mirror of
https://github.com/mozilla/gecko-dev.git
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618 lines
20 KiB
C++
618 lines
20 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 "BasicCompositor.h"
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#include "BasicLayersImpl.h" // for FillRectWithMask
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#include "TextureHostBasic.h"
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#include "mozilla/layers/Effects.h"
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#include "nsIWidget.h"
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#include "gfx2DGlue.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Helpers.h"
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#include "mozilla/gfx/Tools.h"
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#include "gfxUtils.h"
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#include "YCbCrUtils.h"
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#include <algorithm>
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#include "ImageContainer.h"
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#include "gfxPrefs.h"
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namespace mozilla {
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using namespace mozilla::gfx;
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namespace layers {
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class DataTextureSourceBasic : public DataTextureSource
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, public TextureSourceBasic
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{
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public:
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virtual const char* Name() const override { return "DataTextureSourceBasic"; }
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explicit DataTextureSourceBasic(DataSourceSurface* aSurface)
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: mSurface(aSurface)
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, mWrappingExistingData(!!aSurface)
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{}
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virtual DataTextureSource* AsDataTextureSource() override
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{
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// If the texture wraps someone else's memory we'd rather not use it as
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// a DataTextureSource per say (that is call Update on it).
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return mWrappingExistingData ? nullptr : this;
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}
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virtual TextureSourceBasic* AsSourceBasic() override { return this; }
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virtual gfx::SourceSurface* GetSurface(DrawTarget* aTarget) override { return mSurface; }
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SurfaceFormat GetFormat() const override
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{
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return mSurface ? mSurface->GetFormat() : gfx::SurfaceFormat::UNKNOWN;
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}
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virtual IntSize GetSize() const override
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{
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return mSurface ? mSurface->GetSize() : gfx::IntSize(0, 0);
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}
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virtual bool Update(gfx::DataSourceSurface* aSurface,
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nsIntRegion* aDestRegion = nullptr,
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gfx::IntPoint* aSrcOffset = nullptr) override
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{
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MOZ_ASSERT(!mWrappingExistingData);
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if (mWrappingExistingData) {
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return false;
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}
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mSurface = aSurface;
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return true;
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}
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virtual void DeallocateDeviceData() override
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{
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mSurface = nullptr;
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SetUpdateSerial(0);
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}
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public:
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RefPtr<gfx::DataSourceSurface> mSurface;
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bool mWrappingExistingData;
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};
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BasicCompositor::BasicCompositor(nsIWidget *aWidget)
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: mWidget(aWidget)
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, mDidExternalComposition(false)
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{
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MOZ_COUNT_CTOR(BasicCompositor);
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mMaxTextureSize =
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Factory::GetMaxSurfaceSize(gfxPlatform::GetPlatform()->GetContentBackendFor(LayersBackend::LAYERS_BASIC));
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}
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BasicCompositor::~BasicCompositor()
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{
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MOZ_COUNT_DTOR(BasicCompositor);
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}
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bool
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BasicCompositor::Initialize()
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{
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return mWidget ? mWidget->InitCompositor(this) : false;
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};
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int32_t
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BasicCompositor::GetMaxTextureSize() const
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{
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return mMaxTextureSize;
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}
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void
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BasicCompositingRenderTarget::BindRenderTarget()
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{
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if (mClearOnBind) {
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mDrawTarget->ClearRect(Rect(0, 0, mSize.width, mSize.height));
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mClearOnBind = false;
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}
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}
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void BasicCompositor::Destroy()
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{
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mWidget->CleanupRemoteDrawing();
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mWidget = nullptr;
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}
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TextureFactoryIdentifier
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BasicCompositor::GetTextureFactoryIdentifier()
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{
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TextureFactoryIdentifier ident(LayersBackend::LAYERS_BASIC,
