[Mesa-dev] [PATCH 1/2] glxinfo: move reusable, non-GLX code into glinfo_common.[ch]

Ian Romanick idr at freedesktop.org
Wed May 28 11:47:59 PDT 2014


The code changes look good, but I know approximately jack about cmake.

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

On 05/22/2014 07:53 PM, Brian Paul wrote:
> So that we can share some of the code with wglinfo.
> ---
>  src/xdemos/CMakeLists.txt  |    4 +-
>  src/xdemos/Makefile.am     |    4 +
>  src/xdemos/glinfo_common.c |  649 ++++++++++++++++++++++++++++++++++++++++++++
>  src/xdemos/glinfo_common.h |   89 ++++++
>  src/xdemos/glxinfo.c       |  647 +------------------------------------------
>  5 files changed, 759 insertions(+), 634 deletions(-)
>  create mode 100644 src/xdemos/glinfo_common.c
>  create mode 100644 src/xdemos/glinfo_common.h
> 
> diff --git a/src/xdemos/CMakeLists.txt b/src/xdemos/CMakeLists.txt
> index ee8b12d..97329fe 100644
> --- a/src/xdemos/CMakeLists.txt
> +++ b/src/xdemos/CMakeLists.txt
> @@ -34,7 +34,6 @@ set (targets
>  	glxgears_fbconfig
>  	glxgears_pixmap
>  	glxheads
> -	glxinfo
>  	glxpbdemo
>  	glxpixmap
>  	glxsnoop
> @@ -73,5 +72,6 @@ target_link_libraries (${subdir}_sharedtex_mt pthread)
>  
>  add_executable (corender corender.c ipc.c) 
>  add_executable (xrotfontdemo xrotfontdemo.c xuserotfont.c)
> +add_executable (glxinfo glxinfo.c glinfo_common.c)
>  
> -install (TARGETS corender xrotfontdemo DESTINATION demos)
> +install (TARGETS glxinfo corender xrotfontdemo DESTINATION demos)
> diff --git a/src/xdemos/Makefile.am b/src/xdemos/Makefile.am
> index 373e7c2..0bdf13d 100644
> --- a/src/xdemos/Makefile.am
> +++ b/src/xdemos/Makefile.am
> @@ -77,6 +77,10 @@ xrotfontdemo_SOURCES = \
>  	xuserotfont.c \
>  	xuserotfont.h
>  
> +glxinfo_SOURCES = \
> +	glxinfo.c \
> +	glinfo_common.c
> +
>  glthreads_LDADD = -lpthread
>  glxgears_fbconfig_LDADD = libpbutil.la
>  pbdemo_LDADD = libpbutil.la
> diff --git a/src/xdemos/glinfo_common.c b/src/xdemos/glinfo_common.c
> new file mode 100644
> index 0000000..e6517d7
> --- /dev/null
> +++ b/src/xdemos/glinfo_common.c
> @@ -0,0 +1,649 @@
> +/*
> + * Copyright (C) 1999-2014  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 <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include "glinfo_common.h"
> +
> +
> +/**
> + * Return the GL enum name for a numeric value.
> + * We really only care about the compressed texture formats for now.
> + */
> +static const char *
> +enum_name(GLenum val)
> +{
> +   static const struct {
> +      const char *name;
> +      GLenum val;
> +   } enums [] = {
> +      { "GL_COMPRESSED_ALPHA", 0x84E9 },
> +      { "GL_COMPRESSED_LUMINANCE", 0x84EA },
> +      { "GL_COMPRESSED_LUMINANCE_ALPHA", 0x84EB },
> +      { "GL_COMPRESSED_INTENSITY", 0x84EC },
> +      { "GL_COMPRESSED_RGB", 0x84ED },
> +      { "GL_COMPRESSED_RGBA", 0x84EE },
> +      { "GL_COMPRESSED_TEXTURE_FORMATS", 0x86A3 },
> +      { "GL_COMPRESSED_RGB", 0x84ED },
> +      { "GL_COMPRESSED_RGBA", 0x84EE },
> +      { "GL_COMPRESSED_TEXTURE_FORMATS", 0x86A3 },
> +      { "GL_COMPRESSED_ALPHA", 0x84E9 },
> +      { "GL_COMPRESSED_LUMINANCE", 0x84EA },
> +      { "GL_COMPRESSED_LUMINANCE_ALPHA", 0x84EB },
> +      { "GL_COMPRESSED_INTENSITY", 0x84EC },
> +      { "GL_COMPRESSED_SRGB", 0x8C48 },
> +      { "GL_COMPRESSED_SRGB_ALPHA", 0x8C49 },
> +      { "GL_COMPRESSED_SLUMINANCE", 0x8C4A },
> +      { "GL_COMPRESSED_SLUMINANCE_ALPHA", 0x8C4B },
> +      { "GL_COMPRESSED_RED", 0x8225 },
> +      { "GL_COMPRESSED_RG", 0x8226 },
> +      { "GL_COMPRESSED_RED_RGTC1", 0x8DBB },
> +      { "GL_COMPRESSED_SIGNED_RED_RGTC1", 0x8DBC },
> +      { "GL_COMPRESSED_RG_RGTC2", 0x8DBD },
> +      { "GL_COMPRESSED_SIGNED_RG_RGTC2", 0x8DBE },
> +      { "GL_COMPRESSED_RGB8_ETC2", 0x9274 },
> +      { "GL_COMPRESSED_SRGB8_ETC2", 0x9275 },
> +      { "GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2", 0x9276 },
> +      { "GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2", 0x9277 },
> +      { "GL_COMPRESSED_RGBA8_ETC2_EAC", 0x9278 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC", 0x9279 },
> +      { "GL_COMPRESSED_R11_EAC", 0x9270 },
> +      { "GL_COMPRESSED_SIGNED_R11_EAC", 0x9271 },
> +      { "GL_COMPRESSED_RG11_EAC", 0x9272 },
> +      { "GL_COMPRESSED_SIGNED_RG11_EAC", 0x9273 },
> +      { "GL_COMPRESSED_ALPHA_ARB", 0x84E9 },
> +      { "GL_COMPRESSED_LUMINANCE_ARB", 0x84EA },
> +      { "GL_COMPRESSED_LUMINANCE_ALPHA_ARB", 0x84EB },
> +      { "GL_COMPRESSED_INTENSITY_ARB", 0x84EC },
> +      { "GL_COMPRESSED_RGB_ARB", 0x84ED },
> +      { "GL_COMPRESSED_RGBA_ARB", 0x84EE },
> +      { "GL_COMPRESSED_TEXTURE_FORMATS_ARB", 0x86A3 },
> +      { "GL_COMPRESSED_RGBA_BPTC_UNORM_ARB", 0x8E8C },
> +      { "GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB", 0x8E8D },
> +      { "GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB", 0x8E8E },
> +      { "GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB", 0x8E8F },
> +      { "GL_COMPRESSED_RGBA_ASTC_4x4_KHR", 0x93B0 },
> +      { "GL_COMPRESSED_RGBA_ASTC_5x4_KHR", 0x93B1 },
> +      { "GL_COMPRESSED_RGBA_ASTC_5x5_KHR", 0x93B2 },
> +      { "GL_COMPRESSED_RGBA_ASTC_6x5_KHR", 0x93B3 },
> +      { "GL_COMPRESSED_RGBA_ASTC_6x6_KHR", 0x93B4 },
> +      { "GL_COMPRESSED_RGBA_ASTC_8x5_KHR", 0x93B5 },
> +      { "GL_COMPRESSED_RGBA_ASTC_8x6_KHR", 0x93B6 },
> +      { "GL_COMPRESSED_RGBA_ASTC_8x8_KHR", 0x93B7 },
> +      { "GL_COMPRESSED_RGBA_ASTC_10x5_KHR", 0x93B8 },
> +      { "GL_COMPRESSED_RGBA_ASTC_10x6_KHR", 0x93B9 },
> +      { "GL_COMPRESSED_RGBA_ASTC_10x8_KHR", 0x93BA },
> +      { "GL_COMPRESSED_RGBA_ASTC_10x10_KHR", 0x93BB },
> +      { "GL_COMPRESSED_RGBA_ASTC_12x10_KHR", 0x93BC },
