+++ /dev/null
-/**
- * \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;
-}
-/*@}*/
+++ /dev/null
-/**
- * \file miniglx_events.c
- * \brief Mini GLX client/server communication functions.
- * \author Keith Whitwell
- *
- * The Mini GLX interface is a subset of the GLX interface, plus a
- * minimal set of Xlib functions. This file adds interfaces to
- * arbitrate a single cliprect between multiple direct rendering
- * clients.
- *
- * A fairly complete client/server non-blocking communication
- * mechanism. Probably overkill given that none of our messages
- * currently exceed 1 byte in length and take place over the
- * relatively benign channel provided by a Unix domain socket.
- */
-
-/*
- * Mesa 3-D graphics library
- * Version: 5.0
- *
- * Copyright (C) 1999-2003 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.
- */
-
-
-
-#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/stat.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/stat.h>
-
-#include <linux/kd.h>
-#include <linux/vt.h>
-
-#include "xf86drm.h"
-#include "miniglxP.h"
-
-
-#define MINIGLX_FIFO_NAME "/tmp/miniglx.fifo"
-
-/**
- * \brief Allocate an XEvent structure on the event queue.
- *
- * \param dpy the display handle.
- *
- * \return Pointer to the queued event structure or NULL on failure.
- *
- * \internal
- * If there is space on the XEvent queue, return a pointer
- * to the next free event and increment the eventqueue tail value.
- * Otherwise return null.
- */
-static XEvent *queue_event( Display *dpy )
-{
- int incr = (dpy->eventqueue.tail + 1) & MINIGLX_EVENT_QUEUE_MASK;
- if (incr == dpy->eventqueue.head) {
- return 0;
- }
- else {
- XEvent *ev = &dpy->eventqueue.queue[dpy->eventqueue.tail];
- dpy->eventqueue.tail = incr;
- return ev;
- }
-}
-
-/**
- * \brief Dequeue an XEvent and copy it into provided storage.
- *
- * \param dpy the display handle.
- * \param event_return pointer to copy the queued event to.
- *
- * \return True or False depending on success.
- *
- * \internal
- * If there is a queued XEvent on the queue, copy it to the provided
- * pointer and increment the eventqueue head value. Otherwise return
- * null.
- */
-static int dequeue_event( Display *dpy, XEvent *event_return )
-{
- if (dpy->eventqueue.tail == dpy->eventqueue.head) {
- return False;
- }
- else {
- *event_return = dpy->eventqueue.queue[dpy->eventqueue.head];
- dpy->eventqueue.head += 1;
- dpy->eventqueue.head &= MINIGLX_EVENT_QUEUE_MASK;
- return True;
- }
-}
-
-/**
- * \brief Shutdown a socket connection.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- *
- * \internal
- * Shutdown and close the file descriptor. If this is the special
- * connection in fd[0], issue an error message and exit - there's been
- * some sort of failure somewhere. Otherwise, let the application
- * know about whats happened by issuing a DestroyNotify event.
- */
-static void shut_fd( Display *dpy, int i )
-{
- if (dpy->fd[i].fd < 0)
- return;
-
- shutdown (dpy->fd[i].fd, SHUT_RDWR);
- close (dpy->fd[i].fd);
- dpy->fd[i].fd = -1;
- dpy->fd[i].readbuf_count = 0;
- dpy->fd[i].writebuf_count = 0;
-
- if (i == 0) {
- fprintf(stderr, "server connection lost\n");
- exit(1);
- }
- else {
- /* Pass this to the application as a DestroyNotify event.
- */
- XEvent *er = queue_event(dpy);
- if (!er) return;
- er->xdestroywindow.type = DestroyNotify;
- er->xdestroywindow.serial = 0;
- er->xdestroywindow.send_event = 0;
- er->xdestroywindow.display = dpy;
- er->xdestroywindow.window = (Window)i;
-
- drmGetLock(dpy->driverContext.drmFD, 1, 0);
- drmUnlock(dpy->driverContext.drmFD, 1);
- }
-}
-
-/**
- * \brief Send a message to a socket connection.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- * \param msg the message to send.
