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64 lines
2.1 KiB
C++
64 lines
2.1 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 "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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using mozilla::webgl::EffectiveFormat;
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WebGLExtensionSRGB::WebGLExtensionSRGB(WebGLContext* webgl)
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: WebGLExtensionBase(webgl)
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{
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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->MakeCurrent();
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gl->fEnable(LOCAL_GL_FRAMEBUFFER_SRGB_EXT);
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}
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webgl::FormatUsageAuthority* authority = webgl->mFormatUsage.get();
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auto addFormatIfMissing = [authority](EffectiveFormat effectiveFormat,
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GLenum unpackFormat, GLenum unpackType,
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bool asRenderbuffer)
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{
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if (!authority->GetUsage(effectiveFormat)) {
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authority->AddFormat(effectiveFormat, asRenderbuffer, asRenderbuffer, true, true);
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authority->AddUnpackOption(unpackFormat, unpackType, effectiveFormat);
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}
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};
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addFormatIfMissing(EffectiveFormat::SRGB8 , LOCAL_GL_SRGB , LOCAL_GL_UNSIGNED_BYTE, false);
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addFormatIfMissing(EffectiveFormat::SRGB8_ALPHA8, LOCAL_GL_SRGB_ALPHA, LOCAL_GL_UNSIGNED_BYTE, true);
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}
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WebGLExtensionSRGB::~WebGLExtensionSRGB()
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{
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}
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bool
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WebGLExtensionSRGB::IsSupported(const WebGLContext* webgl)
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{
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gl::GLContext* gl = webgl->GL();
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return gl->IsSupported(gl::GLFeature::sRGB_framebuffer) &&
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gl->IsSupported(gl::GLFeature::sRGB_texture);
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}
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IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionSRGB, EXT_sRGB)
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} // namespace mozilla
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