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XRE_GetProcessType(),
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GetMaxTextureSize());
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return ident;
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}
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already_AddRefed<CompositingRenderTarget>
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BasicCompositor::CreateRenderTarget(const IntRect& aRect, SurfaceInitMode aInit)
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{
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MOZ_ASSERT(aRect.width != 0 && aRect.height != 0, "Trying to create a render target of invalid size");
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if (aRect.width * aRect.height == 0) {
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return nullptr;
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}
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RefPtr<DrawTarget> target = mDrawTarget->CreateSimilarDrawTarget(aRect.Size(), SurfaceFormat::B8G8R8A8);
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if (!target) {
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return nullptr;
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}
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RefPtr<BasicCompositingRenderTarget> rt = new BasicCompositingRenderTarget(target, aRect);
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return rt.forget();
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}
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already_AddRefed<CompositingRenderTarget>
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BasicCompositor::CreateRenderTargetFromSource(const IntRect &aRect,
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const CompositingRenderTarget *aSource,
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const IntPoint &aSourcePoint)
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{
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MOZ_CRASH("GFX: Shouldn't be called!");
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return nullptr;
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}
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already_AddRefed<CompositingRenderTarget>
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BasicCompositor::CreateRenderTargetForWindow(const LayoutDeviceIntRect& aRect, SurfaceInitMode aInit, BufferMode aBufferMode)
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{
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MOZ_ASSERT(mDrawTarget);
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MOZ_ASSERT(aRect.width != 0 && aRect.height != 0, "Trying to create a render target of invalid size");
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if (aRect.width * aRect.height == 0) {
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return nullptr;
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}
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RefPtr<BasicCompositingRenderTarget> rt;
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IntRect rect = aRect.ToUnknownRect();
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if (aBufferMode != BufferMode::BUFFER_NONE) {
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RefPtr<DrawTarget> target = mWidget->CreateBackBufferDrawTarget(mDrawTarget, aRect, aInit == INIT_MODE_CLEAR);
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if (!target) {
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return nullptr;
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}
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rt = new BasicCompositingRenderTarget(target, rect);
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} else {
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IntRect windowRect = rect;
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// Adjust bounds rect to account for new origin at (0, 0).
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if (windowRect.Size() != mDrawTarget->GetSize()) {
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windowRect.ExpandToEnclose(IntPoint(0, 0));
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}
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rt = new BasicCompositingRenderTarget(mDrawTarget, windowRect);
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if (aInit == INIT_MODE_CLEAR) {
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mDrawTarget->ClearRect(Rect(rect - rt->GetOrigin()));
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}
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}
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return rt.forget();
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}
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already_AddRefed<DataTextureSource>
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BasicCompositor::CreateDataTextureSource(TextureFlags aFlags)
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{
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RefPtr<DataTextureSource> result = new DataTextureSourceBasic(nullptr);
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return result.forget();
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}
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already_AddRefed<DataTextureSource>
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BasicCompositor::CreateDataTextureSourceAround(DataSourceSurface* aSurface)
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{
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RefPtr<DataTextureSource> result = new DataTextureSourceBasic(aSurface);
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return result.forget();
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}
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bool
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BasicCompositor::SupportsEffect(EffectTypes aEffect)
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{
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return aEffect != EffectTypes::YCBCR && aEffect != EffectTypes::COMPONENT_ALPHA;
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}
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static void
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DrawSurfaceWithTextureCoords(DrawTarget *aDest,
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const gfx::Rect& aDestRect,
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SourceSurface *aSource,
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const gfx::Rect& aTextureCoords,
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gfx::Filter aFilter,
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const DrawOptions& aOptions,
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SourceSurface *aMask,
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const Matrix* aMaskTransform)
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{
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if (!aSource) {
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gfxWarning() << "DrawSurfaceWithTextureCoords problem " << gfx::hexa(aSource) << " and " << gfx::hexa(aMask);
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return;
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}
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// Convert aTextureCoords into aSource's coordinate space
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gfxRect sourceRect(aTextureCoords.x * aSource->GetSize().width,
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aTextureCoords.y * aSource->GetSize().height,
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aTextureCoords.width * aSource->GetSize().width,
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aTextureCoords.height * aSource->GetSize().height);
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// Floating point error can accumulate above and we know our visible region
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// is integer-aligned, so round it out.