> +      { "GL_COMPRESSED_RGBA_ASTC_12x12_KHR", 0x93BD },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR", 0x93D0 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR", 0x93D1 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR", 0x93D2 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR", 0x93D3 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR", 0x93D4 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR", 0x93D5 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR", 0x93D6 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR", 0x93D7 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR", 0x93D8 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR", 0x93D9 },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR", 0x93DA },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR", 0x93DB },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR", 0x93DC },
> +      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR", 0x93DD },
> +      { "GL_COMPRESSED_RGB_FXT1_3DFX", 0x86B0 },
> +      { "GL_COMPRESSED_RGBA_FXT1_3DFX", 0x86B1 },
> +      { "GL_COMPRESSED_LUMINANCE_LATC1_EXT", 0x8C70 },
> +      { "GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT", 0x8C71 },
> +      { "GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT", 0x8C72 },
> +      { "GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT", 0x8C73 },
> +      { "GL_COMPRESSED_RED_RGTC1_EXT", 0x8DBB },
> +      { "GL_COMPRESSED_SIGNED_RED_RGTC1_EXT", 0x8DBC },
> +      { "GL_COMPRESSED_RED_GREEN_RGTC2_EXT", 0x8DBD },
> +      { "GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT", 0x8DBE },
> +      { "GL_COMPRESSED_RGB_S3TC_DXT1_EXT", 0x83F0 },
> +      { "GL_COMPRESSED_RGBA_S3TC_DXT1_EXT", 0x83F1 },
> +      { "GL_COMPRESSED_RGBA_S3TC_DXT3_EXT", 0x83F2 },
> +      { "GL_COMPRESSED_RGBA_S3TC_DXT5_EXT", 0x83F3 },
> +      { "GL_COMPRESSED_SRGB_EXT", 0x8C48 },
> +      { "GL_COMPRESSED_SRGB_ALPHA_EXT", 0x8C49 },
> +      { "GL_COMPRESSED_SLUMINANCE_EXT", 0x8C4A },
> +      { "GL_COMPRESSED_SLUMINANCE_ALPHA_EXT", 0x8C4B },
> +      { "GL_COMPRESSED_SRGB_S3TC_DXT1_EXT", 0x8C4C },
> +      { "GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT", 0x8C4D },
> +      { "GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT", 0x8C4E },
> +      { "GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT", 0x8C4F },
> +      { "GL_PALETTE4_RGB8_OES", 0x8B90 },
> +      { "GL_PALETTE4_RGBA8_OES", 0x8B91 },
> +      { "GL_PALETTE4_R5_G6_B5_OES", 0x8B92 },
> +      { "GL_PALETTE4_RGBA4_OES", 0x8B93 },
> +      { "GL_PALETTE4_RGB5_A1_OES", 0x8B94 },
> +      { "GL_PALETTE8_RGB8_OES", 0x8B95 },
> +      { "GL_PALETTE8_RGBA8_OES", 0x8B96 },
> +      { "GL_PALETTE8_R5_G6_B5_OES", 0x8B97 },
> +      { "GL_PALETTE8_RGBA4_OES", 0x8B98 },
> +      { "GL_PALETTE8_RGB5_A1_OES", 0x8B99 }
> +   };
> +   const int n = sizeof(enums) / sizeof(enums[0]);
> +   static char buffer[100];
> +   int i;
> +   for (i = 0; i < n; i++) {
> +      if (enums[i].val == val) {
> +         return enums[i].name;
> +      }
> +   }
> +   /* enum val not found, just print hexadecimal value into static buffer */
> +   snprintf(buffer, sizeof(buffer), "0x%x", val);
> +   return buffer;
> +}
> +
> +
> +/*
> + * qsort callback for string comparison.
> + */
> +static int
> +compare_string_ptr(const void *p1, const void *p2)
> +{
> +   return strcmp(* (char * const *) p1, * (char * const *) p2);
> +}
> +
> +/*
> + * Print a list of extensions, with word-wrapping.
> + */
> +void
> +print_extension_list(const char *ext, GLboolean singleLine)
> +{
> +   char **extensions;
> +   int num_extensions;
> +   const char *indentString = "    ";
> +   const int indent = 4;
> +   const int max = 79;
> +   int width, i, j, k;
> +
> +   if (!ext || !ext[0])
> +      return;
> +
> +   /* count the number of extensions, ignoring successive spaces */
> +   num_extensions = 0;
> +   j = 1;
> +   do {
> +      if ((ext[j] == ' ' || ext[j] == 0) && ext[j - 1] != ' ') {
> +         ++num_extensions;
> +      }
> +   } while(ext[j++]);
> +
> +   /* copy individual extensions to an array */
> +   extensions = malloc(num_extensions * sizeof *extensions);
> +   if (!extensions) {
> +      fprintf(stderr, "Error: malloc() failed\n");
> +      exit(1);
> +   }
> +   i = j = k = 0;
> +   while (1) {
> +      if (ext[j] == ' ' || ext[j] == 0) {
> +         /* found end of an extension name */
> +         const int len = j - i;
> +
> +         if (len) {
> +            assert(k < num_extensions);
> +
> +            extensions[k] = malloc(len + 1);
> +            if (!extensions[k]) {
> +               fprintf(stderr, "Error: malloc() failed\n");
> +               exit(1);
> +            }
> +
> +            memcpy(extensions[k], ext + i, len);
> +            extensions[k][len] = 0;
> +
> +            ++k;
> +         };
> +
> +         i += len + 1;
> +
> +         if (ext[j] == 0) {
> +            break;
> +         }
> +      }
> +      j++;
> +   }
> +   assert(k == num_extensions);
> +
> +   /* sort extensions alphabetically */
> +   qsort(extensions, num_extensions, sizeof extensions[0], compare_string_ptr);
> +
> +   /* print the extensions */
> +   width = indent;
> +   printf("%s", indentString);
> +   for (k = 0; k < num_extensions; ++k) {
> +      const int len = strlen(extensions[k]);
> +      if ((!singleLine) && (width + len > max)) {
> +         /* start a new line */
> +         printf("\n");
> +         width = indent;
> +         printf("%s", indentString);
> +      }
> +      /* print the extension name */
> +      printf("%s", extensions[k]);
> +
> +      /* either we're all done, or we'll continue with next extension */
> +      width += len + 1;
> +
> +      if (singleLine) {
> +         printf("\n");
> +         width = indent;
> +         printf("%s", indentString);
> +      }
> +      else if (k < (num_extensions -1)) {
> +         printf(", ");
> +         width += 2;
> +      }
> +   }
> +   printf("\n");
> +
> +   for (k = 0; k < num_extensions; ++k) {
> +      free(extensions[k]);
> +   }
> +   free(extensions);
> +}
> +
> +
> +
> +
> +/**
> + * Get list of OpenGL extensions using core profile's glGetStringi().