- * \param sz the size of the message
- *
- * \internal
- * Copy the message to the write buffer for the nominated connection.
- * This will be actually sent to that file descriptor from
- * __miniglx_Select().
- */
-int send_msg( Display *dpy, int i,
- const void *msg, size_t sz )
-{
- int cnt = dpy->fd[i].writebuf_count;
- if (MINIGLX_BUF_SIZE - cnt < sz) {
- fprintf(stderr, "client %d: writebuf overflow\n", i);
- return False;
- }
-
- memcpy( dpy->fd[i].writebuf + cnt, msg, sz ); cnt += sz;
- dpy->fd[i].writebuf_count = cnt;
- return True;
-}
-
-/**
- * \brief Send a message to a socket connection.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- * \param msg the message to send.
- *
- * \internal
- * Use send_msg() to send a one-byte message to a socket.
- */
-int send_char_msg( Display *dpy, int i, char msg )
-{
- return send_msg( dpy, i, &msg, sizeof(char));
-}
-
-
-/**
- * \brief Block and receive a message from a socket connection.
- *
- * \param dpy the display handle.
- * \param connection the index in dpy->fd of the socket connection.
- * \param msg storage for the received message.
- * \param msg_size the number of bytes to read.
- *
- * \internal
- * Block and read from the connection's file descriptor
- * until msg_size bytes have been received.
- *
- * Only called from welcome_message_part().
- */
-int blocking_read( Display *dpy, int connection,
- char *msg, size_t msg_size )
-{
- int i, r;
-
- for (i = 0 ; i < msg_size ; i += r) {
- r = read(dpy->fd[connection].fd, msg + i, msg_size - i);
- if (r < 1) {
- fprintf(stderr, "blocking_read: %d %s\n", r, strerror(errno));
- shut_fd(dpy,connection);
- return False;
- }
- }
-
- return True;
-}
-
-/**
- * \brief Send/receive a part of the welcome message.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- * \param msg storage for the sent/received message.
- * \param sz the number of bytes to write/read.
- *
- * \return True on success, or False on failure.
- *
- * This function is called by welcome_message_part(), to either send or receive
- * (via blocking_read()) part of the welcome message, according to whether
- * Display::IsClient is set.
- *
- * Each part of the welcome message on the wire consists of a count and then the
- * actual message data with that number of bytes.
- */
-static int welcome_message_part( Display *dpy, int i, void **msg, int sz )
-{
- if (dpy->IsClient) {
- int sz;
- if (!blocking_read( dpy, i, (char *)&sz, sizeof(sz))) return False;
- if (!*msg) *msg = malloc(sz);
- if (!*msg) return False;
- if (!blocking_read( dpy, i, *msg, sz )) return False;
- return sz;
- }
- else {
- if (!send_msg( dpy, i, &sz, sizeof(sz))) return False;
- if (!send_msg( dpy, i, *msg, sz )) return False;
- }
-
- return True;
-}
-
-/**
- * \brief Send/receive the welcome message.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- *
- * \return True on success, or False on failure.
- *
- * Using welcome_message_part(), sends/receives the client ID, the client
- * configuration details in DRIDriverContext::shared, and the driver private
- * message in DRIDriverContext::driverClientMsg.
- */
-static int welcome_message( Display *dpy, int i )
-{
- void *tmp = &dpy->driverContext.shared;
- int *clientid = dpy->IsClient ? &dpy->clientID : &i;
- int size;
-
- if (!welcome_message_part( dpy, i, (void **)&clientid, sizeof(*clientid)))
- return False;
-
- if (!welcome_message_part( dpy, i, &tmp, sizeof(dpy->driverContext.shared)))
- return False;
-
- size=welcome_message_part( dpy, i,
- (void **)&dpy->driverContext.driverClientMsg,
- dpy->driverContext.driverClientMsgSize );
-
- if (!size)
- return False;
-
- if (dpy->IsClient) {
- dpy->driverContext.driverClientMsgSize = size;
- }
- return True;
-}
-
-
-/**
- * \brief Handle a new client connection.
- *
- * \param dpy the display handle.