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sourceRect.Round();
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// Compute a transform that maps sourceRect to aDestRect.
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Matrix matrix =
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gfxUtils::TransformRectToRect(sourceRect,
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gfx::IntPoint(aDestRect.x, aDestRect.y),
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gfx::IntPoint(aDestRect.XMost(), aDestRect.y),
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gfx::IntPoint(aDestRect.XMost(), aDestRect.YMost()));
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// Only use REPEAT if aTextureCoords is outside (0, 0, 1, 1).
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gfx::Rect unitRect(0, 0, 1, 1);
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ExtendMode mode = unitRect.Contains(aTextureCoords) ? ExtendMode::CLAMP : ExtendMode::REPEAT;
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FillRectWithMask(aDest, aDestRect, aSource, aFilter, aOptions,
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mode, aMask, aMaskTransform, &matrix);
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}
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static void
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SetupMask(const EffectChain& aEffectChain,
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DrawTarget* aDest,
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const IntPoint& aOffset,
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RefPtr<SourceSurface>& aMaskSurface,
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Matrix& aMaskTransform)
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{
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if (aEffectChain.mSecondaryEffects[EffectTypes::MASK]) {
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EffectMask *effectMask = static_cast<EffectMask*>(aEffectChain.mSecondaryEffects[EffectTypes::MASK].get());
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aMaskSurface = effectMask->mMaskTexture->AsSourceBasic()->GetSurface(aDest);
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if (!aMaskSurface) {
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gfxWarning() << "Invalid sourceMask effect";
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}
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MOZ_ASSERT(effectMask->mMaskTransform.Is2D(), "How did we end up with a 3D transform here?!");
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aMaskTransform = effectMask->mMaskTransform.As2D();
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aMaskTransform.PostTranslate(-aOffset.x, -aOffset.y);
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}
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}
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void
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BasicCompositor::DrawQuad(const gfx::Rect& aRect,
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const gfx::Rect& aClipRect,
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const EffectChain &aEffectChain,
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gfx::Float aOpacity,
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const gfx::Matrix4x4& aTransform,
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const gfx::Rect& aVisibleRect)
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{
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RefPtr<DrawTarget> buffer = mRenderTarget->mDrawTarget;
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// For 2D drawing, |dest| and |buffer| are the same surface. For 3D drawing,
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// |dest| is a temporary surface.
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RefPtr<DrawTarget> dest = buffer;
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AutoRestoreTransform autoRestoreTransform(dest);
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Matrix newTransform;
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Rect transformBounds;
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Matrix4x4 new3DTransform;
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IntPoint offset = mRenderTarget->GetOrigin();
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if (aTransform.Is2D()) {
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newTransform = aTransform.As2D();
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} else {
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// Create a temporary surface for the transform.
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dest = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(RoundedOut(aRect).Size(), SurfaceFormat::B8G8R8A8);
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if (!dest) {
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return;
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}
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dest->SetTransform(Matrix::Translation(-aRect.x, -aRect.y));
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// Get the bounds post-transform.
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transformBounds = aTransform.TransformAndClipBounds(aRect, Rect(offset.x, offset.y, buffer->GetSize().width, buffer->GetSize().height));
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transformBounds.RoundOut();
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if (transformBounds.IsEmpty()) {
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return;
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}
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newTransform = Matrix();
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// When we apply the 3D transformation, we do it against a temporary
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// surface, so undo the coordinate offset.
