src/mesa/drivers/dri/i965/intel_debug.c

   1 /*
   2  * Copyright 2003 VMware, Inc.
   3  * Copyright © 2006 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 /**
  26  * \file intel_debug.c
  27  *
  28  * Support for the INTEL_DEBUG environment variable, along with other
  29  * miscellaneous debugging code.
  30  */
  31
  32 #include "brw_context.h"
  33 #include "intel_debug.h"
  34 #include "utils.h"
  35 #include "util/u_atomic.h" /* for p_atomic_cmpxchg */
  36
  37 uint64_t INTEL_DEBUG = 0;
  38
  39 static const struct dri_debug_control debug_control[] = {
  40    { "tex",         DEBUG_TEXTURE},
  41    { "state",       DEBUG_STATE},
  42    { "blit",        DEBUG_BLIT},
  43    { "mip",         DEBUG_MIPTREE},
  44    { "fall",        DEBUG_PERF},
  45    { "perf",        DEBUG_PERF},
  46    { "perfmon",     DEBUG_PERFMON},
  47    { "bat",         DEBUG_BATCH},
  48    { "pix",         DEBUG_PIXEL},
  49    { "buf",         DEBUG_BUFMGR},
  50    { "fbo",         DEBUG_FBO},
  51    { "fs",          DEBUG_WM },
  52    { "gs",          DEBUG_GS},
  53    { "sync",        DEBUG_SYNC},
  54    { "prim",        DEBUG_PRIMS },
  55    { "vert",        DEBUG_VERTS },
  56    { "dri",         DEBUG_DRI },
  57    { "sf",          DEBUG_SF },
  58    { "stats",       DEBUG_STATS },
  59    { "wm",          DEBUG_WM },
  60    { "urb",         DEBUG_URB },
  61    { "vs",          DEBUG_VS },
  62    { "clip",        DEBUG_CLIP },
  63    { "aub",         DEBUG_AUB },
  64    { "shader_time", DEBUG_SHADER_TIME },
  65    { "no16",        DEBUG_NO16 },
  66    { "blorp",       DEBUG_BLORP },
  67    { "nodualobj",   DEBUG_NO_DUAL_OBJECT_GS },
  68    { "optimizer",   DEBUG_OPTIMIZER },
  69    { "ann",         DEBUG_ANNOTATION },
  70    { "no8",         DEBUG_NO8 },
  71    { "vec4vs",      DEBUG_VEC4VS },
  72    { "spill",       DEBUG_SPILL },
  73    { "cs",          DEBUG_CS },
  74    { NULL,    0 }
  75 };
  76
  77 uint64_t
  78 intel_debug_flag_for_shader_stage(gl_shader_stage stage)
  79 {
  80    uint64_t flags[] = {
  81       [MESA_SHADER_VERTEX] = DEBUG_VS,
  82       [MESA_SHADER_GEOMETRY] = DEBUG_GS,
  83       [MESA_SHADER_FRAGMENT] = DEBUG_WM,
  84       [MESA_SHADER_COMPUTE] = DEBUG_CS,
  85    };
  86    STATIC_ASSERT(MESA_SHADER_STAGES == 4);
  87    return flags[stage];
  88 }
  89
  90 void
  91 brw_process_intel_debug_variable(struct brw_context *brw)
  92 {
  93    uint64_t intel_debug = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
  94    (void) p_atomic_cmpxchg(&INTEL_DEBUG, 0, intel_debug);
  95
  96    if (INTEL_DEBUG & DEBUG_BUFMGR)
  97       dri_bufmgr_set_debug(brw->bufmgr, true);
  98
  99    if ((INTEL_DEBUG & DEBUG_SHADER_TIME) && brw->gen < 7) {
 100       fprintf(stderr,
 101               "shader_time debugging requires gen7 (Ivybridge) or better.\n");
 102       INTEL_DEBUG &= ~DEBUG_SHADER_TIME;
 103    }
 104
 105    if (INTEL_DEBUG & DEBUG_PERF)
 106       brw->perf_debug = true;
 107
 108    if (INTEL_DEBUG & DEBUG_AUB)
 109       drm_intel_bufmgr_gem_set_aub_dump(brw->bufmgr, true);
 110 }
 111
 112 /**
 113  * Reads an environment variable and interprets its value as a boolean.
 114  *
 115  * Recognizes 0/false/no and 1/true/yes.  Other values result in the default value.
 116  */
 117 bool
 118 brw_env_var_as_boolean(const char *var_name, bool default_value)
 119 {
 120    const char *str = getenv(var_name);
 121    if (str == NULL)
 122       return default_value;
 123
 124    if (strcmp(str, "1") == 0 ||
 125        strcasecmp(str, "true") == 0 ||
 126        strcasecmp(str, "yes") == 0) {
 127       return true;
 128    } else if (strcmp(str, "0") == 0 ||
 129               strcasecmp(str, "false") == 0 ||
 130               strcasecmp(str, "no") == 0) {
 131       return false;
 132    } else {
 133       return default_value;
 134    }
 135 }