DONT_CARE; +} + +#define MATCH_DONT_CARE( param ) \ + do { \ + if ( (a-> param != GLX_DONT_CARE) \ + && (a-> param != b-> param) ) { \ + return False; \ + } \ + } while ( 0 ) + +#define MATCH_MINIMUM( param ) \ + do { \ + if ( (a-> param != GLX_DONT_CARE) \ + && (a-> param > b-> param) ) { \ + return False; \ + } \ + } while ( 0 ) + +#define MATCH_EXACT( param ) \ + do { \ + if ( a-> param != b-> param) { \ + return False; \ + } \ + } while ( 0 ) + +/** + * Determine if two GLXFBConfigs are compatible. + * + * \param a Application specified config to test. + * \param b Server specified config to test against \c a. + */ +static Bool +fbconfigs_compatible(const __GLcontextModes * const a, + const __GLcontextModes * const b) +{ + MATCH_DONT_CARE(doubleBufferMode); + MATCH_DONT_CARE(visualType); + MATCH_DONT_CARE(visualRating); + MATCH_DONT_CARE(xRenderable); + MATCH_DONT_CARE(fbconfigID); + MATCH_DONT_CARE(swapMethod); + + MATCH_MINIMUM(rgbBits); + MATCH_MINIMUM(numAuxBuffers); + MATCH_MINIMUM(redBits); + MATCH_MINIMUM(greenBits); + MATCH_MINIMUM(blueBits); + MATCH_MINIMUM(alphaBits); + MATCH_MINIMUM(depthBits); + MATCH_MINIMUM(stencilBits); + MATCH_MINIMUM(accumRedBits); + MATCH_MINIMUM(accumGreenBits); + MATCH_MINIMUM(accumBlueBits); + MATCH_MINIMUM(accumAlphaBits); + MATCH_MINIMUM(sampleBuffers); + MATCH_MINIMUM(maxPbufferWidth); + MATCH_MINIMUM(maxPbufferHeight); + MATCH_MINIMUM(maxPbufferPixels); + MATCH_MINIMUM(samples); + + MATCH_DONT_CARE(stereoMode); + MATCH_EXACT(level); + + if (((a->drawableType & b->drawableType) == 0) + || ((a->renderType & b->renderType) == 0)) { + return False; + } + + + /* There is a bug in a few of the XFree86 DDX drivers. They contain + * visuals with a "transparent type" of 0 when they really mean GLX_NONE. + * Technically speaking, it is a bug in the DDX driver, but there is + * enough of an installed base to work around the problem here. In any + * case, 0 is not a valid value of the transparent type, so we'll treat 0 + * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and + * 0 from the server to be a match to maintain backward compatibility with + * the (broken) drivers. + */ + + if (a->transparentPixel != GLX_DONT_CARE && a->transparentPixel != 0) { + if (a->transparentPixel == GLX_NONE) { + if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) + return False; + } + else { + MATCH_EXACT(transparentPixel); + } + + switch (a->transparentPixel) { + case GLX_TRANSPARENT_RGB: + MATCH_DONT_CARE(transparentRed); + MATCH_DONT_CARE(transparentGreen); + MATCH_DONT_CARE(transparentBlue); + MATCH_DONT_CARE(transparentAlpha); + break; + + case GLX_TRANSPARENT_INDEX: + MATCH_DONT_CARE(transparentIndex); + break; + + default: + break; + } + } + + return True; +} + + +/* There's some trickly language in the GLX spec about how this is supposed + * to work. Basically, if a given component size is either not specified + * or the requested size is zero, it is supposed to act like PERFER_SMALLER. + * Well, that's really hard to do with the code as-is. This behavior is + * closer to correct, but still not technically right. + */ +#define PREFER_LARGER_OR_ZERO(comp) \ + do { \ + if ( ((*a)-> comp) != ((*b)-> comp) ) { \ + if ( ((*a)-> comp) == 0 ) { \ + return -1; \ + } \ + else if ( ((*b)-> comp) == 0 ) { \ + return 1; \ + } \ + else { \ + return ((*b)-> comp) - ((*a)-> comp) ; \ + } \ + } \ + } while( 0 ) + +#define PREFER_LARGER(comp) \ + do { \ + if ( ((*a)-> comp) != ((*b)-> comp) ) { \ + return ((*b)-> comp) - ((*a)-> comp) ; \ + } \ + } while( 0 ) + +#define PREFER_SMALLER(comp) \ + do { \ + if ( ((*a)-> comp) != ((*b)-> comp) ) { \ + return ((*a)-> comp) - ((*b)-> comp) ; \ + } \ + } while( 0 ) + +/** + * Compare two GLXFBConfigs. This function is intended to be used as the + * compare function passed in to qsort. + * + * \returns If \c a is a "better" config, according to the specification of + * SGIX_fbconfig, a number less than zero is returned. If \c b is + * better, then a number greater than zero is return. If both are + * equal, zero is returned. + * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX + */ +static int +fbconfig_compare(const __GLcontextModes * const *const a, + const __GLcontextModes * const *const b) +{ + /* The order of these comparisons must NOT change. It is defined by + * the GLX 1.3 spec and ARB_multisample. + */ + + PREFER_SMALLER(visualSelectGroup); + + /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and + * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the + * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). + */ + PREFER_SMALLER(visualRating); + + /* This isn't quite right. It is supposed to compare the sum of the + * components the user specifically set minimums for. + */ + PREFER_LARGER_OR_ZERO(redBits); + PREFER_LARGER_OR_ZERO(greenBits); + PREFER_LARGER_OR_ZERO(blueBits); + PREFER_LARGER_OR_ZERO(alphaBits); + + PREFER_SMALLER(rgbBits); + + if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { + /* Prefer single-buffer. + */ + return (!(*a)->doubleBufferMode) ? -1 : 1; + } + + PREFER_SMALLER(numAuxBuffers); + + PREFER_LARGER_OR_ZERO(depthBits); + PREFER_SMALLER(stencilBits); + + /* This isn't quite right. It is supposed to compare the sum of the + * components the user specifically set minimums for. + */ + PREFER_LARGER_OR_ZERO(accumRedBits); + PREFER_LARGER_OR_ZERO(accumGreenBits); + PREFER_LARGER_OR_ZERO(accumBlueBits); + PREFER_LARGER_OR_ZERO(accumAlphaBits); + + PREFER_SMALLER(visualType); + + /* None of the multisample specs say where this comparison should happen, + * so I put it near the end. + */ + PREFER_SMALLER(sampleBuffers); + PREFER_SMALLER(samples); + + /* None of the pbuffer or fbconfig specs say that this comparison needs + * to happen at all, but it seems like it should. + */ + PREFER_LARGER(maxPbufferWidth); + PREFER_LARGER(maxPbufferHeight); + PREFER_LARGER(maxPbufferPixels); + + return 0; +} + + +/** + * Selects and sorts a subset of the supplied configs based on the attributes. + * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, + * and \c glXChooseFBConfigSGIX. + * + * \param configs Array of pointers to possible configs. The elements of + * this array that do not meet the criteria will be set to + * NULL. The remaining elements will be sorted according to + * the various visual / FBConfig selection rules. + * \param num_configs Number of elements in the \c configs array. + * \param attribList