140 lines
3.8 KiB
C++
140 lines
3.8 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 "GLManager.h"
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#include "CompositorOGL.h" // for CompositorOGL
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#include "GLContext.h" // for GLContext
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#include "LayerManagerOGL.h" // for LayerManagerOGL
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#include "Layers.h" // for LayerManager
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#include "mozilla/Assertions.h" // for MOZ_CRASH
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#include "mozilla/Attributes.h" // for MOZ_OVERRIDE
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#include "mozilla/RefPtr.h" // for RefPtr
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#include "mozilla/layers/Compositor.h" // for Compositor
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#include "mozilla/layers/LayerManagerComposite.h"
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#include "mozilla/layers/LayersTypes.h"
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#include "mozilla/mozalloc.h" // for operator new, etc
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#include "nsAutoPtr.h" // for nsRefPtr
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#include "nsISupportsImpl.h" // for LayerManager::AddRef, etc
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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inline ShaderProgramType
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GetProgramTypeForSurfaceFormat(GLenum aTarget, gfx::SurfaceFormat aFormat)
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{
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if (aTarget == LOCAL_GL_TEXTURE_RECTANGLE_ARB) {
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switch (aFormat) {
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case gfx::FORMAT_R8G8B8X8:
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case gfx::FORMAT_R5G6B5:
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return RGBXRectLayerProgramType;
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case gfx::FORMAT_R8G8B8A8:
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return RGBARectLayerProgramType;
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default:
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MOZ_CRASH("unhandled program type");
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}
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}
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switch (aFormat) {
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case gfx::FORMAT_B8G8R8A8:
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return BGRALayerProgramType;
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case gfx::FORMAT_B8G8R8X8:
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return BGRXLayerProgramType;
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case gfx::FORMAT_R8G8B8X8:
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case gfx::FORMAT_R5G6B5:
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return RGBXLayerProgramType;
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case gfx::FORMAT_R8G8B8A8:
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return RGBALayerProgramType;
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default:
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MOZ_CRASH("unhandled program type");
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}
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}
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class GLManagerLayerManager : public GLManager
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{
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public:
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GLManagerLayerManager(LayerManagerOGL* aManager)
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: mImpl(aManager)
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{}
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virtual GLContext* gl() const MOZ_OVERRIDE
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{
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return mImpl->gl();
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}
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virtual ShaderProgramOGL* GetProgram(GLenum aTarget, gfx::SurfaceFormat aFormat) MOZ_OVERRIDE
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{
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return mImpl->GetProgram(GetProgramTypeForSurfaceFormat(aTarget, aFormat));
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}
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virtual gfx3DMatrix& GetProjMatrix() const MOZ_OVERRIDE
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{
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return mImpl->mProjMatrix;
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}
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virtual void BindAndDrawQuad(ShaderProgramOGL *aProg) MOZ_OVERRIDE
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{
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mImpl->BindAndDrawQuad(aProg);
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}
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private:
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nsRefPtr<LayerManagerOGL> mImpl;
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};
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class GLManagerCompositor : public GLManager
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{
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public:
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GLManagerCompositor(CompositorOGL* aCompositor)
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: mImpl(aCompositor)
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{}
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virtual GLContext* gl() const MOZ_OVERRIDE
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{
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return mImpl->gl();
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}
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virtual ShaderProgramOGL* GetProgram(GLenum aTarget, gfx::SurfaceFormat aFormat) MOZ_OVERRIDE
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{
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ShaderConfigOGL config = mImpl->GetShaderConfigFor(aTarget, aFormat);
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return mImpl->GetShaderProgramFor(config);
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}
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virtual const gfx3DMatrix& GetProjMatrix() const MOZ_OVERRIDE
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{
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return mImpl->GetProjMatrix();
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}
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virtual void BindAndDrawQuad(ShaderProgramOGL *aProg) MOZ_OVERRIDE
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{
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mImpl->BindAndDrawQuad(aProg);
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}
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private:
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RefPtr<CompositorOGL> mImpl;
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};
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/* static */ GLManager*
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GLManager::CreateGLManager(LayerManager* aManager)
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{
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if (!aManager) {
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return nullptr;
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} else if (aManager->GetBackendType() == LAYERS_OPENGL) {
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return new GLManagerLayerManager(static_cast<LayerManagerOGL*>(aManager));
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}
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if (aManager->GetBackendType() == LAYERS_NONE) {
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if (Compositor::GetBackend() == LAYERS_OPENGL) {
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return new GLManagerCompositor(static_cast<CompositorOGL*>(
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static_cast<LayerManagerComposite*>(aManager)->GetCompositor()));
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} else {
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return nullptr;
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}
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}
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MOZ_CRASH("Cannot create GLManager for non-GL layer manager");
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}
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}
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}
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