74fd618df9
This adds two new configuration environment variables: COGL_DISABLE_GL_EXTENSIONS and COGL_OVERRIDE_GL_VERSION The variables can also be set in the cogl.conf file using the same names. The first one is a list of GL extension names separated by commas. When set Cogl will assume any extension listed here is not available by removing it from the string returned from glGetString(GL_EXTENSIONS). If the string is set in both the config file and the environment variable then the union of the two lists will be used. The second overrides the value returned from glGetString(GL_VERSION). If the string is set in both places the version from the environment variable will take priority. These are sometimes useful for debugging Cogl to test the various combinations of extensions. It could also be useful to work around driver bugs where an extension is badly supported and it would be better not to use it. The variables in cogl-config that just set a global char * variable have been put together in an array instead of having a separate blob of code for each one in order to make it simpler to add new variables. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit ec69c2dc576c78664e0b73879365cb7414ecf441)
298 lines
9.9 KiB
C
298 lines
9.9 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <glib/gi18n-lib.h>
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#include "cogl-private.h"
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#include "cogl-debug.h"
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#include "cogl1-context.h"
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/* XXX: If you add a debug option, please also add an option
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* definition to cogl-debug-options.h. This will enable us - for
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* example - to emit a "help" description for the option.
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*/
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/* NB: Only these options get enabled if COGL_DEBUG=all is
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* used since they don't affect the behaviour of Cogl they
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* simply print out verbose information */
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static const GDebugKey cogl_log_debug_keys[] = {
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{ "object", COGL_DEBUG_OBJECT },
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{ "slicing", COGL_DEBUG_SLICING },
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{ "atlas", COGL_DEBUG_ATLAS },
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{ "blend-strings", COGL_DEBUG_BLEND_STRINGS },
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{ "journal", COGL_DEBUG_JOURNAL },
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{ "batching", COGL_DEBUG_BATCHING },
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{ "matrices", COGL_DEBUG_MATRICES },
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{ "draw", COGL_DEBUG_DRAW },
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{ "opengl", COGL_DEBUG_OPENGL },
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{ "pango", COGL_DEBUG_PANGO },
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{ "show-source", COGL_DEBUG_SHOW_SOURCE},
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{ "offscreen", COGL_DEBUG_OFFSCREEN },
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{ "texture-pixmap", COGL_DEBUG_TEXTURE_PIXMAP },
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{ "bitmap", COGL_DEBUG_BITMAP },
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{ "clipping", COGL_DEBUG_CLIPPING },
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{ "winsys", COGL_DEBUG_WINSYS },
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{ "performance", COGL_DEBUG_PERFORMANCE }
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};
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static const int n_cogl_log_debug_keys =
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G_N_ELEMENTS (cogl_log_debug_keys);
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static const GDebugKey cogl_behavioural_debug_keys[] = {
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{ "rectangles", COGL_DEBUG_RECTANGLES },
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{ "disable-batching", COGL_DEBUG_DISABLE_BATCHING },
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{ "disable-vbos", COGL_DEBUG_DISABLE_VBOS },
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{ "disable-pbos", COGL_DEBUG_DISABLE_PBOS },
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{ "disable-software-transform", COGL_DEBUG_DISABLE_SOFTWARE_TRANSFORM },
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{ "dump-atlas-image", COGL_DEBUG_DUMP_ATLAS_IMAGE },
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{ "disable-atlas", COGL_DEBUG_DISABLE_ATLAS },
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{ "disable-shared-atlas", COGL_DEBUG_DISABLE_SHARED_ATLAS },
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{ "disable-texturing", COGL_DEBUG_DISABLE_TEXTURING},
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{ "disable-arbfp", COGL_DEBUG_DISABLE_ARBFP},
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{ "disable-fixed", COGL_DEBUG_DISABLE_FIXED},
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{ "disable-glsl", COGL_DEBUG_DISABLE_GLSL},
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{ "disable-blending", COGL_DEBUG_DISABLE_BLENDING},
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{ "disable-npot-textures", COGL_DEBUG_DISABLE_NPOT_TEXTURES},
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{ "wireframe", COGL_DEBUG_WIREFRAME},
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{ "disable-software-clip", COGL_DEBUG_DISABLE_SOFTWARE_CLIP},
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{ "disable-program-caches", COGL_DEBUG_DISABLE_PROGRAM_CACHES},
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{ "disable-fast-read-pixel", COGL_DEBUG_DISABLE_FAST_READ_PIXEL}
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};
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static const int n_cogl_behavioural_debug_keys =
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G_N_ELEMENTS (cogl_behavioural_debug_keys);
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unsigned long _cogl_debug_flags[COGL_DEBUG_N_LONGS];
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GHashTable *_cogl_debug_instances;
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static void
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_cogl_parse_debug_string_for_keys (const char *value,
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CoglBool enable,
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const GDebugKey *keys,
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unsigned int nkeys)
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{
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int long_num, key_num;
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/* g_parse_debug_string expects the value field in GDebugKey to be a
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mask in an unsigned int but the flags are stored in an array of
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multiple longs so we need to build a separate array for each
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possible unsigned int */
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for (long_num = 0; long_num < COGL_DEBUG_N_LONGS; long_num++)
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{
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int int_num;
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for (int_num = 0;
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int_num < sizeof (unsigned long) / sizeof (unsigned int);
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int_num++)
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{
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GDebugKey keys_for_int[sizeof (unsigned int) * 8];
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int nkeys_for_int = 0;
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for (key_num = 0; key_num < nkeys; key_num++)
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{
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int long_index = COGL_FLAGS_GET_INDEX (keys[key_num].value);
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int int_index = (keys[key_num].value %
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(sizeof (unsigned long) * 8) /
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(sizeof (unsigned int) * 8));
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if (long_index == long_num && int_index == int_num)
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{
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keys_for_int[nkeys_for_int] = keys[key_num];
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keys_for_int[nkeys_for_int].value =
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COGL_FLAGS_GET_MASK (keys[key_num].value) >>
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(int_num * sizeof (unsigned int) * 8);
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nkeys_for_int++;
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}
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}
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if (nkeys_for_int > 0)
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{
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unsigned long mask =
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((unsigned long) g_parse_debug_string (value,
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keys_for_int,
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nkeys_for_int)) <<
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(int_num * sizeof (unsigned int) * 8);
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if (enable)
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_cogl_debug_flags[long_num] |= mask;
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else
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_cogl_debug_flags[long_num] &= ~mask;
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}
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}
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}
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}
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void
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_cogl_parse_debug_string (const char *value,
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CoglBool enable,
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CoglBool ignore_help)
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{
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if (ignore_help && strcmp (value, "help") == 0)
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return;
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/* We don't want to let g_parse_debug_string handle "all" because
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* literally enabling all the debug options wouldn't be useful to
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* anyone; instead the all option enables all non behavioural
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* options.