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new3DTransform = aTransform;
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new3DTransform.PreTranslate(aRect.x, aRect.y, 0);
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}
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buffer->PushClipRect(aClipRect);
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newTransform.PostTranslate(-offset.x, -offset.y);
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buffer->SetTransform(newTransform);
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RefPtr<SourceSurface> sourceMask;
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Matrix maskTransform;
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if (aTransform.Is2D()) {
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SetupMask(aEffectChain, dest, offset, sourceMask, maskTransform);
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}
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CompositionOp blendMode = CompositionOp::OP_OVER;
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if (Effect* effect = aEffectChain.mSecondaryEffects[EffectTypes::BLEND_MODE].get()) {
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blendMode = static_cast<EffectBlendMode*>(effect)->mBlendMode;
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}
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switch (aEffectChain.mPrimaryEffect->mType) {
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case EffectTypes::SOLID_COLOR: {
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EffectSolidColor* effectSolidColor =
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static_cast<EffectSolidColor*>(aEffectChain.mPrimaryEffect.get());
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bool unboundedOp = !IsOperatorBoundByMask(blendMode);
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if (unboundedOp) {
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dest->PushClipRect(aRect);
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}
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FillRectWithMask(dest, aRect, effectSolidColor->mColor,
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DrawOptions(aOpacity, blendMode), sourceMask, &maskTransform);
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if (unboundedOp) {
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dest->PopClip();
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}
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break;
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}
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case EffectTypes::RGB: {
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TexturedEffect* texturedEffect =
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static_cast<TexturedEffect*>(aEffectChain.mPrimaryEffect.get());
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TextureSourceBasic* source = texturedEffect->mTexture->AsSourceBasic();
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if (source && texturedEffect->mPremultiplied) {
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DrawSurfaceWithTextureCoords(dest, aRect,
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source->GetSurface(dest),
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texturedEffect->mTextureCoords,
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texturedEffect->mFilter,
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DrawOptions(aOpacity, blendMode),
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sourceMask, &maskTransform);
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} else if (source) {
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SourceSurface* srcSurf = source->GetSurface(dest);
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if (srcSurf) {
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RefPtr<DataSourceSurface> srcData = srcSurf->GetDataSurface();
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// Yes, we re-create the premultiplied data every time.
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// This might be better with a cache, eventually.
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RefPtr<DataSourceSurface> premultData = gfxUtils::CreatePremultipliedDataSurface(srcData);
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DrawSurfaceWithTextureCoords(dest, aRect,
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premultData,
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texturedEffect->mTextureCoords,
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texturedEffect->mFilter,
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DrawOptions(aOpacity, blendMode),
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sourceMask, &maskTransform);
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}
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} else {
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gfxDevCrash(LogReason::IncompatibleBasicTexturedEffect) << "Bad for basic with " << texturedEffect->mTexture->Name() << " and " << gfx::hexa(sourceMask);
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}
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break;
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}
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case EffectTypes::YCBCR: {
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NS_RUNTIMEABORT("Can't (easily) support component alpha with BasicCompositor!");
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break;
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}
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case EffectTypes::RENDER_TARGET: {
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EffectRenderTarget* effectRenderTarget =
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static_cast<EffectRenderTarget*>(aEffectChain.mPrimaryEffect.get());
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RefPtr<BasicCompositingRenderTarget> surface
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= static_cast<BasicCompositingRenderTarget*>(effectRenderTarget->mRenderTarget.get());
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RefPtr<SourceSurface> sourceSurf = surface->mDrawTarget->Snapshot();
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DrawSurfaceWithTextureCoords(dest, aRect,
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sourceSurf,
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effectRenderTarget->mTextureCoords,
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effectRenderTarget->mFilter,
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DrawOptions(aOpacity, blendMode),
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sourceMask, &maskTransform);
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break;
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}
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case EffectTypes::COMPONENT_ALPHA: {
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NS_RUNTIMEABORT("Can't (easily) support component alpha with BasicCompositor!");
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break;
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}
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default: {
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NS_RUNTIMEABORT("Invalid effect type!");
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break;
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}
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}
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if (!aTransform.Is2D()) {
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dest->Flush();
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RefPtr<SourceSurface> destSnapshot = dest->Snapshot();
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SetupMask(aEffectChain, buffer, offset, sourceMask, maskTransform);
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if (sourceMask) {
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RefPtr<DrawTarget> transformDT =
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dest->CreateSimilarDrawTarget(IntSize(transformBounds.width, transformBounds.height),
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SurfaceFormat::B8G8R8A8);
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new3DTransform.PostTranslate(-transformBounds.x, -transformBounds.y, 0);
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if (transformDT &&
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transformDT->Draw3DTransformedSurface(destSnapshot, new3DTransform)) {
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RefPtr<SourceSurface> transformSnapshot = transformDT->Snapshot();
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// Transform the source by it's normal transform, and then the inverse
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// of the mask transform so that it's in the mask's untransformed
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// coordinate space.