- *
- * \return True on success or False on failure.
- *
- * Accepts the connection, sets it in non-blocking operation, and finds a free
- * slot in Display::fd for it.
- */
-static int handle_new_client( Display *dpy )
-{
- struct sockaddr_un client_address;
- unsigned int l = sizeof(client_address);
- int r, i;
-
- r = accept(dpy->fd[0].fd, (struct sockaddr *) &client_address, &l);
- if (r < 0) {
- perror ("accept()");
- shut_fd(dpy,0);
- return False;
- }
-
- if (fcntl(r, F_SETFL, O_NONBLOCK) != 0) {
- perror("fcntl");
- close(r);
- return False;
- }
-
-
- /* Some rough & ready adaption of the XEvent semantics.
- */
- for (i = 1 ; i < dpy->nrFds ; i++) {
- if (dpy->fd[i].fd < 0) {
- XEvent *er = queue_event(dpy);
- if (!er) {
- close(r);
- return False;
- }
-
- dpy->fd[i].fd = r;
- er->xcreatewindow.type = CreateNotify;
- er->xcreatewindow.serial = 0;
- er->xcreatewindow.send_event = 0;
- er->xcreatewindow.display = dpy;
- er->xcreatewindow.window = (Window)i; /* fd slot == window, now? */
-
- /* Send the driver client message - this is expected as the
- * first message on a new connection. The recpient already
- * knows the size of the message.
- */
- welcome_message( dpy, i );
- return True;
- }
- }
-
-
- fprintf(stderr, "[miniglx] %s: Max nr clients exceeded\n", __FUNCTION__);
- close(r);
- return False;
-}
-
-/**
- * This routine "puffs out" the very basic communications between
- * client and server to full-sized X Events that can be handled by the
- * application.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- *
- * \return True on success or False on failure.
- *
- * \internal
- * Interprets the message (see msg) into a XEvent and advances the file FIFO
- * buffer.
- */
-static int
-handle_fifo_read( Display *dpy, int i )
-{
- drm_magic_t magic;
- int err;
-
- while (dpy->fd[i].readbuf_count) {
- char id = dpy->fd[i].readbuf[0];
- XEvent *er;
- int count = 1;
-
- if (dpy->IsClient) {
- switch (id) {
- /* The server has called XMapWindow on a client window */
- case _YouveGotFocus:
- er = queue_event(dpy);
- if (!er) return False;
- er->xmap.type = MapNotify;
- er->xmap.serial = 0;
- er->xmap.send_event = False;
- er->xmap.display = dpy;
- er->xmap.event = dpy->TheWindow;
- er->xmap.window = dpy->TheWindow;
- er->xmap.override_redirect = False;
- if (dpy->driver->notifyFocus)
- dpy->driver->notifyFocus( 1 );
- break;
-
- /* The server has called XMapWindow on a client window */
- case _RepaintPlease:
- er = queue_event(dpy);
- if (!er) return False;
- er->xexpose.type = Expose;
- er->xexpose.serial = 0;
- er->xexpose.send_event = False;
- er->xexpose.display = dpy;
- er->xexpose.window = dpy->TheWindow;
- if (dpy->rotateMode) {
- er->xexpose.x = dpy->TheWindow->y;
- er->xexpose.y = dpy->TheWindow->x;
- er->xexpose.width = dpy->TheWindow->h;
- er->xexpose.height = dpy->TheWindow->w;
- }
- else {
- er->xexpose.x = dpy->TheWindow->x;
- er->xexpose.y = dpy->TheWindow->y;
- er->xexpose.width = dpy->TheWindow->w;
- er->xexpose.height = dpy->TheWindow->h;
- }
- er->xexpose.count = 0;
- break;
-
- /* The server has called 'XUnmapWindow' on a client
- * window.