Attributes used select from \c configs. This array is + * terminated by a \c None tag. The array can either take + * the form expected by \c glXChooseVisual (where boolean + * tags do not have a value) or by \c glXChooseFBConfig + * (where every tag has a value). + * \param fbconfig_style_tags Selects whether \c attribList is in + * \c glXChooseVisual style or + * \c glXChooseFBConfig style. + * \returns The number of valid elements left in \c configs. + * + * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX + */ +static int +choose_visual(__GLcontextModes ** configs, int num_configs, + const int *attribList, GLboolean fbconfig_style_tags) +{ + __GLcontextModes test_config; + int base; + int i; + + /* This is a fairly direct implementation of the selection method + * described by GLX_SGIX_fbconfig. Start by culling out all the + * configs that are not compatible with the selected parameter + * list. + */ + + init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); + __glXInitializeVisualConfigFromTags(&test_config, 512, + (const INT32 *) attribList, + GL_TRUE, fbconfig_style_tags); + + base = 0; + for (i = 0; i < num_configs; i++) { + if (fbconfigs_compatible(&test_config, configs[i])) { + configs[base] = configs[i]; + base++; + } + } + + if (base == 0) { + return 0; + } + + if (base < num_configs) { + (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); + } + + /* After the incompatible configs are removed, the resulting + * list is sorted according to the rules set out in the various + * specifications. + */ + + qsort(configs, base, sizeof(__GLcontextModes *), + (int (*)(const void *, const void *)) fbconfig_compare); + return base; +} + + + + +/* +** Return the visual that best matches the template. Return None if no +** visual matches the template. +*/ +PUBLIC XVisualInfo * +glXChooseVisual(Display * dpy, int screen, int *attribList) +{ + XVisualInfo *visualList = NULL; + __GLXdisplayPrivate *priv; + __GLXscreenConfigs *psc; + __GLcontextModes test_config; + __GLcontextModes *modes; + const __GLcontextModes *best_config = NULL; + + /* + ** Get a list of all visuals, return if list is empty + */ + if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { + return None; + } + + + /* + ** Build a template from the defaults and the attribute list + ** Free visual list and return if an unexpected token is encountered + */ + init_fbconfig_for_chooser(&test_config, GL_FALSE); + __glXInitializeVisualConfigFromTags(&test_config, 512, + (const INT32 *) attribList, + GL_TRUE, GL_FALSE); + + /* + ** Eliminate visuals that don't meet minimum requirements + ** Compute a score for those that do + ** Remember which visual, if any, got the highest score + ** If no visual is acceptable, return None + ** Otherwise, create an XVisualInfo list with just the selected X visual + ** and return this. + */ + for (modes = psc->visuals; modes != NULL; modes = modes->next) { + if (fbconfigs_compatible(&test_config, modes) + && ((best_config == NULL) + || + (fbconfig_compare + ((const __GLcontextModes * const *const) &modes, + &best_config) < 0))) { + XVisualInfo visualTemplate; + XVisualInfo *newList; + int i; + + visualTemplate.screen = screen; + visualTemplate.visualid = modes->visualID; + newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, + &visualTemplate, &i); + + if (newList) { + Xfree(visualList); + visualList = newList; + best_config = modes; + } + } + } + + return visualList; +} + + +PUBLIC const char * +glXQueryExtensionsString(Display * dpy, int screen) +{ + __GLXscreenConfigs *psc; + __GLXdisplayPrivate *priv; + + if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { + return NULL; + } + + if (!psc->effectiveGLXexts) { + if (!psc->serverGLXexts) { + psc->serverGLXexts = + __glXQueryServerString(dpy, priv->majorOpcode, screen, + GLX_EXTENSIONS); + } + + __glXCalculateUsableExtensions(psc, +#ifdef GLX_DIRECT_RENDERING + (psc->driScreen != NULL), +#else + GL_FALSE, +#endif + priv->minorVersion); + } + + return psc->effectiveGLXexts; +} + +PUBLIC const char * +glXGetClientString(Display * dpy, int name) +{ + switch (name) { + case GLX_VENDOR: + return (__glXGLXClientVendorName); + case GLX_VERSION: + return (__glXGLXClientVersion); + case GLX_EXTENSIONS: + return (__glXGetClientExtensions()); + default: + return NULL; + } +} + +PUBLIC const char * +glXQueryServerString(Display * dpy, int screen, int name) +{ + __GLXscreenConfigs *psc; + __GLXdisplayPrivate *priv; + const char **str; + + + if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { + return NULL; + } + + switch (name) { + case GLX_VENDOR: + str = &priv->serverGLXvendor; + break; + case GLX_VERSION: + str = &priv->serverGLXversion; + break; + case GLX_EXTENSIONS: + str = &psc->serverGLXexts; + break; + default: + return NULL; + } + + if (*str == NULL) { + *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); + } + + return *str; +} + +void +__glXClientInfo(Display * dpy, int opcode) +{ + char *ext_str = __glXGetClientGLExtensionString(); + int size = strlen(ext_str) + 1; + +#ifdef USE_XCB + xcb_connection_t *c = XGetXCBConnection(dpy); + xcb_glx_client_info(c, + GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); +#else + xGLXClientInfoReq *req; + + /* Send the glXClientInfo request */ + LockDisplay(dpy); + GetReq(GLXClientInfo, req); + req->reqType = opcode; + req->glxCode = X_GLXClientInfo; + req->major = GLX_MAJOR_VERSION; + req->minor = GLX_MINOR_VERSION; + + req->length += (size + 3) >> 2; + req->numbytes = size; + Data(dpy, ext_str, size); + + UnlockDisplay(dpy); + SyncHandle(); +#endif /* USE_XCB */ + + Xfree(ext_str); +} + + +/* +** EXT_import_context +*/ + +PUBLIC Display * +glXGetCurrentDisplay(void) +{ + GLXContext gc = __glXGetCurrentContext(); + if (NULL == gc) + return NULL; + return gc->currentDpy; +} + +PUBLIC +GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), + glXGetCurrentDisplay) + +/** + * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests + * to the X-server. + * + * \param dpy Display where \c ctx was created. + * \param ctx Context to query. + * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid, + * or zero if the request failed due to internal problems (i.e., + * unable to allocate temporary memory, etc.) + * + * \note + * This function dynamically determines whether to use the EXT_import_context + * version of the protocol or the GLX 1.3 version of the protocol. + */ +static int __glXQueryContextInfo(Display * dpy, GLXContext ctx) +{ + __GLXdisplayPrivate *priv = __glXInitialize(dpy); + xGLXQueryContextReply reply; + CARD8 opcode; + GLuint numValues; + int retval; + + if (ctx == NULL) { + return GLX_BAD_CONTEXT; + } + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return 0; + } + + /* Send the glXQueryContextInfoEXT request */ + LockDisplay(dpy); + + if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) { + xGLXQueryContextReq *req; + + GetReq(GLXQueryContext, req); + + req->reqType = opcode; + req->glxCode = X_GLXQueryContext; + req->context = (unsigned int) (ctx->xid); + } + else { + xGLXVendorPrivateReq *vpreq; + xGLXQueryContextInfoEXTReq *req; + + GetReqExtra(GLXVendorPrivate, + sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, + vpreq); + req = (xGLXQueryContextInfoEXTReq *) vpreq; + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivateWithReply; + req->vendorCode = X_GLXvop_QueryContextInfoEXT; + req->context = (unsigned int) (ctx->xid); + } + + _XReply(dpy, (xReply *) & reply, 0, False); + + numValues = reply.n; + if (numValues == 0) + retval = Success; + else if (numValues > __GLX_MAX_CONTEXT_PROPS) + retval = 0; + else { + int *propList, *pProp; + int nPropListBytes; + int i; + + nPropListBytes = numValues << 3; + propList = (int *) Xmalloc(nPropListBytes); + if (NULL == propList) { + retval = 0; + } + else { + _XRead(dpy, (char *) propList, nPropListBytes); + pProp = propList; + for (i = 0; i < numValues; i++) { + switch (*pProp++) { + case GLX_SHARE_CONTEXT_EXT: + ctx->share_xid = *pProp++; + break; + case GLX_VISUAL_ID_EXT: + ctx->mode = + _gl_context_modes_find_visual(ctx->psc->visuals, *pProp++); + break; + case GLX_SCREEN: + ctx->screen = *pProp++; + break; + case GLX_FBCONFIG_ID: + ctx->mode = + _gl_context_modes_find_fbconfig(ctx->psc->configs, + *pProp++); + break; + case GLX_RENDER_TYPE: + ctx->renderType = *pProp++; + break; + default: + pProp++; + continue; + } + } + Xfree((char *) propList); + retval = Success; + } + } + UnlockDisplay(dpy); + SyncHandle(); + return retval; +} + +PUBLIC int +glXQueryContext(Display * dpy, GLXContext ctx, int attribute, int *value) +{ + int retVal; + + /* get the information from the server if we don't have it already */ +#ifdef GLX_DIRECT_RENDERING + if (!ctx->driContext && (ctx->mode == NULL)) { +#else + if (ctx->mode == NULL) { +#endif + retVal = __glXQueryContextInfo(dpy, ctx); + if (Success != retVal) + return retVal; + } + switch (attribute) { + case GLX_SHARE_CONTEXT_EXT: + *value = (int) (ctx->share_xid); + break; + case GLX_VISUAL_ID_EXT: + *value = ctx->mode ? ctx->mode->visualID : None; + break; + case GLX_SCREEN: + *value = (int) (ctx->screen); + break; + case GLX_FBCONFIG_ID: + *value = ctx->mode ? ctx->mode->fbconfigID : None; + break; + case GLX_RENDER_TYPE: + *value = (int) (ctx->renderType); + break; + default: + return GLX_BAD_ATTRIBUTE; + } + return Success; +} + +PUBLIC +GLX_ALIAS(int, glXQueryContextInfoEXT, + (Display * dpy, GLXContext ctx, int attribute, int *value), + (dpy, ctx, attribute, value), glXQueryContext) + +PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx) +{ + return ctx->xid; +} + +PUBLIC GLXContext +glXImportContextEXT(Display * dpy, GLXContextID contextID) +{ + GLXContext ctx; + + if (contextID == None) { + return NULL; + } + if (__glXIsDirect(dpy, contextID)) { + return NULL; + } + + ctx = CreateContext(dpy, NULL, NULL, NULL, False, contextID, False, 0); + if (NULL != ctx) { + if (Success != __glXQueryContextInfo(dpy, ctx)) { + return NULL; + } + } + return ctx; +} + +PUBLIC void +glXFreeContextEXT(Display * dpy, GLXContext ctx) +{ + DestroyContext(dpy, ctx); +} + + + +/* + * GLX 1.3 functions - these are just stubs for now! + */ + +PUBLIC GLXFBConfig * +glXChooseFBConfig(Display * dpy, int screen, + const int *attribList, int *nitems) +{ + __GLcontextModes **config_list; + int list_size; + + + config_list = (__GLcontextModes **) + glXGetFBConfigs(dpy, screen, &list_size); + + if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { + list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); + if (list_size == 0) { + XFree(config_list); + config_list = NULL; + } + } + + *nitems = list_size; + return (GLXFBConfig *) config_list; +} + + +PUBLIC GLXContext +glXCreateNewContext(Display * dpy, GLXFBConfig config, + int renderType, GLXContext shareList, Bool allowDirect) +{ + return CreateContext(dpy, NULL, (__GLcontextModes *) config, shareList, + allowDirect, None, True, renderType); +} + + +PUBLIC GLXDrawable +glXGetCurrentReadDrawable(void) +{ + GLXContext gc = __glXGetCurrentContext(); + return gc->currentReadable; +} + + +PUBLIC GLXFBConfig * +glXGetFBConfigs(Display * dpy, int screen, int *nelements) +{ + __GLXdisplayPrivate *priv = __glXInitialize(dpy); + __GLcontextModes **config = NULL; + int i; + + *nelements = 0; + if (priv && (priv->screenConfigs != NULL) + && (screen >= 0) && (screen <= ScreenCount(dpy)) + && (priv->screenConfigs[screen].configs != NULL) + && (priv->screenConfigs[screen].configs->fbconfigID != GLX_DONT_CARE)) { + unsigned num_configs = 0; + __GLcontextModes *modes; + + + for (modes = priv->screenConfigs[screen].configs; modes != NULL; + modes = modes->next) { + if (modes->fbconfigID != GLX_DONT_CARE) { + num_configs++; + } + } + + config = (__GLcontextModes **) Xmalloc(sizeof(__GLcontextModes *) + * num_configs); + if (config != NULL) { + *nelements = num_configs; + i = 0; + for (modes = priv->screenConfigs[screen].configs; modes != NULL; + modes = modes->next) { + if (modes->fbconfigID != GLX_DONT_CARE) { + config[i] = modes; + i++; + } + } + } + } + return (GLXFBConfig *) config; +} + + +PUBLIC int +glXGetFBConfigAttrib(Display * dpy, GLXFBConfig config, + int attribute, int *value) +{ + __GLcontextModes *const modes = ValidateGLXFBConfig(dpy, config); + + return (modes != NULL) + ? _gl_get_context_mode_data(modes, attribute, value) + : GLXBadFBConfig; +} + + +PUBLIC XVisualInfo * +glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig config) +{ + XVisualInfo visualTemplate; + __GLcontextModes *fbconfig = (__GLcontextModes *) config; + int count; + + /* + ** Get a list of all visuals, return if list is empty + */ + visualTemplate.visualid = fbconfig->visualID; + return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); +} + + +/* +** GLX_SGI_swap_control +*/ +static int +__glXSwapIntervalSGI(int interval) +{ + xGLXVendorPrivateReq *req; + GLXContext