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Matrix sourceTransform = newTransform;
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sourceTransform.PostTranslate(transformBounds.TopLeft());
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Matrix inverseMask = maskTransform;
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inverseMask.Invert();
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sourceTransform *= inverseMask;
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SurfacePattern source(transformSnapshot, ExtendMode::CLAMP, sourceTransform);
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buffer->PushClipRect(transformBounds);
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// Mask in the untransformed coordinate space, and then transform
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// by the mask transform to put the result back into destination
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// coords.
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buffer->SetTransform(maskTransform);
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buffer->MaskSurface(source, sourceMask, Point(0, 0));
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buffer->PopClip();
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}
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} else {
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buffer->Draw3DTransformedSurface(destSnapshot, new3DTransform);
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}
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}
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buffer->PopClip();
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}
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void
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BasicCompositor::ClearRect(const gfx::Rect& aRect)
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{
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mRenderTarget->mDrawTarget->ClearRect(aRect);
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}
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void
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BasicCompositor::BeginFrame(const nsIntRegion& aInvalidRegion,
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const gfx::Rect *aClipRectIn,
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const gfx::Rect& aRenderBounds,
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bool aOpaque,
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gfx::Rect *aClipRectOut /* = nullptr */,
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gfx::Rect *aRenderBoundsOut /* = nullptr */)
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{
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LayoutDeviceIntRect intRect(LayoutDeviceIntPoint(), mWidget->GetClientSize());
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Rect rect = Rect(0, 0, intRect.width, intRect.height);
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LayoutDeviceIntRegion invalidRegionSafe;
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if (mDidExternalComposition) {
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// We do not know rendered region during external composition, just redraw
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// whole widget.
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invalidRegionSafe = intRect;
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mDidExternalComposition = false;
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} else {
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// Sometimes the invalid region is larger than we want to draw.
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invalidRegionSafe.And(
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LayoutDeviceIntRegion::FromUnknownRegion(aInvalidRegion), intRect);
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}
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mInvalidRegion = invalidRegionSafe;
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mInvalidRect = mInvalidRegion.GetBounds();
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if (aRenderBoundsOut) {
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*aRenderBoundsOut = Rect();
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}
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BufferMode bufferMode = BufferMode::BUFFERED;
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if (mTarget) {
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// If we have a copy target, then we don't have a widget-provided mDrawTarget (currently). Use a dummy
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// placeholder so that CreateRenderTarget() works.
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mDrawTarget = gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget();
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} else {
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// StartRemoteDrawingInRegion can mutate mInvalidRegion.
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mDrawTarget = mWidget->StartRemoteDrawingInRegion(mInvalidRegion, &bufferMode);
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if (!mDrawTarget) {
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return;
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}
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mInvalidRect = mInvalidRegion.GetBounds();
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if (mInvalidRect.IsEmpty()) {
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mWidget->EndRemoteDrawingInRegion(mDrawTarget, mInvalidRegion);
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return;
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}
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}
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if (!mDrawTarget || mInvalidRect.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
// Setup an intermediate render target to buffer all compositing. We will
|
|
// copy this into mDrawTarget (the widget), and/or mTarget in EndFrame()
|
|
RefPtr<CompositingRenderTarget> target =
|
|
CreateRenderTargetForWindow(mInvalidRect,
|
|
aOpaque ? INIT_MODE_NONE : INIT_MODE_CLEAR,
|
|
bufferMode);
|
|
if (!target) {
|
|
if (!mTarget) {
|
|
mWidget->EndRemoteDrawingInRegion(mDrawTarget, mInvalidRegion);
|
|
}
|
|
return;
|
|
}
|
|
SetRenderTarget(target);
|
|
|
|
// We only allocate a surface sized to the invalidated region, so we need to
|
|
// translate future coordinates.
