/* * Copyright (C) 1999-2002 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. */ /* * This program is a work-alike of the IRIX glxinfo program. * Command line options: * -t print wide table * -v print verbose information * -display DisplayName specify the X display to interogate * -b only print ID of "best" visual on screen 0 * -i use indirect rendering connection only * -l print interesting OpenGL limits (added 5 Sep 2002) * * Brian Paul 26 January 2000 */ #define DO_GLU /* may want to remove this for easier XFree86 building? */ #include #include #include #ifdef DO_GLU #include #endif #include #include #include #include #ifndef GLX_NONE_EXT #define GLX_NONE_EXT 0x8000 #endif #ifndef GLX_TRANSPARENT_RGB #define GLX_TRANSPARENT_RGB 0x8008 #endif typedef enum { Normal, Wide, Verbose } InfoMode; struct visual_attribs { /* X visual attribs */ int id; int klass; int depth; int redMask, greenMask, blueMask; int colormapSize; int bitsPerRGB; /* GL visual attribs */ int supportsGL; int transparentType; int transparentRedValue; int transparentGreenValue; int transparentBlueValue; int transparentAlphaValue; int transparentIndexValue; int bufferSize; int level; int rgba; int doubleBuffer; int stereo; int auxBuffers; int redSize, greenSize, blueSize, alphaSize; int depthSize; int stencilSize; int accumRedSize, accumGreenSize, accumBlueSize, accumAlphaSize; int numSamples, numMultisample; int visualCaveat; }; /* * Print a list of extensions, with word-wrapping. */ static void print_extension_list(const char *ext) { const char *indentString = " "; const int indent = 4; const int max = 79; int width, i, j; if (!ext || !ext[0]) return; width = indent; printf(indentString); i = j = 0; while (1) { if (ext[j] == ' ' || ext[j] == 0) { /* found end of an extension name */ const int len = j - i; if (width + len > max) { /* start a new line */ printf("\n"); width = indent; printf(indentString); } /* print the extension name between ext[i] and ext[j] */ while (i < j) { printf("%c", ext[i]); i++; } /* either we're all done, or we'll continue with next extension */ width += len + 1; if (ext[j] == 0) { break; } else { i++; j++; if (ext[j] == 0) break; printf(", "); width += 2; } } j++; } printf("\n"); } static void print_display_info(Display *dpy) { printf("name of display: %s\n", DisplayString(dpy)); } static void print_limits(void) { struct token_name { GLuint count; GLenum token; const char *name; }; static const struct token_name limits[] = { { 1, GL_MAX_ATTRIB_STACK_DEPTH, "GL_MAX_ATTRIB_STACK_DEPTH" }, { 1, GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, "GL_MAX_CLIENT_ATTRIB_STACK_DEPTH" }, { 1, GL_MAX_CLIP_PLANES, "GL_MAX_CLIP_PLANES" }, { 1, GL_MAX_COLOR_MATRIX_STACK_DEPTH, "GL_MAX_COLOR_MATRIX_STACK_DEPTH" }, { 1, GL_MAX_ELEMENTS_VERTICES, "GL_MAX_ELEMENTS_VERTICES" }, { 1, GL_MAX_ELEMENTS_INDICES, "GL_MAX_ELEMENTS_INDICES" }, { 1, GL_MAX_EVAL_ORDER, "GL_MAX_EVAL_ORDER" }, { 1, GL_MAX_LIGHTS, "GL_MAX_LIGHTS" }, { 1, GL_MAX_LIST_NESTING, "GL_MAX_LIST_NESTING" }, { 1, GL_MAX_MODELVIEW_STACK_DEPTH, "GL_MAX_MODELVIEW_STACK_DEPTH" }, { 1, GL_MAX_NAME_STACK_DEPTH, "GL_MAX_NAME_STACK_DEPTH" }, { 1, GL_MAX_PIXEL_MAP_TABLE, "GL_MAX_PIXEL_MAP_TABLE" }, { 1, GL_MAX_PROJECTION_STACK_DEPTH, "GL_MAX_PROJECTION_STACK_DEPTH" }, { 1, GL_MAX_TEXTURE_STACK_DEPTH, "GL_MAX_TEXTURE_STACK_DEPTH" }, { 1, GL_MAX_TEXTURE_SIZE, "GL_MAX_TEXTURE_SIZE" }, { 1, GL_MAX_3D_TEXTURE_SIZE, "GL_MAX_3D_TEXTURE_SIZE" }, { 1, GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, "GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB" }, { 1, GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, "GL_MAX_RECTANGLE_TEXTURE_SIZE_NV" }, { 1, GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, "GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB" }, { 1, GL_MAX_TEXTURE_UNITS_ARB, "GL_MAX_TEXTURE_UNITS_ARB" }, { 1, GL_MAX_TEXTURE_LOD_BIAS_EXT, "GL_MAX_TEXTURE_LOD_BIAS_EXT" }, { 1, GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, "GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT" }, { 2, GL_MAX_VIEWPORT_DIMS, "GL_MAX_VIEWPORT_DIMS" }, { 2, GL_ALIASED_LINE_WIDTH_RANGE, "GL_ALIASED_LINE_WIDTH_RANGE" }, { 2, GL_SMOOTH_LINE_WIDTH_RANGE, "GL_SMOOTH_LINE_WIDTH_RANGE" }, { 2, GL_ALIASED_POINT_SIZE_RANGE, "GL_ALIASED_POINT_SIZE_RANGE" }, { 2, GL_SMOOTH_POINT_SIZE_RANGE, "GL_SMOOTH_POINT_SIZE_RANGE" }, { 0, (GLenum) 0, NULL } }; GLint i, max[2]; printf("OpenGL limits:\n"); for (i = 0; limits[i].count; i++) { glGetIntegerv(limits[i].token, max); if (glGetError() == GL_NONE) { if (limits[i].count == 1) printf(" %s = %d\n", limits[i].name, max[0]); else /* XXX fix if we ever query something with more than 2 values */ printf(" %s = %d, %d\n", limits[i].name, max[0], max[1]); } } } static void print_screen_info(Display *dpy, int scrnum, Bool allowDirect, GLboolean limits) { Window win; int attribSingle[] = { GLX_RGBA, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1, None }; int attribDouble[] = { GLX_RGBA, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1, GLX_DOUBLEBUFFER, None }; XSetWindowAttributes attr; unsigned long mask; Window root; GLXContext ctx; XVisualInfo *visinfo; int width = 100, height = 100; root = RootWindow(dpy, scrnum); visinfo = glXChooseVisual(dpy, scrnum, attribSingle); if (!visinfo) { visinfo = glXChooseVisual(dpy, scrnum, attribDouble); if (!visinfo) { fprintf(stderr, "Error: couldn't find RGB GLX visual\n"); return; } } attr.background_pixel = 0; attr.border_pixel = 0; attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone); attr.event_mask = StructureNotifyMask | ExposureMask; mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; win = XCreateWindow(dpy, root, 0, 0, width, height, 0, visinfo->depth, InputOutput, visinfo->visual, mask, &attr); ctx = glXCreateContext( dpy, visinfo, NULL, allowDirect ); if (!ctx) { fprintf(stderr, "Error: glXCreateContext failed\n"); XDestroyWindow(dpy, win); return; } if (glXMakeCurrent(dpy, win, ctx)) { const char *serverVendor = glXQueryServerString(dpy, scrnum, GLX_VENDOR); const char *serverVersion = glXQueryServerString(dpy, scrnum, GLX_VERSION); const char *serverExtensions = glXQueryServerString(dpy, scrnum, GLX_EXTENSIONS); const char *clientVendor = glXGetClientString(dpy, GLX_VENDOR); const char *clientVersion = glXGetClientString(dpy, GLX_VERSION); const char *clientExtensions = glXGetClientString(dpy, GLX_EXTENSIONS); const char *glxExtensions = glXQueryExtensionsString(dpy, scrnum); const char *glVendor = (const char *) glGetString(GL_VENDOR); const char *glRenderer = (const char *) glGetString(GL_RENDERER); const char *glVersion = (const char *) glGetString(GL_VERSION); const char *glExtensions = (const char *) glGetString(GL_EXTENSIONS); char *displayName = NULL; char *colon = NULL, *period = NULL; #ifdef DO_GLU const char *gluVersion = (const char *) gluGetString(GLU_VERSION); const char *gluExtensions = (const char *) gluGetString(GLU_EXTENSIONS); #endif /* Strip the screen number from the display name, if present. */ if (!