mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
607 lines
17 KiB
C++
607 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GLContext.h"
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#include "nsPrintfCString.h"
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#ifdef XP_MACOSX
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#include "nsCocoaFeatures.h"
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#endif
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namespace mozilla {
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namespace gl {
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const size_t kMAX_EXTENSION_GROUP_SIZE = 5;
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// ARB_ES2_compatibility is natively supported in OpenGL 4.1.
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static const unsigned int kGLCoreVersionForES2Compat = 410;
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// ARB_ES3_compatibility is natively supported in OpenGL 4.3.
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static const unsigned int kGLCoreVersionForES3Compat = 430;
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struct FeatureInfo
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{
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const char* mName;
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/* The (desktop) OpenGL version that provides this feature */
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unsigned int mOpenGLVersion;
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/* The OpenGL ES version that provides this feature */
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unsigned int mOpenGLESVersion;
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/* If there is an ARB extension, and its function symbols are
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* not decorated with an ARB suffix, then its extension ID should go
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* here, and NOT in mExtensions. For example, ARB_vertex_array_object
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* functions do not have an ARB suffix, because it is an extension that
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* was created to match core GL functionality and will never differ.
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* Some ARB extensions do have a suffix, if they were created before
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* a core version of the functionality existed.
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*
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* If there is no such ARB extension, pass 0 (GLContext::Extension_None)
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*/
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GLContext::GLExtensions mARBExtensionWithoutARBSuffix;
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/* Extensions that also provide this feature */
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GLContext::GLExtensions mExtensions[kMAX_EXTENSION_GROUP_SIZE];
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};
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static const FeatureInfo sFeatureInfoArr[] = {
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{
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"bind_buffer_offset",
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0, // OpenGL version
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0, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_transform_feedback,
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GLContext::NV_transform_feedback,
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GLContext::Extensions_End
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}
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},
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{
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"blend_minmax",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_blend_minmax,
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GLContext::Extensions_End
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}
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},
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{
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"depth_texture",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_depth_texture,
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GLContext::OES_depth_texture,
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// Intentionally avoid putting ANGLE_depth_texture here,
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// it does not offer quite the same functionality.
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GLContext::Extensions_End
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}
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},
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{
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"draw_buffers",
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200, // OpenGL version
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0, // Only enable when we have the extension on ES, bug 1056947
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GLContext::Extension_None,
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{
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GLContext::ARB_draw_buffers,
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GLContext::EXT_draw_buffers,
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GLContext::Extensions_End
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}
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},
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{
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"draw_instanced",
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310, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_draw_instanced,
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GLContext::EXT_draw_instanced,
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GLContext::NV_draw_instanced,
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GLContext::ANGLE_instanced_arrays,
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GLContext::Extensions_End
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}
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},
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{
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"draw_range_elements",
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120, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_draw_range_elements,
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GLContext::Extensions_End
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}
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},
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{
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"element_index_uint",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::OES_element_index_uint,
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GLContext::Extensions_End
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}
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},
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{
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"ES2_compatibility",
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kGLCoreVersionForES2Compat,
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200, // OpenGL ES version
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GLContext::ARB_ES2_compatibility, // no suffix on ARB extension
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{
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GLContext::Extensions_End
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}
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},
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{
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"ES3_compatibility",
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kGLCoreVersionForES3Compat,
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300, // OpenGL ES version
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GLContext::ARB_ES3_compatibility, // no suffix on ARB extension
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{
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GLContext::Extensions_End
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}
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},
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{
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// Removes clamping for float color outputs from frag shaders.
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"frag_color_float",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_color_buffer_float,
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GLContext::EXT_color_buffer_float,
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GLContext::EXT_color_buffer_half_float,
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GLContext::Extensions_End
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}
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},
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{
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"frag_depth",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_frag_depth,
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GLContext::Extensions_End
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}
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},
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{
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"framebuffer_blit",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_framebuffer_blit,
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GLContext::ANGLE_framebuffer_blit,
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GLContext::Extensions_End
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}
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},
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{
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"framebuffer_multisample",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_framebuffer_multisample,
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GLContext::ANGLE_framebuffer_multisample,
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GLContext::Extensions_End
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}
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},
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{
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"framebuffer_object",
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300, // OpenGL version
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200, // OpenGL ES version
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GLContext::ARB_framebuffer_object,
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{
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GLContext::EXT_framebuffer_object,
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GLContext::Extensions_End
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}
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},
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{
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"get_query_object_iv",
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200, // OpenGL version
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0, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::Extensions_End
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}
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/*
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* XXX_get_query_object_iv only provide GetQueryObjectiv provided by
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* ARB_occlusion_query (added by OpenGL 2.0).
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*/
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},
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{
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"instanced_arrays",
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330, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_instanced_arrays,
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GLContext::NV_instanced_arrays,
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GLContext::ANGLE_instanced_arrays,
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GLContext::Extensions_End
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}
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},
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{
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"instanced_non_arrays",
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330, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_instanced_arrays,
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GLContext::Extensions_End
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}
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/* This is an expanded version of `instanced_arrays` that allows for all
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* enabled active attrib arrays to have non-zero divisors.
