зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.9 KiB
C++
60 строки
1.9 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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#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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#include "WebGLFormats.h"
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namespace mozilla {
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WebGLExtensionSRGB::WebGLExtensionSRGB(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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gl::GLContext* gl = webgl->GL();
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if (!gl->IsGLES()) {
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// Desktop OpenGL requires the following to be enabled in order to
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// support sRGB operations on framebuffers.
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gl->fEnable(LOCAL_GL_FRAMEBUFFER_SRGB_EXT);
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}
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auto& fua = webgl->mFormatUsage;
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RefPtr<gl::GLContext> gl_ = gl; // Bug 1201275
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const auto fnAdd = [&fua, &gl_](webgl::EffectiveFormat effFormat,
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GLenum format, GLenum desktopUnpackFormat) {
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auto usage = fua->EditUsage(effFormat);
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usage->isFilterable = true;
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webgl::DriverUnpackInfo dui = {format, format, LOCAL_GL_UNSIGNED_BYTE};
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const auto pi = dui.ToPacking();
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if (!gl_->IsGLES()) dui.unpackFormat = desktopUnpackFormat;
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fua->AddTexUnpack(usage, pi, dui);
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fua->AllowUnsizedTexFormat(pi, usage);
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};
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fnAdd(webgl::EffectiveFormat::SRGB8, LOCAL_GL_SRGB, LOCAL_GL_RGB);
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fnAdd(webgl::EffectiveFormat::SRGB8_ALPHA8, LOCAL_GL_SRGB_ALPHA,
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LOCAL_GL_RGBA);
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auto usage = fua->EditUsage(webgl::EffectiveFormat::SRGB8_ALPHA8);
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usage->SetRenderable();
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fua->AllowRBFormat(LOCAL_GL_SRGB8_ALPHA8, usage);
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}
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bool WebGLExtensionSRGB::IsSupported(const WebGLContext* const webgl) {
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if (webgl->IsWebGL2()) return false;
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return webgl->gl->IsSupported(gl::GLFeature::sRGB);
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}
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} // namespace mozilla
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