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			1022 lines
		
	
	
	
		
			31 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			1022 lines
		
	
	
	
		
			31 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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| 
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| #include "WebGLExtensions.h"
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| 
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| #include "GLContext.h"
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| #include "mozilla/dom/WebGLRenderingContextBinding.h"
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| #include "mozilla/StaticPrefs_webgl.h"
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| #include "WebGLContext.h"
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| 
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| namespace mozilla {
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| 
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| WebGLExtensionBlendMinMax::WebGLExtensionBlendMinMax(WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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| }
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| 
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| bool WebGLExtensionBlendMinMax::IsSupported(const WebGLContext* webgl) {
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|   if (webgl->IsWebGL2()) return false;
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| 
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|   return webgl->GL()->IsSupported(gl::GLFeature::blend_minmax);
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| }
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| 
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| // -
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| 
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| WebGLExtensionColorBufferFloat::WebGLExtensionColorBufferFloat(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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|   SetRenderable(webgl::FormatRenderableState::Implicit(
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|       WebGLExtensionID::WEBGL_color_buffer_float));
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| }
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| 
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| void WebGLExtensionColorBufferFloat::SetRenderable(
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|     const webgl::FormatRenderableState state) {
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|   auto& fua = mContext->mFormatUsage;
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| 
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|   auto fnUpdateUsage = [&](GLenum sizedFormat,
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|                            webgl::EffectiveFormat effFormat) {
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->SetRenderable(state);
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|     fua->AllowRBFormat(sizedFormat, usage);
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|   };
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| 
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| #define FOO(x) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x)
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| 
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|   // The extension doesn't actually add RGB32F; only RGBA32F.
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|   FOO(RGBA32F);
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| 
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| #undef FOO
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| }
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| 
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| void WebGLExtensionColorBufferFloat::OnSetExplicit() {
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|   SetRenderable(webgl::FormatRenderableState::Explicit());
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| }
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| 
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| bool WebGLExtensionColorBufferFloat::IsSupported(const WebGLContext* webgl) {
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|   if (webgl->IsWebGL2()) return false;
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| 
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|   const auto& gl = webgl->gl;
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|   return gl->IsSupported(gl::GLFeature::renderbuffer_color_float) &&
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|          gl->IsSupported(gl::GLFeature::frag_color_float);
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| }
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| 
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| // -
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| 
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| WebGLExtensionColorBufferHalfFloat::WebGLExtensionColorBufferHalfFloat(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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|   SetRenderable(webgl::FormatRenderableState::Implicit(
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|       WebGLExtensionID::EXT_color_buffer_half_float));
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| }
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| 
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| void WebGLExtensionColorBufferHalfFloat::SetRenderable(
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|     const webgl::FormatRenderableState state) {
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|   auto& fua = mContext->mFormatUsage;
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| 
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|   auto fnUpdateUsage = [&](GLenum sizedFormat, webgl::EffectiveFormat effFormat,
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|                            const bool renderable) {
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|     auto usage = fua->EditUsage(effFormat);
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|     if (renderable) {
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|       usage->SetRenderable(state);
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|     }
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|     fua->AllowRBFormat(sizedFormat, usage, renderable);
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|   };
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| 
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| #define FOO(x, y) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x, y)
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| 
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|   FOO(RGBA16F, true);
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|   FOO(RGB16F, false);  // It's not required, thus not portable. (Also there's a
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|                        // wicked driver bug on Mac+Intel)
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| 
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| #undef FOO
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| }
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| 
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| void WebGLExtensionColorBufferHalfFloat::OnSetExplicit() {
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|   SetRenderable(webgl::FormatRenderableState::Explicit());
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| }
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| 
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| bool WebGLExtensionColorBufferHalfFloat::IsSupported(
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|     const WebGLContext* webgl) {
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|   if (webgl->IsWebGL2()) return false;
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| 
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|   const auto& gl = webgl->gl;
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|   return gl->IsSupported(gl::GLFeature::renderbuffer_color_half_float) &&
