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Diffstat (limited to 'src/glx/mini/miniglx.c')
| -rw-r--r-- | src/glx/mini/miniglx.c | 2580 |
1 files changed, 0 insertions, 2580 deletions
diff --git a/src/glx/mini/miniglx.c b/src/glx/mini/miniglx.c deleted file mode 100644 index e9a10b4ac73..00000000000 --- a/src/glx/mini/miniglx.c +++ /dev/null @@ -1,2580 +0,0 @@ -/** - * \file miniglx.c - * \brief Mini GLX interface functions. - * \author Brian Paul - * - * The Mini GLX interface is a subset of the GLX interface, plus a - * minimal set of Xlib functions. - */ - -/* - * Mesa 3-D graphics library - * Version: 6.0.1 - * - * Copyright (C) 1999-2004 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 - * BRIAN PAUL 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. - */ - - -/** - * \mainpage Mini GLX - * - * \section miniglxIntro Introduction - * - * The Mini GLX interface facilitates OpenGL rendering on embedded devices. The - * interface is a subset of the GLX interface, plus a minimal set of Xlib-like - * functions. - * - * Programs written to the Mini GLX specification should run unchanged - * on systems with the X Window System and the GLX extension (after - * recompilation). The intention is to allow flexibility for - * prototyping and testing. - * - * The files in the src/miniglx/ directory are compiled to build the - * libGL.so library. This is the library which applications link with. - * libGL.so in turn, loads the hardware-specific device driver. - * - * - * \section miniglxDoxygen About Doxygen - * - * For a list of all files, select <b>File List</b>. Choose a file from - * the list for a list of all functions in the file. - * - * For a list of all functions, types, constants, etc. - * select <b>File Members</b>. - * - * - * \section miniglxReferences References - * - * - <A HREF="file:../../docs/MiniGLX.html">Mini GLX Specification</A>, - * Tungsten Graphics, Inc. - * - OpenGL Graphics with the X Window System, Silicon Graphics, Inc., - * ftp://ftp.sgi.com/opengl/doc/opengl1.2/glx1.3.ps - * - Xlib - C Language X Interface, X Consortium Standard, X Version 11, - * Release 6.4, ftp://ftp.x.org/pub/R6.4/xc/doc/hardcopy/X11/xlib.PS.gz - * - XFree86 Man pages, The XFree86 Project, Inc., - * http://www.xfree86.org/current/manindex3.html - * - */ - -/** - * \page datatypes Notes on the XVisualInfo, Visual, and __GLXvisualConfig data types - * - * -# X (unfortunately) has two (or three) data types which - * describe visuals. Ideally, there would just be one. - * -# We need the #__GLXvisualConfig type to augment #XVisualInfo and #Visual - * because we need to describe the GLX-specific attributes of visuals. - * -# In this interface there is a one-to-one-to-one correspondence between - * the three types and they're all interconnected. - * -# The #XVisualInfo type has a pointer to a #Visual. The #Visual structure - * (aka MiniGLXVisualRec) has a pointer to the #__GLXvisualConfig. The - * #Visual structure also has a pointer pointing back to the #XVisualInfo. - * -# The #XVisualInfo structure is the only one who's contents are public. - * -# The glXChooseVisual() and XGetVisualInfo() are the only functions that - * return #XVisualInfo structures. They can be freed with XFree(), though - * there is a small memory leak. - */ - - -#include <assert.h> -#include <errno.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <dlfcn.h> -#include <fcntl.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <sys/types.h> -#include <sys/time.h> /* for gettimeofday */ -#include <linux/kd.h> -#include <linux/vt.h> - -#include "miniglxP.h" -#include "dri_util.h" - -#include "imports.h" -#include "glcontextmodes.h" -#include "glapi.h" - -#include "pciaccess.h" - -static GLboolean __glXCreateContextWithConfig(__DRInativeDisplay *dpy, - int screen, int fbconfigID, void *contextID, - drm_context_t *hHWContext); - -static GLboolean __glXGetDrawableInfo(__DRInativeDisplay *dpy, int scrn, - __DRIid draw, unsigned int * index, unsigned int * stamp, - int * x, int * y, int * width, int * height, - int * numClipRects, drm_clip_rect_t ** pClipRects, - int * backX, int * backY, - int * numBackClipRects, drm_clip_rect_t ** pBackClipRects); - -static __DRIscreen * __glXFindDRIScreen(__DRInativeDisplay *dpy, int scrn); - -static GLboolean __glXWindowExists(__DRInativeDisplay *dpy, __DRIid draw); - -static int __glXGetUST( int64_t * ust ); - -static GLboolean __glXGetMscRate(__DRInativeDisplay * dpy, __DRIid drawable, - int32_t * numerator, int32_t * denominator); - -static GLboolean xf86DRI_DestroyContext(__DRInativeDisplay *dpy, int screen, - __DRIid context_id ); - -static GLboolean xf86DRI_CreateDrawable(__DRInativeDisplay *dpy, int screen, - __DRIid drawable, drm_drawable_t *hHWDrawable ); - -static GLboolean xf86DRI_DestroyDrawable(__DRInativeDisplay *dpy, int screen, - __DRIid drawable); - - -/** Wrapper around either malloc() */ -void * -_mesa_malloc(size_t bytes) -{ - return malloc(bytes); -} - -/** Wrapper around either calloc() */ -void * -_mesa_calloc(size_t bytes) -{ - return calloc(1, bytes); -} - -/** Wrapper around either free() */ -void -_mesa_free(void *ptr) -{ - free(ptr); -} - - -/** - * \brief Current GLX context. - * - * \sa glXGetCurrentContext(). - */ -static GLXContext CurrentContext = NULL; - - - -static Display *SignalDisplay = 0; - -static void SwitchVT(int sig) -{ - fprintf(stderr, "SwitchVT %d dpy %p\n", sig, SignalDisplay); - - if (SignalDisplay) { - SignalDisplay->vtSignalFlag = 1; - switch( sig ) - { - case SIGUSR1: /* vt has been released */ - SignalDisplay->haveVT = 0; - break; - case SIGUSR2: /* vt has been acquired */ - SignalDisplay->haveVT = 1; - break; - } - } -} - -/**********************************************************************/ -/** \name Framebuffer device functions */ -/**********************************************************************/ -/*@{*/ - -/** - * \brief Do the first part of setting up the framebuffer device. - * - * \param dpy the display handle. - * \param use_vt use a VT for display or not - * - * \return GL_TRUE on success, or GL_FALSE on failure. - * - * \sa This is called during XOpenDisplay(). - * - * \internal - * Gets the VT number, opens the respective console TTY device. Saves its state - * to restore when exiting and goes into graphics mode. - * - * Opens the framebuffer device and make a copy of the original variable screen - * information and gets the fixed screen information. Maps the framebuffer and - * MMIO region into the process address space. - */ -static GLboolean -OpenFBDev( Display *dpy, int use_vt ) -{ - char ttystr[1000]; - int fd, vtnumber, ttyfd; - - assert(dpy); - - if (geteuid()) { - fprintf(stderr, "error: you need to be root\n"); - return GL_FALSE; - } - - if (use_vt) { - - /* open /dev/tty0 and get the VT number */ - if ((fd = open("/dev/tty0", O_WRONLY, 0)) < 0) { - fprintf(stderr, "error opening /dev/tty0\n"); - return GL_FALSE; - } - if (ioctl(fd, VT_OPENQRY, &vtnumber) < 0 || vtnumber < 0) { - fprintf(stderr, "error: couldn't get a free vt\n"); - return GL_FALSE; - } - - fprintf(stderr, "*** got vt nr: %d\n", vtnumber); - close(fd); - - /* open the console tty */ - sprintf(ttystr, "/dev/tty%d", vtnumber); /* /dev/tty1-64 */ - dpy->ConsoleFD = open(ttystr, O_RDWR | O_NDELAY, 0); - if (dpy->ConsoleFD < 0) { - fprintf(stderr, "error couldn't open console fd\n"); - return GL_FALSE; - } - - /* save current vt number */ - { - struct vt_stat vts; - if (ioctl(dpy->ConsoleFD, VT_GETSTATE, &vts) == 0) - dpy->OriginalVT = vts.v_active; - } - - /* disconnect from controlling tty */ - ttyfd = open("/dev/tty", O_RDWR); - if (ttyfd >= 0) { - ioctl(ttyfd, TIOCNOTTY, 0); - close(ttyfd); - } - - /* some magic to restore the vt when we exit */ - { - struct vt_mode vt; - struct sigaction sig_tty; - - /* Set-up tty signal handler to catch the signal we request below */ - SignalDisplay = dpy; - memset( &sig_tty, 0, sizeof( sig_tty ) ); - sig_tty.sa_handler = SwitchVT; - sigemptyset( &sig_tty.sa_mask ); - if( sigaction( SIGUSR1, &sig_tty, &dpy->OrigSigUsr1 ) || - sigaction( SIGUSR2, &sig_tty, &dpy->OrigSigUsr2 ) ) - { - fprintf(stderr, "error: can't set up signal handler (%s)", - strerror(errno) ); - return GL_FALSE; - } - - - - vt.mode = VT_PROCESS; - vt.waitv = 0; - vt.relsig = SIGUSR1; - vt.acqsig = SIGUSR2; - if (ioctl(dpy->ConsoleFD, VT_SETMODE, &vt) < 0) { - fprintf(stderr, "error: ioctl(VT_SETMODE) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - - if (ioctl(dpy->ConsoleFD, VT_ACTIVATE, vtnumber) != 0) - printf("ioctl VT_ACTIVATE: %s\n", strerror(errno)); - if (ioctl(dpy->ConsoleFD, VT_WAITACTIVE, vtnumber) != 0) - printf("ioctl VT_WAITACTIVE: %s\n", strerror(errno)); - - if (ioctl(dpy->ConsoleFD, VT_GETMODE, &vt) < 0) { - fprintf(stderr, "error: ioctl VT_GETMODE: %s\n", strerror(errno)); - return GL_FALSE; - } - - - - } - - /* go into graphics mode */ - if (ioctl(dpy->ConsoleFD, KDSETMODE, KD_GRAPHICS) < 0) { - fprintf(stderr, "error: ioctl(KDSETMODE, KD_GRAPHICS) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - } - - /* open the framebuffer device */ - dpy->FrameBufferFD = open(dpy->fbdevDevice, O_RDWR); - if (dpy->FrameBufferFD < 0) { - fprintf(stderr, "Error opening /dev/fb0: %s\n", strerror(errno)); - return GL_FALSE; - } - - /* get the original variable screen info */ - if (ioctl(dpy->FrameBufferFD, FBIOGET_VSCREENINFO, &dpy->OrigVarInfo)) { - fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - /* make copy */ - dpy->VarInfo = dpy->OrigVarInfo; /* structure copy */ - - /* Turn off hw accels (otherwise mmap of mmio region will be - * refused) - */ - dpy->VarInfo.accel_flags = 0; - if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->VarInfo)) { - fprintf(stderr, "error: ioctl(FBIOPUT_VSCREENINFO) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - - - /* Get the fixed screen info */ - if (ioctl(dpy->FrameBufferFD, FBIOGET_FSCREENINFO, &dpy->FixedInfo)) { - fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - - - /* mmap the framebuffer into our address space */ - dpy->driverContext.FBStart = dpy->FixedInfo.smem_start; - dpy->driverContext.FBSize = dpy->FixedInfo.smem_len; - dpy->driverContext.shared.fbSize = dpy->FixedInfo.smem_len; - dpy->driverContext.FBAddress = (caddr_t) mmap(0, /* start */ - dpy->driverContext.shared.fbSize, /* bytes */ - PROT_READ | PROT_WRITE, /* prot */ - MAP_SHARED, /* flags */ - dpy->FrameBufferFD, /* fd */ - 0 /* offset */); - if (dpy->driverContext.FBAddress == (caddr_t) - 1) { - fprintf(stderr, "error: unable to mmap framebuffer: %s\n", - strerror(errno)); - return GL_FALSE; - } - - /* mmap the MMIO region into our address space */ - dpy->driverContext.MMIOStart = dpy->FixedInfo.mmio_start; - dpy->driverContext.MMIOSize = dpy->FixedInfo.mmio_len; - dpy->driverContext.MMIOAddress = (caddr_t) mmap(0, /* start */ - dpy->driverContext.MMIOSize, /* bytes */ - PROT_READ | PROT_WRITE, /* prot */ - MAP_SHARED, /* flags */ - dpy->FrameBufferFD, /* fd */ - dpy->FixedInfo.smem_len /* offset */); - if (dpy->driverContext.MMIOAddress == (caddr_t) - 1) { - fprintf(stderr, "error: unable to mmap mmio region: %s\n", - strerror(errno)); - return GL_FALSE; - } - - fprintf(stderr, "got MMIOAddress %p offset %d\n", - dpy->driverContext.MMIOAddress, - dpy->FixedInfo.smem_len); - - return GL_TRUE; -} - - - - -/** - * \brief Setup up the desired framebuffer device mode. - * - * \param dpy the display handle. - * - * \return GL_TRUE on success, or GL_FALSE on failure. - * - * \sa This is called during __miniglx_StartServer(). - * - * \internal - * - * Bumps the size of the window the the next supported mode. Sets the - * variable screen information according to the desired mode and asks - * the driver to validate the mode. Certifies that a DirectColor or - * TrueColor visual is used from the updated fixed screen information. - * In the case of DirectColor visuals, sets up an 'identity' colormap to - * mimic a TrueColor visual. - * - * Calls the driver hooks 'ValidateMode' and 'PostValidateMode' to - * allow the driver to make modifications to the chosen mode according - * to hardware constraints, or to save and restore videocard registers - * that may be clobbered by the fbdev driver. - * - * \todo Timings are hard-coded in the source for a set of supported modes. - */ -static GLboolean -SetupFBDev( Display *dpy ) -{ - int width, height; - - assert(dpy); - - width = dpy->driverContext.shared.virtualWidth; - height = dpy->driverContext.shared.virtualHeight; - - if (width==832) - width=800; -#if 0 - /* Bump size up to next supported mode. - */ - if (width <= 720 && height <= 480) { - width = 720; height = 480; - } - else if (width <= 960 && height <= 540) { - width = 960; height = 540; - } - else if (width <= 800 && height <= 600) { - width = 800; height = 600; - } - else if (width <= 1024 && height <= 768) { - width = 1024; height = 768; - } - else if (width <= 768 && height <= 1024) { - width = 768; height = 1024; - } - else if (width <= 1280 && height <= 1024) { - width = 1280; height = 1024; - } -#endif - - dpy->driverContext.shared.fbStride = width * (dpy->driverContext.bpp / 8); - - /* set the depth, resolution, etc */ - dpy->VarInfo = dpy->OrigVarInfo; - dpy->VarInfo.bits_per_pixel = dpy->driverContext.bpp; - dpy->VarInfo.xres_virtual = dpy->driverContext.shared.virtualWidth; - dpy->VarInfo.yres_virtual = dpy->driverContext.shared.virtualHeight; - dpy->VarInfo.xres = dpy->driverContext.shared.Width; - dpy->VarInfo.yres = height; - dpy->VarInfo.xoffset = 0; - dpy->VarInfo.yoffset = 0; - dpy->VarInfo.nonstd = 0; - dpy->VarInfo.vmode &= ~FB_VMODE_YWRAP; /* turn off scrolling */ - - if (dpy->VarInfo.bits_per_pixel == 32) { - dpy->VarInfo.red.offset = 16; - dpy->VarInfo.green.offset = 8; - dpy->VarInfo.blue.offset = 0; - dpy->VarInfo.transp.offset = 24; - dpy->VarInfo.red.length = 8; - dpy->VarInfo.green.length = 8; - dpy->VarInfo.blue.length = 8; - dpy->VarInfo.transp.length = 8; - } - else if (dpy->VarInfo.bits_per_pixel == 16) { - dpy->VarInfo.red.offset = 11; - dpy->VarInfo.green.offset = 5; - dpy->VarInfo.blue.offset = 0; - dpy->VarInfo.red.length = 5; - dpy->VarInfo.green.length = 6; - dpy->VarInfo.blue.length = 5; - dpy->VarInfo.transp.offset = 0; - dpy->VarInfo.transp.length = 0; - } - else { - fprintf(stderr, "Only 32bpp and 16bpp modes supported at the moment\n"); - return 0; - } - - if (!dpy->driver->validateMode( &dpy->driverContext )) { - fprintf(stderr, "Driver validateMode() failed\n"); - return 0; - } - - /* These should be calculated with the gtf.c program, and then we could - remove all this... AlanH. */ - if (dpy->VarInfo.xres == 1280 && - dpy->VarInfo.yres == 1024) { - /* timing values taken from /etc/fb.modes (1280x1024 @ 75Hz) */ - dpy->VarInfo.pixclock = 7408; - dpy->VarInfo.left_margin = 248; - dpy->VarInfo.right_margin = 16; - dpy->VarInfo.upper_margin = 38; - dpy->VarInfo.lower_margin = 1; - dpy->VarInfo.hsync_len = 144; - dpy->VarInfo.vsync_len = 3; - } - else if (dpy->VarInfo.xres == 1024 && - dpy->VarInfo.yres == 768) { - /* timing values taken from /etc/fb.modes (1024x768 @ 75Hz) */ - dpy->VarInfo.pixclock = 12699; - dpy->VarInfo.left_margin = 176; - dpy->VarInfo.right_margin = 16; - dpy->VarInfo.upper_margin = 28; - dpy->VarInfo.lower_margin = 1; - dpy->VarInfo.hsync_len = 96; - dpy->VarInfo.vsync_len = 3; - } - else if (dpy->VarInfo.xres == 800 && - dpy->VarInfo.yres == 600) { - /* timing values taken from /etc/fb.modes (800x600 @ 75Hz) */ - dpy->VarInfo.pixclock = 27778; - dpy->VarInfo.left_margin = 128; - dpy->VarInfo.right_margin = 24; - dpy->VarInfo.upper_margin = 22; - dpy->VarInfo.lower_margin = 1; - dpy->VarInfo.hsync_len = 72; - dpy->VarInfo.vsync_len = 2; - } - else if (dpy->VarInfo.xres == 720 && - dpy->VarInfo.yres == 480) { - dpy->VarInfo.pixclock = 37202; - dpy->VarInfo.left_margin = 88; - dpy->VarInfo.right_margin = 16; - dpy->VarInfo.upper_margin = 14; - dpy->VarInfo.lower_margin = 1; - dpy->VarInfo.hsync_len = 72; - dpy->VarInfo.vsync_len = 3; - } - else if (dpy->VarInfo.xres == 960 && - dpy->VarInfo.yres == 540) { - dpy->VarInfo.pixclock = 24273; - dpy->VarInfo.left_margin = 128; - dpy->VarInfo.right_margin = 32; - dpy->VarInfo.upper_margin = 16; - dpy->VarInfo.lower_margin = 1; - dpy->VarInfo.hsync_len = 96; - dpy->VarInfo.vsync_len = 3; - } - else if (dpy->VarInfo.xres == 768 && - dpy->VarInfo.yres == 1024) { - /* timing values for 768x1024 @ 75Hz */ - dpy->VarInfo.pixclock = 11993; - dpy->VarInfo.left_margin = 136; - dpy->VarInfo.right_margin = 32; - dpy->VarInfo.upper_margin = 41; - dpy->VarInfo.lower_margin = 1; - dpy->VarInfo.hsync_len = 80; - dpy->VarInfo.vsync_len = 3; - } - else { - /* XXX need timings for other screen sizes */ - fprintf(stderr, "XXXX screen size %d x %d not supported at this time!