- */
- case _YouveLostFocus:
- er = queue_event(dpy);
- if (!er) return False;
- er->xunmap.type = UnmapNotify;
- er->xunmap.serial = 0;
- er->xunmap.send_event = False;
- er->xunmap.display = dpy;
- er->xunmap.event = dpy->TheWindow;
- er->xunmap.window = dpy->TheWindow;
- er->xunmap.from_configure = False;
- if (dpy->driver->notifyFocus)
- dpy->driver->notifyFocus( 0 );
- break;
-
- case _Authorize:
- dpy->authorized = True;
- break;
-
- default:
- fprintf(stderr, "Client received unhandled message type %d\n", id);
- shut_fd(dpy, i); /* Actually shuts down the client */
- return False;
- }
- }
- else {
- switch (id) {
- /* Lets the server know that the client is ready to render
- * (having called 'XMapWindow' locally).
- */
- case _CanIHaveFocus:
- er = queue_event(dpy);
- if (!er) return False;
- er->xmaprequest.type = MapRequest;
- er->xmaprequest.serial = 0;
- er->xmaprequest.send_event = False;
- er->xmaprequest.display = dpy;
- er->xmaprequest.parent = 0;
- er->xmaprequest.window = (Window)i;
- break;
-
- /* Both _YouveLostFocus and _IDontWantFocus generate unmap
- * events. The idea is that _YouveLostFocus lets the client
- * know that it has had focus revoked by the server, whereas
- * _IDontWantFocus lets the server know that the client has
- * unmapped its own window.
- */
- case _IDontWantFocus:
- er = queue_event(dpy);
- if (!er) return False;
- er->xunmap.type = UnmapNotify;
- er->xunmap.serial = 0;
- er->xunmap.send_event = False;
- er->xunmap.display = dpy;
- er->xunmap.event = (Window)i;
- er->xunmap.window = (Window)i;
- er->xunmap.from_configure = False;
- break;
-
- case _Authorize:
- /* is full message here yet? */
- if (dpy->fd[i].readbuf_count < count + sizeof(magic)) {
- count = 0;
- break;
- }
- memcpy(&magic, dpy->fd[i].readbuf + count, sizeof(magic));
- fprintf(stderr, "Authorize - magic %d\n", magic);
-
- err = drmAuthMagic(dpy->driverContext.drmFD, magic);
- count += sizeof(magic);
-
- send_char_msg( dpy, i, _Authorize );
- break;
-
- default:
- fprintf(stderr, "Server received unhandled message type %d\n", id);
- shut_fd(dpy, i); /* Generates DestroyNotify event */
- return False;
- }
- }
-
- dpy->fd[i].readbuf_count -= count;
-
- if (dpy->fd[i].readbuf_count) {
- memmove(dpy->fd[i].readbuf,
- dpy->fd[i].readbuf + count,
- dpy->fd[i].readbuf_count);
- }
- }
-
- return True;
-}
-
-/**
- * Handle a VT signal
- *
- * \param dpy display handle.
- *
- * The VT switches is detected by comparing Display::haveVT and
- * Display::hwActive. When loosing the VT the hardware lock is acquired, the
- * hardware is shutdown via a call to DRIDriverRec::shutdownHardware(), and the
- * VT released. When acquiring the VT back the hardware state is restored via a
- * call to DRIDriverRec::restoreHardware() and the hardware lock released.
- */
-static void __driHandleVtSignals( Display *dpy )
-{
- dpy->vtSignalFlag = 0;
-
- fprintf(stderr, "%s: haveVT %d hwActive %d\n", __FUNCTION__,
- dpy->haveVT, dpy->hwActive);
-
- if (!dpy->haveVT && dpy->hwActive) {
- /* Need to get lock and shutdown hardware */
- DRM_LIGHT_LOCK( dpy->driverContext.drmFD,
- dpy->driverContext.pSAREA,
- dpy->driverContext.serverContext );
- dpy->driver->shutdownHardware( &dpy->driverContext );
-
- /* Can now give up control of the VT */
- ioctl( dpy->ConsoleFD, VT_RELDISP, 1 );
- dpy->hwActive = 0;
- }
- else if (dpy->haveVT && !dpy->hwActive) {
- /* Get VT (wait??) */
- ioctl( dpy->ConsoleFD, VT_RELDISP, VT_ACTIVATE );
-
- /* restore HW state, release lock */
- dpy->driver->restoreHardware( &dpy->driverContext );
- DRM_UNLOCK( dpy->driverContext.drmFD,
- dpy->driverContext.pSAREA,
- dpy->driverContext.serverContext );
- dpy->hwActive = 1;
- }
-}
-
-
-#undef max
-#define max(x,y) ((x) > (y) ? (x) : (y))
-
-/**
- * Logic for the select() call.