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|          gl->IsSupported(gl::GLFeature::frag_color_float);
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTextureASTC::WebGLExtensionCompressedTextureASTC(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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| 
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|   RefPtr<WebGLContext> webgl_ = webgl;  // Bug 1201275
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|   const auto fnAdd = [&webgl_](GLenum sizedFormat,
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|                                webgl::EffectiveFormat effFormat) {
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|     auto& fua = webgl_->mFormatUsage;
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| 
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
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| 
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_4x4_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_5x4_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_5x5_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_6x5_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_6x6_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x5_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x6_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x8_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x5_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x6_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x8_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x10_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_12x10_KHR));
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|   fnAdd(FOO(COMPRESSED_RGBA_ASTC_12x12_KHR));
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| 
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR));
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| 
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| #undef FOO
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| }
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| 
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| bool WebGLExtensionCompressedTextureASTC::IsSupported(
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|     const WebGLContext* webgl) {
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|   gl::GLContext* gl = webgl->GL();
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|   return gl->IsExtensionSupported(
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|       gl::GLContext::KHR_texture_compression_astc_ldr);
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTextureBPTC::WebGLExtensionCompressedTextureBPTC(
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|     WebGLContext* const webgl)
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|     : WebGLExtensionBase(webgl) {
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|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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| 
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|   auto& fua = webgl->mFormatUsage;
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| 
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|   const auto fnAdd = [&](const GLenum sizedFormat,
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|                          const webgl::EffectiveFormat effFormat) {
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define _(X) LOCAL_GL_##X, webgl::EffectiveFormat::X
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| 
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|   fnAdd(_(COMPRESSED_RGBA_BPTC_UNORM));
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|   fnAdd(_(COMPRESSED_SRGB_ALPHA_BPTC_UNORM));
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|   fnAdd(_(COMPRESSED_RGB_BPTC_SIGNED_FLOAT));
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|   fnAdd(_(COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT));
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| 
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| #undef _
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| }
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| 
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| bool WebGLExtensionCompressedTextureBPTC::IsSupported(
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|     const WebGLContext* const webgl) {
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|   return webgl->gl->IsSupported(gl::GLFeature::texture_compression_bptc);
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTextureES3::WebGLExtensionCompressedTextureES3(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   // GLES 3.0.4, p147, table 3.19
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|   // GLES 3.0.4, p286+, $C.1 "ETC Compressed Texture Image Formats"
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|   // Note that all compressed texture formats are filterable:
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|   // GLES 3.0.4 p161:
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|   // "[A] texture is complete unless any of the following conditions hold true:
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|   //  [...]
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|   //  * The effective internal format specified for the texture arrays is a
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|   //    sized internal color format that is not texture-filterable (see table
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|   //    3.13) and [the mag filter requires filtering]."
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|   // Compressed formats are not sized internal color formats, and indeed they
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|   // are not listed in table 3.13.
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| 
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|   RefPtr<WebGLContext> webgl_ = webgl;  // Bug 1201275
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|   const auto fnAdd = [&webgl_](GLenum sizedFormat,
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|                                webgl::EffectiveFormat effFormat) {
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|     auto& fua = webgl_->mFormatUsage;
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| 
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
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| 
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|   fnAdd(FOO(COMPRESSED_R11_EAC));
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|   fnAdd(FOO(COMPRESSED_SIGNED_R11_EAC));
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|   fnAdd(FOO(COMPRESSED_RG11_EAC));
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|   fnAdd(FOO(COMPRESSED_SIGNED_RG11_EAC));
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|   fnAdd(FOO(COMPRESSED_RGB8_ETC2));
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|   fnAdd(FOO(COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2));
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|   fnAdd(FOO(COMPRESSED_RGBA8_ETC2_EAC));
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| 
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|   // sRGB support is manadatory in GL 4.3 and GL ES 3.0, which are the only
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|   // versions to support ETC2.
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|   fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ETC2_EAC));
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|   fnAdd(FOO(COMPRESSED_SRGB8_ETC2));
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|   fnAdd(FOO(COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2));
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| 
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| #undef FOO
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTextureETC1::WebGLExtensionCompressedTextureETC1(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   RefPtr<WebGLContext> webgl_ = webgl;  // Bug 1201275
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|   const auto fnAdd = [&webgl_](GLenum sizedFormat,
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|                                webgl::EffectiveFormat effFormat) {
