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mutter/cogl/driver/gl/gles/cogl-driver-gles.c
Neil Roberts c5644723f8 Use COGL_FLAGS_* for the context's private feature flags 
Previously the private feature flags were stored in an enum and we
already had 31 flags. Adding the 32nd flag would presumably make it
add -2³¹ as one of the values which might cause problems. To avoid
this we'll just use an fixed-size array of longs and use indices for
the enum values like we do for the public features.

A slight complication with this is in the CoglDriverDescription where
we were previously using a static intialised value to describe the set
of features that the driver supports. We can't easily do this with the
flags array so instead the features are stored in a fixed-size array
of indices.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit d94cb984e3c93630f3c2e6e3be9d189672aa20f3)

Conflicts:
	cogl/cogl-context-private.h
	cogl/cogl-context.c
	cogl/cogl-private.h
	cogl/cogl-renderer.c
	cogl/driver/gl/cogl-pipeline-opengl.c
	cogl/driver/gl/gl/cogl-driver-gl.c
	cogl/driver/gl/gl/cogl-pipeline-progend-fixed-arbfp.c
	cogl/driver/gl/gles/cogl-driver-gles.c
	cogl/driver/nop/cogl-driver-nop.c
2013-11-28 18:12:22 +00:00

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/*
* 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-context-private.h"
#include "cogl-util-gl-private.h"
#include "cogl-feature-private.h"
#include "cogl-renderer-private.h"
#include "cogl-private.h"
#include "cogl-framebuffer-gl-private.h"
#include "cogl-texture-2d-gl-private.h"
#include "cogl-attribute-gl-private.h"
#include "cogl-clip-stack-gl-private.h"
#include "cogl-buffer-gl-private.h"
#ifndef GL_UNSIGNED_INT_24_8
#define GL_UNSIGNED_INT_24_8 0x84FA
#endif
#ifndef GL_DEPTH_STENCIL
#define GL_DEPTH_STENCIL 0x84F9
#endif
static CoglBool
_cogl_driver_pixel_format_from_gl_internal (CoglContext *context,
GLenum gl_int_format,
CoglPixelFormat *out_format)
{
return TRUE;
}
static CoglPixelFormat
_cogl_driver_pixel_format_to_gl (CoglContext *context,
CoglPixelFormat format,
GLenum *out_glintformat,
GLenum *out_glformat,
GLenum *out_gltype)
{
CoglPixelFormat required_format;
GLenum glintformat;
GLenum glformat = 0;
GLenum gltype;
required_format = format;
/* Find GL equivalents */
switch (format)
{
case COGL_PIXEL_FORMAT_A_8:
glintformat = GL_ALPHA;
glformat = GL_ALPHA;
gltype = GL_UNSIGNED_BYTE;
break;
case COGL_PIXEL_FORMAT_G_8:
glintformat = GL_LUMINANCE;
glformat = GL_LUMINANCE;
gltype = GL_UNSIGNED_BYTE;
break;
case COGL_PIXEL_FORMAT_BGRA_8888:
case COGL_PIXEL_FORMAT_BGRA_8888_PRE:
/* There is an extension to support this format */
if (_cogl_has_private_feature
(context, COGL_PRIVATE_FEATURE_TEXTURE_FORMAT_BGRA8888))
{
/* For some reason the extension says you have to specify
BGRA for the internal format too */
glintformat = GL_BGRA_EXT;
glformat = GL_BGRA_EXT;
gltype = GL_UNSIGNED_BYTE;
required_format = format;
break;
}
/* flow through */
/* Just one 24-bit ordering supported */
case COGL_PIXEL_FORMAT_RGB_888:
case COGL_PIXEL_FORMAT_BGR_888:
glintformat = GL_RGB;
glformat = GL_RGB;
gltype = GL_UNSIGNED_BYTE;
required_format = COGL_PIXEL_FORMAT_RGB_888;
break;
/* Just one 32-bit ordering supported */
case COGL_PIXEL_FORMAT_RGBA_8888:
case COGL_PIXEL_FORMAT_RGBA_8888_PRE:
case COGL_PIXEL_FORMAT_ARGB_8888:
case COGL_PIXEL_FORMAT_ARGB_8888_PRE:
case COGL_PIXEL_FORMAT_ABGR_8888:
case COGL_PIXEL_FORMAT_ABGR_8888_PRE:
case COGL_PIXEL_FORMAT_RGBA_1010102:
case COGL_PIXEL_FORMAT_RGBA_1010102_PRE:
case COGL_PIXEL_FORMAT_BGRA_1010102:
case COGL_PIXEL_FORMAT_BGRA_1010102_PRE:
case COGL_PIXEL_FORMAT_ABGR_2101010:
case COGL_PIXEL_FORMAT_ABGR_2101010_PRE:
case COGL_PIXEL_FORMAT_ARGB_2101010:
case COGL_PIXEL_FORMAT_ARGB_2101010_PRE:
glintformat = GL_RGBA;
glformat = GL_RGBA;
gltype = GL_UNSIGNED_BYTE;
required_format = COGL_PIXEL_FORMAT_RGBA_8888;
required_format |= (format & COGL_PREMULT_BIT);
break;
/* The following three types of channel ordering
* are always defined using system word byte
* ordering (even according to GLES spec) */
case COGL_PIXEL_FORMAT_RGB_565:
glintformat = GL_RGB;
glformat = GL_RGB;
gltype = GL_UNSIGNED_SHORT_5_6_5;
break;
case COGL_PIXEL_FORMAT_RGBA_4444:
case COGL_PIXEL_FORMAT_RGBA_4444_PRE:
glintformat = GL_RGBA;
glformat = GL_RGBA;
gltype = GL_UNSIGNED_SHORT_4_4_4_4;
break;
case COGL_PIXEL_FORMAT_RGBA_5551:
case COGL_PIXEL_FORMAT_RGBA_5551_PRE:
glintformat = GL_RGBA;
glformat = GL_RGBA;
gltype = GL_UNSIGNED_SHORT_5_5_5_1;
break;
case COGL_PIXEL_FORMAT_DEPTH_16:
glintformat = GL_DEPTH_COMPONENT;
glformat = GL_DEPTH_COMPONENT;
gltype = GL_UNSIGNED_SHORT;
break;
case COGL_PIXEL_FORMAT_DEPTH_32:
glintformat = GL_DEPTH_COMPONENT;
glformat = GL_DEPTH_COMPONENT;
gltype = GL_UNSIGNED_INT;
break;
case COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8:
glintformat = GL_DEPTH_STENCIL;
glformat = GL_DEPTH_STENCIL;
gltype = GL_UNSIGNED_INT_24_8;
break;
case COGL_PIXEL_FORMAT_ANY:
case COGL_PIXEL_FORMAT_YUV:
g_assert_not_reached ();
break;
}
/* All of the pixel formats are handled above so if this hits then
we've been given an invalid pixel format */
g_assert (glformat != 0);
if (out_glintformat != NULL)
*out_glintformat = glintformat;
if (out_glformat != NULL)
*out_glformat = glformat;
if (out_gltype != NULL)
*out_gltype = gltype;
return required_format;
}
static CoglBool
_cogl_driver_update_features (CoglContext *context,
CoglError **error)
{
unsigned long private_features
[COGL_FLAGS_N_LONGS_FOR_SIZE (COGL_N_PRIVATE_FEATURES)] = { 0 };
CoglFeatureFlags flags = 0;
char **gl_extensions;
int i;
/* 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_renderer_get_proc_address (context->display->renderer,
"glGetString",
TRUE);
gl_extensions = _cogl_context_get_gl_extensions (context);
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_WINSYS)))
{
char *all_extensions = g_strjoinv (" ", gl_extensions);
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),
_cogl_context_get_gl_version (context),
all_extensions);
g_free (all_extensions);
}
context->glsl_major = 1;
context->glsl_minor = 0;
context->glsl_version_to_use = 100;
_cogl_gpu_info_init (context, &context->gpu);
_cogl_feature_check_ext_functions (context,
-1 /* GL major version */,
-1 /* GL minor version */,
gl_extensions);
#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)
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_FOUR_CLIP_PLANES, TRUE);
}
#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;
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_GLSL, TRUE);
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_OFFSCREEN, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_RANGE, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_MIRRORED_REPEAT, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_PER_VERTEX_POINT_SIZE, TRUE);
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_BLEND_CONSTANT, TRUE);
}
else if (context->driver == COGL_DRIVER_GLES1)
{
COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_GL_FIXED, TRUE);
COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ALPHA_TEST, TRUE);
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_BUILTIN_POINT_SIZE_UNIFORM, TRUE);
}
COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_VBOS, TRUE);
COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ANY_GL, TRUE);
COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ALPHA_TEXTURES, TRUE);
/* Both GLES 1.1 and GLES 2.0 support point sprites in core */
flags |= COGL_FEATURE_POINT_SPRITE;
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_POINT_SPRITE, TRUE);
