-/* $Id: glxinfo.c,v 1.8 2000/04/22 20:31:23 brianp Exp $ */
-
/*
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2006 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"),
* -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 GLX_GLXEXT_PROTOTYPES
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <GL/gl.h>
-#include <GL/glu.h>
#include <GL/glx.h>
#include <stdio.h>
#include <string.h>
+#include <stdlib.h>
+
+
+#ifndef GLX_NONE_EXT
+#define GLX_NONE_EXT 0x8000
+#endif
+
+#ifndef GLX_TRANSPARENT_RGB
+#define GLX_TRANSPARENT_RGB 0x8008
+#endif
typedef enum
/* GL visual attribs */
int supportsGL;
- int transparent;
+ int transparentType;
+ int transparentRedValue;
+ int transparentGreenValue;
+ int transparentBlueValue;
+ int transparentAlphaValue;
+ int transparentIndexValue;
int bufferSize;
int level;
int rgba;
static void
-print_screen_info(Display *dpy, int scrnum)
+print_display_info(Display *dpy)
+{
+ printf("name of display: %s\n", DisplayString(dpy));
+}
+
+
+/**
+ * Print interesting limits for vertex/fragment programs.
+ */
+static void
+print_program_limits(GLenum target)
+{
+#if defined(GL_ARB_vertex_program) || defined(GL_ARB_fragment_program)
+ struct token_name {
+ GLenum token;
+ const char *name;
+ };
+ static const struct token_name limits[] = {
+ { GL_MAX_PROGRAM_INSTRUCTIONS_ARB, "GL_MAX_PROGRAM_INSTRUCTIONS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB, "GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB" },
+ { GL_MAX_PROGRAM_TEMPORARIES_ARB, "GL_MAX_PROGRAM_TEMPORARIES_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB, "GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB" },
+ { GL_MAX_PROGRAM_PARAMETERS_ARB, "GL_MAX_PROGRAM_PARAMETERS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB, "GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB" },
+ { GL_MAX_PROGRAM_ATTRIBS_ARB, "GL_MAX_PROGRAM_ATTRIBS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB, "GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB" },
+ { GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB, "GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB, "GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB" },
+ { GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB, "GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB" },
+ { GL_MAX_PROGRAM_ENV_PARAMETERS_ARB, "GL_MAX_PROGRAM_ENV_PARAMETERS_ARB" },
+ { GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB, "GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB" },
+ { GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB, "GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB" },
+ { GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB, "GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB, "GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB, "GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB" },
+ { GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB, "GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB" },
+ { (GLenum) 0, NULL }
+ };
+ PFNGLGETPROGRAMIVARBPROC GetProgramivARB_func = (PFNGLGETPROGRAMIVARBPROC)
+ glXGetProcAddressARB((GLubyte *) "glGetProgramivARB");
+ GLint max[1];
+ int i;
+
+ if (target == GL_VERTEX_PROGRAM_ARB) {
+ printf(" GL_VERTEX_PROGRAM_ARB:\n");
+ }
+ else if (target == GL_FRAGMENT_PROGRAM_ARB) {
+ printf(" GL_FRAGMENT_PROGRAM_ARB:\n");
+ }
+ else {
+ return; /* something's wrong */
+ }
+
+ for (i = 0; limits[i].token; i++) {
+ GetProgramivARB_func(target, limits[i].token, max);
+ if (glGetError() == GL_NO_ERROR) {
+ printf(" %s = %d\n", limits[i].name, max[0]);
+ }
+ }
+#endif /* GL_ARB_vertex_program / GL_ARB_fragment_program */
+}
+
+
+/**
+ * Print interesting limits for vertex/fragment shaders.
+ */
+static void
+print_shader_limits(GLenum target)
+{
+ struct token_name {
+ GLenum token;
+ const char *name;
+ };
+#if defined(GL_ARB_vertex_shader)
+ static const struct token_name vertex_limits[] = {
+ { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB, "GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB" },
+ { GL_MAX_VARYING_FLOATS_ARB, "GL_MAX_VARYING_FLOATS_ARB" },
+ { GL_MAX_VERTEX_ATTRIBS_ARB, "GL_MAX_VERTEX_ATTRIBS_ARB" },
+ { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, "GL_MAX_TEXTURE_IMAGE_UNITS_ARB" },
+ { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB, "GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB" },
+ { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB, "GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB" },
+ { GL_MAX_TEXTURE_COORDS_ARB, "GL_MAX_TEXTURE_COORDS_ARB" },
+ { (GLenum) 0, NULL }
+ };
+#endif
+#if defined(GL_ARB_fragment_shader)
+ static const struct token_name fragment_limits[] = {
+ { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB, "GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB" },
+ { GL_MAX_TEXTURE_COORDS_ARB, "GL_MAX_TEXTURE_COORDS_ARB" },
+ { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, "GL_MAX_TEXTURE_IMAGE_UNITS_ARB" },
+ { (GLenum) 0, NULL }
+ };
+#endif
+ GLint max[1];
+ int i;
+
+#if defined(GL_ARB_vertex_shader)
+ if (target == GL_VERTEX_SHADER_ARB) {
+ printf(" GL_VERTEX_SHADER_ARB:\n");
+ for (i = 0; vertex_limits[i].token; i++) {
+ glGetIntegerv(vertex_limits[i].token, max);
+ if (glGetError() == GL_NO_ERROR) {
+ printf(" %s = %d\n", vertex_limits[i].name, max[0]);
+ }
+ }
+ }
+#endif
+#if defined(GL_ARB_fragment_shader)
+ if (target == GL_FRAGMENT_SHADER_ARB) {
+ printf(" GL_FRAGMENT_SHADER_ARB:\n");
+ for (i = 0; fragment_limits[i].token; i++) {
+ glGetIntegerv(fragment_limits[i].token, max);
+ if (glGetError() == GL_NO_ERROR) {
+ printf(" %s = %d\n", fragment_limits[i].name, max[0]);
+ }
+ }
+ }
+#endif
+}
+
+
+/**
+ * Print interesting OpenGL implementation limits.