> + */
> +char *
> +build_core_profile_extension_list(const struct ext_functions *extfuncs)
> +{
> +   GLint i, n, totalLen;
> +   char *buffer;
> +
> +   glGetIntegerv(GL_NUM_EXTENSIONS, &n);
> +
> +   /* compute totalLen */
> +   totalLen = 0;
> +   for (i = 0; i < n; i++) {
> +      const char *ext = (const char *) extfuncs->GetStringi(GL_EXTENSIONS, i);
> +      totalLen += strlen(ext) + 1; /* plus a space */
> +   }
> +
> +   buffer = malloc(totalLen + 1);
> +   if (buffer) {
> +      int pos = 0;
> +      for (i = 0; i < n; i++) {
> +         const char *ext = (const char *) extfuncs->GetStringi(GL_EXTENSIONS, i);
> +         strcpy(buffer + pos, ext);
> +         pos += strlen(ext);
> +         buffer[pos++] = ' ';
> +      }
> +      buffer[pos] = '\0';
> +   }
> +   return buffer;
> +}
> +
> +
> +/** Is extension 'ext' supported? */
> +GLboolean
> +extension_supported(const char *ext, const char *extensionsList)
> +{
> +   const char *p = strstr(extensionsList, ext);
> +   if (p) {
> +      /* check that next char is a space or end of string */
> +      int extLen = strlen(ext);
> +      if (p[extLen] == 0 || p[extLen] == ' ')
> +         return 1;
> +   }
> +   return 0;
> +}
> +
> +
> +struct token_name
> +{
> +   GLenum token;
> +   const char *name;
> +};
> +
> +
> +static void
> +print_shader_limit_list(const struct token_name *lim)
> +{
> +   GLint max[1];
> +   unsigned i;
> +
> +   for (i = 0; lim[i].token; i++) {
> +      glGetIntegerv(lim[i].token, max);
> +      if (glGetError() == GL_NO_ERROR) {
> +	 printf("        %s = %d\n", lim[i].name, max[0]);
> +      }
> +   }
> +}
> +
> +
> +/**
> + * Print interesting limits for vertex/fragment shaders.
> + */
> +static void
> +print_shader_limits(GLenum target)
> +{
> +   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" },
> +      { GL_MAX_VERTEX_OUTPUT_COMPONENTS  , "GL_MAX_VERTEX_OUTPUT_COMPONENTS  " },
> +      { (GLenum) 0, NULL }
> +   };
> +   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" },
> +      { GL_MAX_FRAGMENT_INPUT_COMPONENTS , "GL_MAX_FRAGMENT_INPUT_COMPONENTS " },
> +      { (GLenum) 0, NULL }
> +   };
> +   static const struct token_name geometry_limits[] = {
> +      { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS, "GL_MAX_GEOMETRY_UNIFORM_COMPONENTS" },
> +      { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS, "GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS" },
> +      { GL_MAX_GEOMETRY_OUTPUT_VERTICES  , "GL_MAX_GEOMETRY_OUTPUT_VERTICES  " },
> +      { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS, "GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS" },
> +      { GL_MAX_GEOMETRY_INPUT_COMPONENTS , "GL_MAX_GEOMETRY_INPUT_COMPONENTS " },
> +      { GL_MAX_GEOMETRY_OUTPUT_COMPONENTS, "GL_MAX_GEOMETRY_OUTPUT_COMPONENTS" },
> +      { (GLenum) 0, NULL }
> +   };
> +
> +   switch (target) {
> +   case GL_VERTEX_SHADER:
> +      printf("    GL_VERTEX_SHADER_ARB:\n");
> +      print_shader_limit_list(vertex_limits);
> +      break;
> +
> +   case GL_FRAGMENT_SHADER:
> +      printf("    GL_FRAGMENT_SHADER_ARB:\n");
> +      print_shader_limit_list(fragment_limits);
> +      break;
> +
> +   case GL_GEOMETRY_SHADER:
> +      printf("    GL_GEOMETRY_SHADER:\n");
> +      print_shader_limit_list(geometry_limits);
> +      break;
> +   }
> +}
> +
> +
> +/**
> + * Print interesting limits for vertex/fragment programs.
> + */
> +static void
> +print_program_limits(GLenum target, 
> +                     const struct ext_functions *extfuncs)
> +{
> +#if defined(GL_ARB_vertex_program) || defined(GL_ARB_fragment_program)
> +   struct token_name {
> +      GLenum token;
> +      const char *name;
> +   };
> +   static const struct token_name common_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" },
> +      { (GLenum) 0, NULL }
> +   };
> +   static const struct token_name fragment_limits[] = {
> +      { 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 }
> +   };
> +
> +   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; common_limits[i].token; i++) {
> +      extfuncs->GetProgramivARB(target, common_limits[i].token, max);
> +      if (glGetError() == GL_NO_ERROR) {
> +         printf("        %s = %d\n", common_limits[i].name, max[0]);
> +      }
> +   }
> +   if (target == GL_FRAGMENT_PROGRAM_ARB) {
> +      for (i = 0; fragment_limits[i].token; i++) {
> +         extfuncs->GetProgramivARB(target, fragment_limits[i].token, max);
> +         if (glGetError() == GL_NO_ERROR) {
> +            printf("        %s = %d\n", fragment_limits[i].name, max[0]);
> +         }
> +      }
> +   }
> +#endif /* GL_ARB_vertex_program / GL_ARB_fragment_program */
> +}
> +
> +
> +/**
> + * Print interesting OpenGL implementation limits.
> + * \param version  20, 21, 30, 31, 32, etc.
> + */
> +void
> +print_limits(const char *extensions, const char *oglstring, int version,
> +             const struct ext_functions *extfuncs)
> +{
> +   struct token_name {
> +      GLuint count;
> +      GLenum token;
> +      const char *name;
> +      const char *extension;
> +   };
> +   static const struct token_name limits[] = {
> +      { 1, GL_MAX_ATTRIB_STACK_DEPTH, "GL_MAX_ATTRIB_STACK_DEPTH", NULL },
> +      { 1, GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, "GL_MAX_CLIENT_ATTRIB_STACK_DEPTH", NULL },
> +      { 1, GL_MAX_CLIP_PLANES, "GL_MAX_CLIP_PLANES", NULL },
> +      { 1, GL_MAX_COLOR_MATRIX_STACK_DEPTH, "GL_MAX_COLOR_MATRIX_STACK_DEPTH", "GL_ARB_imaging" },
> +      { 1, GL_MAX_ELEMENTS_VERTICES, "GL_MAX_ELEMENTS_VERTICES", NULL },
> +      { 1, GL_MAX_ELEMENTS_INDICES, "GL_MAX_ELEMENTS_INDICES", NULL },
> +      { 1, GL_MAX_EVAL_ORDER, "GL_MAX_EVAL_ORDER", NULL },
> +      { 1, GL_MAX_LIGHTS, "GL_MAX_LIGHTS", NULL },
> +      { 1, GL_MAX_LIST_NESTING, "GL_MAX_LIST_NESTING", NULL },
> +      { 1, GL_MAX_MODELVIEW_STACK_DEPTH, "GL_MAX_MODELVIEW_STACK_DEPTH", NULL },
> +      { 1, GL_MAX_NAME_STACK_DEPTH, "GL_MAX_NAME_STACK_DEPTH", NULL },
> +      { 1, GL_MAX_PIXEL_MAP_TABLE, "GL_MAX_PIXEL_MAP_TABLE", NULL },
> +      { 1, GL_MAX_PROJECTION_STACK_DEPTH, "GL_MAX_PROJECTION_STACK_DEPTH", NULL },
> +      { 1, GL_MAX_TEXTURE_STACK_DEPTH, "GL_MAX_TEXTURE_STACK_DEPTH", NULL },
> +      { 1, GL_MAX_TEXTURE_SIZE, "GL_MAX_TEXTURE_SIZE", NULL },
> +      { 1, GL_MAX_3D_TEXTURE_SIZE, "GL_MAX_3D_TEXTURE_SIZE", NULL },
