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gfx/layers/opengl/CompositingRenderTargetOGL.h@6474c204b198 (annotated)

gfx/layers/opengl/CompositingRenderTargetOGL.h

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0 2 * This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef MOZILLA_GFX_COMPOSITINGRENDERTARGETOGL_H
michael@0 7 #define MOZILLA_GFX_COMPOSITINGRENDERTARGETOGL_H
michael@0 8
michael@0 9 #include "GLContextTypes.h" // for GLContext
michael@0 10 #include "GLDefs.h" // for GLenum, LOCAL_GL_FRAMEBUFFER, etc
michael@0 11 #include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
michael@0 12 #include "mozilla/Attributes.h" // for MOZ_OVERRIDE
michael@0 13 #include "mozilla/RefPtr.h" // for RefPtr, TemporaryRef
michael@0 14 #include "mozilla/gfx/Point.h" // for IntSize, IntSizeTyped
michael@0 15 #include "mozilla/gfx/Types.h" // for SurfaceFormat, etc
michael@0 16 #include "mozilla/layers/Compositor.h" // for SurfaceInitMode, etc
michael@0 17 #include "mozilla/layers/TextureHost.h" // for CompositingRenderTarget
michael@0 18 #include "mozilla/layers/CompositorOGL.h" // for CompositorOGL
michael@0 19 #include "mozilla/mozalloc.h" // for operator new
michael@0 20 #include "nsAString.h"
michael@0 21 #include "nsCOMPtr.h" // for already_AddRefed
michael@0 22 #include "nsDebug.h" // for NS_ERROR, NS_WARNING
michael@0 23 #include "nsString.h" // for nsAutoCString
michael@0 24
michael@0 25
michael@0 26 namespace mozilla {
michael@0 27 namespace gl {
michael@0 28 class BindableTexture;
michael@0 29 }
michael@0 30 namespace gfx {
michael@0 31 class DataSourceSurface;
michael@0 32 }
michael@0 33
michael@0 34 namespace layers {
michael@0 35
michael@0 36 class TextureSource;
michael@0 37
michael@0 38 class CompositingRenderTargetOGL : public CompositingRenderTarget
michael@0 39 {
michael@0 40 typedef mozilla::gl::GLContext GLContext;
michael@0 41
michael@0 42 // For lazy initialisation of the GL stuff
michael@0 43 struct InitParams
michael@0 44 {
michael@0 45 InitParams() : mStatus(NO_PARAMS) {}
michael@0 46 InitParams(const gfx::IntSize& aSize,
michael@0 47 GLenum aFBOTextureTarget,
michael@0 48 SurfaceInitMode aInit)
michael@0 49 : mStatus(READY)
michael@0 50 , mSize(aSize)
michael@0 51 , mFBOTextureTarget(aFBOTextureTarget)
michael@0 52 , mInit(aInit)
michael@0 53 {}
michael@0 54
michael@0 55 enum {
michael@0 56 NO_PARAMS,
michael@0 57 READY,
michael@0 58 INITIALIZED
michael@0 59 } mStatus;
michael@0 60 gfx::IntSize mSize;
michael@0 61 GLenum mFBOTextureTarget;
michael@0 62 SurfaceInitMode mInit;
michael@0 63 };
michael@0 64
michael@0 65 public:
michael@0 66 CompositingRenderTargetOGL(CompositorOGL* aCompositor, const gfx::IntPoint& aOrigin,
michael@0 67 GLuint aTexure, GLuint aFBO)
michael@0 68 : CompositingRenderTarget(aOrigin)
michael@0 69 , mInitParams()
michael@0 70 , mTransform()
michael@0 71 , mCompositor(aCompositor)
michael@0 72 , mGL(aCompositor->gl())
michael@0 73 , mTextureHandle(aTexure)
michael@0 74 , mFBO(aFBO)
michael@0 75 {}
michael@0 76
michael@0 77 ~CompositingRenderTargetOGL();
michael@0 78
michael@0 79 /**
michael@0 80 * Create a render target around the default FBO, for rendering straight to
michael@0 81 * the window.
michael@0 82 */
michael@0 83 static TemporaryRef<CompositingRenderTargetOGL>
michael@0 84 RenderTargetForWindow(CompositorOGL* aCompositor,
michael@0 85 const gfx::IntSize& aSize,
michael@0 86 const gfx::Matrix& aTransform)
michael@0 87 {
michael@0 88 RefPtr<CompositingRenderTargetOGL> result
