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https://github.com/mozilla/gecko-dev.git
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b09ba3de12
It was pointed out in a review by jgilbert that glMapBuffer only supports writing to the mapped range on an OpenGL ES profile and using it to read is undefined behaviour. We now use glMapBufferRange when available, which does support reading on both OpenGL and OpenGL ES profiles, and allows capturing screenshots on Android. When it is not available, we fall back to glMapBuffer (e.g., for macOS). Differential Revision: https://phabricator.services.mozilla.com/D12341 --HG-- extra : moz-landing-system : lando
943 lines
25 KiB
C++
943 lines
25 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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enum class GLVersion : uint32_t {
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NONE = 0, // Feature is not supported natively by GL
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GL1_2 = 120,
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GL1_3 = 130,
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GL2 = 200,
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GL2_1 = 210,
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GL3 = 300,
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GL3_1 = 310,
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GL3_2 = 320,
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GL3_3 = 330,
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GL4 = 400,
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GL4_1 = 410,
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GL4_2 = 420,
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GL4_3 = 430,
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};
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enum class GLESVersion : uint32_t {
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NONE = 0, // Feature is not support natively by GL ES
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ES2 = 200,
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ES3 = 300,
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ES3_1 = 310,
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ES3_2 = 320,
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};
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// ARB_ES2_compatibility is natively supported in OpenGL 4.1.
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static const GLVersion kGLCoreVersionForES2Compat = GLVersion::GL4_1;
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// ARB_ES3_compatibility is natively supported in OpenGL 4.3.
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static const GLVersion kGLCoreVersionForES3Compat = GLVersion::GL4_3;
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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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GLVersion mOpenGLVersion;
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/* The OpenGL ES version that provides this feature */
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GLESVersion 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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GLVersion::NONE,
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GLESVersion::NONE,
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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_feedback2,
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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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GLVersion::GL2,
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GLESVersion::ES3,
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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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"clear_buffers",
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GLVersion::GL3,
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GLESVersion::ES3,
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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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{
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"copy_buffer",
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GLVersion::GL3_1,
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GLESVersion::ES3,
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GLContext::ARB_copy_buffer,
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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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"depth_texture",
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GLVersion::GL2,
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GLESVersion::ES3,
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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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GLVersion::GL2,
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GLESVersion::ES3,
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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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GLVersion::GL3_1,
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GLESVersion::ES3,
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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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GLVersion::GL1_2,
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GLESVersion::ES3,
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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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GLVersion::GL2,
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GLESVersion::ES3,
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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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GLESVersion::ES2, // 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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GLESVersion::ES3, // 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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"EXT_color_buffer_float",
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GLVersion::GL3,
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GLESVersion::ES3_2,
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GLContext::Extension_None,
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{
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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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// Removes clamping for float color outputs from frag shaders.
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"frag_color_float",
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GLVersion::GL3,
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GLESVersion::ES3,
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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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GLVersion::GL2,
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GLESVersion::ES3,
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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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// Check for just the blit framebuffer blit part of
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// ARB_framebuffer_object
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"framebuffer_blit",
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GLVersion::GL3,
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GLESVersion::ES3,
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GLContext::ARB_framebuffer_object,
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{
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GLContext::ANGLE_framebuffer_blit,
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GLContext::EXT_framebuffer_blit,
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GLContext::NV_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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// Check for just the multisample renderbuffer part of
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// ARB_framebuffer_object
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"framebuffer_multisample",
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GLVersion::GL3,
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GLESVersion::ES3,
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GLContext::ARB_framebuffer_object,
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{
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GLContext::ANGLE_framebuffer_multisample,
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GLContext::APPLE_framebuffer_multisample,
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GLContext::EXT_framebuffer_multisample,
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GLContext::EXT_multisampled_render_to_texture,
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GLContext::Extensions_End
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}
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},
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{
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// ARB_framebuffer_object support
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"framebuffer_object",
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GLVersion::GL3,
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GLESVersion::ES3,
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GLContext::ARB_framebuffer_object,
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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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// EXT_framebuffer_object/OES_framebuffer_object support
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"framebuffer_object_EXT_OES",
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GLVersion::GL3,
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GLESVersion::ES2,
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GLContext::Extension_None,
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{
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GLContext::EXT_framebuffer_object,
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GLContext::OES_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_integer_indexed",
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GLVersion::GL3,
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GLESVersion::ES3,
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GLContext::Extension_None,
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{
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GLContext::EXT_draw_buffers2,
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GLContext::Extensions_End
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}
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},
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{
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"get_integer64_indexed",
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GLVersion::GL3_2,
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GLESVersion::ES3,
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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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{
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"get_query_object_i64v",
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GLVersion::GL3_3,
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GLESVersion::NONE,
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GLContext::ARB_timer_query,
