mutter/cogl/driver/gles/cogl-gles.c
Robert Bragg eb578e4e0c gles: Or in private features into ctx->private_feature_flags
When we moved all the GL function pointers to be part of CoglContext in
commit dae02a99a5 we made a mistake and started to OR in the private
COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE feature flag into the non
private flags which would mean cogl would think the GL_OES_EGL_image
extension wasn't supported.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-07-19 14:40:29 +01:00

131 lines
4.1 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-context-private.h"
#include "cogl-feature-private.h"
gboolean
_cogl_gles_update_features (CoglContext *context,
GError **error)
{
CoglPrivateFeatureFlags private_flags = 0;
CoglFeatureFlags flags = 0;
const char *gl_extensions;
int num_stencil_bits = 0;
/* We have to special case getting the pointer to the glGetString
function because we need to use it to determine what functions we
can expect */
context->glGetString =
(void *) _cogl_get_proc_address (_cogl_context_get_winsys (context),
"glGetString");
COGL_NOTE (WINSYS,
"Checking features\n"
" GL_VENDOR: %s\n"
" GL_RENDERER: %s\n"
" GL_VERSION: %s\n"
" GL_EXTENSIONS: %s",
context->glGetString (GL_VENDOR),
context->glGetString (GL_RENDERER),
context->glGetString (GL_VERSION),
context->glGetString (GL_EXTENSIONS));
gl_extensions = (const char*) context->glGetString (GL_EXTENSIONS);
_cogl_feature_check_ext_functions (context,
-1 /* GL major version */,
-1 /* GL minor version */,
gl_extensions);
GE( context, glGetIntegerv (GL_STENCIL_BITS, &num_stencil_bits) );
/* We need at least three stencil bits to combine clips */
if (num_stencil_bits > 2)
flags |= COGL_FEATURE_STENCIL_BUFFER;
#ifdef HAVE_COGL_GLES
if (context->driver == COGL_DRIVER_GLES1)
{
int max_clip_planes;
GE( context, glGetIntegerv (GL_MAX_CLIP_PLANES, &max_clip_planes) );
if (max_clip_planes >= 4)
flags |= COGL_FEATURE_FOUR_CLIP_PLANES;
}
#endif
if (context->driver == COGL_DRIVER_GLES2)
{
flags |= COGL_FEATURE_SHADERS_GLSL | COGL_FEATURE_OFFSCREEN;
/* Note GLES 2 core doesn't support mipmaps for npot textures or
* repeat modes other than CLAMP_TO_EDGE. */
flags |= COGL_FEATURE_TEXTURE_NPOT_BASIC;
flags |= COGL_FEATURE_DEPTH_RANGE;
}
flags |= COGL_FEATURE_VBOS;
/* Both GLES 1.1 and GLES 2.0 support point sprites in core */
flags |= COGL_FEATURE_POINT_SPRITE;
if (context->glGenRenderbuffers)
flags |= COGL_FEATURE_OFFSCREEN;
if (context->glBlitFramebuffer)
flags |= COGL_FEATURE_OFFSCREEN_BLIT;
if (_cogl_check_extension ("GL_OES_element_index_uint", gl_extensions))
flags |= COGL_FEATURE_UNSIGNED_INT_INDICES;
if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions) ||
_cogl_check_extension ("GL_IMG_texture_npot", gl_extensions))
flags |= (COGL_FEATURE_TEXTURE_NPOT |
COGL_FEATURE_TEXTURE_NPOT_BASIC |
COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
COGL_FEATURE_TEXTURE_NPOT_REPEAT);
if (context->glTexImage3D)
flags |= COGL_FEATURE_TEXTURE_3D;
if (context->glMapBuffer)
/* The GL_OES_mapbuffer extension doesn't support mapping for
read */
flags |= COGL_FEATURE_MAP_BUFFER_FOR_WRITE;
if (context->glEGLImageTargetTexture2D)
private_flags |= COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE;
/* Cache features */
context->private_feature_flags |= private_flags;
context->feature_flags |= flags;
return TRUE;
}