+ */
+static void
+print_limits(const char *extensions)
+{
+ 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" },
+ { 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" },
+#if defined(GL_ARB_texture_cube_map)
+ { 1, GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, "GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB" },
+#endif
+#if defined(GLX_NV_texture_rectangle)
+ { 1, GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, "GL_MAX_RECTANGLE_TEXTURE_SIZE_NV" },
+#endif
+#if defined(GL_ARB_texture_compression)
+ { 1, GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, "GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB" },
+#endif
+#if defined(GL_ARB_multitexture)
+ { 1, GL_MAX_TEXTURE_UNITS_ARB, "GL_MAX_TEXTURE_UNITS_ARB" },
+#endif
+#if defined(GL_EXT_texture_lod_bias)
+ { 1, GL_MAX_TEXTURE_LOD_BIAS_EXT, "GL_MAX_TEXTURE_LOD_BIAS_EXT" },
+#endif
+#if defined(GL_EXT_texture_filter_anisotropic)
+ { 1, GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, "GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT" },
+#endif
+#if defined(GL_ARB_draw_buffers)
+ { 1, GL_MAX_DRAW_BUFFERS_ARB, "GL_MAX_DRAW_BUFFERS_ARB" },
+#endif
+ { 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_NO_ERROR) {
+ 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]);
+ }
+ }
+
+ /* these don't fit into the above mechanism, unfortunately */
+ glGetConvolutionParameteriv(GL_CONVOLUTION_2D, GL_MAX_CONVOLUTION_WIDTH, max);
+ glGetConvolutionParameteriv(GL_CONVOLUTION_2D, GL_MAX_CONVOLUTION_HEIGHT, max+1);
+ if (glGetError() == GL_NONE) {
+ printf(" GL_MAX_CONVOLUTION_WIDTH/HEIGHT = %d, %d\n", max[0], max[1]);
+ }
+
+#if defined(GL_ARB_vertex_program)
+ if (strstr(extensions, "GL_ARB_vertex_program")) {
+ print_program_limits(GL_VERTEX_PROGRAM_ARB);
+ }
+#endif
+#if defined(GL_ARB_fragment_program)
+ if (strstr(extensions, "GL_ARB_fragment_program")) {
+ print_program_limits(GL_FRAGMENT_PROGRAM_ARB);
+ }
+#endif
+#if defined(GL_ARB_vertex_shader)
+ if (strstr(extensions, "GL_ARB_vertex_shader")) {
+ print_shader_limits(GL_VERTEX_SHADER_ARB);
+ }
+#endif
+#if defined(GL_ARB_fragment_shader)
+ if (strstr(extensions, "GL_ARB_fragment_shader")) {
+ print_shader_limits(GL_FRAGMENT_SHADER_ARB);
+ }
+#endif
+}
+
+
+static void
+print_screen_info(Display *dpy, int scrnum, Bool allowDirect, GLboolean limits)
{
Window win;
int attribSingle[] = {
if (!visinfo) {
visinfo = glXChooseVisual(dpy, scrnum, attribDouble);
if (!visinfo) {
- fprintf(stderr, "Error: couldn't find RGB GLX visual!\n");
+ 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.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, True );
+ ctx = glXCreateContext( dpy, visinfo, NULL, allowDirect );
if (!ctx) {
+ fprintf(stderr, "Error: glXCreateContext failed\n");
+ XFree(visinfo);
XDestroyWindow(dpy, win);
return;
}
- if (glXMakeCurrent( dpy, win, ctx )) {
+ 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 *glRenderer = (const char *) glGetString(GL_RENDERER);
const char *glVersion = (const char *) glGetString(GL_VERSION);
const char *glExtensions = (const char *) glGetString(GL_EXTENSIONS);
- const char *gluVersion = (const char *) gluGetString(GLU_VERSION);
- const char *gluExtensions = (const char *) gluGetString(GLU_EXTENSIONS);
- printf("display: %s screen:%d\n", DisplayString(dpy), scrnum);
+ int glxVersionMajor;
+ int glxVersionMinor;
+ char *displayName = NULL;
+ char *colon = NULL, *period = NULL;
+
+ if (! glXQueryVersion( dpy, & glxVersionMajor, & glxVersionMinor )) {
+ fprintf(stderr, "Error: glXQueryVersion failed\n");
+ exit(1);
+ }
+
+ /* 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: ");
+ if (glXIsDirect(dpy, ctx)) {
+ printf("Yes\n");
+ } else {
+ if (!allowDirect) {
+ printf("No (-i specified)\n");
+ } else if (getenv("LIBGL_ALWAYS_INDIRECT")) {
