src/gallium/drivers/r300/r300_debug.c

   1 /*
   2  * Copyright 2009 Nicolai Haehnle <nhaehnle@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "r300_context.h"
  24
  25 #include <ctype.h>
  26
  27
  28 struct debug_option {
  29     const char * name;
  30     unsigned flag;
  31     const char * description;
  32 };
  33
  34 static struct debug_option debug_options[] = {
  35     { "help", DBG_HELP, "Helpful meta-information about the driver" },
  36     { "fp", DBG_FP, "Fragment program handling" },
  37     { "vp", DBG_VP, "Vertex program handling" },
  38     { "cs", DBG_CS, "Command submissions" },
  39     { "draw", DBG_DRAW, "Draw and emit" },
  40     { "tex", DBG_TEX, "Textures" },
  41     { "fall", DBG_FALL, "Fallbacks" },
  42
  43     { "all", ~0, "Convenience option that enables all debug flags" },
  44
  45     /* must be last */
  46     { 0, 0, 0 }
  47 };
  48
  49 void r300_init_debug(struct r300_context * ctx)
  50 {
  51     const char * options = debug_get_option("RADEON_DEBUG", 0);
  52     boolean printhint = false;
  53     size_t length;
  54     struct debug_option * opt;
  55
  56     if (options) {
  57         while(*options) {
  58             if (*options == ' ' || *options == ',') {
  59                 options++;
  60                 continue;
  61             }
  62
  63             length = strcspn(options, " ,");
  64
  65             for(opt = debug_options; opt->name; ++opt) {
  66                 if (!strncmp(options, opt->name, length)) {
  67                     ctx->debug |= opt->flag;
  68                     break;
  69                 }
  70             }
  71
  72             if (!opt->name) {
  73                 debug_printf("Unknown debug option: %s\n", options);
  74                 printhint = true;
  75             }
  76
  77             options += length;
  78         }
  79
  80         if (!ctx->debug)
  81             printhint = true;
  82     }
  83
  84     if (printhint || ctx->debug & DBG_HELP) {
  85         debug_printf("You can enable debug output by setting the RADEON_DEBUG environment variable\n"
  86                      "to a comma-separated list of debug options. Available options are:\n");
  87         for(opt = debug_options; opt->name; ++opt) {
  88             debug_printf("    %s: %s\n", opt->name, opt->description);
  89         }
  90     }
  91 }