(displayName = (char *) malloc(strlen(DisplayString(dpy)) + 1))) { fprintf(stderr, "Error: malloc() failed\n"); exit(1); } strcpy(displayName, DisplayString(dpy)); colon = strrchr(displayName, ':'); if (colon) { period = strchr(colon, '.'); if (period) *period = '\0'; } printf("display: %s screen: %d\n", displayName, scrnum); free(displayName); printf("direct rendering: %s\n", glXIsDirect(dpy, ctx) ? "Yes" : "No"); printf("server glx vendor string: %s\n", serverVendor); printf("server glx version string: %s\n", serverVersion); printf("server glx extensions:\n"); print_extension_list(serverExtensions); printf("client glx vendor string: %s\n", clientVendor); printf("client glx version string: %s\n", clientVersion); printf("client glx extensions:\n"); print_extension_list(clientExtensions); printf("GLX extensions:\n"); print_extension_list(glxExtensions); printf("OpenGL vendor string: %s\n", glVendor); printf("OpenGL renderer string: %s\n", glRenderer); printf("OpenGL version string: %s\n", glVersion); printf("OpenGL extensions:\n"); print_extension_list(glExtensions); if (limits) print_limits(); #ifdef DO_GLU printf("glu version: %s\n", gluVersion); printf("glu extensions:\n"); print_extension_list(gluExtensions); #endif } else { fprintf(stderr, "Error: glXMakeCurrent failed\n"); } glXDestroyContext(dpy, ctx); XDestroyWindow(dpy, win); } static const char * visual_class_name(int cls) { switch (cls) { case StaticColor: return "StaticColor"; case PseudoColor: return "PseudoColor"; case StaticGray: return "StaticGray"; case GrayScale: return "GrayScale"; case TrueColor: return "TrueColor"; case DirectColor: return "DirectColor"; default: return ""; } } static const char * visual_class_abbrev(int cls) { switch (cls) { case StaticColor: return "sc"; case PseudoColor: return "pc"; case StaticGray: return "sg"; case GrayScale: return "gs"; case TrueColor: return "tc"; case DirectColor: return "dc"; default: return ""; } } static void get_visual_attribs(Display *dpy, XVisualInfo *vInfo, struct visual_attribs *attribs) { const char *ext = glXQueryExtensionsString(dpy, vInfo->screen); memset(attribs, 0, sizeof(struct visual_attribs)); attribs->id = vInfo->visualid; #if defined(__cplusplus) || defined(c_plusplus) attribs->klass = vInfo->c_class; #else attribs->klass = vInfo->class; #endif attribs->depth = vInfo->depth; attribs->redMask = vInfo->red_mask; attribs->greenMask = vInfo->green_mask; attribs->blueMask = vInfo->blue_mask; attribs->colormapSize = vInfo->colormap_size; attribs->bitsPerRGB = vInfo->bits_per_rgb; if (glXGetConfig(dpy, vInfo, GLX_USE_GL, &attribs->supportsGL) != 0) return; glXGetConfig(dpy, vInfo, GLX_BUFFER_SIZE, &attribs->bufferSize); glXGetConfig(dpy, vInfo, GLX_LEVEL, &attribs->level); glXGetConfig(dpy, vInfo, GLX_RGBA, &attribs->rgba); glXGetConfig(dpy, vInfo, GLX_DOUBLEBUFFER, &attribs->doubleBuffer); glXGetConfig(dpy, vInfo, GLX_STEREO, &attribs->stereo); glXGetConfig(dpy, vInfo, GLX_AUX_BUFFERS, &attribs->auxBuffers); glXGetConfig(dpy, vInfo, GLX_RED_SIZE, &attribs->redSize); glXGetConfig(dpy, vInfo, GLX_GREEN_SIZE, &attribs->greenSize); glXGetConfig(dpy, vInfo, GLX_BLUE_SIZE, &attribs->blueSize); glXGetConfig(dpy, vInfo, GLX_ALPHA_SIZE, &attribs->alphaSize); glXGetConfig(dpy, vInfo, GLX_DEPTH_SIZE, &attribs->depthSize); glXGetConfig(dpy, vInfo, GLX_STENCIL_SIZE, &attribs->stencilSize); glXGetConfig(dpy, vInfo, GLX_ACCUM_RED_SIZE, &attribs->accumRedSize); glXGetConfig(dpy, vInfo, GLX_ACCUM_GREEN_SIZE, &attribs->accumGreenSize); glXGetConfig(dpy, vInfo, GLX_ACCUM_BLUE_SIZE, &attribs->accumBlueSize); glXGetConfig(dpy, vInfo, GLX_ACCUM_ALPHA_SIZE, &attribs->accumAlphaSize); /* get