> +      { 2, GL_MAX_VIEWPORT_DIMS, "GL_MAX_VIEWPORT_DIMS", NULL },
> +      { 2, GL_ALIASED_LINE_WIDTH_RANGE, "GL_ALIASED_LINE_WIDTH_RANGE", NULL },
> +      { 2, GL_SMOOTH_LINE_WIDTH_RANGE, "GL_SMOOTH_LINE_WIDTH_RANGE", NULL },
> +      { 2, GL_ALIASED_POINT_SIZE_RANGE, "GL_ALIASED_POINT_SIZE_RANGE", NULL },
> +      { 2, GL_SMOOTH_POINT_SIZE_RANGE, "GL_SMOOTH_POINT_SIZE_RANGE", NULL },
> +#if defined(GL_ARB_texture_cube_map)
> +      { 1, GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, "GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB", "GL_ARB_texture_cube_map" },
> +#endif
> +#if defined(GL_NV_texture_rectangle)
> +      { 1, GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, "GL_MAX_RECTANGLE_TEXTURE_SIZE_NV", "GL_NV_texture_rectangle" },
> +#endif
> +#if defined(GL_ARB_multitexture)
> +      { 1, GL_MAX_TEXTURE_UNITS_ARB, "GL_MAX_TEXTURE_UNITS_ARB", "GL_ARB_multitexture" },
> +#endif
> +#if defined(GL_EXT_texture_lod_bias)
> +      { 1, GL_MAX_TEXTURE_LOD_BIAS_EXT, "GL_MAX_TEXTURE_LOD_BIAS_EXT", "GL_EXT_texture_lod_bias" },
> +#endif
> +#if defined(GL_EXT_texture_filter_anisotropic)
> +      { 1, GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, "GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT", "GL_EXT_texture_filter_anisotropic" },
> +#endif
> +#if defined(GL_ARB_draw_buffers)
> +      { 1, GL_MAX_DRAW_BUFFERS_ARB, "GL_MAX_DRAW_BUFFERS_ARB", "GL_ARB_draw_buffers" },
> +#endif
> +#if defined(GL_ARB_blend_func_extended)
> +      { 1, GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, "GL_MAX_DUAL_SOURCE_DRAW_BUFFERS", "GL_ARB_blend_func_extended" },
> +#endif
> +#if defined (GL_ARB_framebuffer_object)
> +      { 1, GL_MAX_RENDERBUFFER_SIZE, "GL_MAX_RENDERBUFFER_SIZE", "GL_ARB_framebuffer_object" },
> +      { 1, GL_MAX_COLOR_ATTACHMENTS, "GL_MAX_COLOR_ATTACHMENTS", "GL_ARB_framebuffer_object" },
> +      { 1, GL_MAX_SAMPLES, "GL_MAX_SAMPLES", "GL_ARB_framebuffer_object" },
> +#endif
> +      { 0, (GLenum) 0, NULL, NULL }
> +   };
> +   GLint i, max[2];
> +
> +   printf("%s limits:\n", oglstring);
> +   for (i = 0; limits[i].count; i++) {
> +      if (!limits[i].extension ||
> +          extension_supported(limits[i].extension, extensions)) {
> +         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 */
> +   if (extension_supported("GL_ARB_imaging", extensions)) {
> +      extfuncs->GetConvolutionParameteriv(GL_CONVOLUTION_2D,
> +                                          GL_MAX_CONVOLUTION_WIDTH, max);
> +      extfuncs->GetConvolutionParameteriv(GL_CONVOLUTION_2D,
> +                                          GL_MAX_CONVOLUTION_HEIGHT, max+1);
> +      printf("    GL_MAX_CONVOLUTION_WIDTH/HEIGHT = %d, %d\n", max[0], max[1]);
> +   }
> +
> +   if (extension_supported("GL_ARB_texture_compression", extensions)) {
> +      GLint i, n;
> +      GLint *formats;
> +      glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &n);
> +      printf("    GL_NUM_COMPRESSED_TEXTURE_FORMATS = %d\n", n);
> +      formats = (GLint *) malloc(n * sizeof(GLint));
> +      glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, formats);
> +      for (i = 0; i < n; i++) {
> +         printf("        %s\n", enum_name(formats[i]));
> +      }
> +      free(formats);
> +   }
> +#if defined(GL_ARB_vertex_program)
> +   if (extension_supported("GL_ARB_vertex_program", extensions)) {
> +      print_program_limits(GL_VERTEX_PROGRAM_ARB, extfuncs);
> +   }
> +#endif
> +#if defined(GL_ARB_fragment_program)
> +   if (extension_supported("GL_ARB_fragment_program", extensions)) {
> +      print_program_limits(GL_FRAGMENT_PROGRAM_ARB, extfuncs);
> +   }
> +#endif
> +   if (extension_supported("GL_ARB_vertex_shader", extensions)) {
> +      print_shader_limits(GL_VERTEX_SHADER_ARB);
> +   }
> +   if (extension_supported("GL_ARB_fragment_shader", extensions)) {
> +      print_shader_limits(GL_FRAGMENT_SHADER_ARB);
> +   }
> +   if (version >= 32) {
> +      print_shader_limits(GL_GEOMETRY_SHADER);
> +   }
> +}
> +
> +
> +
> +/**
> + * Return string representation for bits in a bitmask.
> + */
> +const char *
> +bitmask_to_string(const struct bit_info bits[], int numBits, int mask)
> +{
> +   static char buffer[256], *p;
> +   int i;
> +
> +   strcpy(buffer, "(none)");
> +   p = buffer;
> +   for (i = 0; i < numBits; i++) {
> +      if (mask & bits[i].bit) {
> +         if (p > buffer)
> +            *p++ = ',';
> +         strcpy(p, bits[i].name);
> +         p += strlen(bits[i].name);
> +      }
> +   }
> +
> +   return buffer;
> +}
> +
> +/**
> + * Return string representation for the bitmask returned by
> + * GL_CONTEXT_PROFILE_MASK (OpenGL 3.2 or later).
> + */
> +const char *
> +profile_mask_string(int mask)
> +{
> +   const static struct bit_info bits[] = {
> +#ifdef GL_CONTEXT_CORE_PROFILE_BIT
> +      { GL_CONTEXT_CORE_PROFILE_BIT, "core profile"},
> +#endif
> +#ifdef GL_CONTEXT_COMPATIBILITY_PROFILE_BIT
> +      { GL_CONTEXT_COMPATIBILITY_PROFILE_BIT, "compatibility profile" }
> +#endif
> +   };
> +
> +   return bitmask_to_string(bits, ELEMENTS(bits), mask);
> +}
> +
> +
> +/**
> + * Return string representation for the bitmask returned by
> + * GL_CONTEXT_FLAGS (OpenGL 3.0 or later).
> + */
> +const char *
> +context_flags_string(int mask)
> +{
> +   const static struct bit_info bits[] = {
> +#ifdef GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT
> +      { GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT, "forward-compatible" },
> +#endif
> +#ifdef GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
> +      { GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB, "robust-access" },
> +#endif
> +   };
> +
> +   return bitmask_to_string(bits, ELEMENTS(bits), mask);
> +}
> +
> +
> diff --git a/src/xdemos/glinfo_common.h b/src/xdemos/glinfo_common.h
> new file mode 100644
> index 0000000..61d1643
> --- /dev/null
> +++ b/src/xdemos/glinfo_common.h
> @@ -0,0 +1,89 @@
> +/*
> + * Copyright (C) 1999-2014  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.
> + */
> +
> +
> +/**
> + * Common code shared by glxinfo and wglinfo.
> + */
> +
> +#ifndef GLINFO_COMMON_H
> +#define GLINFO_COMMON_H
> +
> +
> +/**
> + * Note: the gl.h header shipped with MinGW doesn't include glext.h so we
> + * include it here.  And the PFNGL typedefs are hit and miss so we define
> + * our own here.