- *
- * \param dpy display handle.
- * \param n highest fd in any set plus one.
- * \param rfds fd set to be watched for reading, or NULL to create one.
- * \param wfds fd set to be watched for writing, or NULL to create one.
- * \param xfds fd set to be watched for exceptions or error, or NULL to create one.
- * \param tv timeout value, or NULL for no timeout.
- *
- * \return number of file descriptors contained in the sets, or a negative number on failure.
- *
- * \note
- * This all looks pretty complex, but is necessary especially on the
- * server side to prevent a poorly-behaved client from causing the
- * server to block in a read or write and hence not service the other
- * clients.
- *
- * \sa
- * See select_tut in the Linux manual pages for more discussion.
- *
- * \internal
- * Creates and initializes the file descriptor sets by inspecting Display::fd
- * if these aren't passed in the function call. Calls select() and fulfill the
- * demands by trying to fill MiniGLXConnection::readbuf and draining
- * MiniGLXConnection::writebuf.
- * The server fd[0] is handled specially for new connections, by calling
- * handle_new_client().
- *
- */
-int
-__miniglx_Select( Display *dpy, int n, fd_set *rfds, fd_set *wfds, fd_set *xfds,
- struct timeval *tv )
-{
- int i;
- int retval;
- fd_set my_rfds, my_wfds;
- struct timeval my_tv;
-
- if (!rfds) {
- rfds = &my_rfds;
- FD_ZERO(rfds);
- }
-
- if (!wfds) {
- wfds = &my_wfds;
- FD_ZERO(wfds);
- }
-
- /* Don't block if there are events queued. Review this if the
- * flush in XMapWindow is changed to blocking. (Test case:
- * miniglxtest).
- */
- if (dpy->eventqueue.head != dpy->eventqueue.tail) {
- my_tv.tv_sec = my_tv.tv_usec = 0;
- tv = &my_tv;
- }
-
- for (i = 0 ; i < dpy->nrFds; i++) {
- if (dpy->fd[i].fd < 0)
- continue;
-
- if (dpy->fd[i].writebuf_count)
- FD_SET(dpy->fd[i].fd, wfds);
-
- if (dpy->fd[i].readbuf_count < MINIGLX_BUF_SIZE)
- FD_SET(dpy->fd[i].fd, rfds);
-
- n = max(n, dpy->fd[i].fd + 1);
- }
-
- if (dpy->vtSignalFlag)
- __driHandleVtSignals( dpy );
-
- retval = select( n, rfds, wfds, xfds, tv );
-
- if (dpy->vtSignalFlag) {
- int tmp = errno;
- __driHandleVtSignals( dpy );
- errno = tmp;
- }
-
- if (retval < 0) {
- FD_ZERO(rfds);
- FD_ZERO(wfds);
- return retval;
- }
-
- /* Handle server fd[0] specially on the server - accept new client
- * connections.
- */
- if (!dpy->IsClient) {
- if (FD_ISSET(dpy->fd[0].fd, rfds)) {
- FD_CLR(dpy->fd[0].fd, rfds);
- handle_new_client( dpy );
- }
- }
-
- /* Otherwise, try and fill readbuffer and drain writebuffer:
- */
- for (i = 0 ; i < dpy->nrFds ; i++) {
- if (dpy->fd[i].fd < 0)
- continue;
-
- /* If there aren't any event slots left, don't examine
- * any more file events. This will prevent lost events.