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|     auto& fua = webgl_->mFormatUsage;
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| 
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
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| 
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|   fnAdd(FOO(ETC1_RGB8_OES));
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| 
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| #undef FOO
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTexturePVRTC::WebGLExtensionCompressedTexturePVRTC(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   RefPtr<WebGLContext> webgl_ = webgl;  // Bug 1201275
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|   const auto fnAdd = [&webgl_](GLenum sizedFormat,
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|                                webgl::EffectiveFormat effFormat) {
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|     auto& fua = webgl_->mFormatUsage;
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| 
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
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| 
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|   fnAdd(FOO(COMPRESSED_RGB_PVRTC_4BPPV1));
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|   fnAdd(FOO(COMPRESSED_RGB_PVRTC_2BPPV1));
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|   fnAdd(FOO(COMPRESSED_RGBA_PVRTC_4BPPV1));
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|   fnAdd(FOO(COMPRESSED_RGBA_PVRTC_2BPPV1));
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| 
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| #undef FOO
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTextureRGTC::WebGLExtensionCompressedTextureRGTC(
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|     WebGLContext* const webgl)
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|     : WebGLExtensionBase(webgl) {
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|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
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| 
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|   auto& fua = webgl->mFormatUsage;
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| 
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|   const auto fnAdd = [&](const GLenum sizedFormat,
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|                          const webgl::EffectiveFormat effFormat) {
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define _(X) LOCAL_GL_##X, webgl::EffectiveFormat::X
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| 
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|   fnAdd(_(COMPRESSED_RED_RGTC1));
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|   fnAdd(_(COMPRESSED_SIGNED_RED_RGTC1));
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|   fnAdd(_(COMPRESSED_RG_RGTC2));
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|   fnAdd(_(COMPRESSED_SIGNED_RG_RGTC2));
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| 
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| #undef _
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| }
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| 
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| bool WebGLExtensionCompressedTextureRGTC::IsSupported(
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|     const WebGLContext* const webgl) {
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|   return webgl->gl->IsSupported(gl::GLFeature::texture_compression_rgtc);
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| }
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| 
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| // -
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| 
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| WebGLExtensionCompressedTextureS3TC::WebGLExtensionCompressedTextureS3TC(
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|     WebGLContext* webgl)
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|     : WebGLExtensionBase(webgl) {
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|   RefPtr<WebGLContext> webgl_ = webgl;  // Bug 1201275
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|   const auto fnAdd = [&webgl_](GLenum sizedFormat,
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|                                webgl::EffectiveFormat effFormat) {
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|     auto& fua = webgl_->mFormatUsage;
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| 
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|     auto usage = fua->EditUsage(effFormat);
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|     usage->isFilterable = true;
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|     fua->AllowSizedTexFormat(sizedFormat, usage);
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|   };
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| 
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| #define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
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| 
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|   fnAdd(FOO(COMPRESSED_RGB_S3TC_DXT1_EXT));
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|   fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT1_EXT));
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|   fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT3_EXT));
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|   fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT5_EXT));
 | |
| 
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| #undef FOO
 | |
| }
 | |
| 
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| bool WebGLExtensionCompressedTextureS3TC::IsSupported(
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|     const WebGLContext* webgl) {
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|   gl::GLContext* gl = webgl->GL();
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|   if (gl->IsExtensionSupported(gl::GLContext::EXT_texture_compression_s3tc))
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|     return true;
 | |
| 
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|   return gl->IsExtensionSupported(
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|              gl::GLContext::EXT_texture_compression_dxt1) &&
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|          gl->IsExtensionSupported(
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|              gl::GLContext::ANGLE_texture_compression_dxt3) &&
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|          gl->IsExtensionSupported(
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|              gl::GLContext::ANGLE_texture_compression_dxt5);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionCompressedTextureS3TC_SRGB::
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|     WebGLExtensionCompressedTextureS3TC_SRGB(WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   RefPtr<WebGLContext> webgl_ = webgl;  // Bug 1201275
 | |
|   const auto fnAdd = [&webgl_](GLenum sizedFormat,
 | |
|                                webgl::EffectiveFormat effFormat) {
 | |
|     auto& fua = webgl_->mFormatUsage;
 | |
| 
 | |
|     auto usage = fua->EditUsage(effFormat);
 | |
|     usage->isFilterable = true;
 | |
|     fua->AllowSizedTexFormat(sizedFormat, usage);
 | |
|   };
 | |
| 
 | |
| #define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
 | |
| 
 | |
|   fnAdd(FOO(COMPRESSED_SRGB_S3TC_DXT1_EXT));
 | |
|   fnAdd(FOO(COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT));
 | |
|   fnAdd(FOO(COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT));
 | |
|   fnAdd(FOO(COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT));
 | |
| 
 | |
| #undef FOO
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionCompressedTextureS3TC_SRGB::IsSupported(
 | |
|     const WebGLContext* webgl) {
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (gl->IsGLES())
 | |
|     return gl->IsExtensionSupported(
 | |
|         gl::GLContext::EXT_texture_compression_s3tc_srgb);
 | |
| 
 | |
|   // Desktop GL is more complicated: It's EXT_texture_sRGB, when
 | |
|   // EXT_texture_compression_s3tc is supported, that enables srgb+s3tc.