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* ANGLE_instanced_arrays and NV_instanced_arrays forbid this, but GLES3
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* has no such restriction.
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*/
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},
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{
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"occlusion_query",
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200, // OpenGL version
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0, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::Extensions_End
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}
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// XXX_occlusion_query depend on ARB_occlusion_query (added in OpenGL 2.0)
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},
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{
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"occlusion_query_boolean",
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kGLCoreVersionForES3Compat,
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300, // OpenGL ES version
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GLContext::ARB_ES3_compatibility,
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{
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GLContext::EXT_occlusion_query_boolean,
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GLContext::Extensions_End
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}
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/*
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* XXX_occlusion_query_boolean provide ANY_SAMPLES_PASSED_CONSERVATIVE,
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* but EXT_occlusion_query_boolean is only a OpenGL ES extension. But
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* it is supported on desktop if ARB_ES3_compatibility because
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* EXT_occlusion_query_boolean (added in OpenGL ES 3.0).
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*/
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},
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{
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"occlusion_query2",
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330, // = min(330, kGLCoreVersionForES3Compat),
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_occlusion_query2,
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GLContext::ARB_ES3_compatibility,
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GLContext::EXT_occlusion_query_boolean,
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GLContext::Extensions_End
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}
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/*
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* XXX_occlusion_query2 (add in OpenGL 3.3) provide ANY_SAMPLES_PASSED,
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* which is provided by ARB_occlusion_query2, EXT_occlusion_query_boolean
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* (added in OpenGL ES 3.0) and ARB_ES3_compatibility
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*/
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},
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{
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"packed_depth_stencil",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_packed_depth_stencil,
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GLContext::OES_packed_depth_stencil,
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GLContext::Extensions_End
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}
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},
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{
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"query_objects",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_occlusion_query_boolean,
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GLContext::Extensions_End
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}
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/*
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* XXX_query_objects only provide entry points commonly supported by
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* ARB_occlusion_query (added in OpenGL 2.0) and EXT_occlusion_query_boolean
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* (added in OpenGL ES 3.0)
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*/
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},
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{
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"renderbuffer_float",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_texture_float,
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GLContext::EXT_color_buffer_float,
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GLContext::Extensions_End
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}
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},
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{
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"renderbuffer_half_float",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_texture_float,
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GLContext::EXT_color_buffer_half_float,
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GLContext::Extensions_End
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}
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},
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{
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"robustness",
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0, // OpenGL version
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0, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_robustness,
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GLContext::EXT_robustness,
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GLContext::Extensions_End
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}
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},
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{
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"sRGB",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_sRGB,
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GLContext::Extensions_End
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}
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},
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{
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"standard_derivatives",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::OES_standard_derivatives,
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GLContext::Extensions_End
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}
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},
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{
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"texture_float",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_texture_float,
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GLContext::OES_texture_float,
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GLContext::Extensions_End
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}
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},
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{
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"texture_float_linear",
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310, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_texture_float,
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GLContext::OES_texture_float_linear,
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GLContext::Extensions_End
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}
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},
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{
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"texture_half_float",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_half_float_pixel,
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GLContext::ARB_texture_float,
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GLContext::NV_half_float,
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GLContext::Extensions_End
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}
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/**
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* We are not including OES_texture_half_float in this feature, because:
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* GL_HALF_FLOAT = 0x140B
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* GL_HALF_FLOAT_ARB = 0x140B == GL_HALF_FLOAT
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* GL_HALF_FLOAT_NV = 0x140B == GL_HALF_FLOAT
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* GL_HALF_FLOAT_OES = 0x8D61 != GL_HALF_FLOAT
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* WebGL handles this specifically with an OES_texture_half_float check.
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*/
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},
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{
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"texture_half_float_linear",
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310, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_half_float_pixel,
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GLContext::ARB_texture_float,
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GLContext::NV_half_float,
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GLContext::OES_texture_half_float_linear,
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GLContext::Extensions_End
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}
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},
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{
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"texture_non_power_of_two",
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200, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::ARB_texture_non_power_of_two,
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GLContext::OES_texture_npot,
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GLContext::Extensions_End
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}
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},
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{
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"transform_feedback",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::Extension_None,
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{
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GLContext::EXT_transform_feedback,
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GLContext::NV_transform_feedback,
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GLContext::Extensions_End
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}
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},
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{
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"vertex_array_object",
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300, // OpenGL version
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300, // OpenGL ES version
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GLContext::ARB_vertex_array_object, // ARB extension
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{
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GLContext::OES_vertex_array_object,
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GLContext::APPLE_vertex_array_object,
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GLContext::Extensions_End
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}
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}
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};
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static inline const FeatureInfo&
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GetFeatureInfo(GLFeature feature)
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{
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static_assert(MOZ_ARRAY_LENGTH(sFeatureInfoArr) == size_t(GLFeature::EnumMax),
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"Mismatched lengths for sFeatureInfoInfos and GLFeature enums");
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MOZ_ASSERT(feature < GLFeature::EnumMax,
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"GLContext::GetFeatureInfoInfo : unknown <feature>");
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return sFeatureInfoArr[size_t(feature)];
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}
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static inline uint32_t
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ProfileVersionForFeature(GLFeature feature, ContextProfile profile)
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{
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MOZ_ASSERT(profile != ContextProfile::Unknown,
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"GLContext::ProfileVersionForFeature : unknown <profile>");
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const FeatureInfo& featureInfo = GetFeatureInfo(feature);
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if (profile == ContextProfile::OpenGLES) {
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return featureInfo.mOpenGLESVersion;
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}
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return featureInfo.mOpenGLVersion;
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}
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bool
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IsFeaturePartOfProfileVersion(GLFeature feature,
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ContextProfile profile, unsigned int version)
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{
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unsigned int profileVersion = ProfileVersionForFeature(feature, profile);
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/**
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* if `profileVersion` is zero, it means that no version of the profile
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* added support for the feature.