+ printf("No (LIBGL_ALWAYS_INDIRECT set)\n");
+ } else {
+ printf("No (If you want to find out why, try setting "
+ "LIBGL_DEBUG=verbose)\n");
+ }
+ }
printf("server glx vendor string: %s\n", serverVendor);
printf("server glx version string: %s\n", serverVersion);
printf("server glx extensions:\n");
printf("client glx version string: %s\n", clientVersion);
printf("client glx extensions:\n");
print_extension_list(clientExtensions);
+ printf("GLX version: %u.%u\n", glxVersionMajor, glxVersionMinor);
printf("GLX extensions:\n");
print_extension_list(glxExtensions);
printf("OpenGL vendor string: %s\n", glVendor);
printf("OpenGL version string: %s\n", glVersion);
printf("OpenGL extensions:\n");
print_extension_list(glExtensions);
- printf("glu version: %s\n", gluVersion);
- printf("glu extensions:\n");
- print_extension_list(gluExtensions);
+ if (limits)
+ print_limits(glExtensions);
+ }
+ else {
+ fprintf(stderr, "Error: glXMakeCurrent failed\n");
}
glXDestroyContext(dpy, ctx);
+ XFree(visinfo);
XDestroyWindow(dpy, win);
}
glXGetConfig(dpy, vInfo, GLX_ACCUM_BLUE_SIZE, &attribs->accumBlueSize);
glXGetConfig(dpy, vInfo, GLX_ACCUM_ALPHA_SIZE, &attribs->accumAlphaSize);
- /* transparent pixel value not implemented yet */
- attribs->transparent = 0;
+ /* 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 tests not implemented yet */
- attribs->numSamples = 0;
- attribs->numMultisample = 0;
+ /* multisample attribs */
+#ifdef GLX_ARB_multisample
+ if (ext && strstr(ext, "GLX_ARB_multisample") == 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")) {
else if (attribs->visualCaveat == GLX_NON_CONFORMANT_VISUAL_EXT)
printf(" visualCaveat=Nonconformant\n");
#endif
- printf(" %s\n", attribs->transparent ? "Transparent." : "Opaque.");
+ 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(const struct visual_attribs *attribs)
{
- char *caveat;
+ char *caveat = NULL;
#ifdef GLX_EXT_visual_rating
if (attribs->visualCaveat == GLX_NONE_EXT || attribs->visualCaveat == 0)
caveat = "None";
caveat = "Slow";
else if (attribs->visualCaveat == GLX_NON_CONFORMANT_VISUAL_EXT)
caveat = "Ncon";
+ else
+ caveat = "None";
#else
caveat = "None";
#endif
attribs->id,
attribs->depth,
visual_class_abbrev(attribs->klass),
- attribs->transparent,
+ attribs->transparentType != GLX_NONE,
attribs->bufferSize,
attribs->level,
attribs->rgba ? "r" : "c",
attribs->id,
attribs->depth,
visual_class_name(attribs->klass),
- attribs->transparent,
+ attribs->transparentType != GLX_NONE,
attribs->bufferSize,
attribs->level,
attribs->rgba ? "rgba" : "ci ",
static void
print_visual_info(Display *dpy, int scrnum, InfoMode mode)
{
- XVisualInfo template;
+ XVisualInfo theTemplate;
XVisualInfo *visuals;
int numVisuals;
long mask;
int i;
/* get list of all visuals on this screen */
- template.screen = scrnum;
+ theTemplate.screen = scrnum;
mask = VisualScreenMask;
- visuals = XGetVisualInfo(dpy, mask, &template, &numVisuals);
+ visuals = XGetVisualInfo(dpy, mask, &theTemplate, &numVisuals);
if (mode == Verbose) {
for (i = 0; i < numVisuals; i++) {
}
+/*
+ * 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 <dname>]\n");
+ printf("\t-v: Print visuals info in verbose form.\n");
+ printf("\t-t: Print verbose table.\n");
+ printf("\t-display <dname>: 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 = ":0";
+ 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++) {
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);
+ fprintf(stderr, "Error: unable to open display %s\n", XDisplayName(displayName));
return -1;
}
- numScreens = ScreenCount(dpy);
- for (scrnum = 0; scrnum < numScreens; scrnum++) {
- print_screen_info(dpy, 0);
- printf("\n");
- print_visual_info(dpy, 0, mode);
- if (scrnum + 1 < numScreens)
- printf("\n\n");
+ 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);
projects / mesa.git / blobdiff