> + */
> +#include <GL/gl.h>
> +#include <GL/glext.h>
> +
> +typedef void (APIENTRY * GETPROGRAMIVARBPROC) (GLenum target, GLenum pname, GLint *params);
> +typedef const GLubyte *(APIENTRY * GETSTRINGIPROC) (GLenum name, GLuint index);
> +typedef void (APIENTRY * GETCONVOLUTIONPARAMETERIVPROC) (GLenum target, GLenum pname, GLint *params);
> +
> +
> +/**
> + * Ext functions needed in common code but must be provided by
> + * glxinfo or wglinfo.
> + */
> +struct ext_functions
> +{
> +   GETPROGRAMIVARBPROC GetProgramivARB;
> +   GETSTRINGIPROC GetStringi;
> +   GETCONVOLUTIONPARAMETERIVPROC GetConvolutionParameteriv;
> +};
> +
> +
> +#define ELEMENTS(array) (sizeof(array) / sizeof(array[0]))
> +
> +
> +struct bit_info
> +{
> +   int bit;
> +   const char *name;
> +};
> +
> +
> +void
> +print_extension_list(const char *ext, GLboolean singleLine);
> +
> +char *
> +build_core_profile_extension_list(const struct ext_functions *extfuncs);
> +
> +GLboolean
> +extension_supported(const char *ext, const char *extensionsList);
> +
> +void
> +print_limits(const char *extensions, const char *oglstring, int version,
> +             const struct ext_functions *extfuncs);
> +
> +const char *
> +bitmask_to_string(const struct bit_info bits[], int numBits, int mask);
> +
> +const char *
> +profile_mask_string(int mask);
> +
> +const char *
> +context_flags_string(int mask);
> +
> +
> +#endif /* GLINFO_COMMON_H */
> diff --git a/src/xdemos/glxinfo.c b/src/xdemos/glxinfo.c
> index a116e4a..5208423 100644
> --- a/src/xdemos/glxinfo.c
> +++ b/src/xdemos/glxinfo.c
> @@ -44,6 +44,7 @@
>  #include <stdio.h>
>  #include <string.h>
>  #include <stdlib.h>
> +#include "glinfo_common.h"
>  
>  
>  #ifndef GLX_NONE_EXT
> @@ -62,8 +63,6 @@
>  #define GLX_COLOR_INDEX_BIT		0x00000002
>  #endif
>  
> -#define ELEMENTS(array) (sizeof(array) / sizeof(array[0]))
> -
>  typedef enum
>  {
>     Normal,
> @@ -154,288 +153,6 @@ CheckError(int line)
>  }
>  
>  
> -/**
> - * Return the GL enum name for a numeric value.
> - * We really only care about the compressed texture formats for now.
> - */
> -static const char *
> -enum_name(GLenum val)
> -{
> -   static const struct {
> -      const char *name;
> -      GLenum val;
> -   } enums [] = {
> -      { "GL_COMPRESSED_ALPHA", 0x84E9 },
> -      { "GL_COMPRESSED_LUMINANCE", 0x84EA },
> -      { "GL_COMPRESSED_LUMINANCE_ALPHA", 0x84EB },
> -      { "GL_COMPRESSED_INTENSITY", 0x84EC },
> -      { "GL_COMPRESSED_RGB", 0x84ED },
> -      { "GL_COMPRESSED_RGBA", 0x84EE },
> -      { "GL_COMPRESSED_TEXTURE_FORMATS", 0x86A3 },
> -      { "GL_COMPRESSED_RGB", 0x84ED },
> -      { "GL_COMPRESSED_RGBA", 0x84EE },
> -      { "GL_COMPRESSED_TEXTURE_FORMATS", 0x86A3 },
> -      { "GL_COMPRESSED_ALPHA", 0x84E9 },
> -      { "GL_COMPRESSED_LUMINANCE", 0x84EA },
> -      { "GL_COMPRESSED_LUMINANCE_ALPHA", 0x84EB },
> -      { "GL_COMPRESSED_INTENSITY", 0x84EC },
> -      { "GL_COMPRESSED_SRGB", 0x8C48 },
> -      { "GL_COMPRESSED_SRGB_ALPHA", 0x8C49 },
> -      { "GL_COMPRESSED_SLUMINANCE", 0x8C4A },
> -      { "GL_COMPRESSED_SLUMINANCE_ALPHA", 0x8C4B },
> -      { "GL_COMPRESSED_RED", 0x8225 },
> -      { "GL_COMPRESSED_RG", 0x8226 },
> -      { "GL_COMPRESSED_RED_RGTC1", 0x8DBB },
> -      { "GL_COMPRESSED_SIGNED_RED_RGTC1", 0x8DBC },
> -      { "GL_COMPRESSED_RG_RGTC2", 0x8DBD },
> -      { "GL_COMPRESSED_SIGNED_RG_RGTC2", 0x8DBE },
> -      { "GL_COMPRESSED_RGB8_ETC2", 0x9274 },
> -      { "GL_COMPRESSED_SRGB8_ETC2", 0x9275 },
> -      { "GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2", 0x9276 },
> -      { "GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2", 0x9277 },
> -      { "GL_COMPRESSED_RGBA8_ETC2_EAC", 0x9278 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC", 0x9279 },
> -      { "GL_COMPRESSED_R11_EAC", 0x9270 },
> -      { "GL_COMPRESSED_SIGNED_R11_EAC", 0x9271 },
> -      { "GL_COMPRESSED_RG11_EAC", 0x9272 },
> -      { "GL_COMPRESSED_SIGNED_RG11_EAC", 0x9273 },
> -      { "GL_COMPRESSED_ALPHA_ARB", 0x84E9 },
> -      { "GL_COMPRESSED_LUMINANCE_ARB", 0x84EA },
> -      { "GL_COMPRESSED_LUMINANCE_ALPHA_ARB", 0x84EB },
> -      { "GL_COMPRESSED_INTENSITY_ARB", 0x84EC },
> -      { "GL_COMPRESSED_RGB_ARB", 0x84ED },
> -      { "GL_COMPRESSED_RGBA_ARB", 0x84EE },
> -      { "GL_COMPRESSED_TEXTURE_FORMATS_ARB", 0x86A3 },
> -      { "GL_COMPRESSED_RGBA_BPTC_UNORM_ARB", 0x8E8C },
> -      { "GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB", 0x8E8D },
> -      { "GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB", 0x8E8E },
> -      { "GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB", 0x8E8F },
> -      { "GL_COMPRESSED_RGBA_ASTC_4x4_KHR", 0x93B0 },
> -      { "GL_COMPRESSED_RGBA_ASTC_5x4_KHR", 0x93B1 },
> -      { "GL_COMPRESSED_RGBA_ASTC_5x5_KHR", 0x93B2 },
> -      { "GL_COMPRESSED_RGBA_ASTC_6x5_KHR", 0x93B3 },
> -      { "GL_COMPRESSED_RGBA_ASTC_6x6_KHR", 0x93B4 },
> -      { "GL_COMPRESSED_RGBA_ASTC_8x5_KHR", 0x93B5 },
> -      { "GL_COMPRESSED_RGBA_ASTC_8x6_KHR", 0x93B6 },
> -      { "GL_COMPRESSED_RGBA_ASTC_8x8_KHR", 0x93B7 },
> -      { "GL_COMPRESSED_RGBA_ASTC_10x5_KHR", 0x93B8 },
> -      { "GL_COMPRESSED_RGBA_ASTC_10x6_KHR", 0x93B9 },
> -      { "GL_COMPRESSED_RGBA_ASTC_10x8_KHR", 0x93BA },
> -      { "GL_COMPRESSED_RGBA_ASTC_10x10_KHR", 0x93BB },
> -      { "GL_COMPRESSED_RGBA_ASTC_12x10_KHR", 0x93BC },
