eb179d4b67
*** WARNING: THIS COMMIT CHANGES THE BUILD *** Do not recurse into the backend directories to build private, internal libraries. We only recurse from clutter/ into the cogl sub-directory; from there, we don't recurse any further. All the backend-specific code in Cogl and Clutter is compiled conditionally depending on the macros defined by the configure script. We still recurse from the top-level directory into doc, clutter and tests, because gtk-doc and tests do not deal nicely with non-recursive layouts. This change makes Clutter compile slightly faster, and cleans up the build system, especially when dealing with introspection data. Ideally, we also want to make Cogl part of the top-level build, so that we can finally drop the sed trick to change the shared library from the GIR before compiling it. Currently disabled: ‣ OSX backend ‣ Fruity backend Currently enabled but untested: ‣ EGL backend ‣ Windows backend
118 lines
3.8 KiB
C
118 lines
3.8 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) 2007,2008,2009 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 <string.h>
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#include "cogl.h"
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#include "cogl-internal.h"
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#include "cogl-context.h"
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#include "cogl-feature-private.h"
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gboolean
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_cogl_check_driver_valid (GError **error)
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{
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/* The GLES backend doesn't have any particular version requirements */
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return TRUE;
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}
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/* Define a set of arrays containing the functions required from GL
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for each feature */
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#define COGL_FEATURE_BEGIN(name, min_gl_major, min_gl_minor, \
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namespaces, extension_names, \
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feature_flags, feature_flags_private) \
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static const CoglFeatureFunction cogl_feature_ ## name ## _funcs[] = {
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#define COGL_FEATURE_FUNCTION(ret, name, args) \
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{ G_STRINGIFY (name), G_STRUCT_OFFSET (CoglContext, drv.pf_ ## name) },
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#define COGL_FEATURE_END() \
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{ NULL, 0 }, \
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};
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#include "cogl-feature-functions-gles.h"
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/* Define an array of features */
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#undef COGL_FEATURE_BEGIN
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#define COGL_FEATURE_BEGIN(name, min_gl_major, min_gl_minor, \
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namespaces, extension_names, \
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feature_flags, feature_flags_private) \
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{ min_gl_major, min_gl_minor, namespaces, \
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extension_names, feature_flags, feature_flags_private, \
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cogl_feature_ ## name ## _funcs },
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#undef COGL_FEATURE_FUNCTION
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#define COGL_FEATURE_FUNCTION(ret, name, args)
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#undef COGL_FEATURE_END
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#define COGL_FEATURE_END()
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static const CoglFeatureData cogl_feature_data[] =
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{
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#include "cogl-feature-functions.h"
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};
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void
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_cogl_features_init (void)
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{
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CoglFeatureFlags flags = 0;
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int max_clip_planes = 0;
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GLint num_stencil_bits = 0;
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const char *gl_extensions;
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int i;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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gl_extensions = (const char*) glGetString (GL_EXTENSIONS);
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for (i = 0; i < G_N_ELEMENTS (cogl_feature_data); i++)
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if (_cogl_feature_check ("GL", cogl_feature_data + i,
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0, 0,
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gl_extensions))
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flags |= cogl_feature_data[i].feature_flags;
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GE( glGetIntegerv (GL_STENCIL_BITS, &num_stencil_bits) );
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/* We need at least three stencil bits to combine clips */
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if (num_stencil_bits > 2)
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flags |= COGL_FEATURE_STENCIL_BUFFER;
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GE( glGetIntegerv (GL_MAX_CLIP_PLANES, &max_clip_planes) );
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if (max_clip_planes >= 4)
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flags |= COGL_FEATURE_FOUR_CLIP_PLANES;
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#ifdef HAVE_COGL_GLES2
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flags |= COGL_FEATURE_SHADERS_GLSL | COGL_FEATURE_OFFSCREEN;
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/* Note GLES 2 core doesn't support mipmaps for npot textures or
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* repeat modes other than CLAMP_TO_EDGE. */
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flags |= COGL_FEATURE_TEXTURE_NPOT_BASIC;
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#endif
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flags |= COGL_FEATURE_VBOS;
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/* Both GLES 1.1 and GLES 2.0 support point sprites in core */
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flags |= COGL_FEATURE_POINT_SPRITE;
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/* Cache features */
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ctx->feature_flags = flags;
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ctx->features_cached = TRUE;
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}
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