\n", - dpy->VarInfo.xres, dpy->VarInfo.yres); - return GL_FALSE; - } - - fprintf(stderr, "[miniglx] Setting mode: visible %dx%d virtual %dx%dx%d\n", - dpy->VarInfo.xres, dpy->VarInfo.yres, - dpy->VarInfo.xres_virtual, dpy->VarInfo.yres_virtual, - dpy->VarInfo.bits_per_pixel); - - /* set variable screen info */ - if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->VarInfo)) { - fprintf(stderr, "error: ioctl(FBIOPUT_VSCREENINFO) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - /* get the variable screen info, in case it has been modified */ - if (ioctl(dpy->FrameBufferFD, FBIOGET_VSCREENINFO, &dpy->VarInfo)) { - fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - - fprintf(stderr, "[miniglx] Readback mode: visible %dx%d virtual %dx%dx%d\n", - dpy->VarInfo.xres, dpy->VarInfo.yres, - dpy->VarInfo.xres_virtual, dpy->VarInfo.yres_virtual, - dpy->VarInfo.bits_per_pixel); - - /* Get the fixed screen info */ - if (ioctl(dpy->FrameBufferFD, FBIOGET_FSCREENINFO, &dpy->FixedInfo)) { - fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n", - strerror(errno)); - return GL_FALSE; - } - - if (dpy->FixedInfo.visual != FB_VISUAL_TRUECOLOR && - dpy->FixedInfo.visual != FB_VISUAL_DIRECTCOLOR) { - fprintf(stderr, "non-TRUECOLOR visuals not supported.\n"); - return GL_FALSE; - } - - if (dpy->FixedInfo.visual == FB_VISUAL_DIRECTCOLOR) { - struct fb_cmap cmap; - unsigned short red[256], green[256], blue[256]; - int rcols = 1 << dpy->VarInfo.red.length; - int gcols = 1 << dpy->VarInfo.green.length; - int bcols = 1 << dpy->VarInfo.blue.length; - int i; - - cmap.start = 0; - cmap.len = gcols; - cmap.red = red; - cmap.green = green; - cmap.blue = blue; - cmap.transp = NULL; - - for (i = 0; i < rcols ; i++) - red[i] = (65536/(rcols-1)) * i; - - for (i = 0; i < gcols ; i++) - green[i] = (65536/(gcols-1)) * i; - - for (i = 0; i < bcols ; i++) - blue[i] = (65536/(bcols-1)) * i; - - if (ioctl(dpy->FrameBufferFD, FBIOPUTCMAP, (void *) &cmap) < 0) { - fprintf(stderr, "ioctl(FBIOPUTCMAP) failed [%d]\n", i); - exit(1); - } - } - - /* May need to restore regs fbdev has clobbered: - */ - if (!dpy->driver->postValidateMode( &dpy->driverContext )) { - fprintf(stderr, "Driver postValidateMode() failed\n"); - return 0; - } - - return GL_TRUE; -} - - -/** - * \brief Restore the framebuffer device to state it was in before we started - * - * Undoes the work done by SetupFBDev(). - * - * \param dpy the display handle. - * - * \return GL_TRUE on success, or GL_FALSE on failure. - * - * \sa Called from XDestroyWindow(). - * - * \internal - * Restores the original variable screen info. - */ -static GLboolean -RestoreFBDev( Display *dpy ) -{ - /* restore original variable screen info */ - if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->OrigVarInfo)) { - fprintf(stderr, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n", - strerror(errno)); - return GL_FALSE; - } - dpy->VarInfo = dpy->OrigVarInfo; - - return GL_TRUE; -} - - -/** - * \brief Close the framebuffer device. - * - * \param dpy the display handle. - * - * \sa Called from XCloseDisplay(). - * - * \internal - * Unmaps the framebuffer and MMIO region. Restores the text mode and the - * original virtual terminal. Closes the console and framebuffer devices. - */ -static void -CloseFBDev( Display *dpy ) -{ - struct vt_mode VT; - - munmap(dpy->driverContext.FBAddress, dpy->driverContext.FBSize); - munmap(dpy->driverContext.MMIOAddress, dpy->driverContext.MMIOSize); - - if (dpy->ConsoleFD) { - /* restore text mode */ - ioctl(dpy->ConsoleFD, KDSETMODE, KD_TEXT); - - /* set vt */ - if (ioctl(dpy->ConsoleFD, VT_GETMODE, &VT) != -1) { - VT.mode = VT_AUTO; - ioctl(dpy->ConsoleFD, VT_SETMODE, &VT); - } - - /* restore original vt */ - if (dpy->OriginalVT >= 0) { - ioctl(dpy->ConsoleFD, VT_ACTIVATE, dpy->OriginalVT); - dpy->OriginalVT = -1; - } - - close(dpy->ConsoleFD); - } - close(dpy->FrameBufferFD); -} - -/*@}*/ - - -/**********************************************************************/ -/** \name Misc functions needed for DRI drivers */ -/**********************************************************************/ -/*@{*/ - -/** - * \brief Find the DRI screen dependent methods associated with the display. - * - * \param dpy a display handle, as returned by XOpenDisplay(). - * \param scrn the screen number. Not referenced. - * - * \returns a pointer to a __DRIscreenRec structure. - * - * \internal - * Returns the MiniGLXDisplayRec::driScreen attribute. - */ -static __DRIscreen * -__glXFindDRIScreen(__DRInativeDisplay *dpy, int scrn) -{ - (void) scrn; - return &((Display*)dpy)->driScreen; -} - -/** - * \brief Validate a drawable. - * - * \param dpy a display handle, as returned by XOpenDisplay(). - * \param draw drawable to validate. - * - * \internal - * Since Mini GLX only supports one window, compares the specified drawable with - * the MiniGLXDisplayRec::TheWindow attribute. - */ -static GLboolean -__glXWindowExists(__DRInativeDisplay *dpy, __DRIid draw) -{ - const Display * const display = (Display*)dpy; - if (display->TheWindow == (Window) draw) - return True; - else - return False; -} - -/** - * \brief Get current thread ID. - * - * \return thread ID. - * - * \internal - * Always returns 0. - */ -/*unsigned long -_glthread_GetID(void) -{ - return 0; -}*/ - -/*@}*/ - - -/** - * \brief Scan Linux /prog/bus/pci/devices file to determine hardware - * chipset based on supplied bus ID. - * - * \return probed chipset (non-zero) on success, zero otherwise. - * - * \internal - */ -static int get_chipset_from_busid( Display *dpy ) -{ - char buf[0x200]; - FILE *file; - const char *fname = "/proc/bus/pci/devices"; - int retval = 0; - - if (!(file = fopen(fname,"r"))) { - fprintf(stderr, "couldn't open %s: %s\n", fname, strerror(errno)); - return 0; - } - - while (fgets(buf, sizeof(buf)-1, file)) { - unsigned int nr, bus, dev, fn, vendor, device, encode; - nr = sscanf(buf, "%04x\t%04x%04x", &encode, - &vendor, &device); - - bus = encode >> 8; - dev = (encode & 0xFF) >> 3; - fn = encode & 0x7; - - if (nr != 3) - break; - - if (bus == dpy->driverContext.pciBus && - dev == dpy->driverContext.pciDevice && - fn == dpy->driverContext.pciFunc) { - retval = device; - break; - } - } - - fclose(file); - - if (retval) - fprintf(stderr, "[miniglx] probed chipset 0x%x\n", retval); - else - fprintf(stderr, "[miniglx] failed to probe chipset\n"); - - return retval; -} - - -/** - * \brief Read settings from a configuration file. - * - * The configuration file is usually "/etc/miniglx.conf", but can be overridden - * with the MINIGLX_CONF environment variable. - * - * The format consists in \code option = value \endcode lines. The option names - * corresponds to the fields in MiniGLXDisplayRec. - * - * \param dpy the display handle as. - * - * \return non-zero on success, zero otherwise. - * - * \internal - * Sets some defaults. Opens and parses the the Mini GLX configuration file and - * fills in the MiniGLXDisplayRec field that corresponds for each option. - */ -static int __read_config_file( Display *dpy ) -{ - FILE *file; - const char *fname; - - /* Fallback/defaults - */ - dpy->fbdevDevice = "/dev/fb0"; - dpy->clientDriverName = "fb_dri.so"; - dpy->driverContext.pciBus = 0; - dpy->driverContext.pciDevice = 0; - dpy->driverContext.pciFunc = 0; - dpy->driverContext.chipset = 0; - dpy->driverContext.pciBusID = 0; - dpy->driverContext.shared.virtualWidth = 1280; - dpy->driverContext.shared.virtualHeight = 1024; - dpy->driverContext.bpp = 32; - dpy->driverContext.cpp = 4; - dpy->rotateMode = 0; - dpy->driverContext.agpmode = 1; - dpy->driverContext.isPCI = 0; - dpy->driverContext.colorTiling = 0; - - fname = getenv("MINIGLX_CONF"); - if (!fname) fname = "/etc/miniglx.conf"; - - file = fopen(fname, "r"); - if (!file) { - fprintf(stderr, "couldn't open config file %s: %s\n", fname, strerror(errno)); - return 0; - } - - - while (!feof(file)) { - char buf[81], *opt = buf, *val, *tmp1, *tmp2; - fgets(buf, sizeof(buf), file); - - /* Parse 'opt = val' -- must be easier ways to do this. - */ - while (isspace(*opt)) opt++; - val = opt; - if (*val == '#') continue; /* comment */ - while (!isspace(*val) && *val != '=' && *val) val++; - tmp1 = val; - while (isspace(*val)) val++; - if (*val != '=') continue; - *tmp1 = 0; - val++; - while (isspace(*val)) val++; - tmp2 = val; - while (!isspace(*tmp2) && *tmp2 != '\n' && *tmp2) tmp2++; - *tmp2 = 0; - - - if (strcmp(opt, "fbdevDevice") == 0) - dpy->fbdevDevice = strdup(val); - else if (strcmp(opt, "clientDriverName") == 0) - dpy->clientDriverName = strdup(val); - else if (strcmp(opt, "rotateMode") == 0) - dpy->rotateMode = atoi(val) ? 1 : 0; - else if (strcmp(opt, "pciBusID") == 0) { - if (sscanf(val, "PCI:%d:%d:%d", - &dpy->driverContext.pciBus, - &dpy->driverContext.pciDevice, - &dpy->driverContext.pciFunc) != 3) { - fprintf(stderr, "malformed bus id: %s\n", val); - continue; - } - dpy->driverContext.pciBusID = strdup(val); - } - else if (strcmp(opt, "chipset") == 0) { - if (sscanf(val, "0x%x", &dpy->driverContext.chipset) != 1) - fprintf(stderr, "malformed chipset: %s\n", opt); - } - else if (strcmp(opt, "virtualWidth") == 0) { - if (sscanf(val, "%d", &dpy->driverContext.shared.virtualWidth) != 1) - fprintf(stderr, "malformed virtualWidth: %s\n", opt); - } - else if (strcmp(opt, "virtualHeight") == 0) { - if (sscanf(val, "%d", &dpy->driverContext.shared.virtualHeight) != 1) - fprintf(stderr, "malformed virutalHeight: %s\n", opt); - } - else if (strcmp(opt, "bpp") == 0) { - if (sscanf(val, "%d", &dpy->driverContext.bpp) != 1) - fprintf(stderr, "malformed bpp: %s\n", opt); - dpy->driverContext.cpp = dpy->driverContext.bpp / 8; - } - else if (strcmp(opt, "agpmode") == 0) { - if (sscanf(val, "%d", &dpy->driverContext.agpmode) != 1) - fprintf(stderr, "malformed agpmode: %s\n", opt); - } - else if (strcmp(opt, "isPCI") == 0) { - dpy->driverContext.isPCI = atoi(val) ? 