transparent pixel stuff */ glXGetConfig(dpy, vInfo,GLX_TRANSPARENT_TYPE, &attribs->transparentType); if (attribs->transparentType == GLX_TRANSPARENT_RGB) { glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_RED_VALUE, &attribs->transparentRedValue); glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_GREEN_VALUE, &attribs->transparentGreenValue); glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_BLUE_VALUE, &attribs->transparentBlueValue); glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_ALPHA_VALUE, &attribs->transparentAlphaValue); } else if (attribs->transparentType == GLX_TRANSPARENT_INDEX) { glXGetConfig(dpy, vInfo, GLX_TRANSPARENT_INDEX_VALUE, &attribs->transparentIndexValue); } /* multisample attribs */ #ifdef GLX_ARB_multisample if (strstr("GLX_ARB_multisample", ext) == 0) { glXGetConfig(dpy, vInfo, GLX_SAMPLE_BUFFERS_ARB, &attribs->numMultisample); glXGetConfig(dpy, vInfo, GLX_SAMPLES_ARB, &attribs->numSamples); } #endif else { attribs->numSamples = 0; attribs->numMultisample = 0; } #if defined(GLX_EXT_visual_rating) if (ext && strstr(ext, "GLX_EXT_visual_rating")) { glXGetConfig(dpy, vInfo, GLX_VISUAL_CAVEAT_EXT, &attribs->visualCaveat); } else { attribs->visualCaveat = GLX_NONE_EXT; } #else attribs->visualCaveat = 0; #endif } static void print_visual_attribs_verbose(const struct visual_attribs *attribs) { printf("Visual ID: %x depth=%d class=%s\n", attribs->id, attribs->depth, visual_class_name(attribs->klass)); printf(" bufferSize=%d level=%d renderType=%s doubleBuffer=%d stereo=%d\n", attribs->bufferSize, attribs->level, attribs->rgba ? "rgba" : "ci", attribs->doubleBuffer, attribs->stereo); printf(" rgba: redSize=%d greenSize=%d blueSize=%d alphaSize=%d\n", attribs->redSize, attribs->greenSize, attribs->blueSize, attribs->alphaSize); printf(" auxBuffers=%d depthSize=%d stencilSize=%d\n", attribs->auxBuffers, attribs->depthSize, attribs->stencilSize); printf(" accum: redSize=%d greenSize=%d blueSize=%d alphaSize=%d\n", attribs->accumRedSize, attribs->accumGreenSize, attribs->accumBlueSize, attribs->accumAlphaSize); printf(" multiSample=%d multiSampleBuffers=%d\n", attribs->numSamples, attribs->numMultisample); #ifdef GLX_EXT_visual_rating if (attribs->visualCaveat == GLX_NONE_EXT || attribs->visualCaveat == 0) printf(" visualCaveat=None\n"); else if (attribs->visualCaveat == GLX_SLOW_VISUAL_EXT) printf(" visualCaveat=Slow\n"); else if (attribs->visualCaveat == GLX_NON_CONFORMANT_VISUAL_EXT) printf(" visualCaveat=Nonconformant\n"); #endif if (attribs->transparentType == GLX_NONE) { printf(" Opaque.\n"); } else if (attribs->transparentType == GLX_TRANSPARENT_RGB) { printf(" Transparent RGB: Red=%d Green=%d Blue=%d Alpha=%d\n",attribs->transparentRedValue,attribs->transparentGreenValue,attribs->transparentBlueValue,attribs->transparentAlphaValue); } else if (attribs->transparentType == GLX_TRANSPARENT_INDEX) { printf(" Transparent index=%d\n",attribs->transparentIndexValue); } } static void print_visual_attribs_short_header(void) { printf(" visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav\n"); printf(" id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat\n"); printf("----------------------------------------------------------------------\n"); } static void print_visual_attribs_short(const struct visual_attribs *attribs) { char *caveat = NULL; #ifdef GLX_EXT_visual_rating if (attribs->visualCaveat == GLX_NONE_EXT || attribs->visualCaveat == 0) caveat = "None"; else if (attribs->visualCaveat == GLX_SLOW_VISUAL_EXT) caveat = "Slow"; else if (attribs->visualCaveat == GLX_NON_CONFORMANT_VISUAL_EXT) caveat = "Ncon"; else caveat = "None"; #else caveat = "None"; #endif printf("0x%2x %2d %2s %2d %2d %2d %1s %2s %2s %2d %2d %2d %2d %2d %2d %2d", attribs->id, attribs->depth, visual_class_abbrev(attribs->klass), attribs->transparentType != GLX_NONE, attribs->bufferSize, attribs->level, attribs->rgba ? "r" : "c", attribs->doubleBuffer ? "y" : ".", attribs->stereo ? "y" : ".", attribs->redSize, attribs->greenSize, attribs->blueSize, attribs->alphaSize, attribs->auxBuffers, attribs->depthSize, attribs->stencilSize ); printf(" %2d %2d %2d %2d %2d %1d %s\n", attribs->accumRedSize, attribs->accumGreenSize, attribs->accumBlueSize, attribs->accumAlphaSize, attribs->numSamples, attribs->numMultisample, caveat ); } static void print_visual_attribs_long_header(void) { printf("Vis Vis Visual Trans buff lev render DB ste r g b a aux dep ste accum buffers MS MS\n"); printf(" ID Depth Type parent size el type reo sz sz sz sz buf th ncl r g b a num bufs\n"); printf("----------------------------------------------------------------------------------------------------\n"); } static void print_visual_attribs_long(const struct visual_attribs *attribs) { printf("0x%2x %2d %-11s %2d %2d %2d %4s %3d %3d %3d %3d %3d %3d", attribs->id, attribs->depth, visual_class_name(attribs->klass), attribs->transparentType != GLX_NONE, attribs->bufferSize, attribs->level, attribs->rgba ? "rgba" : "ci ", attribs->doubleBuffer, attribs->stereo, attribs->redSize, attribs->greenSize, attribs->blueSize, attribs->alphaSize ); printf(" %3d %4d %2d %3d %3d %3d %3d %2d %2d\n", attribs->auxBuffers, attribs->depthSize, attribs->stencilSize, attribs->accumRedSize, attribs->accumGreenSize, attribs->accumBlueSize, attribs->accumAlphaSize, attribs->numSamples, attribs->numMultisample ); } static void print_visual_info(Display *dpy, int scrnum, InfoMode mode) { XVisualInfo theTemplate; XVisualInfo *visuals; int numVisuals; long mask; int i; /* get list of all visuals on this screen */ theTemplate.screen = scrnum; mask = VisualScreenMask; visuals = XGetVisualInfo(dpy, mask, &theTemplate, &numVisuals); if (mode == Verbose) { for (i = 0; i < numVisuals; i++) { struct visual_attribs attribs; get_visual_attribs(dpy, &visuals[i], &attribs); print_visual_attribs_verbose(&attribs); } } else if (mode == Normal) { print_visual_attribs_short_header(); for (i = 0; i < numVisuals; i++) { struct visual_attribs attribs; get_visual_attribs(dpy, &visuals[i], &attribs); print_visual_attribs_short(&attribs); } } else if (mode == Wide) { print_visual_attribs_long_header(); for (i = 0; i < numVisuals; i++) { struct visual_attribs attribs; get_visual_attribs(dpy, &visuals[i], &attribs); print_visual_attribs_long(&attribs); } } XFree(visuals); } /* * Stand-alone Mesa doesn't really implement the GLX protocol so it * doesn't really know the GLX attributes associated with an X visual. * The first time a visual is presented to Mesa's pseudo-GLX it * attaches ancilliary buffers to it (like depth and stencil). * But that usually only works if glXChooseVisual is used. * This function calls glXChooseVisual() to sort of "prime the pump" * for Mesa's GLX so that the visuals that get reported actually * reflect what applications will see. * This has no effect when using true GLX. */ static void mesa_hack(Display *dpy, int