> -      { "GL_COMPRESSED_RGBA_ASTC_12x12_KHR", 0x93BD },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR", 0x93D0 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR", 0x93D1 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR", 0x93D2 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR", 0x93D3 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR", 0x93D4 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR", 0x93D5 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR", 0x93D6 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR", 0x93D7 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR", 0x93D8 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR", 0x93D9 },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR", 0x93DA },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR", 0x93DB },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR", 0x93DC },
> -      { "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR", 0x93DD },
> -      { "GL_COMPRESSED_RGB_FXT1_3DFX", 0x86B0 },
> -      { "GL_COMPRESSED_RGBA_FXT1_3DFX", 0x86B1 },
> -      { "GL_COMPRESSED_LUMINANCE_LATC1_EXT", 0x8C70 },
> -      { "GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT", 0x8C71 },
> -      { "GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT", 0x8C72 },
> -      { "GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT", 0x8C73 },
> -      { "GL_COMPRESSED_RED_RGTC1_EXT", 0x8DBB },
> -      { "GL_COMPRESSED_SIGNED_RED_RGTC1_EXT", 0x8DBC },
> -      { "GL_COMPRESSED_RED_GREEN_RGTC2_EXT", 0x8DBD },
> -      { "GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT", 0x8DBE },
> -      { "GL_COMPRESSED_RGB_S3TC_DXT1_EXT", 0x83F0 },
> -      { "GL_COMPRESSED_RGBA_S3TC_DXT1_EXT", 0x83F1 },
> -      { "GL_COMPRESSED_RGBA_S3TC_DXT3_EXT", 0x83F2 },
> -      { "GL_COMPRESSED_RGBA_S3TC_DXT5_EXT", 0x83F3 },
> -      { "GL_COMPRESSED_SRGB_EXT", 0x8C48 },
> -      { "GL_COMPRESSED_SRGB_ALPHA_EXT", 0x8C49 },
> -      { "GL_COMPRESSED_SLUMINANCE_EXT", 0x8C4A },
> -      { "GL_COMPRESSED_SLUMINANCE_ALPHA_EXT", 0x8C4B },
> -      { "GL_COMPRESSED_SRGB_S3TC_DXT1_EXT", 0x8C4C },
> -      { "GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT", 0x8C4D },
> -      { "GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT", 0x8C4E },
> -      { "GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT", 0x8C4F },
> -      { "GL_PALETTE4_RGB8_OES", 0x8B90 },
> -      { "GL_PALETTE4_RGBA8_OES", 0x8B91 },
> -      { "GL_PALETTE4_R5_G6_B5_OES", 0x8B92 },
> -      { "GL_PALETTE4_RGBA4_OES", 0x8B93 },
> -      { "GL_PALETTE4_RGB5_A1_OES", 0x8B94 },
> -      { "GL_PALETTE8_RGB8_OES", 0x8B95 },
> -      { "GL_PALETTE8_RGBA8_OES", 0x8B96 },
> -      { "GL_PALETTE8_R5_G6_B5_OES", 0x8B97 },
> -      { "GL_PALETTE8_RGBA4_OES", 0x8B98 },
> -      { "GL_PALETTE8_RGB5_A1_OES", 0x8B99 }
> -   };
> -   const int n = sizeof(enums) / sizeof(enums[0]);
> -   static char buffer[100];
> -   int i;
> -   for (i = 0; i < n; i++) {
> -      if (enums[i].val == val) {
> -         return enums[i].name;
> -      }
> -   }
> -   /* enum val not found, just print hexadecimal value into static buffer */
> -   snprintf(buffer, sizeof(buffer), "0x%x", val);
> -   return buffer;
> -}
> -
> -
> -/*
> - * qsort callback for string comparison.
> - */
> -static int
> -compare_string_ptr(const void *p1, const void *p2)
> -{
> -   return strcmp(* (char * const *) p1, * (char * const *) p2);
> -}
> -
> -
> -/*
> - * Print a list of extensions, with word-wrapping.
> - */
> -static void
> -print_extension_list(const char *ext, Bool singleLine)
> -{
> -   char **extensions;
> -   int num_extensions;
> -   const char *indentString = "    ";
> -   const int indent = 4;
> -   const int max = 79;
> -   int width, i, j, k;
> -
> -   if (!ext || !ext[0])
> -      return;
> -
> -   /* count the number of extensions, ignoring successive spaces */
> -   num_extensions = 0;
> -   j = 1;
> -   do {
> -      if ((ext[j] == ' ' || ext[j] == 0) && ext[j - 1] != ' ') {
> -         ++num_extensions;
> -      }
> -   } while(ext[j++]);
> -
> -   /* copy individual extensions to an array */
> -   extensions = malloc(num_extensions * sizeof *extensions);
> -   if (!extensions) {
> -      fprintf(stderr, "Error: malloc() failed\n");
> -      exit(1);
> -   }
> -   i = j = k = 0;
> -   while (1) {
> -      if (ext[j] == ' ' || ext[j] == 0) {
> -         /* found end of an extension name */
> -         const int len = j - i;
> -
> -         if (len) {
> -            assert(k < num_extensions);
> -
> -            extensions[k] = malloc(len + 1);
> -            if (!extensions[k]) {
> -               fprintf(stderr, "Error: malloc() failed\n");
> -               exit(1);
> -            }
> -
> -            memcpy(extensions[k], ext + i, len);
> -            extensions[k][len] = 0;
> -
> -            ++k;
> -         };
> -
> -         i += len + 1;
> -
> -         if (ext[j] == 0) {
> -            break;
> -         }
> -      }
> -      j++;
> -   }
> -   assert(k == num_extensions);
> -
> -   /* sort extensions alphabetically */
> -   qsort(extensions, num_extensions, sizeof extensions[0], compare_string_ptr);
> -
> -   /* print the extensions */
> -   width = indent;
> -   printf("%s", indentString);
> -   for (k = 0; k < num_extensions; ++k) {
> -      const int len = strlen(extensions[k]);
> -      if ((!singleLine) && (width + len > max)) {
> -         /* start a new line */
> -         printf("\n");
> -         width = indent;
> -         printf("%s", indentString);
> -      }
> -      /* print the extension name */
> -      printf("%s", extensions[k]);
> -
> -      /* either we're all done, or we'll continue with next extension */
> -      width += len + 1;
> -
> -      if (singleLine) {
> -         printf("\n");
> -         width = indent;
> -         printf("%s", indentString);
> -      }
> -      else if (k < (num_extensions -1)) {
> -         printf(", ");
> -         width += 2;
> -      }
> -   }
> -   printf("\n");
> -
> -   for (k = 0; k < num_extensions; ++k) {
> -      free(extensions[k]);
> -   }
> -   free(extensions);
> -}
> -
> -
> -/**
> - * Get list of OpenGL extensions using core profile's glGetStringi().
