mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
417 lines
11 KiB
C++
417 lines
11 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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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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unsigned int mOpenGLVersion;
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unsigned int mOpenGLESVersion;
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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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{
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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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{
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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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{
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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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300, // OpenGL ES version
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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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{
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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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"element_index_uint",
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200, // OpenGL version
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300, // OpenGL ES version
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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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{
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GLContext::ARB_ES2_compatibility,
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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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{
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GLContext::ARB_ES3_compatibility,
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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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{
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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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{
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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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{
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GLContext::ARB_framebuffer_object,
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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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{
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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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{
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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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{
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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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{
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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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{
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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_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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{
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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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{
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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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{
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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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"robustness",
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0, // OpenGL version
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0, // OpenGL ES version
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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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"standard_derivatives",
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200, // OpenGL version
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300, // OpenGL ES version
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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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310, // OpenGL version
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300, // OpenGL ES version
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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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{
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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_non_power_of_two",
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200, // OpenGL version
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300, // OpenGL ES version
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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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{
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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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{
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GLContext::ARB_vertex_array_object,
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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::Enum 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[feature];
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}
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static inline uint32_t
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ProfileVersionForFeature(GLFeature::Enum 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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static inline bool
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IsFeatureIsPartOfProfileVersion(GLFeature::Enum 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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const char*
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GLContext::GetFeatureName(GLFeature::Enum feature)
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{
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return GetFeatureInfo(feature).mName;
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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 i = 0; i < GLFeature::EnumMax; i++)
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{
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GLFeature::Enum feature = GLFeature::Enum(i);
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if (IsFeatureIsPartOfProfileVersion(feature, mProfile, mVersion)) {
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mAvailableFeatures[feature] = true;
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continue;
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}
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mAvailableFeatures[feature] = false;
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const FeatureInfo& featureInfo = GetFeatureInfo(feature);
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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] = true;
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break;
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}
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}
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}
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}
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void
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GLContext::MarkUnsupported(GLFeature::Enum feature)
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{
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mAvailableFeatures[feature] = false;
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const FeatureInfo& featureInfo = GetFeatureInfo(feature);
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for (size_t i = 0; true; i++)
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{
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MOZ_ASSERT(i < kMAX_EXTENSION_GROUP_SIZE, "kMAX_EXTENSION_GROUP_SIZE too small");
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if (featureInfo.mExtensions[i] == GLContext::Extensions_End) {
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break;
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}
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MarkExtensionUnsupported(featureInfo.mExtensions[i]);
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}
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MOZ_ASSERT(!IsSupported(feature), "GLContext::MarkUnsupported has failed!");
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NS_WARNING(nsPrintfCString("%s marked as unsupported", GetFeatureName(feature)).get());
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}
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} /* namespace gl */
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} /* namespace mozilla */
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