gc = __glXGetCurrentContext(); + __GLXscreenConfigs *psc; + Display *dpy; + CARD32 *interval_ptr; + CARD8 opcode; + + if (gc == NULL) { + return GLX_BAD_CONTEXT; + } + + if (interval <= 0) { + return GLX_BAD_VALUE; + } + +#ifdef __DRI_SWAP_CONTROL + if (gc->driContext) { + __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy, + gc->screen ); + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, + gc->currentDrawable, + NULL); + if (psc->swapControl != NULL && pdraw != NULL) { + psc->swapControl->setSwapInterval(pdraw->driDrawable, interval); + return 0; + } + else if (pdraw == NULL) { + return GLX_BAD_CONTEXT; + } + } +#endif + psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); + + if (gc->driContext && psc->driScreen && psc->driScreen->setSwapInterval) { + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, + gc->currentDrawable, + NULL); + psc->driScreen->setSwapInterval(pdraw, interval); + return 0; + } + + dpy = gc->currentDpy; + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return 0; + } + + /* Send the glXSwapIntervalSGI request */ + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivate; + req->vendorCode = X_GLXvop_SwapIntervalSGI; + req->contextTag = gc->currentContextTag; + + interval_ptr = (CARD32 *) (req + 1); + *interval_ptr = interval; + + UnlockDisplay(dpy); + SyncHandle(); + XFlush(dpy); + + return 0; +} + + +/* +** GLX_MESA_swap_control +*/ +static int +__glXSwapIntervalMESA(unsigned int interval) +{ + GLXContext gc = __glXGetCurrentContext(); + + if (interval < 0) { + return GLX_BAD_VALUE; + } + +#ifdef __DRI_SWAP_CONTROL + if (gc != NULL && gc->driContext) { + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy, + gc->screen); + + if ((psc != NULL) && (psc->driScreen != NULL)) { + __GLXDRIdrawable *pdraw = + GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); + if (psc->swapControl != NULL && pdraw != NULL) { + psc->swapControl->setSwapInterval(pdraw->driDrawable, interval); + return 0; + } + } + } +#endif + + if (gc != NULL && gc->driContext) { + __GLXscreenConfigs *psc; + + psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); + if (psc->driScreen && psc->driScreen->setSwapInterval) { + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, + gc->currentDrawable, NULL); + psc->driScreen->setSwapInterval(pdraw, interval); + return 0; + } + } + + return GLX_BAD_CONTEXT; +} + + +static int +__glXGetSwapIntervalMESA(void) +{ +#ifdef __DRI_SWAP_CONTROL + GLXContext gc = __glXGetCurrentContext(); + + if (gc != NULL && gc->driContext) { + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy, + gc->screen); + + if ((psc != NULL) && (psc->driScreen != NULL)) { + __GLXDRIdrawable *pdraw = + GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); + if (psc->swapControl != NULL && pdraw != NULL) { + return psc->swapControl->getSwapInterval(pdraw->driDrawable); + } + } + } +#endif + if (gc != NULL && gc->driContext) { + __GLXscreenConfigs *psc; + + psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); + if (psc->driScreen && psc->driScreen->getSwapInterval) { + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, + gc->currentDrawable, NULL); + return psc->driScreen->getSwapInterval(pdraw); + } + } + + return 0; +} + + +/* +** GLX_MESA_swap_frame_usage +*/ + +static GLint +__glXBeginFrameTrackingMESA(Display * dpy, GLXDrawable drawable) +{ + int status = GLX_BAD_CONTEXT; +#ifdef __DRI_FRAME_TRACKING + int screen = 0; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + + if (pdraw != NULL && psc->frameTracking != NULL) + status = psc->frameTracking->frameTracking(pdraw->driDrawable, GL_TRUE); +#else + (void) dpy; + (void) drawable; +#endif + return status; +} + + +static GLint +__glXEndFrameTrackingMESA(Display * dpy, GLXDrawable drawable) +{ + int status = GLX_BAD_CONTEXT; +#ifdef __DRI_FRAME_TRACKING + int screen = 0; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs *psc = GetGLXScreenConfigs(dpy, screen); + + if (pdraw != NULL && psc->frameTracking != NULL) + status = psc->frameTracking->frameTracking(pdraw->driDrawable, + GL_FALSE); +#else + (void) dpy; + (void) drawable; +#endif + return status; +} + + +static GLint +__glXGetFrameUsageMESA(Display * dpy, GLXDrawable drawable, GLfloat * usage) +{ + int status = GLX_BAD_CONTEXT; +#ifdef __DRI_FRAME_TRACKING + int screen = 0; + __GLXDRIdrawable *const pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + + if (pdraw != NULL && psc->frameTracking != NULL) { + int64_t sbc, missedFrames; + float lastMissedUsage; + + status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable, + &sbc, + &missedFrames, + &lastMissedUsage, + usage); + } +#else + (void) dpy; + (void) drawable; + (void) usage; +#endif + return status; +} + + +static GLint +__glXQueryFrameTrackingMESA(Display * dpy, GLXDrawable drawable, + int64_t * sbc, int64_t * missedFrames, + GLfloat * lastMissedUsage) +{ + int status = GLX_BAD_CONTEXT; +#ifdef __DRI_FRAME_TRACKING + int screen = 0; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + + if (pdraw != NULL && psc->frameTracking != NULL) { + float usage; + + status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable, + sbc, missedFrames, + lastMissedUsage, + &usage); + } +#else + (void) dpy; + (void) drawable; + (void) sbc; + (void) missedFrames; + (void) lastMissedUsage; +#endif + return status; +} + + +/* +** GLX_SGI_video_sync +*/ +static int +__glXGetVideoSyncSGI(unsigned int *count) +{ + int64_t ust, msc, sbc; + int ret; + GLXContext gc = __glXGetCurrentContext(); + __GLXscreenConfigs *psc; + __GLXDRIdrawable *pdraw; + + if (!gc || !gc->driContext) + return GLX_BAD_CONTEXT; + + psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); + pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); + + /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, + * FIXME: there should be a GLX encoding for this call. I can find no + * FIXME: documentation for the GLX encoding. + */ +#ifdef __DRI_MEDIA_STREAM_COUNTER + if ( psc->msc && psc->driScreen ) { + ret = (*psc->msc->getDrawableMSC)(psc->__driScreen, + pdraw->driDrawable, &msc); + *count = (unsigned) msc; + + return (ret == 0) ? 0 : GLX_BAD_CONTEXT; + } +#endif + if (psc->driScreen && psc->driScreen->getDrawableMSC) { + ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); + *count = (unsigned) msc; + return (ret == True) ? 