scrnum) { static int attribs[] = { GLX_RGBA, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1, GLX_BLUE_SIZE, 1, GLX_DEPTH_SIZE, 1, GLX_STENCIL_SIZE, 1, GLX_ACCUM_RED_SIZE, 1, GLX_ACCUM_GREEN_SIZE, 1, GLX_ACCUM_BLUE_SIZE, 1, GLX_ACCUM_ALPHA_SIZE, 1, GLX_DOUBLEBUFFER, None }; XVisualInfo *visinfo; visinfo = glXChooseVisual(dpy, scrnum, attribs); if (visinfo) XFree(visinfo); } /* * Examine all visuals to find the so-called best one. * We prefer deepest RGBA buffer with depth, stencil and accum * that has no caveats. */ static int find_best_visual(Display *dpy, int scrnum) { XVisualInfo theTemplate; XVisualInfo *visuals; int numVisuals; long mask; int i; struct visual_attribs bestVis; /* get list of all visuals on this screen */ theTemplate.screen = scrnum; mask = VisualScreenMask; visuals = XGetVisualInfo(dpy, mask, &theTemplate, &numVisuals); /* init bestVis with first visual info */ get_visual_attribs(dpy, &visuals[0], &bestVis); /* try to find a "better" visual */ for (i = 1; i < numVisuals; i++) { struct visual_attribs vis; get_visual_attribs(dpy, &visuals[i], &vis); /* always skip visuals with caveats */ if (vis.visualCaveat != GLX_NONE_EXT) continue; /* see if this vis is better than bestVis */ if ((!bestVis.supportsGL && vis.supportsGL) || (bestVis.visualCaveat != GLX_NONE_EXT) || (!bestVis.rgba && vis.rgba) || (!bestVis.doubleBuffer && vis.doubleBuffer) || (bestVis.redSize < vis.redSize) || (bestVis.greenSize < vis.greenSize) || (bestVis.blueSize < vis.blueSize) || (bestVis.alphaSize < vis.alphaSize) || (bestVis.depthSize < vis.depthSize) || (bestVis.stencilSize < vis.stencilSize) || (bestVis.accumRedSize < vis.accumRedSize)) { /* found a better visual */ bestVis = vis; } } XFree(visuals); return bestVis.id; } static void usage(void) { printf("Usage: glxinfo [-v] [-t] [-h] [-i] [-b] [-display ]\n"); printf("\t-v: Print visuals info in verbose form.\n"); printf("\t-t: Print verbose table.\n"); printf("\t-display : Print GLX visuals on specified server.\n"); printf("\t-h: This information.\n"); printf("\t-i: Force an indirect rendering context.\n"); printf("\t-b: Find the 'best' visual and print it's number.\n"); printf("\t-l: Print interesting OpenGL limits.\n"); } int main(int argc, char *argv[]) { char *displayName = NULL; Display *dpy; int numScreens, scrnum; InfoMode mode = Normal; GLboolean findBest = GL_FALSE; GLboolean limits = GL_FALSE; Bool allowDirect = True; int i; for (i = 1; i < argc; i++) { if (strcmp(argv[i], "-display") == 0 && i + 1 < argc) { displayName = argv[i + 1]; i++; } else if (strcmp(argv[i], "-t") == 0) { mode = Wide; } else if (strcmp(argv[i], "-v") == 0) { mode = Verbose; } else if (strcmp(argv[i], "-b") == 0) { findBest = GL_TRUE; } else if (strcmp(argv[i], "-i") == 0) { allowDirect = False; } else if (strcmp(argv[i], "-l") == 0) { limits = GL_TRUE; } else if (strcmp(argv[i], "-h") == 0) { usage(); return 0; } else { printf("Unknown option `%s'\n", argv[i]); usage(); return 0; } } dpy = XOpenDisplay(displayName); if (!dpy) { fprintf(stderr, "Error: unable to open display %s\n", displayName); return -1; } if (findBest) { int b; mesa_hack(dpy, 0); b = find_best_visual(dpy, 0); printf("%d\n", b); } else { numScreens = ScreenCount(dpy); print_display_info(dpy); for (scrnum = 0; scrnum < numScreens; scrnum++) { mesa_hack(dpy, scrnum); print_screen_info(dpy, scrnum, allowDirect, limits); printf("\n"); print_visual_info(dpy, scrnum, mode); if (scrnum + 1 < numScreens) printf("\n\n"); } } XCloseDisplay(dpy); return 0; }