a1234ee8d1
This adds a _cogl_init function for Cogl that we expect to be the first thing called before anything else is done with Cogl. It's not a public API so it's expected that all entry points for Cogl that might be the first function used should call _cogl_init(). We currently call _cogl_init() in these functions: cogl_renderer_new cogl_display_new cogl_context_new cogl_android_set_native_window _cogl_init() can be called multiple times, and only the first call has any affect. For example _cogl_init() gives us a place check and parse the COGL_DEBUG environment variable. Since we don't have any need to parse command line arguments (we can always get user configuration options from the environment) our init function doesn't require argc/argv pointers. By saying up front that we aren't interested in command line arguments that means we can avoid the mess that is GOption based library initialization which is extremely fragile due to its lack of dependency tracking between modules. Signed-off-by: Neil Roberts <neil@linux.intel.com>
258 lines
8.4 KiB
C
258 lines
8.4 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.h"
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#include "cogl-private.h"
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#include "cogl-debug.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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{ "handle", COGL_DEBUG_HANDLE },
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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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};
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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 int _cogl_debug_flags[COGL_DEBUG_N_INTS];
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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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gboolean enable,
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const GDebugKey *keys,
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unsigned int nkeys)
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{
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int int_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 a guint but we may have multiple guints so we need to
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build a separate array for each possible guint */
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for (int_num = 0; int_num < COGL_DEBUG_N_INTS; int_num++)
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{
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GDebugKey keys_for_int[sizeof (unsigned int) * 8];
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unsigned int mask_for_int;
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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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if (COGL_FLAGS_GET_INDEX (keys[key_num].value) == 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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nkeys_for_int++;
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}
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if (nkeys_for_int > 0)
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{
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mask_for_int = g_parse_debug_string (value,
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keys_for_int,
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nkeys_for_int);
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if (enable)
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_cogl_debug_flags[int_num] |= mask_for_int;
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else
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_cogl_debug_flags[int_num] &= ~mask_for_int;
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}
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}
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}
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static void
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_cogl_parse_debug_string (const char *value,
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gboolean enable,
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gboolean 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 (strcmp (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 ":", 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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"Enables all non-behavioural debug options");
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OPT (IGNORED, "ignored", "verbose", "ignored", \
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"Enables all non-behavioural debug options");
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#undef OPT
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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 gboolean
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cogl_arg_debug_cb (const char *key,
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const char *value,
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gpointer 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 gboolean
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cogl_arg_no_debug_cb (const char *key,
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const char *value,
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gpointer 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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}
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static gboolean
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pre_parse_hook (GOptionContext *context,
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GOptionGroup *group,
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gpointer 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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