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{
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GLContext::ANGLE_timer_query,
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GLContext::EXT_disjoint_timer_query,
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GLContext::EXT_timer_query,
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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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GLVersion::GL2,
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GLESVersion::NONE,
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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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"gpu_shader4",
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GLVersion::GL3,
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GLESVersion::ES3,
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GLContext::Extension_None,
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{
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GLContext::EXT_gpu_shader4,
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GLContext::Extensions_End
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}
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},
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{
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"instanced_arrays",
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GLVersion::GL3_3,
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GLESVersion::ES3,
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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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GLVersion::GL3_3,
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GLESVersion::ES3,
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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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"internalformat_query",
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GLVersion::GL4_2,
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GLESVersion::ES3,
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GLContext::ARB_internalformat_query,
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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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"invalidate_framebuffer",
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GLVersion::GL4_3,
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GLESVersion::ES3,
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GLContext::ARB_invalidate_subdata,
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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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"map_buffer_range",
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GLVersion::GL3,
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GLESVersion::ES3,
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GLContext::ARB_map_buffer_range,
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{
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GLContext::EXT_map_buffer_range,
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GLContext::Extensions_End
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}
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},
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{
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"occlusion_query",
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GLVersion::GL2,
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GLESVersion::NONE,
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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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GLESVersion::ES3,
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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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GLVersion::GL3_3,
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GLESVersion::ES3,
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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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GLVersion::GL3,
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GLESVersion::ES3,
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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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"prim_restart",
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GLVersion::GL3_1,
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GLESVersion::NONE,
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GLContext::Extension_None,
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{
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//GLContext::NV_primitive_restart, // Has different enum values.
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GLContext::Extensions_End
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}
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},
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{
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"prim_restart_fixed",
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kGLCoreVersionForES3Compat,
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GLESVersion::ES3,
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GLContext::ARB_ES3_compatibility,
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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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"query_counter",
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GLVersion::GL3_3,
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GLESVersion::NONE,
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GLContext::ARB_timer_query,
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{
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GLContext::ANGLE_timer_query,
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GLContext::EXT_disjoint_timer_query,
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// EXT_timer_query does NOT support GL_TIMESTAMP retrieval with
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// QueryCounter.
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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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GLVersion::GL2,
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GLESVersion::ES3,
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GLContext::Extension_None,
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{
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GLContext::ANGLE_timer_query,
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GLContext::EXT_disjoint_timer_query,
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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), EXT_occlusion_query_boolean
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* (added in OpenGL ES 3.0), and ARB_timer_query (added in OpenGL 3.3)
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*/
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|
},
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|
{
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|
"query_time_elapsed",
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GLVersion::GL3_3,
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GLESVersion::NONE,
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GLContext::ARB_timer_query,
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|
{
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|
GLContext::ANGLE_timer_query,
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|
GLContext::EXT_disjoint_timer_query,
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GLContext::EXT_timer_query,
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|
GLContext::Extensions_End
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|
}
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|
},
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|
{
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|
"read_buffer",
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GLVersion::GL2,
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|
GLESVersion::ES3,
|
|
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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|
{
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|
"renderbuffer_color_float",
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GLVersion::GL3,
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GLESVersion::ES3_2,
|
|
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_color_half_float",
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GLVersion::GL3,
|
|
GLESVersion::ES3_2,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_float,
|
|
GLContext::EXT_color_buffer_float,
|
|
GLContext::EXT_color_buffer_half_float,
|
|
GLContext::Extensions_End
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|
}
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|
},
|
|
{
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|
"robust_buffer_access_behavior",
|
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GLVersion::NONE,
|
|
GLESVersion::NONE,
|
|
GLContext::Extension_None,
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|
{
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|
GLContext::ARB_robust_buffer_access_behavior,
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GLContext::KHR_robust_buffer_access_behavior,
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GLContext::Extensions_End
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|
}
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},
|
|
{
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"robustness",
|
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GLVersion::NONE,
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|
GLESVersion::NONE,
|
|
GLContext::Extension_None,
|
|
{
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|
GLContext::ARB_robustness,
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|
GLContext::EXT_robustness,
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|
GLContext::KHR_robustness,
|
|
GLContext::Extensions_End
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|
}
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|
},
|
|
{
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"sRGB",
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GLVersion::GL3,
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GLESVersion::ES3,
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|
GLContext::ARB_framebuffer_sRGB,
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|
{
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|
GLContext::EXT_sRGB,
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|
GLContext::EXT_framebuffer_sRGB,
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|
GLContext::Extensions_End
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|
}
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|
},
|
|
{
|
|
"sampler_objects",
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GLVersion::GL3_3,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_sampler_objects,
|
|
{
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"seamless_cube_map_opt_in",
|
|
GLVersion::GL3_2,
|
|
GLESVersion::NONE,
|
|
GLContext::ARB_seamless_cube_map,
|
|
{
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"shader_texture_lod",
|
|
GLVersion::GL3,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_shader_texture_lod,
|
|
GLContext::EXT_shader_texture_lod,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
// Do we have separate DRAW and READ framebuffer bind points?