michael@0 89 = new CompositingRenderTargetOGL(aCompositor, gfx::IntPoint(0, 0), 0, 0);
michael@0 90 result->mTransform = aTransform;
michael@0 91 result->mInitParams = InitParams(aSize, 0, INIT_MODE_NONE);
michael@0 92 result->mInitParams.mStatus = InitParams::INITIALIZED;
michael@0 93 return result.forget();
michael@0 94 }
michael@0 95
michael@0 96 /**
michael@0 97 * Some initialisation work on the backing FBO and texture.
michael@0 98 * We do this lazily so that when we first set this render target on the
michael@0 99 * compositor we do not have to re-bind the FBO after unbinding it, or
michael@0 100 * alternatively leave the FBO bound after creation.
michael@0 101 */
michael@0 102 void Initialize(const gfx::IntSize& aSize,
michael@0 103 GLenum aFBOTextureTarget,
michael@0 104 SurfaceInitMode aInit)
michael@0 105 {
michael@0 106 MOZ_ASSERT(mInitParams.mStatus == InitParams::NO_PARAMS, "Initialized twice?");
michael@0 107 // postpone initialization until we actually want to use this render target
michael@0 108 mInitParams = InitParams(aSize, aFBOTextureTarget, aInit);
michael@0 109 }
michael@0 110
michael@0 111 void BindTexture(GLenum aTextureUnit, GLenum aTextureTarget);
michael@0 112
michael@0 113 /**
michael@0 114 * Call when we want to draw into our FBO
michael@0 115 */
michael@0 116 void BindRenderTarget();
michael@0 117
michael@0 118 GLuint GetFBO() const
michael@0 119 {
michael@0 120 MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
michael@0 121 return mFBO;
michael@0 122 }
michael@0 123
michael@0 124 GLuint GetTextureHandle() const
michael@0 125 {
michael@0 126 MOZ_ASSERT(mInitParams.mStatus == InitParams::INITIALIZED);
michael@0 127 return mTextureHandle;
michael@0 128 }
michael@0 129
michael@0 130 // TextureSourceOGL
michael@0 131 TextureSourceOGL* AsSourceOGL() MOZ_OVERRIDE
michael@0 132 {
michael@0 133 // XXX - Bug 900770
michael@0 134 MOZ_ASSERT(false, "CompositingRenderTargetOGL should not be used as a TextureSource");
michael@0 135 return nullptr;
michael@0 136 }
michael@0 137 gfx::IntSize GetSize() const MOZ_OVERRIDE
michael@0 138 {
michael@0 139 // XXX - Bug 900770
michael@0 140 MOZ_ASSERT(false, "CompositingRenderTargetOGL should not be used as a TextureSource");
michael@0 141 return gfx::IntSize(0, 0);
michael@0 142 }
michael@0 143
michael@0 144 gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
michael@0 145 {
michael@0 146 // XXX - Should it be implemented ? is the above assert true ?
michael@0 147 MOZ_ASSERT(false, "Not implemented");
michael@0 148 return gfx::SurfaceFormat::UNKNOWN;
michael@0 149 }
michael@0 150
michael@0 151 const gfx::Matrix& GetTransform() {
michael@0 152 return mTransform;
michael@0 153 }
michael@0 154
michael@0 155 #ifdef MOZ_DUMP_PAINTING
michael@0 156 virtual TemporaryRef<gfx::DataSourceSurface> Dump(Compositor* aCompositor);
michael@0 157 #endif
michael@0 158
michael@0 159 private:
michael@0 160 /**
michael@0 161 * Actually do the initialisation. Note that we leave our FBO bound, and so
michael@0 162 * calling this method is only suitable when about to use this render target.
michael@0 163 */
michael@0 164 void InitializeImpl();
michael@0 165
michael@0 166 InitParams mInitParams;
michael@0 167 gfx::Matrix mTransform;
michael@0 168 CompositorOGL* mCompositor;
michael@0 169 GLContext* mGL;
michael@0 170 GLuint mTextureHandle;
michael@0 171 GLuint mFBO;
michael@0 172 };
michael@0 173
michael@0 174 }
michael@0 175 }
michael@0 176
michael@0 177 #endif /* MOZILLA_GFX_SURFACEOGL_H */

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