 | |
|   return gl->IsExtensionSupported(gl::GLContext::EXT_texture_sRGB) &&
 | |
|          gl->IsExtensionSupported(gl::GLContext::EXT_texture_compression_s3tc);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionDepthTexture::WebGLExtensionDepthTexture(
 | |
|     WebGLContext* const webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
| 
 | |
|   const auto fnAdd = [&fua](webgl::EffectiveFormat effFormat,
 | |
|                             GLenum unpackFormat, GLenum unpackType) {
 | |
|     auto usage = fua->EditUsage(effFormat);
 | |
|     MOZ_ASSERT(usage->isFilterable);
 | |
|     MOZ_ASSERT(usage->IsRenderable());
 | |
| 
 | |
|     const webgl::PackingInfo pi = {unpackFormat, unpackType};
 | |
|     const webgl::DriverUnpackInfo dui = {unpackFormat, unpackFormat,
 | |
|                                          unpackType};
 | |
|     fua->AddTexUnpack(usage, pi, dui);
 | |
|     fua->AllowUnsizedTexFormat(pi, usage);
 | |
|   };
 | |
| 
 | |
|   fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT16, LOCAL_GL_DEPTH_COMPONENT,
 | |
|         LOCAL_GL_UNSIGNED_SHORT);
 | |
|   fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT24, LOCAL_GL_DEPTH_COMPONENT,
 | |
|         LOCAL_GL_UNSIGNED_INT);
 | |
|   fnAdd(webgl::EffectiveFormat::DEPTH24_STENCIL8, LOCAL_GL_DEPTH_STENCIL,
 | |
|         LOCAL_GL_UNSIGNED_INT_24_8);
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionDepthTexture::IsSupported(const WebGLContext* const webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   // WEBGL_depth_texture supports DEPTH_STENCIL textures
 | |
|   const auto& gl = webgl->gl;
 | |
|   if (!gl->IsSupported(gl::GLFeature::packed_depth_stencil)) return false;
 | |
| 
 | |
|   return gl->IsSupported(gl::GLFeature::depth_texture) ||
 | |
|          gl->IsExtensionSupported(gl::GLContext::ANGLE_depth_texture);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionDisjointTimerQuery::WebGLExtensionDisjointTimerQuery(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionDisjointTimerQuery::IsSupported(
 | |
|     const WebGLContext* const webgl) {
 | |
|   if (!StaticPrefs::webgl_enable_privileged_extensions()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   return gl->IsSupported(gl::GLFeature::query_objects) &&
 | |
|          gl->IsSupported(gl::GLFeature::get_query_object_i64v) &&
 | |
|          gl->IsSupported(
 | |
|              gl::GLFeature::query_counter);  // provides GL_TIMESTAMP
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionDrawBuffers::WebGLExtensionDrawBuffers(WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionDrawBuffers::IsSupported(const WebGLContext* webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (gl->IsGLES() && gl->Version() >= 300) {
 | |
|     // ANGLE's shader translator can't translate ESSL1 exts to ESSL3. (bug
 | |
|     // 1524804)
 | |
|     return false;
 | |
|   }
 | |
|   return gl->IsSupported(gl::GLFeature::draw_buffers);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionExplicitPresent::WebGLExtensionExplicitPresent(
 | |
|     WebGLContext* const webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   if (!IsSupported(webgl)) {
 | |
|     NS_WARNING(
 | |
|         "Constructing WebGLExtensionExplicitPresent but IsSupported() is "
 | |
|         "false!");
 | |
|     // This was previously an assert, but it seems like we get races against
 | |
|     // StaticPrefs changes/initialization?
 | |
|   }
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionExplicitPresent::IsSupported(
 | |
|     const WebGLContext* const webgl) {
 | |
|   return StaticPrefs::webgl_enable_draft_extensions();
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionEXTColorBufferFloat::WebGLExtensionEXTColorBufferFloat(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| 
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
| 
 | |
|   auto fnUpdateUsage = [&fua](GLenum sizedFormat,
 | |
|                               webgl::EffectiveFormat effFormat) {
 | |
|     auto usage = fua->EditUsage(effFormat);
 | |
|     usage->SetRenderable();
 | |
|     fua->AllowRBFormat(sizedFormat, usage);
 | |
|   };
 | |
| 
 | |
| #define FOO(x) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x)
 | |
| 
 | |
|   FOO(R16F);
 | |
|   FOO(RG16F);
 | |
|   FOO(RGBA16F);
 | |
| 
 | |
|   FOO(R32F);
 | |
|   FOO(RG32F);
 | |
|   FOO(RGBA32F);
 | |
| 
 | |
|   FOO(R11F_G11F_B10F);
 | |
| 
 | |
| #undef FOO
 | |
| }
 | |
| 
 | |
| /*static*/
 | |
| bool WebGLExtensionEXTColorBufferFloat::IsSupported(const WebGLContext* webgl) {
 | |
|   if (!webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   const gl::GLContext* gl = webgl->GL();
 | |
|   return gl->IsSupported(gl::GLFeature::EXT_color_buffer_float);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionFBORenderMipmap::WebGLExtensionFBORenderMipmap(
 | |
|     WebGLContext* const webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionFBORenderMipmap::IsSupported(
 | |
|     const WebGLContext* const webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   const auto& gl = webgl->gl;
 | |
|   if (!gl->IsGLES()) return true;
 | |
|   if (gl->Version() >= 300) return true;
 | |
|   return gl->IsExtensionSupported(gl::GLContext::OES_fbo_render_mipmap);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionFloatBlend::WebGLExtensionFloatBlend(WebGLContext* const webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionFloatBlend::IsSupported(const WebGLContext* const webgl) {