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*/
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if (strcmp (value, "all") == 0 ||
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strcmp (value, "verbose") == 0)
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{
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int i;
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for (i = 0; i < n_cogl_log_debug_keys; i++)
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if (enable)
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COGL_DEBUG_SET_FLAG (cogl_log_debug_keys[i].value);
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else
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COGL_DEBUG_CLEAR_FLAG (cogl_log_debug_keys[i].value);
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}
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else if (g_ascii_strcasecmp (value, "help") == 0)
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{
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g_printerr ("\n\n%28s\n", _("Supported debug values:"));
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#define OPT(MASK_NAME, GROUP, NAME, NAME_FORMATTED, DESCRIPTION) \
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g_printerr ("%28s %s\n", NAME ":", g_dgettext (GETTEXT_PACKAGE, \
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DESCRIPTION));
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#include "cogl-debug-options.h"
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g_printerr ("\n%28s\n", _("Special debug values:"));
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OPT (IGNORED, "ignored", "all", "ignored", \
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N_("Enables all non-behavioural debug options"));
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OPT (IGNORED, "ignored", "verbose", "ignored", \
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N_("Enables all non-behavioural debug options"));
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#undef OPT
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g_printerr ("\n"
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"%28s\n"
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" COGL_DISABLE_GL_EXTENSIONS: %s\n"
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" COGL_OVERRIDE_GL_VERSION: %s\n",
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_("Additional environment variables:"),
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_("Comma-separated list of GL extensions to pretend are "
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"disabled"),
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_("Override the GL version that Cogl will assume the driver "
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"supports"));
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exit (1);
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}
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else
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{
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_cogl_parse_debug_string_for_keys (value,
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enable,
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cogl_log_debug_keys,
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n_cogl_log_debug_keys);
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_cogl_parse_debug_string_for_keys (value,
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enable,
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cogl_behavioural_debug_keys,
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n_cogl_behavioural_debug_keys);
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}
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}
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#ifdef COGL_ENABLE_DEBUG
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static CoglBool
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cogl_arg_debug_cb (const char *key,
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const char *value,
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void *user_data)
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{
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_cogl_parse_debug_string (value,
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TRUE /* enable the flags */,
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FALSE /* don't ignore help */);
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return TRUE;
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}
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static CoglBool
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cogl_arg_no_debug_cb (const char *key,
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const char *value,
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void *user_data)
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{
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_cogl_parse_debug_string (value,
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FALSE, /* disable the flags */
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TRUE /* ignore help */);
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return TRUE;
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}
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#endif /* COGL_ENABLE_DEBUG */
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static GOptionEntry cogl_args[] = {
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#ifdef COGL_ENABLE_DEBUG
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{ "cogl-debug", 0, 0, G_OPTION_ARG_CALLBACK, cogl_arg_debug_cb,
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N_("Cogl debugging flags to set"), "FLAGS" },
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{ "cogl-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, cogl_arg_no_debug_cb,
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N_("Cogl debugging flags to unset"), "FLAGS" },
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#endif /* COGL_ENABLE_DEBUG */
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{ NULL, },
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};
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void
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_cogl_debug_check_environment (void)
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{
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const char *env_string;
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env_string = g_getenv ("COGL_DEBUG");
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if (env_string != NULL)
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{
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_cogl_parse_debug_string (env_string,
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TRUE /* enable the flags */,
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FALSE /* don't ignore help */);
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env_string = NULL;
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}
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env_string = g_getenv ("COGL_NO_DEBUG");
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if (env_string != NULL)
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{
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_cogl_parse_debug_string (env_string,
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FALSE /* disable the flags */,
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FALSE /* don't ignore help */);
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env_string = NULL;
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}
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}
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static CoglBool
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pre_parse_hook (GOptionContext *context,
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GOptionGroup *group,
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void *data,
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GError **error)
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{
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_cogl_init ();
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return TRUE;
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}
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/* XXX: GOption based library initialization is not reliable because the
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* GOption API has no way to represent dependencies between libraries.
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*/
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GOptionGroup *
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cogl_get_option_group (void)
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{
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GOptionGroup *group;
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group = g_option_group_new ("cogl",
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_("Cogl Options"),
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_("Show Cogl options"),
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NULL, NULL);
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g_option_group_set_parse_hooks (group, pre_parse_hook, NULL);
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g_option_group_add_entries (group, cogl_args);
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g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
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return group;
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}
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