- */
- if (dpy->eventqueue.head ==
- ((dpy->eventqueue.tail + 1) & MINIGLX_EVENT_QUEUE_MASK)) {
- fprintf(stderr, "leaving event loop as event queue is full\n");
- return retval;
- }
-
- if (FD_ISSET(dpy->fd[i].fd, wfds)) {
- int r = write(dpy->fd[i].fd,
- dpy->fd[i].writebuf,
- dpy->fd[i].writebuf_count);
-
- if (r < 1)
- shut_fd(dpy,i);
- else {
- dpy->fd[i].writebuf_count -= r;
- if (dpy->fd[i].writebuf_count) {
- memmove(dpy->fd[i].writebuf,
- dpy->fd[i].writebuf + r,
- dpy->fd[i].writebuf_count);
- }
- }
- }
-
- if (FD_ISSET(dpy->fd[i].fd, rfds)) {
- int r = read(dpy->fd[i].fd,
- dpy->fd[i].readbuf + dpy->fd[i].readbuf_count,
- MINIGLX_BUF_SIZE - dpy->fd[i].readbuf_count);
-
- if (r < 1)
- shut_fd(dpy,i);
- else {
- dpy->fd[i].readbuf_count += r;
-
- handle_fifo_read( dpy, i );
- }
- }
- }
-
- return retval;
-}
-
-/**
- * \brief Handle socket events.
- *
- * \param dpy the display handle.
- * \param nonblock whether to return immediately or wait for an event.
- *
- * \return True on success, False on failure. Aborts on critical error.
- *
- * \internal
- * This function is the select() main loop.
- */
-int handle_fd_events( Display *dpy, int nonblock )
-{
- while (1) {
- struct timeval tv = {0, 0};
- int r = __miniglx_Select( dpy, 0, 0, 0, 0, nonblock ? &tv : 0 );
- if (r >= 0)
- return True;
- if (errno == EINTR || errno == EAGAIN)
- continue;
- perror ("select()");
- exit (1);
- }
-}
-
-/**
- * Initializes the connections.
- *
- * \param dpy the display handle.
- *
- * \return True on success or False on failure.
- *
- * Allocates and initializes the Display::fd array and create a Unix socket on
- * the first entry. For a server binds the socket to a filename and listen for
- * connections. For a client connects to the server and waits for a welcome
- * message. Sets the socket in nonblocking mode.
- */
-int __miniglx_open_connections( Display *dpy )
-{
- struct sockaddr_un sa;
- int i;
-
- dpy->nrFds = dpy->IsClient ? 1 : MINIGLX_MAX_SERVER_FDS;
- dpy->fd = calloc(1, dpy->nrFds * sizeof(struct MiniGLXConnection));
- if (!dpy->fd)
- return False;
-
- for (i = 0 ; i < dpy->nrFds ; i++)
- dpy->fd[i].fd = -1;
-
- if (!dpy->IsClient) {
- if (unlink(MINIGLX_FIFO_NAME) != 0 && errno != ENOENT) {
- perror("unlink " MINIGLX_FIFO_NAME);
- return False;
- }
-
- }
-
- /* Create a Unix socket -- Note this is *not* a network connection!
- */
- dpy->fd[0].fd = socket(PF_UNIX, SOCK_STREAM, 0);
- if (dpy->fd[0].fd < 0) {
- perror("socket " MINIGLX_FIFO_NAME);
- return False;
- }
-
- memset(&sa, 0, sizeof(sa));
- sa.sun_family = AF_UNIX;
- strcpy(sa.sun_path, MINIGLX_FIFO_NAME);
-
- if (dpy->IsClient) {
- /* Connect to server
- */
- if (connect(dpy->fd[0].fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) {
- perror("connect");
- shut_fd(dpy,0);
- return False;
- }
-
- /* Wait for configuration messages from the server.
- */
- welcome_message( dpy, 0 );
- }
- else {
- mode_t tmp = umask( 0000 ); /* open to everybody ? */
-
- /* Bind socket to our filename
- */
- if (bind(dpy->fd[0].fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) {
- perror("bind");
- shut_fd(dpy,0);
- return False;
- }
-
- umask( tmp );
-
- /* Listen for connections
- */
- if (listen(dpy->fd[0].fd, 5) != 0) {
- perror("listen");
- shut_fd(dpy,0);
- return False;
- }
- }
-
- if (fcntl(dpy->fd[0].fd, F_SETFL, O_NONBLOCK) != 0) {
- perror("fcntl");
- shut_fd(dpy,0);
- return False;
- }
-
-
- return True;
-}
-
-
-/**
- * Frees the connections initialized by __miniglx_open_connections().