 | |
|   if (!WebGLExtensionColorBufferFloat::IsSupported(webgl) &&
 | |
|       !WebGLExtensionEXTColorBufferFloat::IsSupported(webgl))
 | |
|     return false;
 | |
| 
 | |
|   const auto& gl = webgl->gl;
 | |
|   if (!gl->IsGLES() && gl->Version() >= 300) return true;
 | |
|   if (gl->IsGLES() && gl->Version() >= 320) return true;
 | |
|   return gl->IsExtensionSupported(gl::GLContext::EXT_float_blend);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionFragDepth::WebGLExtensionFragDepth(WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionFragDepth::IsSupported(const WebGLContext* webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (gl->IsGLES() && gl->Version() >= 300) {
 | |
|     // ANGLE's shader translator can't translate ESSL1 exts to ESSL3. (bug
 | |
|     // 1524804)
 | |
|     return false;
 | |
|   }
 | |
|   return gl->IsSupported(gl::GLFeature::frag_depth);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionInstancedArrays::WebGLExtensionInstancedArrays(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionInstancedArrays::IsSupported(const WebGLContext* webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   return gl->IsSupported(gl::GLFeature::draw_instanced) &&
 | |
|          gl->IsSupported(gl::GLFeature::instanced_arrays);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionMultiview::WebGLExtensionMultiview(WebGLContext* const webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionMultiview::IsSupported(const WebGLContext* const webgl) {
 | |
|   if (!webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   const auto& gl = webgl->gl;
 | |
|   return gl->IsSupported(gl::GLFeature::multiview);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionShaderTextureLod::WebGLExtensionShaderTextureLod(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionShaderTextureLod::IsSupported(const WebGLContext* webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (gl->IsGLES() && gl->Version() >= 300) {
 | |
|     // ANGLE's shader translator doesn't yet translate
 | |
|     // WebGL1+EXT_shader_texture_lod to ES3. (Bug 1491221)
 | |
|     return false;
 | |
|   }
 | |
|   return gl->IsSupported(gl::GLFeature::shader_texture_lod);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionSRGB::WebGLExtensionSRGB(WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (!gl->IsGLES()) {
 | |
|     // Desktop OpenGL requires the following to be enabled in order to
 | |
|     // support sRGB operations on framebuffers.
 | |
|     gl->fEnable(LOCAL_GL_FRAMEBUFFER_SRGB_EXT);
 | |
|   }
 | |
| 
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
| 
 | |
|   RefPtr<gl::GLContext> gl_ = gl;  // Bug 1201275
 | |
|   const auto fnAdd = [&fua, &gl_](webgl::EffectiveFormat effFormat,
 | |
|                                   GLenum format, GLenum desktopUnpackFormat) {
 | |
|     auto usage = fua->EditUsage(effFormat);
 | |
|     usage->isFilterable = true;
 | |
| 
 | |
|     webgl::DriverUnpackInfo dui = {format, format, LOCAL_GL_UNSIGNED_BYTE};
 | |
|     const auto pi = dui.ToPacking();
 | |
| 
 | |
|     if (!gl_->IsGLES()) dui.unpackFormat = desktopUnpackFormat;
 | |
| 
 | |
|     fua->AddTexUnpack(usage, pi, dui);
 | |
| 
 | |
|     fua->AllowUnsizedTexFormat(pi, usage);
 | |
|   };
 | |
| 
 | |
|   fnAdd(webgl::EffectiveFormat::SRGB8, LOCAL_GL_SRGB, LOCAL_GL_RGB);
 | |
|   fnAdd(webgl::EffectiveFormat::SRGB8_ALPHA8, LOCAL_GL_SRGB_ALPHA,
 | |
|         LOCAL_GL_RGBA);
 | |
| 
 | |
|   auto usage = fua->EditUsage(webgl::EffectiveFormat::SRGB8_ALPHA8);
 | |
|   usage->SetRenderable();
 | |
|   fua->AllowRBFormat(LOCAL_GL_SRGB8_ALPHA8, usage);
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionSRGB::IsSupported(const WebGLContext* const webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   return webgl->gl->IsSupported(gl::GLFeature::sRGB);
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionTextureFloat::WebGLExtensionTextureFloat(WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(IsSupported(webgl));
 | |
| 
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
| 
 | |
|   webgl::PackingInfo pi;
 | |
|   webgl::DriverUnpackInfo dui;
 | |
|   const GLint* swizzle = nullptr;
 | |
| 
 | |
|   const auto fnAdd = [&](webgl::EffectiveFormat effFormat) {
 | |
|     MOZ_ASSERT_IF(swizzle, gl->IsSupported(gl::GLFeature::texture_swizzle));
 | |
| 
 | |
|     auto usage = fua->EditUsage(effFormat);
 | |
|     usage->textureSwizzleRGBA = swizzle;
 | |
|     fua->AddTexUnpack(usage, pi, dui);
 | |
| 
 | |
|     fua->AllowUnsizedTexFormat(pi, usage);
 | |
|   };
 | |
| 
 | |
|   bool useSizedFormats = true;
 | |
|   const bool hasSizedLegacyFormats = gl->IsCompatibilityProfile();
 | |
|   if (gl->IsGLES() && gl->Version() < 300) {
 | |
|     useSizedFormats = false;
 | |
|   }
 | |
| 
 | |
|   ////////////////
 | |
| 
 | |
|   pi = {LOCAL_GL_RGBA, LOCAL_GL_FLOAT};
 | |
|   dui = {pi.format, pi.format, pi.type};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats || gl->IsExtensionSupported(
 | |
|                              gl::GLContext::CHROMIUM_color_buffer_float_rgba)) {
 | |
|     // ANGLE only exposes renderable RGBA32F via
 | |
|     // CHROMIUM_color_buffer_float_rgba, which uses sized formats.