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*/
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return profileVersion && version >= profileVersion;
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}
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bool
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GLContext::IsFeatureProvidedByCoreSymbols(GLFeature feature)
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{
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if (IsFeaturePartOfProfileVersion(feature, mProfile, mVersion))
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return true;
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if (IsExtensionSupported(GetFeatureInfo(feature).mARBExtensionWithoutARBSuffix))
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return true;
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return false;
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}
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const char*
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GLContext::GetFeatureName(GLFeature feature)
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{
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return GetFeatureInfo(feature).mName;
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}
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static bool
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CanReadSRGBFromFBOTexture(GLContext* gl)
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{
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if (!gl->WorkAroundDriverBugs())
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return true;
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#ifdef XP_MACOSX
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// Bug 843668:
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// MacOSX 10.6 reports to support EXT_framebuffer_sRGB and
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// EXT_texture_sRGB but fails to convert from sRGB to linear
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// when writing to an sRGB texture attached to an FBO.
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if (!nsCocoaFeatures::OnLionOrLater()) {
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return false;
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}
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#endif // XP_MACOSX
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return true;
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}
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void
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GLContext::InitFeatures()
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{
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for (size_t feature_index = 0; feature_index < size_t(GLFeature::EnumMax); feature_index++)
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{
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GLFeature feature = GLFeature(feature_index);
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if (IsFeaturePartOfProfileVersion(feature, mProfile, mVersion)) {
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mAvailableFeatures[feature_index] = true;
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continue;
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}
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mAvailableFeatures[feature_index] = false;
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const FeatureInfo& featureInfo = GetFeatureInfo(feature);
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if (IsExtensionSupported(featureInfo.mARBExtensionWithoutARBSuffix))
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{
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mAvailableFeatures[feature_index] = true;
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continue;
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}
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for (size_t j = 0; true; j++)
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{
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MOZ_ASSERT(j < kMAX_EXTENSION_GROUP_SIZE, "kMAX_EXTENSION_GROUP_SIZE too small");
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if (featureInfo.mExtensions[j] == GLContext::Extensions_End) {
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break;
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}
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if (IsExtensionSupported(featureInfo.mExtensions[j])) {
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mAvailableFeatures[feature_index] = true;
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break;
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}
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}
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}
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// Bug 843668: Work around limitation of the feature system.
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// For sRGB support under OpenGL to match OpenGL ES spec, check for both
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// EXT_texture_sRGB and EXT_framebuffer_sRGB is required.
|
|
const bool aresRGBExtensionsAvailable =
|
|
IsExtensionSupported(EXT_texture_sRGB) &&
|
|
(IsExtensionSupported(ARB_framebuffer_sRGB) ||
|
|
IsExtensionSupported(EXT_framebuffer_sRGB));
|
|
|
|
mAvailableFeatures[size_t(GLFeature::sRGB)] =
|
|
aresRGBExtensionsAvailable &&
|
|
CanReadSRGBFromFBOTexture(this);
|
|
}
|
|
|
|
void
|
|
GLContext::MarkUnsupported(GLFeature feature)
|
|
{
|
|
mAvailableFeatures[size_t(feature)] = false;
|
|
|
|
const FeatureInfo& featureInfo = GetFeatureInfo(feature);
|
|
|
|
for (size_t i = 0; true; i++)
|
|
{
|
|
MOZ_ASSERT(i < kMAX_EXTENSION_GROUP_SIZE, "kMAX_EXTENSION_GROUP_SIZE too small");
|
|
|
|
if (featureInfo.mExtensions[i] == GLContext::Extensions_End) {
|
|
break;
|
|
}
|
|
|
|
MarkExtensionUnsupported(featureInfo.mExtensions[i]);
|
|
}
|
|
|
|
MOZ_ASSERT(!IsSupported(feature), "GLContext::MarkUnsupported has failed!");
|
|
|
|
NS_WARNING(nsPrintfCString("%s marked as unsupported", GetFeatureName(feature)).get());
|
|
}
|
|
|
|
} /* namespace gl */
|
|
} /* namespace mozilla */
|