зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.9 KiB
C++
60 строки
1.9 KiB
C++
/* 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLExtensions.h"
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#include "GLContext.h"
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#include "mozilla/dom/WebGLRenderingContextBinding.h"
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#include "WebGLContext.h"
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#ifdef FOO
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#error FOO is already defined! We use FOO() macros to keep things succinct in this file.
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#endif
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namespace mozilla {
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WebGLExtensionCompressedTextureS3TC::WebGLExtensionCompressedTextureS3TC(WebGLContext* webgl)
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: WebGLExtensionBase(webgl)
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{
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RefPtr<WebGLContext> webgl_ = webgl; // Bug 1201275
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const auto fnAdd = [&webgl_](GLenum sizedFormat, webgl::EffectiveFormat effFormat) {
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auto& fua = webgl_->mFormatUsage;
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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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webgl_->mCompressedTextureFormats.AppendElement(sizedFormat);
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};
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#define FOO(x) LOCAL_GL_ ## x, webgl::EffectiveFormat::x
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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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}
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WebGLExtensionCompressedTextureS3TC::~WebGLExtensionCompressedTextureS3TC()
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{
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}
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bool
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WebGLExtensionCompressedTextureS3TC::IsSupported(const WebGLContext* webgl)
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{
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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(gl::GLContext::EXT_texture_compression_dxt1) &&
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gl->IsExtensionSupported(gl::GLContext::ANGLE_texture_compression_dxt3) &&
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gl->IsExtensionSupported(gl::GLContext::ANGLE_texture_compression_dxt5);
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}
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IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionCompressedTextureS3TC, WEBGL_compressed_texture_s3tc)
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} // namespace mozilla
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