0 : GLX_BAD_CONTEXT; + } + + return GLX_BAD_CONTEXT; +} + +static int +__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) +{ + GLXContext gc = __glXGetCurrentContext(); + __GLXscreenConfigs *psc; + __GLXDRIdrawable *pdraw; + int64_t ust, msc, sbc; + int ret; + + if (divisor <= 0 || remainder < 0) + return GLX_BAD_VALUE; + + if (!gc || !gc->driContext) + return GLX_BAD_CONTEXT; + + psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); + pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); + +#ifdef __DRI_MEDIA_STREAM_COUNTER + if (psc->msc != NULL && psc->driScreen ) { + ret = (*psc->msc->waitForMSC)(pdraw->driDrawable, 0, + divisor, remainder, &msc, &sbc); + *count = (unsigned) msc; + return (ret == 0) ? 0 : GLX_BAD_CONTEXT; + } +#endif + if (psc->driScreen && psc->driScreen->waitForMSC) { + ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, + &sbc); + *count = (unsigned) msc; + return (ret == True) ? 0 : GLX_BAD_CONTEXT; + } + + return GLX_BAD_CONTEXT; +} + + +/* +** GLX_SGIX_fbconfig +** Many of these functions are aliased to GLX 1.3 entry points in the +** GLX_functions table. +*/ + +PUBLIC +GLX_ALIAS(int, glXGetFBConfigAttribSGIX, + (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), + (dpy, config, attribute, value), glXGetFBConfigAttrib) + +PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, + (Display * dpy, int screen, int *attrib_list, + int *nelements), (dpy, screen, attrib_list, nelements), + glXChooseFBConfig) + +PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, + (Display * dpy, GLXFBConfigSGIX config), + (dpy, config), glXGetVisualFromFBConfig) + +PUBLIC GLXPixmap +glXCreateGLXPixmapWithConfigSGIX(Display * dpy, + GLXFBConfigSGIX config, + Pixmap pixmap) +{ + xGLXVendorPrivateWithReplyReq *vpreq; + xGLXCreateGLXPixmapWithConfigSGIXReq *req; + GLXPixmap xid = None; + CARD8 opcode; + const __GLcontextModes *const fbconfig = (__GLcontextModes *) config; + __GLXscreenConfigs *psc; + + + if ((dpy == NULL) || (config == NULL)) { + return None; + } + + psc = GetGLXScreenConfigs(dpy, fbconfig->screen); + if ((psc != NULL) + && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { + opcode = __glXSetupForCommand(dpy); + if (!opcode) { + return None; + } + + /* Send the glXCreateGLXPixmapWithConfigSGIX request */ + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivateWithReply, + sz_xGLXCreateGLXPixmapWithConfigSGIXReq - + sz_xGLXVendorPrivateWithReplyReq, vpreq); + req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivateWithReply; + req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; + req->screen = fbconfig->screen; + req->fbconfig = fbconfig->fbconfigID; + req->pixmap = pixmap; + req->glxpixmap = xid = XAllocID(dpy); + UnlockDisplay(dpy); + SyncHandle(); + } + + return xid; +} + +PUBLIC GLXContext +glXCreateContextWithConfigSGIX(Display * dpy, + GLXFBConfigSGIX config, int renderType, + GLXContext shareList, Bool allowDirect) +{ + GLXContext gc = NULL; + const __GLcontextModes *const fbconfig = (__GLcontextModes *) config; + __GLXscreenConfigs *psc; + + + if ((dpy == NULL) || (config == NULL)) { + return None; + } + + psc = GetGLXScreenConfigs(dpy, fbconfig->screen); + if ((psc != NULL) + && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { + gc = CreateContext(dpy, NULL, (__GLcontextModes *) config, shareList, + allowDirect, None, False, renderType); + } + + return gc; +} + + +PUBLIC GLXFBConfigSGIX +glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) +{ + __GLXdisplayPrivate *priv; + __GLXscreenConfigs *psc = NULL; + + if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) != Success) + && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) + && (psc->configs->fbconfigID != GLX_DONT_CARE)) { + return (GLXFBConfigSGIX) _gl_context_modes_find_visual(psc->configs, + vis->visualid); + } + + return NULL; +} + + +/* +** GLX_SGIX_swap_group +*/ +static void +__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, + GLXDrawable member) +{ + (void) dpy; + (void) drawable; + (void) member; +} + + +/* +** GLX_SGIX_swap_barrier +*/ +static void +__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) +{ + (void) dpy; + (void) drawable; + (void) barrier; +} + +static Bool +__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) +{ + (void) dpy; + (void) screen; + (void) max; + return False; +} + + +/* +** GLX_OML_sync_control +*/ +static Bool +__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, + int64_t * ust, int64_t * msc, int64_t * sbc) +{ + __GLXdisplayPrivate * const priv = __glXInitialize(dpy); + int i, ret; + __GLXDRIdrawable *pdraw; + __GLXscreenConfigs *psc; + + if (!priv) + return False; + + pdraw = GetGLXDRIDrawable(dpy, drawable, &i); + psc = &priv->screenConfigs[i]; + +#if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER) + if (pdraw && psc->sbc && psc->sbc) + return ( (pdraw && psc->sbc && psc->msc) + && ((*psc->msc->getMSC)(psc->driScreen, msc) == 0) + && ((*psc->sbc->getSBC)(pdraw->driDrawable, sbc) == 0) + && (__glXGetUST(ust) == 0) ); +#endif + if (pdraw && psc && psc->driScreen && psc->driScreen->getDrawableMSC) { + ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); + return ret; + } + + return False; +} + +#ifdef GLX_DIRECT_RENDERING +_X_HIDDEN GLboolean +__driGetMscRateOML(__DRIdrawable * draw, + int32_t * numerator, int32_t * denominator, void *private) +{ +#ifdef XF86VIDMODE + __GLXscreenConfigs *psc; + XF86VidModeModeLine mode_line; + int dot_clock; + int i; + __GLXDRIdrawable *glxDraw = private; + + psc = glxDraw->psc; + if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && + XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { + unsigned n = dot_clock * 1000; + unsigned d = mode_line.vtotal * mode_line.htotal; + +# define V_INTERLACE 0x010 +# define V_DBLSCAN 0x020 + + if (mode_line.flags & V_INTERLACE) + n *= 2; + else if (mode_line.flags & V_DBLSCAN) + d *= 2; + + /* The OML_sync_control spec requires that if the refresh rate is a + * whole number, that the returned numerator be equal to the refresh + * rate and the denominator be 1. + */ + + if (n % d == 0) { + n /= d; + d = 1; + } + else { + static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; + + /* This is a poor man's way to reduce a fraction. It's far from + * perfect, but it will work well enough for this situation. + */ + + for (i = 0; f[i] != 0; i++) { + while (n % f[i] == 0 && d % f[i] == 0) { + d /= f[i]; + n /= f[i]; + } + } + } + + *numerator = n; + *denominator = d; + + return True; + } + else + return False; +#else + return