1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/basic/BasicCompositor.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,150 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 +* This Source Code Form is subject to the terms of the Mozilla Public
1.6 +* License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 +* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef MOZILLA_GFX_BASICCOMPOSITOR_H
1.10 +#define MOZILLA_GFX_BASICCOMPOSITOR_H
1.11 +
1.12 +#include "mozilla/layers/Compositor.h"
1.13 +#include "mozilla/layers/TextureHost.h"
1.14 +#include "mozilla/gfx/2D.h"
1.15 +#include "nsAutoPtr.h"
1.16 +
1.17 +class gfxContext;
1.18 +
1.19 +namespace mozilla {
1.20 +namespace layers {
1.21 +
1.22 +class BasicCompositingRenderTarget : public CompositingRenderTarget
1.23 +{
1.24 +public:
1.25 + BasicCompositingRenderTarget(gfx::DrawTarget* aDrawTarget, const gfx::IntRect& aRect)
1.26 + : CompositingRenderTarget(aRect.TopLeft())
1.27 + , mDrawTarget(aDrawTarget)
1.28 + , mSize(aRect.Size())
1.29 + { }
1.30 +
1.31 + virtual gfx::IntSize GetSize() const MOZ_OVERRIDE { return mSize; }
1.32 +
1.33 + virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
1.34 + {
1.35 + return mDrawTarget ? mDrawTarget->GetFormat()
1.36 + : gfx::SurfaceFormat(gfx::SurfaceFormat::UNKNOWN);
1.37 + }
1.38 +
1.39 + RefPtr<gfx::DrawTarget> mDrawTarget;
1.40 + gfx::IntSize mSize;
1.41 +};
1.42 +
1.43 +class BasicCompositor : public Compositor
1.44 +{
1.45 +public:
1.46 + BasicCompositor(nsIWidget *aWidget);
1.47 +
1.48 + virtual ~BasicCompositor();
1.49 +
1.50 +
1.51 + virtual bool Initialize() MOZ_OVERRIDE { return true; };
1.52 +
1.53 + virtual void Destroy() MOZ_OVERRIDE;
1.54 +
1.55 + virtual TextureFactoryIdentifier GetTextureFactoryIdentifier() MOZ_OVERRIDE
1.56 + {
1.57 + return TextureFactoryIdentifier(LayersBackend::LAYERS_BASIC,
1.58 + XRE_GetProcessType(),
1.59 + GetMaxTextureSize());
1.60 + }
1.61 +
1.62 + virtual TemporaryRef<CompositingRenderTarget>
1.63 + CreateRenderTarget(const gfx::IntRect &aRect, SurfaceInitMode aInit) MOZ_OVERRIDE;
1.64 +
1.65 + virtual TemporaryRef<CompositingRenderTarget>
1.66 + CreateRenderTargetFromSource(const gfx::IntRect &aRect,
1.67 + const CompositingRenderTarget *aSource,
1.68 + const gfx::IntPoint &aSourcePoint) MOZ_OVERRIDE;
1.69 +
1.70 + virtual TemporaryRef<DataTextureSource>
1.71 + CreateDataTextureSource(TextureFlags aFlags = 0) MOZ_OVERRIDE;
1.72 +
1.73 + virtual bool SupportsEffect(EffectTypes aEffect) MOZ_OVERRIDE;
1.74 +
1.75 + virtual void SetRenderTarget(CompositingRenderTarget *aSource) MOZ_OVERRIDE
1.76 + {
1.77 + mRenderTarget = static_cast<BasicCompositingRenderTarget*>(aSource);
1.78 + }
1.79 + virtual CompositingRenderTarget* GetCurrentRenderTarget() const MOZ_OVERRIDE
1.80 + {
1.81 + return mRenderTarget;
1.82 + }
1.83 +
1.84 + virtual void DrawQuad(const gfx::Rect& aRect,
1.85 + const gfx::Rect& aClipRect,
1.86 + const EffectChain &aEffectChain,
1.87 + gfx::Float aOpacity,
1.88 + const gfx::Matrix4x4 &aTransform) MOZ_OVERRIDE;
1.89 +
1.90 + virtual void BeginFrame(const nsIntRegion& aInvalidRegion,
1.91 + const gfx::Rect *aClipRectIn,
1.92 + const gfx::Matrix& aTransform,
1.93 + const gfx::Rect& aRenderBounds,
1.94 + gfx::Rect *aClipRectOut = nullptr,
1.95 + gfx::Rect *aRenderBoundsOut = nullptr) MOZ_OVERRIDE;
1.96 + virtual void EndFrame() MOZ_OVERRIDE;
1.97 + virtual void EndFrameForExternalComposition(const gfx::Matrix& aTransform) MOZ_OVERRIDE
1.98 + {
1.99 + NS_RUNTIMEABORT("We shouldn't ever hit this");
1.100 + }
1.101 + virtual void AbortFrame() MOZ_OVERRIDE;
1.102 +
1.103 + virtual bool SupportsPartialTextureUpdate() { return true; }
1.104 + virtual bool CanUseCanvasLayerForSize(const gfx::IntSize &aSize) MOZ_OVERRIDE { return true; }
1.105 + virtual int32_t GetMaxTextureSize() const MOZ_OVERRIDE { return INT32_MAX; }
1.106 + virtual void SetDestinationSurfaceSize(const gfx::IntSize& aSize) MOZ_OVERRIDE { }
1.107 + virtual void SetTargetContext(gfx::DrawTarget* aTarget) MOZ_OVERRIDE
1.108 + {
1.109 + mCopyTarget = aTarget;
1.110 + }
1.111 +
1.112 + virtual void SetScreenRenderOffset(const ScreenPoint& aOffset) MOZ_OVERRIDE {
1.113 + }
1.114 +
1.115 + virtual void MakeCurrent(MakeCurrentFlags aFlags = 0) { }
1.116 +
1.117 + virtual void PrepareViewport(const gfx::IntSize& aSize,
1.118 + const gfx::Matrix& aWorldTransform) MOZ_OVERRIDE { }
1.119 +
1.120 + virtual const char* Name() const { return "Basic"; }
1.121 +
1.122 + virtual LayersBackend GetBackendType() const MOZ_OVERRIDE {
1.123 + return LayersBackend::LAYERS_BASIC;
1.124 + }
1.125 +
1.126 + virtual nsIWidget* GetWidget() const MOZ_OVERRIDE { return mWidget; }
1.127 +
1.128 + gfx::DrawTarget *GetDrawTarget() { return mDrawTarget; }
1.129 +
1.130 +private:
1.131 +
1.132 + virtual gfx::IntSize GetWidgetSize() const MOZ_OVERRIDE { return mWidgetSize; }
1.133 +
1.134 + // Widget associated with this compositor
1.135 + nsIWidget *mWidget;
1.136 + gfx::IntSize mWidgetSize;
1.137 +
1.138 + // The final destination surface
1.139 + RefPtr<gfx::DrawTarget> mDrawTarget;
1.140 + // The current render target for drawing
1.141 + RefPtr<BasicCompositingRenderTarget> mRenderTarget;
1.142 + // An optional destination target to copy the results
1.143 + // to after drawing is completed.
1.144 + RefPtr<gfx::DrawTarget> mCopyTarget;
1.145 +
1.146 + gfx::IntRect mInvalidRect;
1.147 + nsIntRegion mInvalidRegion;
1.148 +};
1.149 +
1.150 +} // namespace layers
1.151 +} // namespace mozilla
1.152 +
1.153 +#endif /* MOZILLA_GFX_BASICCOMPOSITOR_H */