> - */
> -static char *
> -build_core_profile_extension_list(void)
> -{
> -   GLint i, n, totalLen;
> -   char *buffer;
> -   static PFNGLGETSTRINGIPROC glGetStringi_func = NULL;
> -
> -   if (!glGetStringi_func) {
> -      glGetStringi_func = (PFNGLGETSTRINGIPROC)
> -         glXGetProcAddressARB((GLubyte *) "glGetStringi");
> -   }
> -
> -   glGetIntegerv(GL_NUM_EXTENSIONS, &n);
> -
> -   /* compute totalLen */
> -   totalLen = 0;
> -   for (i = 0; i < n; i++) {
> -      const char *ext = (const char *) glGetStringi_func(GL_EXTENSIONS, i);
> -      totalLen += strlen(ext) + 1; /* plus a space */
> -   }
> -
> -   buffer = malloc(totalLen + 1);
> -   if (buffer) {
> -      int pos = 0;
> -      for (i = 0; i < n; i++) {
> -         const char *ext = (const char *) glGetStringi_func(GL_EXTENSIONS, i);
> -         strcpy(buffer + pos, ext);
> -         pos += strlen(ext);
> -         buffer[pos++] = ' ';
> -      }
> -      buffer[pos] = '\0';
> -   }
> -   return buffer;
> -}
> -
> -
> -
>  static void
>  print_display_info(Display *dpy)
>  {
> @@ -444,351 +161,6 @@ print_display_info(Display *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 common_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" },
> -      { (GLenum) 0, NULL }
> -   };
> -   static const struct token_name fragment_limits[] = {
> -      { 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; common_limits[i].token; i++) {
> -      GetProgramivARB_func(target, common_limits[i].token, max);
> -      if (glGetError() == GL_NO_ERROR) {
> -         printf("        %s = %d\n", common_limits[i].name, max[0]);
> -      }
> -   }
> -   if (target == GL_FRAGMENT_PROGRAM_ARB) {
> -      for (i = 0; fragment_limits[i].token; i++) {
> -         GetProgramivARB_func(target, fragment_limits[i].token, max);
> -         if (glGetError() == GL_NO_ERROR) {
> -            printf("        %s = %d\n", fragment_limits[i].name, max[0]);
> -         }
> -      }
> -   }
> -#endif /* GL_ARB_vertex_program / GL_ARB_fragment_program */
> -}
> -
> -struct token_name {
> -   GLenum token;
> -   const char *name;
> -};
> -
> -static void
> -print_shader_limit_list(const struct token_name *lim)
> -{
> -   GLint max[1];
> -   unsigned i;
> -
> -   for (i = 0; lim[i].token; i++) {
> -      glGetIntegerv(lim[i].token, max);
> -      if (glGetError() == GL_NO_ERROR) {
> -	 printf("        %s = %d\n", lim[i].name, max[0]);
> -      }
> -   }
> -}
> -
> -/**
> - * Print interesting limits for vertex/fragment shaders.
> - */
> -static void
> -print_shader_limits(GLenum target)
> -{
> -   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" },
> -      { GL_MAX_VERTEX_OUTPUT_COMPONENTS  , "GL_MAX_VERTEX_OUTPUT_COMPONENTS  " },
> -      { (GLenum) 0, NULL }
> -   };
> -   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" },
> -      { GL_MAX_FRAGMENT_INPUT_COMPONENTS , "GL_MAX_FRAGMENT_INPUT_COMPONENTS " },
> -      { (GLenum) 0, NULL }
> -   };
> -   static const struct token_name geometry_limits[] = {
> -      { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS, "GL_MAX_GEOMETRY_UNIFORM_COMPONENTS" },
> -      { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS, "GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS" },
> -      { GL_MAX_GEOMETRY_OUTPUT_VERTICES  , "GL_MAX_GEOMETRY_OUTPUT_VERTICES  " },
> -      { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS, "GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS" },
> -      { GL_MAX_GEOMETRY_INPUT_COMPONENTS , "GL_MAX_GEOMETRY_INPUT_COMPONENTS " },
> -      { GL_MAX_GEOMETRY_OUTPUT_COMPONENTS, "GL_MAX_GEOMETRY_OUTPUT_COMPONENTS" },
> -      { (GLenum) 0, NULL }
> -   };
> -
> -   switch (target) {
> -   case GL_VERTEX_SHADER:
> -      printf("    GL_VERTEX_SHADER_ARB:\n");
> -      print_shader_limit_list(vertex_limits);
> -      break;
> -
> -   case GL_FRAGMENT_SHADER:
> -      printf("    GL_FRAGMENT_SHADER_ARB:\n");
> -      print_shader_limit_list(fragment_limits);
> -      break;
> -
> -   case GL_GEOMETRY_SHADER:
> -      printf("    GL_GEOMETRY_SHADER:\n");
> -      print_shader_limit_list(geometry_limits);
> -      break;
> -   }
> -}
> -
> -
> -/** Is extension 'ext' supported? */
> -static int
> -extension_supported(const char *ext, const char *extensionsList)
> -{
> -   const char *p = strstr(extensionsList, ext);
> -   if (p) {
> -      /* check that next char is a space or end of string */
> -      int extLen = strlen(ext);
> -      if (p[extLen] == 0 || p[extLen] == ' ')
> -         return 1;
> -   }
> -   return 0;
> -}
> -
> -
> -/**
> - * Print interesting OpenGL implementation limits.
> - */
> -static void
> -print_limits(const char *extensions, const char *oglstring)
> -{
> -   struct token_name {
> -      GLuint count;
> -      GLenum token;
> -      const char *name;
> -      const char *extension;
> -   };
> -   static const struct token_name limits[] = {
> -      { 1, GL_MAX_ATTRIB_STACK_DEPTH, "GL_MAX_ATTRIB_STACK_DEPTH", NULL },
> -      { 1, GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, "GL_MAX_CLIENT_ATTRIB_STACK_DEPTH", NULL },
> -      { 1, GL_MAX_CLIP_PLANES, "GL_MAX_CLIP_PLANES", NULL },
> -      { 1, GL_MAX_COLOR_MATRIX_STACK_DEPTH, "GL_MAX_COLOR_MATRIX_STACK_DEPTH", "GL_ARB_imaging" },
> -      { 1, GL_MAX_ELEMENTS_VERTICES, "GL_MAX_ELEMENTS_VERTICES", NULL },
> -      { 1, GL_MAX_ELEMENTS_INDICES, "GL_MAX_ELEMENTS_INDICES", NULL },
> -      { 1, GL_MAX_EVAL_ORDER, "GL_MAX_EVAL_ORDER", NULL },
> -      { 1, GL_MAX_LIGHTS, "GL_MAX_LIGHTS", NULL },
> -      { 1, GL_MAX_LIST_NESTING, "GL_MAX_LIST_NESTING", NULL },
> -      { 1, GL_MAX_MODELVIEW_STACK_DEPTH, "GL_MAX_MODELVIEW_STACK_DEPTH", NULL },
> -      { 1, GL_MAX_NAME_STACK_DEPTH, "GL_MAX_NAME_STACK_DEPTH", NULL },
> -      { 1, GL_MAX_PIXEL_MAP_TABLE, "GL_MAX_PIXEL_MAP_TABLE", NULL },
> -      { 1, GL_MAX_PROJECTION_STACK_DEPTH, "GL_MAX_PROJECTION_STACK_DEPTH", NULL },
> -      { 1, GL_MAX_TEXTURE_STACK_DEPTH, "GL_MAX_TEXTURE_STACK_DEPTH", NULL },
> -      { 1, GL_MAX_TEXTURE_SIZE, "GL_MAX_TEXTURE_SIZE", NULL },
> -      { 1, GL_MAX_3D_TEXTURE_SIZE, "GL_MAX_3D_TEXTURE_SIZE", NULL },
> -      { 2, GL_MAX_VIEWPORT_DIMS, "GL_MAX_VIEWPORT_DIMS", NULL },
> -      { 2, GL_ALIASED_LINE_WIDTH_RANGE, "GL_ALIASED_LINE_WIDTH_RANGE", NULL },
> -      { 2, GL_SMOOTH_LINE_WIDTH_RANGE, "GL_SMOOTH_LINE_WIDTH_RANGE", NULL },
> -      { 2, GL_ALIASED_POINT_SIZE_RANGE, "GL_ALIASED_POINT_SIZE_RANGE", NULL },
> -      { 2, GL_SMOOTH_POINT_SIZE_RANGE, "GL_SMOOTH_POINT_SIZE_RANGE", NULL },
> -#if defined(GL_ARB_texture_cube_map)
> -      { 1, GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, "GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB", "GL_ARB_texture_cube_map" },