 | |
|     dui.internalFormat = LOCAL_GL_RGBA32F;
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::RGBA32F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_RGB, LOCAL_GL_FLOAT};
 | |
|   dui = {pi.format, pi.format, pi.type};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     dui.internalFormat = LOCAL_GL_RGB32F;
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::RGB32F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_LUMINANCE, LOCAL_GL_FLOAT};
 | |
|   dui = {pi.format, pi.format, pi.type};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     if (hasSizedLegacyFormats) {
 | |
|       dui.internalFormat = LOCAL_GL_LUMINANCE32F_ARB;
 | |
|     } else {
 | |
|       dui.internalFormat = LOCAL_GL_R32F;
 | |
|       dui.unpackFormat = LOCAL_GL_RED;
 | |
|       swizzle = webgl::FormatUsageInfo::kLuminanceSwizzleRGBA;
 | |
|     }
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::Luminance32F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_ALPHA, LOCAL_GL_FLOAT};
 | |
|   dui = {pi.format, pi.format, pi.type};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     if (hasSizedLegacyFormats) {
 | |
|       dui.internalFormat = LOCAL_GL_ALPHA32F_ARB;
 | |
|     } else {
 | |
|       dui.internalFormat = LOCAL_GL_R32F;
 | |
|       dui.unpackFormat = LOCAL_GL_RED;
 | |
|       swizzle = webgl::FormatUsageInfo::kAlphaSwizzleRGBA;
 | |
|     }
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::Alpha32F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_LUMINANCE_ALPHA, LOCAL_GL_FLOAT};
 | |
|   dui = {pi.format, pi.format, pi.type};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     if (hasSizedLegacyFormats) {
 | |
|       dui.internalFormat = LOCAL_GL_LUMINANCE_ALPHA32F_ARB;
 | |
|     } else {
 | |
|       dui.internalFormat = LOCAL_GL_RG32F;
 | |
|       dui.unpackFormat = LOCAL_GL_RG;
 | |
|       swizzle = webgl::FormatUsageInfo::kLumAlphaSwizzleRGBA;
 | |
|     }
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::Luminance32FAlpha32F);
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionTextureFloat::IsSupported(const WebGLContext* webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (!gl->IsSupported(gl::GLFeature::texture_float)) return false;
 | |
| 
 | |
|   const bool needsSwizzle = gl->IsCoreProfile();
 | |
|   const bool hasSwizzle = gl->IsSupported(gl::GLFeature::texture_swizzle);
 | |
|   if (needsSwizzle && !hasSwizzle) return false;
 | |
| 
 | |
|   return true;
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionTextureFloatLinear::WebGLExtensionTextureFloatLinear(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
| 
 | |
|   fua->EditUsage(webgl::EffectiveFormat::RGBA32F)->isFilterable = true;
 | |
|   fua->EditUsage(webgl::EffectiveFormat::RGB32F)->isFilterable = true;
 | |
| 
 | |
|   if (webgl->IsWebGL2()) {
 | |
|     fua->EditUsage(webgl::EffectiveFormat::R32F)->isFilterable = true;
 | |
|     fua->EditUsage(webgl::EffectiveFormat::RG32F)->isFilterable = true;
 | |
|   } else {
 | |
|     fua->EditUsage(webgl::EffectiveFormat::Luminance32FAlpha32F)->isFilterable =
 | |
|         true;
 | |
|     fua->EditUsage(webgl::EffectiveFormat::Luminance32F)->isFilterable = true;
 | |
|     fua->EditUsage(webgl::EffectiveFormat::Alpha32F)->isFilterable = true;
 | |
|   }
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionTextureHalfFloat::WebGLExtensionTextureHalfFloat(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
| 
 | |
|   webgl::PackingInfo pi;
 | |
|   webgl::DriverUnpackInfo dui;
 | |
|   const GLint* swizzle = nullptr;