if (context->glGenRenderbuffers)
{
flags |= COGL_FEATURE_OFFSCREEN;
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_OFFSCREEN, TRUE);
}
if (context->glBlitFramebuffer)
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT, TRUE);
if (_cogl_check_extension ("GL_OES_element_index_uint", gl_extensions))
{
flags |= COGL_FEATURE_UNSIGNED_INT_INDICES;
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_UNSIGNED_INT_INDICES, TRUE);
}
if (_cogl_check_extension ("GL_OES_depth_texture", gl_extensions))
{
flags |= COGL_FEATURE_DEPTH_TEXTURE;
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_TEXTURE, TRUE);
}
if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions))
{
flags |= (COGL_FEATURE_TEXTURE_NPOT |
COGL_FEATURE_TEXTURE_NPOT_BASIC |
COGL_FEATURE_TEXTURE_NPOT_MIPMAP |
COGL_FEATURE_TEXTURE_NPOT_REPEAT);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, TRUE);
}
else if (_cogl_check_extension ("GL_IMG_texture_npot", gl_extensions))
{
flags |= (COGL_FEATURE_TEXTURE_NPOT_BASIC |
COGL_FEATURE_TEXTURE_NPOT_MIPMAP);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE);
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE);
}
if (context->glTexImage3D)
{
flags |= COGL_FEATURE_TEXTURE_3D;
COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_3D, TRUE);
}
if (context->glMapBuffer)
{
/* The GL_OES_mapbuffer extension doesn't support mapping for
read */
flags |= COGL_FEATURE_MAP_BUFFER_FOR_WRITE;
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE, TRUE);
}
if (context->glEGLImageTargetTexture2D)
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE, TRUE);
if (_cogl_check_extension ("GL_OES_packed_depth_stencil", gl_extensions))
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL, TRUE);
if (_cogl_check_extension ("GL_EXT_texture_format_BGRA8888", gl_extensions))
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_TEXTURE_FORMAT_BGRA8888, TRUE);
if (_cogl_check_extension ("GL_EXT_unpack_subimage", gl_extensions))
COGL_FLAGS_SET (private_features,
COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE, TRUE);
/* A nameless vendor implemented the extension, but got the case wrong
* per the spec. */
if (_cogl_check_extension ("GL_OES_EGL_sync", gl_extensions) ||
_cogl_check_extension ("GL_OES_egl_sync", gl_extensions))
COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_OES_EGL_SYNC, TRUE);
/* Cache features */
for (i = 0; i < G_N_ELEMENTS (private_features); i++)
context->private_features[i] |= private_features[i];
context->feature_flags |= flags;
g_strfreev (gl_extensions);
return TRUE;
}
const CoglDriverVtable
_cogl_driver_gles =
{
_cogl_driver_pixel_format_from_gl_internal,
_cogl_driver_pixel_format_to_gl,
_cogl_driver_update_features,
_cogl_offscreen_gl_allocate,
_cogl_offscreen_gl_free,
_cogl_framebuffer_gl_flush_state,
_cogl_framebuffer_gl_clear,
_cogl_framebuffer_gl_query_bits,
_cogl_framebuffer_gl_finish,
_cogl_framebuffer_gl_discard_buffers,
_cogl_framebuffer_gl_draw_attributes,
_cogl_framebuffer_gl_draw_indexed_attributes,
_cogl_framebuffer_gl_read_pixels_into_bitmap,
_cogl_texture_2d_gl_free,
_cogl_texture_2d_gl_can_create,
_cogl_texture_2d_gl_init,
_cogl_texture_2d_gl_allocate,
_cogl_texture_2d_gl_new_from_bitmap,
#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
_cogl_egl_texture_2d_gl_new_from_image,
#endif
_cogl_texture_2d_gl_copy_from_framebuffer,
_cogl_texture_2d_gl_get_gl_handle,
_cogl_texture_2d_gl_generate_mipmap,
_cogl_texture_2d_gl_copy_from_bitmap,
NULL, /* texture_2d_get_data */
_cogl_gl_flush_attributes_state,
_cogl_clip_stack_gl_flush,
_cogl_buffer_gl_create,
_cogl_buffer_gl_destroy,
_cogl_buffer_gl_map_range,
_cogl_buffer_gl_unmap,
_cogl_buffer_gl_set_data,
};
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