1 : 0; - } - else if (strcmp(opt, "colorTiling") == 0) { - dpy->driverContext.colorTiling = atoi(val) ? 1 : 0; - } - } - - fclose(file); - - if (dpy->driverContext.chipset == 0 && dpy->driverContext.pciBusID != 0) - dpy->driverContext.chipset = get_chipset_from_busid( dpy ); - - return 1; -} - -/** - * Versioned name of the expected \c __driCreateNewScreen function. - * - * The version of the last incompatible loader/driver inteface change is - * appended to the name of the \c __driCreateNewScreen function. This - * prevents loaders from trying to load drivers that are too old. - * - * \todo - * Create a macro or something so that this is automatically updated. - */ -static const char createNewScreenName[] = "__driCreateNewScreen_20050727"; - - -static int InitDriver( Display *dpy ) -{ - /* - * Begin DRI setup. - * We're kind of combining the per-display and per-screen information - * which was kept separate in XFree86/DRI's libGL. - */ - dpy->dlHandle = dlopen(dpy->clientDriverName, RTLD_NOW | RTLD_GLOBAL); - if (!dpy->dlHandle) { - fprintf(stderr, "Unable to open %s: %s\n", dpy->clientDriverName, - dlerror()); - goto failed; - } - - /* Pull in Mini GLX specific hooks: - */ - dpy->driver = (struct DRIDriverRec *) dlsym(dpy->dlHandle, - "__driDriver"); - if (!dpy->driver) { - fprintf(stderr, "Couldn't find __driDriver in %s\n", - dpy->clientDriverName); - goto failed; - } - - /* Pull in standard DRI client-side driver hooks: - */ - dpy->createNewScreen = (PFNCREATENEWSCREENFUNC) - dlsym(dpy->dlHandle, createNewScreenName); - if (!dpy->createNewScreen) { - fprintf(stderr, "Couldn't find %s in %s\n", createNewScreenName, - dpy->clientDriverName); - goto failed; - } - - return GL_TRUE; - -failed: - if (dpy->dlHandle) { - dlclose(dpy->dlHandle); - dpy->dlHandle = 0; - } - return GL_FALSE; -} - - -/**********************************************************************/ -/** \name Public API functions (Xlib and GLX) */ -/**********************************************************************/ -/*@{*/ - - -/** - * \brief Initialize the graphics system. - * - * \param display_name currently ignored. It is recommended to pass it as NULL. - * \return a pointer to a #Display if the function is able to initialize - * the graphics system, NULL otherwise. - * - * Allocates a MiniGLXDisplayRec structure and fills in with information from a - * configuration file. - * - * Calls OpenFBDev() to open the framebuffer device and calls - * DRIDriverRec::initFBDev to do the client-side initialization on it. - * - * Loads the DRI driver and pulls in Mini GLX specific hooks into a - * DRIDriverRec structure, and the standard DRI \e __driCreateScreen hook. - * Asks the driver for a list of supported visuals. Performs the per-screen - * client-side initialization. Also setups the callbacks in the screen private - * information. - * - * Does the framebuffer device setup. Calls __miniglx_open_connections() to - * serve clients. - */ -Display * -__miniglx_StartServer( const char *display_name ) -{ - Display *dpy; - int use_vt = 0; - - pci_system_init(); - - dpy = (Display *)calloc(1, sizeof(Display)); - if (!dpy) - return NULL; - - dpy->IsClient = False; - - if (!__read_config_file( dpy )) { - fprintf(stderr, "Couldn't get configuration details\n"); - free(dpy); - return NULL; - } - - /* Open the fbdev device - */ - if (!OpenFBDev(dpy, use_vt)) { - fprintf(stderr, "OpenFBDev failed\n"); - free(dpy); - return NULL; - } - - if (!InitDriver(dpy)) { - fprintf(stderr, "InitDriver failed\n"); - free(dpy); - return NULL; - } - - /* Perform the initialization normally done in the X server - */ - if (!dpy->driver->initFBDev( &dpy->driverContext )) { - fprintf(stderr, "%s: __driInitFBDev failed\n", __FUNCTION__); - dlclose(dpy->dlHandle); - return GL_FALSE; - } - - /* do fbdev setup - */ - if (!SetupFBDev(dpy)) { - fprintf(stderr, "SetupFBDev failed\n"); - free(dpy); - return NULL; - } - - /* unlock here if not using VT -- JDS */ - if (!use_vt) { - if (dpy->driver->restoreHardware) - dpy->driver->restoreHardware( &dpy->driverContext ); - DRM_UNLOCK( dpy->driverContext.drmFD, - dpy->driverContext.pSAREA, - dpy->driverContext.serverContext ); - dpy->hwActive = 1; - } - - /* Ready for clients: - */ - if (!__miniglx_open_connections(dpy)) { - free(dpy); - return NULL; - } - - return dpy; -} - - -/** - * Implement \c __DRIinterfaceMethods::getProcAddress. - */ -static __DRIfuncPtr get_proc_address( const char * proc_name ) -{ - (void) proc_name; - return NULL; -} - - -/** - * Table of functions exported by the loader to the driver. - */ -static const __DRIinterfaceMethods interface_methods = { - get_proc_address, - - _gl_context_modes_create, - _gl_context_modes_destroy, - - __glXFindDRIScreen, - __glXWindowExists, - - __glXCreateContextWithConfig, - xf86DRI_DestroyContext, - - xf86DRI_CreateDrawable, - xf86DRI_DestroyDrawable, - __glXGetDrawableInfo, - - __glXGetUST, - __glXGetMscRate, -}; - - -static void * -CallCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc) -{ - void *psp = NULL; - drm_handle_t hSAREA; - drmAddress pSAREA; - const char *BusID; - int i; - __DRIversion ddx_version; - __DRIversion dri_version; - __DRIversion drm_version; - __DRIframebuffer framebuffer; - int fd = -1; - int status; - const char * err_msg; - const char * err_extra; - drmVersionPtr version; - drm_handle_t hFB; - drm_magic_t magic; - - - hSAREA = dpy->driverContext.shared.hSAREA; - BusID = dpy->driverContext.pciBusID; - - fd = drmOpen(NULL, BusID); - - err_msg = "open DRM"; - err_extra = strerror( -fd ); - - if (fd < 0) goto done; - - err_msg = "drmGetMagic"; - err_extra = NULL; - - if (drmGetMagic(fd, &magic)) goto done; - - dpy->authorized = False; - send_char_msg( dpy, 0, _Authorize ); - send_msg( dpy, 0, &magic, sizeof(magic)); - - /* force net buffer flush */ - while (!dpy->authorized) - handle_fd_events( dpy, 0 ); - - version = drmGetVersion(fd); - if (version) { - drm_version.major = version->version_major; - drm_version.minor = version->version_minor; - drm_version.patch = version->version_patchlevel; - drmFreeVersion(version); - } - else { - drm_version.major = -1; - drm_version.minor = -1; - drm_version.patch = -1; - } - - /* - * Get device name (like "tdfx") and the ddx version numbers. - * We'll check the version in each DRI driver's "createScreen" - * function. - */ - ddx_version.major = -1; - ddx_version.minor = 0; - ddx_version.patch = 0; - - /* - * Get the DRI X extension version. - */ - dri_version.major = 4; - dri_version.minor = 0; - dri_version.patch = 0; - - /* - * Get device-specific info. pDevPriv will point to a struct - * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) - * that has information about the screen size, depth, pitch, - * ancilliary buffers, DRM mmap handles, etc. - */ - hFB = dpy->driverContext.shared.hFrameBuffer; - framebuffer.size = dpy->driverContext.shared.fbSize; - framebuffer.stride = dpy->driverContext.shared.fbStride; - framebuffer.dev_priv_size = dpy->driverContext.driverClientMsgSize; - framebuffer.dev_priv = dpy->driverContext.driverClientMsg; - framebuffer.width = dpy->driverContext.shared.virtualWidth; - framebuffer.height = dpy->driverContext.shared.virtualHeight; - - /* - * Map the framebuffer region. - */ - status = drmMap(fd, hFB, framebuffer.size, - (drmAddressPtr)&framebuffer.base); - - err_msg = "drmMap of framebuffer"; - err_extra = strerror( -status ); - - if ( status != 0 ) goto done; - - /* - * Map the SAREA region. Further mmap regions may be setup in - * each DRI driver's "createScreen" function. - */ - status = drmMap(fd, hSAREA, SAREA_MAX, &pSAREA); - - err_msg = "drmMap of sarea"; - err_extra = strerror( -status ); - - if ( status == 0 ) { - err_msg = "InitDriver"; - err_extra = NULL; - psp = dpy->createNewScreen(dpy, scrn, psc, NULL, - & ddx_version, - & dri_version, - & drm_version, - & framebuffer, - pSAREA, - fd, - 20050727, - & interface_methods, - (__GLcontextModes **) &dpy->driver_modes); - - /* fill in dummy visual ids */ - { - __GLcontextModes *temp; - temp = (__GLcontextModes *)dpy->driver_modes; - i = 1; - while (temp) - { - temp->visualID = i++; - temp=temp->next; - } - } - } - -done: - if ( psp == NULL ) { - if ( pSAREA != MAP_FAILED ) { - (void)drmUnmap(pSAREA, SAREA_MAX); - } - - if ( framebuffer.base != MAP_FAILED ) { - (void)drmUnmap((drmAddress)framebuffer.base, framebuffer.size); - } - - if ( framebuffer.dev_priv != NULL ) { - free(framebuffer.dev_priv); - } - - if ( fd >= 0 ) { - (void)drmClose(fd); - } - - if ( err_extra != NULL ) { - fprintf(stderr, "libGL error: %s failed (%s)\n", err_msg, - err_extra); - } - else { - fprintf(stderr, "libGL error: %s failed\n", err_msg ); - } - - fprintf(stderr, "libGL error: reverting to (slow) indirect rendering\n"); - } - - return psp; -} - -/** - * \brief Initialize the graphics system. - * - * \param display_name currently ignored. It is recommended to pass it as NULL. - * \return a pointer to a #Display if the function is able to initialize - * the graphics system, NULL otherwise. - * - * Allocates a MiniGLXDisplayRec structure and fills in with information from a - * configuration file. - * - * Calls __miniglx_open_connections() to connect to the server. - * - * Loads the DRI driver and pulls in Mini GLX specific hooks into a - * DRIDriverRec structure, and the standard DRI \e __driCreateScreen hook. - * Asks the driver for a list of supported visuals. Performs the per-screen - * client-side initialization. Also setups the callbacks in the screen private - * information. - * - * \todo - * - read config file - * - what about virtualWidth, etc? - * - determine dpy->driverClientMsgSize, - * - allocate dpy->driverClientMsg - */ -Display * -XOpenDisplay( const char *display_name ) -{ - Display *dpy; - - dpy = (Display *)calloc(1, sizeof(Display)); - if (!dpy) - return NULL; - - dpy->IsClient = True; - - /* read config file - */ - if (!__read_config_file( dpy )) { - fprintf(stderr, "Couldn't get configuration details\n"); - free(dpy); - return NULL; - } - - /* Connect to the server and receive driverClientMsg - */ - if (!__miniglx_open_connections(dpy)) { - free(dpy); - return NULL; - } - - /* dlopen the driver .so file - */ - if (!InitDriver(dpy)) { - fprintf(stderr, "InitDriver failed\n"); - free(dpy); - return NULL; - } - - /* Perform the client-side initialization. - * - * Clearly there is a limit of one on the number of windows in - * existence at any time. - * - * Need to shut down DRM and free DRI data in XDestroyWindow(), too. - */ - dpy->driScreen.private = CallCreateNewScreen(dpy, 0, &dpy->driScreen); - if (!dpy->driScreen.private) { - fprintf(stderr, "%s: __driCreateScreen failed\n", __FUNCTION__); - dlclose(dpy->dlHandle); - free(dpy); - return NULL; - } - - /* Anything more to do? - */ - return dpy; -} - - -/** - * \brief Release display resources. - * - * When the application is about to exit, the resources associated with the - * graphics system can be released by calling this function. - * - * \param dpy display handle. It becomes invalid at this point. - * - * Destroys the window if any, and destroys the per-screen - * driver private information. - * Calls __miniglx_close_connections(). - * - * If a server, puts the the framebuffer back into the initial state. - * - * Finally frees the display structure. - */ -void -XCloseDisplay( Display *dpy ) -{ - glXMakeCurrent( dpy, NULL, NULL); - - if (dpy->NumWindows) - XDestroyWindow( dpy, dpy->TheWindow ); - - /* As this is done in XOpenDisplay, need to undo it here: - */ - dpy->driScreen.destroyScreen(dpy, 0, dpy->driScreen.private); - - __miniglx_close_connections( dpy ); - - if (!dpy->IsClient) { - /* put framebuffer back to initial state - */ - (*dpy->driver->haltFBDev)( &dpy->driverContext ); - RestoreFBDev(dpy); - CloseFBDev(dpy); - } - - dlclose(dpy->dlHandle); - free(dpy); -} - - -/** - * \brief Window creation. - * - * \param display a display handle, as returned by XOpenDisplay(). - * \param parent the parent window for the new window. For Mini GLX this should - * be - * \code RootWindow(display, 0) \endcode - * \param x the window abscissa. For Mini GLX, it should be zero. - * \param y the window ordinate. For Mini GLX, it should be zero. - * \param width the window width. For Mini GLX, this specifies the desired - * screen width such as 1024 or 1280. - * \param height the window height. For Mini GLX, this specifies the desired - * screen height such as 768 or 1024. - * \param border_width the border width. For Mini GLX, it should be zero. - * \param depth the window pixel depth. For Mini GLX, this should be the depth - * found in the #XVisualInfo object returned by glXChooseVisual() - * \param winclass the window class. For Mini GLX this value should be - * #InputOutput. - * \param visual the visual type. It should be the visual field of the - * #XVisualInfo object returned by glXChooseVisual(). - * \param valuemask which fields of the XSetWindowAttributes() are to be used. - * For Mini GLX this is typically the bitmask - * \code CWBackPixel | CWBorderPixel | CWColormap \endcode - * \param attributes initial window attributes. The - * XSetWindowAttributes::background_pixel, XSetWindowAttributes::border_pixel - * and XSetWindowAttributes::colormap fields should be set. - * - * \return a window handle if it succeeds or zero if it fails. - * - * \note For Mini GLX, windows are full-screen; they cover the entire frame - * buffer. Also, Mini GLX imposes a limit of one window. A second window - * cannot be created until the first one is destroyed. - * - * This function creates and initializes a ::MiniGLXWindowRec structure after - * ensuring that there is no other window created. Performs the per-drawable - * client-side initialization calling the __DRIscreenRec::createDrawable - * method. - * - */ -Window -XCreateWindow( Display *dpy, Window parent, int x, int y, - unsigned int width, unsigned int height, - unsigned int border_width, int depth, unsigned int winclass, - Visual *visual, unsigned long valuemask, - XSetWindowAttributes *attributes ) -{ - const int empty_attribute_list[1] = { None }; - - Window win; - - /* ignored */ - (void) x; - (void) y; - (void) border_width; - (void) depth; - (void) winclass; - (void) valuemask; - (void) attributes; - - if (!dpy->IsClient) { - fprintf(stderr, "Server process may not create windows (currently)\n"); - return NULL; - } - - if (dpy->NumWindows > 0) - return NULL; /* only allow one window */ - - assert(dpy->TheWindow == NULL); - - win = malloc(sizeof(struct MiniGLXWindowRec)); - if (!win) - return NULL; - - /* In rotated mode, translate incoming x,y,width,height into - * 'normal' coordinates. - */ - if (dpy->rotateMode) { - int tmp; - tmp = width; width = height; height = tmp; - tmp = x; x = y; y = tmp; - } - - /* init other per-window fields */ - win->x = x; - win->y = y; - win->w = width; - win->h = height; - win->visual = visual; /* ptr assignment */ - - win->bytesPerPixel = dpy->driverContext.cpp; - win->rowStride = dpy->driverContext.shared.virtualWidth * win->bytesPerPixel; - win->size = win->rowStride * height; - win->frontStart = dpy->driverContext.FBAddress + (win->rowStride * win->x) + (win->y * win->bytesPerPixel); - win->frontBottom = (GLubyte *) win->frontStart + (height-1) * win->rowStride; - - /* This is incorrect: the hardware driver could put the backbuffer - * just about anywhere. These fields, including the above are - * hardware dependent & don't really belong here. - */ - if (visual->mode->doubleBufferMode) { - win->backStart = (GLubyte *) win->frontStart + - win->rowStride * dpy->driverContext.shared.virtualHeight; - win->backBottom = (GLubyte *) win->backStart - + (height - 1) * win->rowStride; - win->curBottom = win->backBottom; - } - else { - /* single buffered */ - win->backStart = NULL; - win->backBottom = NULL; - win->curBottom = win->frontBottom; - } - - dpy->driScreen.createNewDrawable(dpy, visual->mode, (int) win, - &win->driDrawable, GLX_WINDOW_BIT, empty_attribute_list); - - if (!win->driDrawable.private) { - fprintf(stderr, "%s: dri.createDrawable failed\n", __FUNCTION__); - free(win); - return NULL; - } - - dpy->NumWindows++; - dpy->TheWindow = win; - - return win; -} - - -/** - * \brief Destroy window. - * - * \param display display handle. - * \param w window handle. - * - * This function calls XUnmapWindow() and frees window \p w. - * - * In case of destroying the current buffer first unbinds the GLX context - * by calling glXMakeCurrent() with no drawable. - */ -void -XDestroyWindow( Display *display, Window win ) -{ - if (display && display->IsClient && win) { - /* check if destroying the current buffer */ - Window curDraw = glXGetCurrentDrawable(); - if (win == curDraw) { - glXMakeCurrent( display, NULL, NULL); - } - - XUnmapWindow( display, win ); - - /* Destroy the drawable. */ - win->driDrawable.destroyDrawable(display, win->driDrawable.private); - free(win); - - /* unlink window from display */ - display->NumWindows--; - assert(display->NumWindows == 0); - display->TheWindow = NULL; - } -} - - - - -/** - * \brief Create color map structure. - * - * \param dpy the display handle as returned by XOpenDisplay(). - * \param w the window on whose screen you want to create a color map. This - * parameter is ignored by Mini GLX but should be the value returned by the - * \code RootWindow(display, 0) \endcode macro. - * \param visual a visual type supported on the screen. This parameter is - * ignored by Mini GLX but should be the XVisualInfo::visual returned by - * glXChooseVisual(). - * \param alloc the color map entries to be allocated. This parameter is ignored - * by Mini GLX but should be set to #AllocNone. - * - * \return the color map. - * - * This function is only provided to ease porting. Practically a no-op - - * returns a pointer to a dynamically allocated chunk of memory (one byte). - */ -Colormap -XCreateColormap( Display *dpy, Window w, Visual *visual, int alloc ) -{ - (void) dpy; - (void) w; - (void) visual; - (void) alloc; - return (Colormap) malloc(1); -} - - -/** - * \brief Destroy color map structure. - * - * \param display The display handle as returned by XOpenDisplay(). - * \param colormap the color map to destroy. - * - * This function is only provided to ease porting. Practically a no-op. - * - * Frees the memory pointed by \p colormap. - */ -void -XFreeColormap( Display *display, Colormap colormap ) -{ - (void) display; - (void) colormap; - free(colormap); -} - - -/** - * \brief Free client data. - * - * \param data the data that is to be freed. - * - * Frees the memory pointed by \p data. - */ -void -XFree( void *data ) -{ - free(data); -} - - -/** - * \brief Query available visuals. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param vinfo_mask a bitmask indicating which fields of the \p vinfo_template - * are to be matched. The value must be \c VisualScreenMask. - * \param vinfo_template a template whose fields indicate which visual - * attributes must be matched by the results. The XVisualInfo::screen field of - * this structure must be zero. - * \param nitens_return will hold the number of visuals returned. - * - * \return the address of an array of all available visuals. - * - * An example of using XGetVisualInfo() to get all available visuals follows: - * - * \code - * XVisualInfo vinfo_template, *results; - * int nitens_return; - * Display *dpy = XOpenDisplay(NULL); - * vinfo_template.screen = 0; - * results = XGetVisualInfo(dpy, VisualScreenMask, &vinfo_template, &nitens_return); - * \endcode - * - * Returns the list of all ::XVisualInfo available, one per - * ::__GLcontextMode stored in MiniGLXDisplayRec::modes. - */ -XVisualInfo * -XGetVisualInfo( Display *dpy, long vinfo_mask, XVisualInfo *vinfo_template, int *nitens_return ) -{ - const __GLcontextModes *mode; - XVisualInfo *results; - Visual *visResults; - int i, n=0; - - // ASSERT(vinfo_mask == VisualScreenMask); - ASSERT(vinfo_template.screen == 0); - - if (vinfo_mask == VisualIDMask) - { - for ( mode = dpy->driver_modes ; mode != NULL ; mode= mode->next ) - if (mode->visualID == vinfo_template->visualid) - n=1; - - if (n==0) - return NULL; - - results = (XVisualInfo *)calloc(1, n * sizeof(XVisualInfo)); - if (!results) { - *nitens_return = 0; - return NULL; - } - - visResults = (Visual *)calloc(1, n * sizeof(Visual)); - if (!results) { - free(results); - *nitens_return = 0; - return NULL; - } - - for ( mode = dpy->driver_modes ; mode != NULL ; mode= mode->next ) - if (mode->visualID == vinfo_template->visualid) - { - visResults[0].mode=mode; - visResults[0].visInfo = results; - visResults[0].dpy = dpy; - if (dpy->driverContext.bpp == 32) - visResults[0].pixelFormat = PF_B8G8R8A8; /* XXX: FIX ME */ - else - visResults[0].pixelFormat = PF_B5G6R5; /* XXX: FIX ME */ - - results[0].visual = visResults; - results[0].visualid = mode->visualID; -#if defined(__cplusplus) || defined(c_plusplus) - results[0].c_class = TrueColor; -#else - results[0].class = TrueColor; -#endif - results[0].depth = mode->redBits + - mode->redBits + - mode->redBits + - mode->redBits; - results[0].bits_per_rgb = dpy->driverContext.bpp; - - } - - } - else // if (vinfo_mask == VisualScreenMask) - { - n = 0; - for ( mode = dpy->driver_modes ; mode != NULL ; mode = mode->next ) - n++; - - results = (XVisualInfo *)calloc(1, n * sizeof(XVisualInfo)); - if (!results) { - *nitens_return = 0; - return NULL; - } - - visResults = (Visual *)calloc(1, n * sizeof(Visual)); - if (!results) { - free(results); - *nitens_return = 0; - return NULL; - } - - for ( mode = dpy->driver_modes, i = 0 ; mode != NULL ; mode = mode->next, i++ ) { - visResults[i].mode = mode; - visResults[i].visInfo = results + i; - visResults[i].dpy = dpy; - - if (dpy->driverContext.bpp == 32) - visResults[i].pixelFormat = PF_B8G8R8A8; /* XXX: FIX ME */ - else - visResults[i].pixelFormat = PF_B5G6R5; /* XXX: FIX ME */ - - results[i].visual = visResults + i; - results[i].visualid = mode->visualID; -#if defined(__cplusplus) || defined(c_plusplus) - results[i].c_class = TrueColor; -#else - results[i].class = TrueColor; -#endif - results[i].depth = mode->redBits + - mode->redBits + - mode->redBits + - mode->redBits; - results[i].bits_per_rgb = dpy->driverContext.bpp; - } - } - *nitens_return = n; - return results; -} - - -/** - * \brief Return a visual that matches specified attributes. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param screen the screen number. It is currently ignored by Mini GLX and - * should be zero. - * \param attribList a list of GLX attributes which describe the desired pixel - * format. It is terminated by the token \c None. - * - * The attributes are as follows: - * \arg GLX_USE_GL: - * This attribute should always be present in order to maintain compatibility - * with GLX. - * \arg GLX_RGBA: - * If present, only RGBA pixel formats will be considered. Otherwise, only - * color index formats are considered. - * \arg GLX_DOUBLEBUFFER: - * if present, only double-buffered pixel formats will be chosen. - * \arg GLX_RED_SIZE \e n: - * Must be followed by a non-negative integer indicating the minimum number of - * bits per red pixel component that is acceptable. - * \arg GLX_GREEN_SIZE \e n: - * Must be followed by a non-negative integer indicating the minimum number of - * bits per green pixel component that is acceptable. - * \arg GLX_BLUE_SIZE \e n: - * Must be followed by a non-negative integer indicating the minimum number of - * bits per blue pixel component that is acceptable. - * \arg GLX_ALPHA_SIZE \e n: - * Must be followed by a non-negative integer indicating the minimum number of - * bits per alpha pixel component that is acceptable. - * \arg GLX_STENCIL_SIZE \e n: - * Must be followed by a non-negative integer indicating the minimum number of - * bits per stencil value that is acceptable. - * \arg GLX_DEPTH_SIZE \e n: - * Must be followed by a non-negative integer indicating the minimum number of - * bits per depth component that is acceptable. - * \arg None: - * This token is used to terminate the attribute list. - * - * \return a pointer to an #XVisualInfo object which most closely matches the - * requirements of the attribute list. If there is no visual which matches the - * request, \c NULL will be returned. - * - * \note Visuals with accumulation buffers are not available. - * - * This function searches the list of available visual configurations in - * MiniGLXDisplayRec::configs for a configuration which best matches the GLX - * attribute list parameter. A new ::XVisualInfo object is created which - * describes the visual configuration. The match criteria is described in the - * specification. - */ -XVisualInfo* -glXChooseVisual( Display *dpy, int screen, int *attribList ) -{ - const __GLcontextModes *mode; - Visual *vis; - XVisualInfo *visInfo; - const int *attrib; - GLboolean rgbFlag = GL_FALSE, dbFlag = GL_FALSE, stereoFlag = GL_FALSE; - GLint redBits = 0, greenBits = 0, blueBits = 0, alphaBits = 0; - GLint indexBits = 0, depthBits = 0, stencilBits = 0; - GLint numSamples = 0; - int i=0; - - /* - * XXX in the future, <screen> might be interpreted as a VT - */ - ASSERT(dpy); - ASSERT(screen == 0); - - vis = (Visual *)calloc(1, sizeof(Visual)); - if (!vis) - return NULL; - - visInfo = (XVisualInfo *)malloc(sizeof(XVisualInfo)); - if (!visInfo) { - free(vis); - return NULL; - } - - visInfo->visual = vis; - vis->visInfo = visInfo; - vis->dpy = dpy; - - /* parse the attribute list */ - for (attrib = attribList; attrib && *attrib != None; attrib++) { - switch (attrib[0]) { - case GLX_DOUBLEBUFFER: - dbFlag = GL_TRUE; - break; - case GLX_RGBA: - rgbFlag = GL_TRUE; - break; - case GLX_RED_SIZE: - redBits = attrib[1]; - attrib++; - break; - case GLX_GREEN_SIZE: - greenBits = attrib[1]; - attrib++; - break; - case GLX_BLUE_SIZE: - blueBits = attrib[1]; - attrib++; - break; - case GLX_ALPHA_SIZE: - alphaBits = attrib[1]; - attrib++; - break; - case GLX_STENCIL_SIZE: - stencilBits = attrib[1]; - attrib++; - break; - case GLX_DEPTH_SIZE: - depthBits = attrib[1]; - attrib++; - break; -#if 0 - case GLX_ACCUM_RED_SIZE: - accumRedBits = attrib[1]; - attrib++; - break; - case GLX_ACCUM_GREEN_SIZE: - accumGreenBits = attrib[1]; - attrib++; - break; - case GLX_ACCUM_BLUE_SIZE: - accumBlueBits = attrib[1]; - attrib++; - break; - case GLX_ACCUM_ALPHA_SIZE: - accumAlphaBits = attrib[1]; - attrib++; - break; - case GLX_LEVEL: - /* ignored for now */ - break; -#endif - default: - /* unexpected token */ - fprintf(stderr, "unexpected token in glXChooseVisual attrib list\n"); - free(vis); - free(visInfo); - return NULL; - } - } - - /* search screen configs for suitable visual */ - (void) numSamples; - (void) indexBits; - (void) redBits; - (void) greenBits; - (void) blueBits; - (void) alphaBits; - (void) stereoFlag; - for ( mode = dpy->driver_modes ; mode != NULL ; mode = mode->next ) { - i++; - if (mode->rgbMode == rgbFlag && - mode->doubleBufferMode == dbFlag && - mode->redBits >= redBits && - mode->greenBits >= greenBits && - mode->blueBits >= blueBits && - mode->alphaBits >= alphaBits && - mode->depthBits >= depthBits && - mode->stencilBits >= stencilBits) { - /* found it */ - visInfo->visualid = i; - vis->mode = mode; - break; - } - } - if (!vis->mode) - return NULL; - - /* compute depth and bpp */ - if (rgbFlag) { - /* XXX maybe support depth 16 someday */ -#if defined(__cplusplus) || defined(c_plusplus) - visInfo->c_class = TrueColor; -#else - visInfo->class = TrueColor; -#endif - visInfo->depth = dpy->driverContext.bpp; - visInfo->bits_per_rgb = dpy->driverContext.bpp; - if (dpy->driverContext.bpp == 32) - vis->pixelFormat = PF_B8G8R8A8; - else - vis->pixelFormat = PF_B5G6R5; - } - else { - /* color index mode */ -#if defined(__cplusplus) || defined(c_plusplus) - visInfo->c_class = PseudoColor; -#else - visInfo->class = PseudoColor; -#endif - visInfo->depth = 8; - visInfo->bits_per_rgb = 8; /* bits/pixel */ - vis->pixelFormat = PF_CI8; - } - - return visInfo; -} - - -/** - * \brief Return information about GLX visuals. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param vis the visual to be queried, as returned by glXChooseVisual(). - * \param attrib the visual attribute to be returned. - * \param value pointer to an integer in which the result of the query will be - * stored. - * - * \return zero if no error occurs, \c GLX_INVALID_ATTRIBUTE if the attribute - * parameter is invalid, or \c GLX_BAD_VISUAL if the \p vis parameter is - * invalid. - * - * Returns the appropriate attribute of ::__GLXvisualConfig pointed by - * MiniGLXVisualRec::glxConfig of XVisualInfo::visual. - * - * \sa data types. - */ -int -glXGetConfig( Display *dpy, XVisualInfo *vis, int attrib, int *value ) -{ - const __GLcontextModes *mode = vis->visual->mode; - if (!mode) { - *value = 0; - return GLX_BAD_VISUAL; - } - - switch (attrib) { - case GLX_USE_GL: - *value = True; - return 0; - case GLX_RGBA: - *value = mode->rgbMode; - return 0; - case GLX_DOUBLEBUFFER: - *value = mode->doubleBufferMode; - return 0; - case GLX_RED_SIZE: - *value = mode->redBits; - return 0; - case GLX_GREEN_SIZE: - *value = mode->greenBits; - return 0; - case GLX_BLUE_SIZE: - *value = mode->blueBits; - return 0; - case GLX_ALPHA_SIZE: - *value = mode->alphaBits; - return 0; - case GLX_DEPTH_SIZE: - *value = mode->depthBits; - return 0; - case GLX_STENCIL_SIZE: - *value = mode->stencilBits; - return 0; - default: - *value = 0; - return GLX_BAD_ATTRIBUTE; - } - return 0; -} - - -/** - * \brief Create a new GLX rendering context. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param vis the visual that defines the frame buffer resources available to - * the rendering context, as returned by glXChooseVisual(). - * \param shareList If non-zero, texture objects and display lists are shared - * with the named rendering context. If zero, texture objects and display lists - * will (initially) be private to this context. They may be shared when a - * subsequent context is created. - * \param direct whether direct or indirect rendering is desired. For Mini GLX - * this value is ignored but it should be set to \c True. - * - * \return a ::GLXContext handle if it succeeds or zero if it fails due to - * invalid parameter or insufficient resources. - * - * This function creates and initializes a ::MiniGLXContextRec structure and - * calls the __DRIscreenRec::createContext method to initialize the client - * private data. - */ -GLXContext -glXCreateContext( Display *dpy, XVisualInfo *vis, - GLXContext shareList, Bool direct ) -{ - GLXContext ctx; - void *sharePriv; - - ASSERT(vis); - - ctx = (struct MiniGLXContextRec *)calloc(1, sizeof(struct MiniGLXContextRec)); - if (!ctx) - return NULL; - - ctx->vid = vis->visualid; - - if (shareList) - sharePriv = shareList->driContext.private; - else - sharePriv = NULL; - - ctx->driContext.mode = vis->visual->mode; - ctx->driContext.private = dpy->driScreen.createNewContext(dpy, vis->visual->mode, - GLX_WINDOW_BIT, sharePriv, &ctx->driContext); - - if (!ctx->driContext.private) { - free(ctx); - return NULL; - } - - return ctx; -} - - -/** - * \brief Destroy a GLX context. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param ctx the GLX context to be destroyed. - * - * This function frees the \p ctx parameter after unbinding the current context - * by calling the __DRIcontextRec::bindContext method with zeros and calling - * the __DRIcontextRec::destroyContext method. - */ -void -glXDestroyContext( Display *dpy, GLXContext ctx ) -{ - GLXContext glxctx = glXGetCurrentContext(); - - if (ctx) { - if (glxctx == ctx) { - /* destroying current context */ - ctx->driContext.bindContext(dpy, 0, 0, 0, 0); - CurrentContext = 0; - } - ctx->driContext.destroyContext(dpy, 0, ctx->driContext.private); - free(ctx); - } -} - - -/** - * \brief Bind a GLX context to a window or a pixmap. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param drawable the window or drawable to bind to the rendering context. - * This should be the value returned by XCreateWindow(). - * \param ctx the GLX context to be destroyed. - * - * \return \c True if it succeeds, \c False otherwise to indicate an invalid - * display, window or context parameter. - * - * The current rendering context may be unbound by calling glXMakeCurrent() - * with the window and context parameters set to zero. - * - * An application may create any number of rendering contexts and bind them as - * needed. Note that binding a rendering context is generally not a - * light-weight operation. Most simple OpenGL applications create only one - * rendering context. - * - * This function first unbinds any old context via - * __DRIcontextRec::unbindContext and binds the new one via - * __DRIcontextRec::bindContext. - * - * If \p drawable is zero it unbinds the GLX context by calling - * __DRIcontextRec::bindContext with zeros. - */ -Bool -glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx) -{ - if (dpy && drawable && ctx) { - GLXContext oldContext = glXGetCurrentContext(); - GLXDrawable oldDrawable = glXGetCurrentDrawable(); - /* unbind old */ - if (oldContext) { - oldContext->driContext.unbindContext(dpy, 0, - (__DRIid) oldDrawable, (__DRIid) oldDrawable, - &oldContext->driContext); - } - /* bind new */ - CurrentContext = ctx; - ctx->driContext.bindContext(dpy, 0, (__DRIid) drawable, - (__DRIid) drawable, &ctx->driContext); - ctx->drawBuffer = drawable; - ctx->curBuffer = drawable; - } - else if (ctx && dpy) { - /* unbind */ - ctx->driContext.bindContext(dpy, 0, 0, 0, 0); - } - else if (dpy) { - CurrentContext = 0; /* kw: this seems to be intended??? */ - } - - return True; -} - - -/** - * \brief Exchange front and back buffers. - * - * \param dpy the display handle, as returned by XOpenDisplay(). - * \param drawable the drawable whose buffers are to be swapped. - * - * Any pending rendering commands will be completed before the buffer swap - * takes place. - * - * Calling glXSwapBuffers() on a window which is single-buffered has no effect. - * - * This function just calls the __DRIdrawableRec::swapBuffers method to do the - * work. - */ -void -glXSwapBuffers( Display *dpy, GLXDrawable drawable ) -{ - if (!dpy || !drawable) - return; - - drawable->driDrawable.swapBuffers(dpy, drawable->driDrawable.private); -} - - -/** - * \brief Return the current context - * - * \return the current context, as specified by glXMakeCurrent(), or zero if no - * context is currently bound. - * - * \sa glXCreateContext(), glXMakeCurrent() - * - * Returns the value of the ::CurrentContext global variable. - */ -GLXContext -glXGetCurrentContext( void ) -{ - return CurrentContext; -} - - -/** - * \brief Return the current drawable. - * - * \return the current drawable, as specified by glXMakeCurrent(), or zero if - * no drawable is currently bound. - * - * This function gets the current context via glXGetCurrentContext() and - * returns the MiniGLXContextRec::drawBuffer attribute. - */ -GLXDrawable -glXGetCurrentDrawable( void ) -{ - GLXContext glxctx = glXGetCurrentContext(); - if (glxctx) - return glxctx->drawBuffer; - else - return NULL; -} - - -static GLboolean -__glXCreateContextWithConfig(__DRInativeDisplay *dpy, int screen, - int fbconfigID, void *contextID, drm_context_t *hHWContext) -{ - __DRIscreen *pDRIScreen; - __DRIscreen *psp; - - pDRIScreen = __glXFindDRIScreen(dpy, screen); - if ( (pDRIScreen == NULL) || (pDRIScreen->private == NULL) ) { - return GL_FALSE; - } - - psp = (__DRIscreen *) pDRIScreen->private; - - if (psp->fd) { - if (drmCreateContext(psp->fd, hHWContext)) { - fprintf(stderr, ">>> drmCreateContext failed\n"); - return GL_FALSE; - } - *(void**)contextID = (void*) *hHWContext; - } - - return GL_TRUE; -} - - -static GLboolean -__glXGetDrawableInfo(__DRInativeDisplay *dpy, int scrn, - __DRIid draw, unsigned int * index, unsigned int * stamp, - int * x, int * y, int * width, int * height, - int * numClipRects, drm_clip_rect_t ** pClipRects, - int * backX, int * backY, - int * numBackClipRects, drm_clip_rect_t ** pBackClipRects) -{ - GLXDrawable drawable = (GLXDrawable) draw; - drm_clip_rect_t * cliprect; - Display* display = (Display*)dpy; - __DRIscreen *psp = display->driScreen.private; - __DRIcontext *pcp = (__DRIcontext *)CurrentContext->driContext.private; - __DRIdrawable *pdp = pcp->driDrawablePriv; - if (drawable == 0) { - return GL_FALSE; - } - - cliprect = (drm_clip_rect_t*) _mesa_malloc(sizeof(drm_clip_rect_t)); - cliprect->x1 = drawable->x; - cliprect->y1 = drawable->y; - cliprect->x2 = drawable->x + drawable->w; - cliprect->y2 = drawable->y + drawable->h; - - /* the drawable index is by client id */ - *index = display->clientID; - - *stamp = pcp->driScreenPriv->pSAREA->drawableTable[display->clientID].stamp; - drmUpdateDrawableInfo(psp->fd, pdp->hHWDrawable, DRM_DRAWABLE_CLIPRECTS, 1, cliprect); - *x = drawable->x; - *y = drawable->y; - *width = drawable->w; - *height = drawable->h; - *numClipRects = 1; - *pClipRects = cliprect; - - *backX = drawable->x; - *backY = drawable->y; - *numBackClipRects = 0; - *pBackClipRects = 0; - - return GL_TRUE; -} - - -static GLboolean -xf86DRI_DestroyContext(__DRInativeDisplay *dpy, int screen, __DRIid context_id ) -{ - return GL_TRUE; -} - - -static GLboolean -xf86DRI_CreateDrawable(__DRInativeDisplay *dpy, int screen, __DRIid drawable, - drm_drawable_t *hHWDrawable ) -{ - - Display *display = (Display *)dpy; - __DRIscreen *psp = display->driScreen.private; - int ret; - ret = drmCreateDrawable(psp->fd, hHWDrawable); - - fprintf(stderr, "drawable is %d %08X ret is %d\n", *hHWDrawable, drawable, -ret); - if (ret != 0) - return GL_FALSE; - return GL_TRUE; -} - - -static GLboolean -xf86DRI_DestroyDrawable(__DRInativeDisplay *dpy, int screen, __DRIid drawable) -{ - return GL_TRUE; -} - - -/** - * \brief Query function address. - * - * The glXGetProcAddress() function will return the address of any available - * OpenGL or Mini GLX function. - * - * \param procName name of the function to be returned. - * - * \return If \p procName is a valid function name, a pointer to that function - * will be returned. Otherwise, \c NULL will be returned. - * - * The purpose of glXGetProcAddress() is to facilitate using future extensions - * to OpenGL or Mini GLX. If a future version of the library adds new extension - * functions they'll be accessible via glXGetProcAddress(). The alternative is - * to hard-code calls to the new functions in the application but doing so will - * prevent linking the application with older versions of the library. - * - * Returns the function address by looking up its name in a static (name, - * address) pair list. - */ -void (*glXGetProcAddress(const GLubyte *procname))( void ) -{ - struct name_address { - const char *name; - const void *func; - }; - static const struct name_address functions[] = { - { "glXChooseVisual", (void *) glXChooseVisual }, - { "glXCreateContext", (void *) glXCreateContext }, - { "glXDestroyContext", (void *) glXDestroyContext }, - { "glXMakeCurrent", (void *) glXMakeCurrent }, - { "glXSwapBuffers", (void *) glXSwapBuffers }, - { "glXGetCurrentContext", (void *) glXGetCurrentContext }, - { "glXGetCurrentDrawable", (void *) glXGetCurrentDrawable }, - { "glXGetProcAddress", (void *) glXGetProcAddress }, - { "XOpenDisplay", (void *) XOpenDisplay }, - { "XCloseDisplay", (void *) XCloseDisplay }, - { "XCreateWindow", (void *) XCreateWindow }, - { "XDestroyWindow", (void *) XDestroyWindow }, - { "XMapWindow", (void *) XMapWindow }, - { "XCreateColormap", (void *) XCreateColormap }, - { "XFreeColormap", (void *) XFreeColormap }, - { "XFree", (void *) XFree }, - { "XGetVisualinfo", (void *) XGetVisualInfo }, - { "glXCreatePbuffer", (void *) glXCreatePbuffer }, - { "glXDestroyPbuffer", (void *) glXDestroyPbuffer }, - { "glXChooseFBConfig", (void *) glXChooseFBConfig }, - { "glXGetVisualFromFBConfig", (void *) glXGetVisualFromFBConfig }, - { NULL, NULL } - }; - const struct name_address *entry; - for (entry = functions; entry->name; entry++) { - if (strcmp(entry->name, (const char *) procname) == 0) { - return entry->func; - } - } - return _glapi_get_proc_address((const char *) procname); -} - -void (*glXGetProcAddressARB(const GLubyte *procName))( void ) __attribute__ ((alias ("glXGetProcAddress"))); - -/** - * \brief Query the Mini GLX version. - * - * \param dpy the display handle. It is currently ignored, but should be the - * value returned by XOpenDisplay(). - * \param major receives the major version number of Mini GLX. - * \param minor receives the minor version number of Mini GLX. - * - * \return \c True if the function succeeds, \c False if the function fails due - * to invalid parameters. - * - * \sa #MINI_GLX_VERSION_1_0. - * - * Returns the hard-coded Mini GLX version. - */ -Bool -glXQueryVersion( Display *dpy, int *major, int *minor ) -{ - (void) dpy; - *major = 1; - *minor = 0; - return True; -} - - -/** - * \brief Create a new pbuffer. - */ -GLXPbuffer -glXCreatePbuffer( Display *dpy, GLXFBConfig config, const int *attribList ) -{ - return NULL; -} - - -void -glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf ) -{ - free(pbuf); -} - - -GLXFBConfig * -glXChooseFBConfig( Display *dpy, int screen, const int *attribList, - int *nitems ) -{ - GLXFBConfig *f = (GLXFBConfig *) malloc(sizeof(GLXFBConfig)); - f->visInfo = glXChooseVisual( dpy, screen, (int *) attribList ); - if (f->visInfo) { - *nitems = 1; - return f; - } - else { - *nitems = 0; - free(f); - return NULL; - } -} - - -XVisualInfo * -glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config ) -{ - /* XVisualInfo and GLXFBConfig are the same structure */ - (void) dpy; - return config.visInfo; -} - -void *glXAllocateMemoryMESA(Display *dpy, int scrn, - size_t size, float readFreq, - float writeFreq, float priority) -{ - if (dpy->driScreen.private && dpy->driScreen.allocateMemory) { - return (*dpy->driScreen.allocateMemory)( dpy, scrn, size, - readFreq, writeFreq, - priority ); - } - - return NULL; -} - -void glXFreeMemoryMESA(Display *dpy, int scrn, void *pointer) -{ - if (dpy->driScreen.private && dpy->driScreen.freeMemory) { - (*dpy->driScreen.freeMemory)( dpy, scrn, pointer ); - } -} - -GLuint glXGetMemoryOffsetMESA( Display *dpy, int scrn, - const void *pointer ) -{ - if (dpy->driScreen.private && dpy->driScreen.memoryOffset) { - return (*dpy->driScreen.memoryOffset)( dpy, scrn, pointer ); - } - - return 0; -} - - -/** - * 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. - * - * \note - * This function was copied directly from src/glx/x11/glxcmds.c. - */ -static 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; - } -} - - -/** - * - * \bug - * This needs to be implemented for miniGlx. - */ -static GLboolean __glXGetMscRate(__DRInativeDisplay * dpy, __DRIid drawable, - int32_t * numerator, int32_t * denominator) -{ - *numerator = 0; - *denominator = 0; - return False; -} -/*@}*/ |