 | |
| 
 | |
|   const auto fnAdd = [&](webgl::EffectiveFormat effFormat) {
 | |
|     MOZ_ASSERT_IF(swizzle, gl->IsSupported(gl::GLFeature::texture_swizzle));
 | |
| 
 | |
|     auto usage = fua->EditUsage(effFormat);
 | |
|     usage->textureSwizzleRGBA = swizzle;
 | |
|     fua->AddTexUnpack(usage, pi, dui);
 | |
| 
 | |
|     fua->AllowUnsizedTexFormat(pi, usage);
 | |
|   };
 | |
| 
 | |
|   bool useSizedFormats = true;
 | |
|   const bool hasSizedLegacyFormats = gl->IsCompatibilityProfile();
 | |
|   if (gl->IsGLES() && gl->Version() < 300) {
 | |
|     useSizedFormats = false;
 | |
|   }
 | |
| 
 | |
|   GLenum driverUnpackType = LOCAL_GL_HALF_FLOAT;
 | |
|   if (!gl->IsSupported(gl::GLFeature::texture_half_float)) {
 | |
|     MOZ_ASSERT(gl->IsExtensionSupported(gl::GLContext::OES_texture_half_float));
 | |
|     driverUnpackType = LOCAL_GL_HALF_FLOAT_OES;
 | |
|   }
 | |
| 
 | |
|   ////////////////
 | |
| 
 | |
|   pi = {LOCAL_GL_RGBA, LOCAL_GL_HALF_FLOAT_OES};
 | |
|   dui = {pi.format, pi.format, driverUnpackType};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     dui.internalFormat = LOCAL_GL_RGBA16F;
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::RGBA16F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_RGB, LOCAL_GL_HALF_FLOAT_OES};
 | |
|   dui = {pi.format, pi.format, driverUnpackType};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     dui.internalFormat = LOCAL_GL_RGB16F;
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::RGB16F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_LUMINANCE, LOCAL_GL_HALF_FLOAT_OES};
 | |
|   dui = {pi.format, pi.format, driverUnpackType};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     if (hasSizedLegacyFormats) {
 | |
|       dui.internalFormat = LOCAL_GL_LUMINANCE16F_ARB;
 | |
|     } else {
 | |
|       dui.internalFormat = LOCAL_GL_R16F;
 | |
|       dui.unpackFormat = LOCAL_GL_RED;
 | |
|       swizzle = webgl::FormatUsageInfo::kLuminanceSwizzleRGBA;
 | |
|     }
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::Luminance16F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_ALPHA, LOCAL_GL_HALF_FLOAT_OES};
 | |
|   dui = {pi.format, pi.format, driverUnpackType};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     if (hasSizedLegacyFormats) {
 | |
|       dui.internalFormat = LOCAL_GL_ALPHA16F_ARB;
 | |
|     } else {
 | |
|       dui.internalFormat = LOCAL_GL_R16F;
 | |
|       dui.unpackFormat = LOCAL_GL_RED;
 | |
|       swizzle = webgl::FormatUsageInfo::kAlphaSwizzleRGBA;
 | |
|     }
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::Alpha16F);
 | |
| 
 | |
|   //////
 | |
| 
 | |
|   pi = {LOCAL_GL_LUMINANCE_ALPHA, LOCAL_GL_HALF_FLOAT_OES};
 | |
|   dui = {pi.format, pi.format, driverUnpackType};
 | |
|   swizzle = nullptr;
 | |
|   if (useSizedFormats) {
 | |
|     if (hasSizedLegacyFormats) {
 | |
|       dui.internalFormat = LOCAL_GL_LUMINANCE_ALPHA16F_ARB;
 | |
|     } else {
 | |
|       dui.internalFormat = LOCAL_GL_RG16F;
 | |
|       dui.unpackFormat = LOCAL_GL_RG;
 | |
|       swizzle = webgl::FormatUsageInfo::kLumAlphaSwizzleRGBA;
 | |
|     }
 | |
|   }
 | |
|   fnAdd(webgl::EffectiveFormat::Luminance16FAlpha16F);
 | |
| }
 | |
| 
 | |
| bool WebGLExtensionTextureHalfFloat::IsSupported(const WebGLContext* webgl) {
 | |
|   if (webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   gl::GLContext* gl = webgl->GL();
 | |
|   if (!gl->IsSupported(gl::GLFeature::texture_half_float) &&
 | |
|       !gl->IsExtensionSupported(gl::GLContext::OES_texture_half_float)) {
 | |
|     return false;