|
|
mRenderTarget->mDrawTarget->SetTransform(Matrix::Translation(-mRenderTarget->GetOrigin()));
|
|
|
|
gfxUtils::ClipToRegion(mRenderTarget->mDrawTarget,
|
|
mInvalidRegion.ToUnknownRegion());
|
|
|
|
if (aRenderBoundsOut) {
|
|
*aRenderBoundsOut = rect;
|
|
}
|
|
|
|
if (aClipRectIn) {
|
|
mRenderTarget->mDrawTarget->PushClipRect(*aClipRectIn);
|
|
} else {
|
|
mRenderTarget->mDrawTarget->PushClipRect(rect);
|
|
if (aClipRectOut) {
|
|
*aClipRectOut = rect;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
BasicCompositor::EndFrame()
|
|
{
|
|
// Pop aClipRectIn/bounds rect
|
|
mRenderTarget->mDrawTarget->PopClip();
|
|
|
|
if (gfxPrefs::WidgetUpdateFlashing()) {
|
|
float r = float(rand()) / RAND_MAX;
|
|
float g = float(rand()) / RAND_MAX;
|
|
float b = float(rand()) / RAND_MAX;
|
|
// We're still clipped to mInvalidRegion, so just fill the bounds.
|
|
mRenderTarget->mDrawTarget->FillRect(
|
|
IntRectToRect(mInvalidRegion.GetBounds()).ToUnknownRect(),
|
|
ColorPattern(Color(r, g, b, 0.2f)));
|
|
}
|
|
|
|
// Pop aInvalidregion
|
|
mRenderTarget->mDrawTarget->PopClip();
|
|
|
|
if (mTarget || mRenderTarget->mDrawTarget != mDrawTarget) {
|
|
// Note: Most platforms require us to buffer drawing to the widget surface.
|
|
// That's why we don't draw to mDrawTarget directly.
|
|
RefPtr<SourceSurface> source = mRenderTarget->mDrawTarget->Snapshot();
|
|
RefPtr<DrawTarget> dest(mTarget ? mTarget : mDrawTarget);
|
|
|
|
nsIntPoint offset = mTarget ? mTargetBounds.TopLeft() : nsIntPoint();
|
|
|
|
// The source DrawTarget is clipped to the invalidation region, so we have
|
|
// to copy the individual rectangles in the region or else we'll draw blank
|
|
// pixels.
|
|
for (auto iter = mInvalidRegion.RectIter(); !iter.Done(); iter.Next()) {
|
|
const LayoutDeviceIntRect& r = iter.Get();
|
|
dest->CopySurface(source,
|
|
IntRect(r.x, r.y, r.width, r.height) - mRenderTarget->GetOrigin(),
|
|
IntPoint(r.x, r.y) - offset);
|
|
}
|
|
}
|
|
|
|
if (!mTarget) {
|
|
mWidget->EndRemoteDrawingInRegion(mDrawTarget, mInvalidRegion);
|
|
}
|
|
|
|
mDrawTarget = nullptr;
|
|
mRenderTarget = nullptr;
|
|
}
|
|
|
|
void
|
|
BasicCompositor::EndFrameForExternalComposition(const gfx::Matrix& aTransform)
|
|
{
|
|
MOZ_ASSERT(!mTarget);
|
|
MOZ_ASSERT(!mDrawTarget);
|
|
MOZ_ASSERT(!mRenderTarget);
|
|
|
|
mDidExternalComposition = true;
|
|
}
|
|
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|