> -#endif
> -#if defined(GL_NV_texture_rectangle)
> -      { 1, GL_MAX_RECTANGLE_TEXTURE_SIZE_NV, "GL_MAX_RECTANGLE_TEXTURE_SIZE_NV", "GL_NV_texture_rectangle" },
> -#endif
> -#if defined(GL_ARB_multitexture)
> -      { 1, GL_MAX_TEXTURE_UNITS_ARB, "GL_MAX_TEXTURE_UNITS_ARB", "GL_ARB_multitexture" },
> -#endif
> -#if defined(GL_EXT_texture_lod_bias)
> -      { 1, GL_MAX_TEXTURE_LOD_BIAS_EXT, "GL_MAX_TEXTURE_LOD_BIAS_EXT", "GL_EXT_texture_lod_bias" },
> -#endif
> -#if defined(GL_EXT_texture_filter_anisotropic)
> -      { 1, GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, "GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT", "GL_EXT_texture_filter_anisotropic" },
> -#endif
> -#if defined(GL_ARB_draw_buffers)
> -      { 1, GL_MAX_DRAW_BUFFERS_ARB, "GL_MAX_DRAW_BUFFERS_ARB", "GL_ARB_draw_buffers" },
> -#endif
> -#if defined(GL_ARB_blend_func_extended)
> -      { 1, GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, "GL_MAX_DUAL_SOURCE_DRAW_BUFFERS", "GL_ARB_blend_func_extended" },
> -#endif
> -#if defined (GL_ARB_framebuffer_object)
> -      { 1, GL_MAX_RENDERBUFFER_SIZE, "GL_MAX_RENDERBUFFER_SIZE", "GL_ARB_framebuffer_object" },
> -      { 1, GL_MAX_COLOR_ATTACHMENTS, "GL_MAX_COLOR_ATTACHMENTS", "GL_ARB_framebuffer_object" },
> -      { 1, GL_MAX_SAMPLES, "GL_MAX_SAMPLES", "GL_ARB_framebuffer_object" },
> -#endif
> -      { 0, (GLenum) 0, NULL, NULL }
> -   };
> -   GLint i, max[2];
> -
> -   printf("%s limits:\n", oglstring);
> -   for (i = 0; limits[i].count; i++) {
> -      if (!limits[i].extension ||
> -          extension_supported(limits[i].extension, extensions)) {
> -         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 */
> -   if (extension_supported("GL_ARB_imaging", extensions)) {
> -      glGetConvolutionParameteriv(GL_CONVOLUTION_2D, GL_MAX_CONVOLUTION_WIDTH, max);
> -      glGetConvolutionParameteriv(GL_CONVOLUTION_2D, GL_MAX_CONVOLUTION_HEIGHT, max+1);
> -      printf("    GL_MAX_CONVOLUTION_WIDTH/HEIGHT = %d, %d\n", max[0], max[1]);
> -   }
> -
> -   if (extension_supported("GL_ARB_texture_compression", extensions)) {
> -      GLint i, n;
> -      GLint *formats;
> -      glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &n);
> -      printf("    GL_NUM_COMPRESSED_TEXTURE_FORMATS = %d\n", n);
> -      formats = (GLint *) malloc(n * sizeof(GLint));
> -      glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, formats);
> -      for (i = 0; i < n; i++) {
> -         printf("        %s\n", enum_name(formats[i]));
> -      }
> -      free(formats);
> -   }
> -#if defined(GL_ARB_vertex_program)
> -   if (extension_supported("GL_ARB_vertex_program", extensions)) {
> -      print_program_limits(GL_VERTEX_PROGRAM_ARB);
> -   }
> -#endif
> -#if defined(GL_ARB_fragment_program)
> -   if (extension_supported("GL_ARB_fragment_program", extensions)) {
> -      print_program_limits(GL_FRAGMENT_PROGRAM_ARB);
> -   }
> -#endif
> -   if (extension_supported("GL_ARB_vertex_shader", extensions)) {
> -      print_shader_limits(GL_VERTEX_SHADER_ARB);
> -   }
> -   if (extension_supported("GL_ARB_fragment_shader", extensions)) {
> -      print_shader_limits(GL_FRAGMENT_SHADER_ARB);
> -   }
> -   if (version >= 32) {
> -      print_shader_limits(GL_GEOMETRY_SHADER);
> -   }
> -}
> -
> -
> -struct bit_info
> -{
> -   int bit;
> -   const char *name;
> -};
> -
> -
> -/**
> - * Return string representation for bits in a bitmask.
> - */
> -static const char *
> -bitmask_to_string(const struct bit_info bits[], int numBits, int mask)
> -{
> -   static char buffer[256], *p;
> -   int i;
> -
> -   strcpy(buffer, "(none)");
> -   p = buffer;
> -   for (i = 0; i < numBits; i++) {
> -      if (mask & bits[i].bit) {
> -         if (p > buffer)
> -            *p++ = ',';
> -         strcpy(p, bits[i].name);
> -         p += strlen(bits[i].name);
> -      }
> -   }
> -
> -   return buffer;
> -}
> -
> -/**
> - * Return string representation for the bitmask returned by
> - * GL_CONTEXT_PROFILE_MASK (OpenGL 3.2 or later).
> - */
> -static const char *
> -profile_mask_string(int mask)
> -{
> -   const static struct bit_info bits[] = {
> -#ifdef GL_CONTEXT_CORE_PROFILE_BIT
> -      { GL_CONTEXT_CORE_PROFILE_BIT, "core profile"},
> -#endif
> -#ifdef GL_CONTEXT_COMPATIBILITY_PROFILE_BIT
> -      { GL_CONTEXT_COMPATIBILITY_PROFILE_BIT, "compatibility profile" }
> -#endif
> -   };
> -
> -   return bitmask_to_string(bits, ELEMENTS(bits), mask);
> -}
> -
> -
> -/**
> - * Return string representation for the bitmask returned by
> - * GL_CONTEXT_FLAGS (OpenGL 3.0 or later).
> - */
> -static const char *
> -context_flags_string(int mask)
> -{
> -   const static struct bit_info bits[] = {
> -#ifdef GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT
> -      { GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT, "forward-compatible" },
> -#endif
> -#ifdef GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
> -      { GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB, "robust-access" },
> -#endif
> -   };
> -
> -   return bitmask_to_string(bits, ELEMENTS(bits), mask);
> -}
> -
> -
> -/**
>   * Choose a simple FB Config.
>   */
>  static GLXFBConfig *
> @@ -1082,11 +454,21 @@ print_screen_info(Display *dpy, int scrnum, Bool allowDirect,
>        int glxVersionMinor;
>        char *displayName = NULL;
>        char *colon = NULL, *period = NULL;
> +      struct ext_functions extfuncs;
>  
>        CheckError(__LINE__);
> +
> +      /* Get some ext functions */
> +      extfuncs.GetProgramivARB = (GETPROGRAMIVARBPROC)
> +         glXGetProcAddressARB((GLubyte *) "glGetProgramivARB");
> +      extfuncs.GetStringi = (GETSTRINGIPROC)
> +         glXGetProcAddressARB((GLubyte *) "glGetStringi");
> +      extfuncs.GetConvolutionParameteriv = (GETCONVOLUTIONPARAMETERIVPROC)
> +         glXGetProcAddressARB((GLubyte *) "glGetConvolutionParameteriv");
> +
>        /* Get list of GL extensions */
>        if (coreProfile) {
> -         glExtensions = build_core_profile_extension_list();
> +         glExtensions = build_core_profile_extension_list(&extfuncs);
>        }
>        else {
>           glExtensions = (char *) glGetString(GL_EXTENSIONS);
> @@ -1183,8 +565,9 @@ print_screen_info(Display *dpy, int scrnum, Bool allowDirect,
>  
>        CheckError(__LINE__);
>  
> -      if (limits)
> -         print_limits(glExtensions, oglstring);
> +      if (limits) {
> +         print_limits(glExtensions, oglstring, version, &extfuncs);
> +      }
>  
>        if (coreProfile)
>           free(glExtensions);
> 



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