 | |
|   }
 | |
| 
 | |
|   const bool needsSwizzle = gl->IsCoreProfile();
 | |
|   const bool hasSwizzle = gl->IsSupported(gl::GLFeature::texture_swizzle);
 | |
|   if (needsSwizzle && !hasSwizzle) return false;
 | |
| 
 | |
|   return true;
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| WebGLExtensionTextureHalfFloatLinear::WebGLExtensionTextureHalfFloatLinear(
 | |
|     WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   MOZ_ASSERT(!webgl->IsWebGL2());
 | |
|   auto& fua = webgl->mFormatUsage;
 | |
| 
 | |
|   fua->EditUsage(webgl::EffectiveFormat::RGBA16F)->isFilterable = true;
 | |
|   fua->EditUsage(webgl::EffectiveFormat::RGB16F)->isFilterable = true;
 | |
|   fua->EditUsage(webgl::EffectiveFormat::Luminance16FAlpha16F)->isFilterable =
 | |
|       true;
 | |
|   fua->EditUsage(webgl::EffectiveFormat::Luminance16F)->isFilterable = true;
 | |
|   fua->EditUsage(webgl::EffectiveFormat::Alpha16F)->isFilterable = true;
 | |
| }
 | |
| 
 | |
| // -
 | |
| 
 | |
| bool WebGLExtensionTextureNorm16::IsSupported(const WebGLContext* const webgl) {
 | |
|   if (!StaticPrefs::webgl_enable_draft_extensions()) return false;
 | |
|   if (!webgl->IsWebGL2()) return false;
 | |
| 
 | |
|   const auto& gl = webgl->gl;
 | |
| 
 | |
|   // ANGLE's support is broken in our checkout.
 | |
|   if (gl->IsANGLE()) return false;
 | |
| 
 | |
|   return gl->IsSupported(gl::GLFeature::texture_norm16);
 | |
| }
 | |
| 
 | |
| WebGLExtensionTextureNorm16::WebGLExtensionTextureNorm16(WebGLContext* webgl)
 | |
|     : WebGLExtensionBase(webgl) {
 | |
|   if (!IsSupported(webgl)) {
 | |
|     NS_WARNING(
 | |
|         "Constructing WebGLExtensionTextureNorm16 but IsSupported() is "
 | |
|         "false!");
 | |
|     // This was previously an assert, but it seems like we get races against
 | |
|     // StaticPrefs changes/initialization?
 | |
|   }
 | |
| 
 | |
|   auto& fua = *webgl->mFormatUsage;
 | |
| 
 | |
|   const auto fnAdd = [&](webgl::EffectiveFormat effFormat,
 | |
|                          const bool renderable, const webgl::PackingInfo& pi) {
 | |
|     auto& usage = *fua.EditUsage(effFormat);
 | |
|     const auto& format = *usage.format;
 | |
| 
 | |
|     const auto dui =
 | |
|         webgl::DriverUnpackInfo{format.sizedFormat, pi.format, pi.type};
 | |
|     fua.AddTexUnpack(&usage, pi, dui);
 | |
| 
 | |
|     fua.AllowSizedTexFormat(format.sizedFormat, &usage);
 | |
|     fua.AllowUnsizedTexFormat(pi, &usage);
 | |
| 
 | |
|     if (renderable) {
 | |
|       usage.SetRenderable();
 | |
|       fua.AllowRBFormat(format.sizedFormat, &usage);
 | |
|     }
 | |
|   };
 | |
| 
 | |
|   fnAdd(webgl::EffectiveFormat::R16, true,
 | |
|         {LOCAL_GL_RED, LOCAL_GL_UNSIGNED_SHORT});
 | |
|   fnAdd(webgl::EffectiveFormat::RG16, true,
 | |
|         {LOCAL_GL_RG, LOCAL_GL_UNSIGNED_SHORT});
 | |
|   fnAdd(webgl::EffectiveFormat::RGB16, false,
 | |
|         {LOCAL_GL_RGB, LOCAL_GL_UNSIGNED_SHORT});
 | |
|   fnAdd(webgl::EffectiveFormat::RGBA16, true,
 | |
|         {LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_SHORT});
 | |
| 
 | |
|   fnAdd(webgl::EffectiveFormat::R16_SNORM, false,
 | |
|         {LOCAL_GL_RED, LOCAL_GL_SHORT});
 | |
|   fnAdd(webgl::EffectiveFormat::RG16_SNORM, false,
 | |
|         {LOCAL_GL_RG, LOCAL_GL_SHORT});
 | |
|   fnAdd(webgl::EffectiveFormat::RGB16_SNORM, false,
 | |
|         {LOCAL_GL_RGB, LOCAL_GL_SHORT});
 | |
|   fnAdd(webgl::EffectiveFormat::RGBA16_SNORM, false,
 | |
|         {LOCAL_GL_RGBA, LOCAL_GL_SHORT});
 | |
| }
 | |
| 
 | |
| }  // namespace mozilla
 | 