|
|
"split_framebuffer",
|
|
GLVersion::GL3,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_framebuffer_object,
|
|
{
|
|
GLContext::ANGLE_framebuffer_blit,
|
|
GLContext::APPLE_framebuffer_multisample,
|
|
GLContext::EXT_framebuffer_blit,
|
|
GLContext::NV_framebuffer_blit,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"standard_derivatives",
|
|
GLVersion::GL2,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::OES_standard_derivatives,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"sync",
|
|
GLVersion::GL3_2,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_sync,
|
|
GLContext::APPLE_sync,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_3D",
|
|
GLVersion::GL1_2,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::EXT_texture3D,
|
|
GLContext::OES_texture_3D,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_3D_compressed",
|
|
GLVersion::GL1_3,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_compression,
|
|
GLContext::OES_texture_3D,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_3D_copy",
|
|
GLVersion::GL1_2,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::EXT_copy_texture,
|
|
GLContext::OES_texture_3D,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_compression_bptc",
|
|
GLVersion::GL4_2,
|
|
GLESVersion::NONE,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_compression_bptc,
|
|
GLContext::EXT_texture_compression_bptc,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_compression_rgtc",
|
|
GLVersion::GL3,
|
|
GLESVersion::NONE,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_compression_rgtc,
|
|
GLContext::EXT_texture_compression_rgtc,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_float",
|
|
GLVersion::GL3,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_float,
|
|
GLContext::OES_texture_float,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_float_linear",
|
|
GLVersion::GL3_1,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_float,
|
|
GLContext::OES_texture_float_linear,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_half_float",
|
|
GLVersion::GL3,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_half_float_pixel,
|
|
GLContext::ARB_texture_float,
|
|
GLContext::NV_half_float,
|
|
GLContext::Extensions_End
|
|
}
|
|
/**
|
|
* We are not including OES_texture_half_float in this feature, because:
|
|
* GL_HALF_FLOAT = 0x140B
|
|
* GL_HALF_FLOAT_ARB = 0x140B == GL_HALF_FLOAT
|
|
* GL_HALF_FLOAT_NV = 0x140B == GL_HALF_FLOAT
|
|
* GL_HALF_FLOAT_OES = 0x8D61 != GL_HALF_FLOAT
|
|
* WebGL handles this specifically with an OES_texture_half_float check.
|
|
*/
|
|
},
|
|
{
|
|
"texture_half_float_linear",
|
|
GLVersion::GL3_1,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_half_float_pixel,
|
|
GLContext::ARB_texture_float,
|
|
GLContext::NV_half_float,
|
|
GLContext::OES_texture_half_float_linear,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_non_power_of_two",
|
|
GLVersion::GL2,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::ARB_texture_non_power_of_two,
|
|
GLContext::OES_texture_npot,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_rg",
|
|
GLVersion::GL3,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_texture_rg,
|
|
{
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_storage",
|
|
GLVersion::GL4_2,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_texture_storage,
|
|
{
|
|
/*
|
|
* Not including GL_EXT_texture_storage here because it
|
|
* doesn't guarantee glTexStorage3D, which is required for
|
|
* WebGL 2.