False; +#endif +} +#endif + +/** + * Determine the refresh rate of the specified drawable and display. + * + * \param dpy Display whose refresh rate is to be determined. + * \param drawable Drawable whose refresh rate is to be determined. + * \param numerator Numerator of the refresh rate. + * \param demoninator Denominator of the refresh rate. + * \return If the refresh rate for the specified display and drawable could + * be calculated, True is returned. Otherwise False is returned. + * + * \note This function is implemented entirely client-side. A lot of other + * functionality is required to export GLX_OML_sync_control, so on + * XFree86 this function can be called for direct-rendering contexts + * when GLX_OML_sync_control appears in the client extension string. + */ + +_X_HIDDEN GLboolean +__glXGetMscRateOML(Display * dpy, GLXDrawable drawable, + int32_t * numerator, int32_t * denominator) +{ +#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) + __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable, NULL); + + if (draw == NULL) + return False; + + return __driGetMscRateOML(draw->driDrawable, numerator, denominator, draw); +#else + (void) dpy; + (void) drawable; + (void) numerator; + (void) denominator; +#endif + return False; +} + + +static int64_t +__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, + int64_t target_msc, int64_t divisor, int64_t remainder) +{ + GLXContext gc = __glXGetCurrentContext(); + int screen; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + + if (!pdraw || !gc->driContext) /* no GLX for this */ + return -1; + + /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE + * error", but it also says "It [glXSwapBuffersMscOML] will return a value + * of -1 if the function failed because of errors detected in the input + * parameters" + */ + if (divisor < 0 || remainder < 0 || target_msc < 0) + return -1; + if (divisor > 0 && remainder >= divisor) + return -1; + +#ifdef __DRI_SWAP_BUFFER_COUNTER + if (psc->counters != NULL) + return (*psc->sbc->swapBuffersMSC)(pdraw->driDrawable, target_msc, + divisor, remainder); +#endif + +#ifdef GLX_DIRECT_RENDERING + if (psc->driScreen && psc->driScreen->swapBuffers) + return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, + remainder); +#endif + + return -1; +} + + +static Bool +__glXWaitForMscOML(Display * dpy, GLXDrawable drawable, + int64_t target_msc, int64_t divisor, + int64_t remainder, int64_t * ust, + int64_t * msc, int64_t * sbc) +{ + int screen; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen ); + int ret; + + fprintf(stderr, "waitmsc: %lld, %lld, %lld\n", target_msc, divisor, + remainder); + + /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE + * error", but the return type in the spec is Bool. + */ + if (divisor < 0 || remainder < 0 || target_msc < 0) + return False; + if (divisor > 0 && remainder >= divisor) + return False; + +#ifdef __DRI_MEDIA_STREAM_COUNTER + if (pdraw != NULL && psc->msc != NULL) { + fprintf(stderr, "dri1 msc\n"); + ret = (*psc->msc->waitForMSC) (pdraw->driDrawable, target_msc, + divisor, remainder, msc, sbc); + + /* __glXGetUST returns zero on success and non-zero on failure. + * This function returns True on success and False on failure. + */ + return ((ret == 0) && (__glXGetUST(ust) == 0)); + } +#endif + if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { + ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, + ust, msc, sbc); + return ret; + } + + fprintf(stderr, "no drawable??\n"); + return False; +} + + +static Bool +__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, + int64_t target_sbc, int64_t * ust, + int64_t * msc, int64_t * sbc) +{ + int screen; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + int ret; + + /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE + * error", but the return type in the spec is Bool. + */ + if (target_sbc < 0) + return False; +#ifdef __DRI_SWAP_BUFFER_COUNTER + if (pdraw != NULL && psc->sbc != NULL) { + ret = + (*psc->sbc->waitForSBC) (pdraw->driDrawable, target_sbc, msc, sbc); + + /* __glXGetUST returns zero on success and non-zero on failure. + * This function returns True on success and False on failure. + */ + return ((ret == 0) && (__glXGetUST(ust) == 0)); + } +#endif + if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { + ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); + return ret; + } + return False; +} + + +/** + * GLX_MESA_allocate_memory + */ +/*@{*/ + +PUBLIC void * +glXAllocateMemoryMESA(Display * dpy, int scrn, + size_t size, float readFreq, + float writeFreq, float priority) +{ +#ifdef __DRI_ALLOCATE + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn); + + if (psc && psc->allocate) + return (*psc->allocate->allocateMemory) (psc->__driScreen, size, + readFreq, writeFreq, priority); + +#else + (void) dpy; + (void) scrn; + (void) size; + (void) readFreq; + (void) writeFreq; + (void) priority; +#endif /* __DRI_ALLOCATE */ + + return NULL; +} + + +PUBLIC void +glXFreeMemoryMESA(Display * dpy, int scrn, void *pointer) +{ +#ifdef __DRI_ALLOCATE + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn); + + if (psc && psc->allocate) + (*psc->allocate->freeMemory) (psc->__driScreen, pointer); + +#else + (void) dpy; + (void) scrn; + (void) pointer; +#endif /* __DRI_ALLOCATE */ +} + + +PUBLIC GLuint +glXGetMemoryOffsetMESA(Display * dpy, int scrn, const void *pointer) +{ +#ifdef __DRI_ALLOCATE + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn); + + if (psc && psc->allocate) + return (*psc->allocate->memoryOffset) (psc->__driScreen, pointer); + +#else + (void) dpy; + (void) scrn; + (void) pointer; +#endif /* GLX_DIRECT_RENDERING */ + + return ~0L; +} + +/*@}*/ + + +/** + * Mesa extension stubs. These will help reduce portability problems. + */ +/*@{*/ + +/** + * Release all buffers associated with the specified GLX drawable. + * + * \todo + * This function was intended for stand-alone Mesa. The issue there is that + * the library doesn't get any notification when a window is closed. In + * DRI there is a similar but slightly different issue. When GLX 1.3 is + * supported, there are 3 different functions to destroy a drawable. It + * should be possible to create GLX protocol (or have it determine which + * protocol to use based on the type of the drawable) to have one function + * do the work of 3. For the direct-rendering case, this function could + * just call the driver's \c __DRIdrawableRec::destroyDrawable function. + * This would reduce the frequency with which \c __driGarbageCollectDrawables + * would need to be used. This really should be done as part of the new DRI + * interface work. + * + * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt + * __driGarbageCollectDrawables + * glXDestroyGLXPixmap + * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow + * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX + */ +static Bool +__glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) +{ + (void) dpy; + (void) d; + return False; +} + + +PUBLIC GLXPixmap +glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, + Pixmap pixmap, Colormap cmap) +{ + (void) dpy; + (void) visual; + (void) pixmap; + (void) cmap; + return 0; +} + +/*@}*/ + + +/** + * GLX_MESA_copy_sub_buffer + */ +#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ +static void +__glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, + int x, int y, int width, int height) +{ + xGLXVendorPrivateReq *req; + GLXContext gc; + GLXContextTag tag; + CARD32 *drawable_ptr; + INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; + CARD8 opcode; + +#ifdef __DRI_COPY_SUB_BUFFER + int screen; + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); + if (pdraw != NULL) { + __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); + if (psc->driScreen->copySubBuffer != NULL) { + glFlush(); + (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); + } + + return; + } +#endif + + opcode = __glXSetupForCommand(dpy); + if (!opcode) + return; + + /* + ** The calling thread may or may not have a current context. If it + ** does, send the context tag so the server can do a flush. + */ + gc = __glXGetCurrentContext(); + if ((gc != NULL) && (dpy == gc->currentDpy) && + ((drawable == gc->currentDrawable) || + (drawable == gc->currentReadable))) { + tag = gc->currentContextTag; + } + else { + tag = 0; + } + + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivate; + req->vendorCode = X_GLXvop_CopySubBufferMESA; + req->contextTag = tag; + + drawable_ptr = (CARD32 *) (req + 1); + x_ptr = (INT32 *) (drawable_ptr + 1); + y_ptr = (INT32 *) (drawable_ptr + 2); + w_ptr = (INT32 *) (drawable_ptr + 3); + h_ptr = (INT32 *) (drawable_ptr + 4); + + *drawable_ptr = drawable; + *x_ptr = x; + *y_ptr = y; + *w_ptr = width; + *h_ptr = height; + + UnlockDisplay(dpy); + SyncHandle(); +} + + +/** + * GLX_EXT_texture_from_pixmap + */ +/*@{*/ +static void +__glXBindTexImageEXT(Display * dpy, + GLXDrawable drawable, int buffer, const int *attrib_list) +{ + xGLXVendorPrivateReq *req; + GLXContext gc = __glXGetCurrentContext(); + CARD32 *drawable_ptr; + INT32 *buffer_ptr; + CARD32 *num_attrib_ptr; + CARD32 *attrib_ptr; + CARD8 opcode; + unsigned int i; + + if (gc == NULL) + return; + + i = 0; + if (attrib_list) { + while (attrib_list[i * 2] != None) + i++; + } + +#ifdef GLX_DIRECT_RENDERING + if (gc->driContext) { + __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL); + + if (pdraw != NULL) { + if (pdraw->psc->texBuffer->base.version >= 2 && + pdraw->psc->texBuffer->setTexBuffer2 != NULL) { + (*pdraw->psc->texBuffer->setTexBuffer2) (gc->__driContext, + pdraw->textureTarget, + pdraw->textureFormat, + pdraw->driDrawable); + } + else { + (*pdraw->psc->texBuffer->setTexBuffer) (gc->__driContext, + pdraw->textureTarget, + pdraw->driDrawable); + } + } + return; + } +#endif + + opcode = __glXSetupForCommand(dpy); + if (!opcode) + return; + + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req); + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivate; + req->vendorCode = X_GLXvop_BindTexImageEXT; + req->contextTag = gc->currentContextTag; + + drawable_ptr = (CARD32 *) (req + 1); + buffer_ptr = (INT32 *) (drawable_ptr + 1); + num_attrib_ptr = (CARD32 *) (buffer_ptr + 1); + attrib_ptr = (CARD32 *) (num_attrib_ptr + 1); + + *drawable_ptr = drawable; + *buffer_ptr = buffer; + *num_attrib_ptr = (CARD32) i; + + i = 0; + if (attrib_list) { + while (attrib_list[i * 2] != None) { + *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0]; + *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1]; + i++; + } + } + + UnlockDisplay(dpy); + SyncHandle(); +} + +static void +__glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) +{ + xGLXVendorPrivateReq *req; + GLXContext gc = __glXGetCurrentContext(); + CARD32 *drawable_ptr; + INT32 *buffer_ptr; + CARD8 opcode; + + if (gc == NULL) + return; + +#ifdef GLX_DIRECT_RENDERING + if (gc->driContext) + return; +#endif + + opcode = __glXSetupForCommand(dpy); + if (!opcode) + return; + + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req); + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivate; + req->vendorCode = X_GLXvop_ReleaseTexImageEXT; + req->contextTag = gc->currentContextTag; + + drawable_ptr = (CARD32 *) (req + 1); + buffer_ptr = (INT32 *) (drawable_ptr + 1); + + *drawable_ptr = drawable; + *buffer_ptr = buffer; + + UnlockDisplay(dpy); + SyncHandle(); +} + +/*@}*/ + +/** + * \c strdup is actually not a standard ANSI C or POSIX routine. + * Irix will not define it if ANSI mode is in effect. + * + * \sa strdup + */ +_X_HIDDEN char * +__glXstrdup(const char *str) +{ + char *copy; + copy = (char *) Xmalloc(strlen(str) + 1); + if (!copy) + return NULL; + strcpy(copy, str); + return copy; +} + +/* +** glXGetProcAddress support +*/ + +struct name_address_pair +{ + const char *Name; + GLvoid *Address; +}; + +#define GLX_FUNCTION(f) { # f, (GLvoid *) f } +#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } + +static const struct name_address_pair GLX_functions[] = { + /*** GLX_VERSION_1_0 ***/ + GLX_FUNCTION(glXChooseVisual), + GLX_FUNCTION(glXCopyContext), + GLX_FUNCTION(glXCreateContext), + GLX_FUNCTION(glXCreateGLXPixmap), + GLX_FUNCTION(glXDestroyContext), + GLX_FUNCTION(glXDestroyGLXPixmap), + GLX_FUNCTION(glXGetConfig), + GLX_FUNCTION(glXGetCurrentContext), + GLX_FUNCTION(glXGetCurrentDrawable), + GLX_FUNCTION(glXIsDirect), + GLX_FUNCTION(glXMakeCurrent), + GLX_FUNCTION(glXQueryExtension), + GLX_FUNCTION(glXQueryVersion), + GLX_FUNCTION(glXSwapBuffers), + GLX_FUNCTION(glXUseXFont), + GLX_FUNCTION(glXWaitGL), + GLX_FUNCTION(glXWaitX), + + /*** GLX_VERSION_1_1 ***/ + GLX_FUNCTION(glXGetClientString), + GLX_FUNCTION(glXQueryExtensionsString), + GLX_FUNCTION(glXQueryServerString), + + /*** GLX_VERSION_1_2 ***/ + GLX_FUNCTION(glXGetCurrentDisplay), + + /*** GLX_VERSION_1_3 ***/ + GLX_FUNCTION(glXChooseFBConfig), + GLX_FUNCTION(glXCreateNewContext), + GLX_FUNCTION(glXCreatePbuffer), + GLX_FUNCTION(glXCreatePixmap), + GLX_FUNCTION(glXCreateWindow), + GLX_FUNCTION(glXDestroyPbuffer), + GLX_FUNCTION(glXDestroyPixmap), + GLX_FUNCTION(glXDestroyWindow), + GLX_FUNCTION(glXGetCurrentReadDrawable), + GLX_FUNCTION(glXGetFBConfigAttrib), + GLX_FUNCTION(glXGetFBConfigs), + GLX_FUNCTION(glXGetSelectedEvent), + GLX_FUNCTION(glXGetVisualFromFBConfig), + GLX_FUNCTION(glXMakeContextCurrent), + GLX_FUNCTION(glXQueryContext), + GLX_FUNCTION(glXQueryDrawable), + GLX_FUNCTION(glXSelectEvent), + + /*** GLX_SGI_swap_control ***/ + GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), + + /*** GLX_SGI_video_sync ***/ + GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), + GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), + + /*** GLX_SGI_make_current_read ***/ + GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), + GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), + + /*** GLX_EXT_import_context ***/ + GLX_FUNCTION(glXFreeContextEXT), + GLX_FUNCTION(glXGetContextIDEXT), + GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), + GLX_FUNCTION(glXImportContextEXT), + GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), + + /*** GLX_SGIX_fbconfig ***/ + GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), + GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), + GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), + GLX_FUNCTION(glXCreateContextWithConfigSGIX), + GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), + GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), + + /*** GLX_SGIX_pbuffer ***/ + GLX_FUNCTION(glXCreateGLXPbufferSGIX), + GLX_FUNCTION(glXDestroyGLXPbufferSGIX), + GLX_FUNCTION(glXQueryGLXPbufferSGIX), + GLX_FUNCTION(glXSelectEventSGIX), + GLX_FUNCTION(glXGetSelectedEventSGIX), + + /*** GLX_SGIX_swap_group ***/ + GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), + + /*** GLX_SGIX_swap_barrier ***/ + GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), + GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), + + /*** GLX_MESA_allocate_memory ***/ + GLX_FUNCTION(glXAllocateMemoryMESA), + GLX_FUNCTION(glXFreeMemoryMESA), + GLX_FUNCTION(glXGetMemoryOffsetMESA), + + /*** GLX_MESA_copy_sub_buffer ***/ + GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), + + /*** GLX_MESA_pixmap_colormap ***/ + GLX_FUNCTION(glXCreateGLXPixmapMESA), + + /*** GLX_MESA_release_buffers ***/ + GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), + + /*** GLX_MESA_swap_control ***/ + GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), + GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), + + /*** GLX_MESA_swap_frame_usage ***/ + GLX_FUNCTION2(glXBeginFrameTrackingMESA, __glXBeginFrameTrackingMESA), + GLX_FUNCTION2(glXEndFrameTrackingMESA, __glXEndFrameTrackingMESA), + GLX_FUNCTION2(glXGetFrameUsageMESA, __glXGetFrameUsageMESA), + GLX_FUNCTION2(glXQueryFrameTrackingMESA, __glXQueryFrameTrackingMESA), + + /*** GLX_ARB_get_proc_address ***/ + GLX_FUNCTION(glXGetProcAddressARB), + + /*** GLX 1.4 ***/ + GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), + + /*** GLX_OML_sync_control ***/ + GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), + GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), + GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), + GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), + GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), + + /*** GLX_EXT_texture_from_pixmap ***/ + GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), + GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), + +#ifdef GLX_DIRECT_RENDERING + /*** DRI configuration ***/ + GLX_FUNCTION(glXGetScreenDriver), + GLX_FUNCTION(glXGetDriverConfig), +#endif + + {NULL, NULL} /* end of list */ +}; + + +static const GLvoid * +get_glx_proc_address(const char *funcName) +{ + GLuint i; + + /* try static functions */ + for (i = 0; GLX_functions[i].Name; i++) { + if (strcmp(GLX_functions[i].Name, funcName) == 0) + return GLX_functions[i].Address; + } + + return NULL; +} + + +/** + * Get the address of a named GL function. This is the pre-GLX 1.4 name for + * \c glXGetProcAddress. + * + * \param procName Name of a GL or GLX function. + * \returns A pointer to the named function + * + * \sa glXGetProcAddress + */ +PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void) +{ + typedef void (*gl_function) (void); + gl_function f; + + + /* Search the table of GLX and internal functions first. If that + * fails and the supplied name could be a valid core GL name, try + * searching the core GL function table. This check is done to prevent + * DRI based drivers from searching the core GL function table for + * internal API functions. + */ + + f = (gl_function) get_glx_proc_address((const char *) procName); + if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') + && (procName[2] != 'X')) { + f = (gl_function) _glapi_get_proc_address((const char *) procName); + } + + return f; +} + +/** + * Get the address of a named GL function. This is the GLX 1.4 name for + * \c glXGetProcAddressARB. + * + * \param procName Name of a GL or GLX function. + * \returns A pointer to the named function + * + * \sa glXGetProcAddressARB + */ +PUBLIC void (*glXGetProcAddress(const GLubyte * procName)) (void) +#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) + __attribute__ ((alias("glXGetProcAddressARB"))); +#else +{ + return glXGetProcAddressARB(procName); +} +#endif /* __GNUC__ */ + + +#ifdef GLX_DIRECT_RENDERING +/** + * Get the unadjusted system time (UST). Currently, the UST is measured in + * microseconds since Epoc. The actual resolution of the UST may vary from + * system to system, and the units may vary from release to release. + * Drivers should not call this function directly. They should instead use + * \c glXGetProcAddress to obtain a pointer to the function. + * + * \param ust Location to store the 64-bit UST + * \returns Zero on success or a negative errno value on failure. + * + * \sa glXGetProcAddress, PFNGLXGETUSTPROC + * + * \since Internal API version 20030317. + */ +_X_HIDDEN int +__glXGetUST(int64_t * ust) +{ + struct timeval tv; + + if (ust == NULL) { + return -EFAULT; + } + + if (gettimeofday(&tv, NULL) == 0) { + ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; + return 0; + } + else { + return -errno; + } +} +#endif /* GLX_DIRECT_RENDERING */ |