3 * Copyright 2011 Google Inc.
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
8 #ifndef GrGLConfig_chrome_DEFINED
9 #define GrGLConfig_chrome_DEFINED
11 // glGetError() forces a sync with gpu process on chrome
12 #define GR_GL_CHECK_ERROR_START 0
14 #if defined(SK_BUILD_FOR_WIN32)
15 // For RGBA teximage/readpixels ANGLE will sw-convert to/from BGRA.
16 #define GR_GL_RGBA_8888_PIXEL_OPS_SLOW 1
18 // ANGLE can go faster if the entire fbo is read rather than a subrect
19 #define GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL 1
21 #define GR_GL_RGBA_8888_PIXEL_OPS_SLOW 0
22 #define GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL 0
25 // cmd buffer allocates memory and memsets it to zero when it sees glBufferData
27 #define GR_GL_USE_BUFFER_DATA_NULL_HINT 0
29 // chrome uses this to set the context on each GL call.
30 #define GR_GL_PER_GL_FUNC_CALLBACK 1
32 // Check error is even more expensive in chrome (cmd buffer flush). The
33 // compositor also doesn't check its allocations.
34 #define GR_GL_CHECK_ALLOC_WITH_GET_ERROR 0
36 // CheckFramebufferStatus in chrome synchronizes the gpu and renderer processes.
37 #define GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT 1
39 // Non-VBO vertices and indices are not allowed in Chromium.
40 #define GR_GL_MUST_USE_VBO 1
42 // Use updated Khronos signature for glShaderSource
43 // (const char* const instead of char**).
44 #define GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE 1
46 #if !defined(GR_GL_IGNORE_ES3_MSAA)
47 #define GR_GL_IGNORE_ES3_MSAA 1