|
|
*/
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"texture_swizzle",
|
|
GLVersion::GL3_3,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_texture_swizzle,
|
|
{
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"transform_feedback2",
|
|
GLVersion::GL4,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_transform_feedback2,
|
|
{
|
|
GLContext::NV_transform_feedback2,
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"uniform_buffer_object",
|
|
GLVersion::GL3_1,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_uniform_buffer_object,
|
|
{
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"uniform_matrix_nonsquare",
|
|
GLVersion::GL2_1,
|
|
GLESVersion::ES3,
|
|
GLContext::Extension_None,
|
|
{
|
|
GLContext::Extensions_End
|
|
}
|
|
},
|
|
{
|
|
"vertex_array_object",
|
|
GLVersion::GL3,
|
|
GLESVersion::ES3,
|
|
GLContext::ARB_vertex_array_object, // ARB extension
|
|
{
|
|
GLContext::OES_vertex_array_object,
|
|
GLContext::APPLE_vertex_array_object,
|
|
GLContext::Extensions_End
|
|
}
|
|
}
|
|
};
|
|
|
|
static inline const FeatureInfo&
|
|
GetFeatureInfo(GLFeature feature)
|
|
{
|
|
static_assert(MOZ_ARRAY_LENGTH(sFeatureInfoArr) == size_t(GLFeature::EnumMax),
|
|
"Mismatched lengths for sFeatureInfoInfos and GLFeature enums");
|
|
|
|
MOZ_ASSERT(feature < GLFeature::EnumMax,
|
|
"GLContext::GetFeatureInfoInfo : unknown <feature>");
|
|
|
|
return sFeatureInfoArr[size_t(feature)];
|
|
}
|
|
|
|
static inline uint32_t
|
|
ProfileVersionForFeature(GLFeature feature, ContextProfile profile)
|
|
{
|
|
MOZ_ASSERT(profile != ContextProfile::Unknown,
|
|
"GLContext::ProfileVersionForFeature : unknown <profile>");
|
|
|
|
const FeatureInfo& featureInfo = GetFeatureInfo(feature);
|
|
|
|
if (profile == ContextProfile::OpenGLES)
|
|
return (uint32_t)featureInfo.mOpenGLESVersion;
|
|
|
|
return (uint32_t)featureInfo.mOpenGLVersion;
|
|
}
|
|
|
|
bool
|
|
IsFeaturePartOfProfileVersion(GLFeature feature,
|
|
ContextProfile profile, unsigned int version)
|
|
{
|
|
unsigned int profileVersion = ProfileVersionForFeature(feature, profile);
|
|
|
|
/**
|
|
* if `profileVersion` is zero, it means that no version of the profile
|
|
* added support for the feature.
|
|
*/
|
|
return profileVersion && version >= profileVersion;
|
|
}
|
|
|
|
bool
|
|
GLContext::IsFeatureProvidedByCoreSymbols(GLFeature feature)
|
|
{
|
|
if (IsFeaturePartOfProfileVersion(feature, mProfile, mVersion))
|
|
return true;
|
|
|
|
if (IsExtensionSupported(GetFeatureInfo(feature).mARBExtensionWithoutARBSuffix))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
const char*
|
|
GLContext::GetFeatureName(GLFeature feature)
|
|
{
|
|
return GetFeatureInfo(feature).mName;
|
|
}
|
|
|
|
void
|
|
GLContext::InitFeatures()
|
|
{
|
|
for (size_t featureId = 0; featureId < size_t(GLFeature::EnumMax); featureId++) {
|
|
GLFeature feature = GLFeature(featureId);
|
|
|
|
if (IsFeaturePartOfProfileVersion(feature, mProfile, mVersion)) {
|
|
mAvailableFeatures[featureId] = true;
|
|
continue;
|
|
}
|
|
|
|
mAvailableFeatures[featureId] = false;
|
|
|
|
const FeatureInfo& featureInfo = GetFeatureInfo(feature);
|
|
|
|
if (IsExtensionSupported(featureInfo.mARBExtensionWithoutARBSuffix)) {
|
|
mAvailableFeatures[featureId] = true;
|
|
continue;
|
|
}
|
|
|
|
for (size_t j = 0; true; j++) {
|
|
MOZ_ASSERT(j < kMAX_EXTENSION_GROUP_SIZE,
|
|
"kMAX_EXTENSION_GROUP_SIZE too small");
|
|
|
|
if (featureInfo.mExtensions[j] == GLContext::Extensions_End)
|
|
break;
|
|
|
|
if (IsExtensionSupported(featureInfo.mExtensions[j])) {
|
|
mAvailableFeatures[featureId] = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ShouldDumpExts()) {
|
|
for (size_t featureId = 0; featureId < size_t(GLFeature::EnumMax); featureId++) {
|
|
GLFeature feature = GLFeature(featureId);
|
|
printf_stderr("[%s] Feature::%s\n",
|
|
IsSupported(feature) ? "enabled" : "disabled",
|
|
GetFeatureName(feature));
|
|
}
|
|
}
|
|
}
|
|
|
|
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 */
|