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54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
100 lines
3.3 KiB
C
100 lines
3.3 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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#ifndef __COGL_FEATURE_PRIVATE_H
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#define __COGL_FEATURE_PRIVATE_H
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#include <glib.h>
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#include "cogl-internal.h"
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#define COGL_CHECK_GL_VERSION(driver_major, driver_minor, \
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target_major, target_minor) \
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((driver_major) > (target_major) || \
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((driver_major) == (target_major) && (driver_minor) >= (target_minor)))
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typedef enum
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{
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COGL_EXT_IN_GLES = (1 << 0),
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COGL_EXT_IN_GLES2 = (1 << 1)
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} CoglExtGlesAvailability;
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typedef struct _CoglFeatureFunction CoglFeatureFunction;
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struct _CoglFeatureFunction
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{
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/* The name of the function without the "EXT" or "ARB" suffix */
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const char *name;
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/* The offset in the context of where to store the function pointer */
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unsigned int pointer_offset;
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};
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typedef struct _CoglFeatureData CoglFeatureData;
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struct _CoglFeatureData
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{
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/* A minimum GL version which the functions should be defined in
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without needing an extension. Set to 255,255 if it's only
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provided in an extension */
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int min_gl_major, min_gl_minor;
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/* Flags specifying which versions of GLES the feature is available
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in core in */
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CoglExtGlesAvailability gles_availability;
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/* \0 separated list of namespaces to try. Eg "EXT\0ARB\0" */
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const char *namespaces;
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/* \0 separated list of required extension names without the GL_EXT
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or GL_ARB prefix. Any of the extensions must be available for the
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feature to be considered available. If the suffix for an
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extension is different from the namespace, you can specify it
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with a ':' after the namespace */
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const char *extension_names;
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/* A set of feature flags to enable if the extension is available */
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CoglFeatureFlags feature_flags;
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/* A set of private feature flags to enable if the extension is
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* available */
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int feature_flags_private;
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/* An optional corresponding winsys feature. */
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CoglWinsysFeature winsys_feature;
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/* A list of functions required for this feature. Terminated with a
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NULL name */
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const CoglFeatureFunction *functions;
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};
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CoglBool
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_cogl_feature_check (CoglRenderer *renderer,
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const char *driver_prefix,
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const CoglFeatureData *data,
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int gl_major,
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int gl_minor,
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CoglDriver driver,
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const char *extensions_string,
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void *function_table);
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void
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_cogl_feature_check_ext_functions (CoglContext *context,
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int gl_major,
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int gl_minor,
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const char *gl_extensions);
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#endif /* __COGL_FEATURE_PRIVATE_H */
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