- *
- * \param dpy the display handle.
- */
-void __miniglx_close_connections( Display *dpy )
-{
- int i;
-
- for (i = 0 ; i < dpy->nrFds ; i++) {
- if (dpy->fd[i].fd >= 0) {
- shutdown (dpy->fd[i].fd, SHUT_RDWR);
- close (dpy->fd[i].fd);
- }
- }
-
- dpy->nrFds = 0;
- free(dpy->fd);
-}
-
-
-/**
- * Set a drawable flag.
- *
- * \param dpy the display handle.
- * \param w drawable (window).
- * \param flag flag.
- *
- * Sets the specified drawable flag in the SAREA and increment its stamp while
- * holding the light hardware lock.
- */
-static void set_drawable_flag( Display *dpy, int w, int flag )
-{
- if (dpy->driverContext.pSAREA) {
- if (dpy->hwActive)
- DRM_LIGHT_LOCK( dpy->driverContext.drmFD,
- dpy->driverContext.pSAREA,
- dpy->driverContext.serverContext );
-
- dpy->driverContext.pSAREA->drawableTable[w].stamp++;
- dpy->driverContext.pSAREA->drawableTable[w].flags = flag;
-
- if (dpy->hwActive)
- DRM_UNLOCK( dpy->driverContext.drmFD,
- dpy->driverContext.pSAREA,
- dpy->driverContext.serverContext );
- }
-}
-
-
-
-/**
- * \brief Map Window.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param w the window handle.
- *
- * If called by a client, sends a request for focus to the server. If
- * called by the server, will generate a MapNotify and Expose event at
- * the client.
- *
- */
-void
-XMapWindow( Display *dpy, Window w )
-{
- if (dpy->IsClient)
- send_char_msg( dpy, 0, _CanIHaveFocus );
- else {
- set_drawable_flag( dpy, (int)w, 1 );
- send_char_msg( dpy, (int)w, _YouveGotFocus );
- send_char_msg( dpy, (int)w, _RepaintPlease );
- dpy->TheWindow = w;
- }
- handle_fd_events( dpy, 0 ); /* flush write queue */
-}
-
-/**
- * \brief Unmap Window.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param w the window handle.
- *
- * Called from the client: Lets the server know that the window won't
- * be updated anymore.
- *
- * Called from the server: Tells the specified client that it no longer
- * holds the focus.
- */
-void
-XUnmapWindow( Display *dpy, Window w )
-{
- if (dpy->IsClient) {
- send_char_msg( dpy, 0, _IDontWantFocus );
- }
- else {
- dpy->TheWindow = 0;
- set_drawable_flag( dpy, (int)w, 0 );
- send_char_msg( dpy, (int)w, _YouveLostFocus );
- }
- handle_fd_events( dpy, 0 ); /* flush write queue */
-}
-
-
-/**
- * \brief Block and wait for next X event.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param event_return a pointer to an XEvent structure for the returned data.
- *
- * Wait until there is a new XEvent pending.
- */
-int XNextEvent(Display *dpy, XEvent *event_return)
-{
- for (;;) {
- if ( dpy->eventqueue.head != dpy->eventqueue.tail )
- return dequeue_event( dpy, event_return );
-
- handle_fd_events( dpy, 0 );
- }
-}
-
-/**
- * \brief Non-blocking check for next X event.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param event_mask ignored.
- * \param event_return a pointer to an XEvent structure for the returned data.
- *
- * Check if there is a new XEvent pending. Note that event_mask is
- * ignored and any pending event will be returned.
- */
-Bool XCheckMaskEvent(Display *dpy, long event_mask, XEvent *event_return)
-{
- if ( dpy->eventqueue.head != dpy->eventqueue.tail )
- return dequeue_event( dpy, event_return );
-
- handle_fd_events( dpy, 1 );
-
- return dequeue_event( dpy, event_return );
-}
projects / profile / ivi / mesa.git / commitdiff