void
ThebesLayerComposite::RenderLayer(const nsIntRect& aClipRect)
{
if (!mBuffer || !mBuffer->IsAttached()) {
return;
}
PROFILER_LABEL("ThebesLayerComposite", "RenderLayer",
js::ProfileEntry::Category::GRAPHICS);
MOZ_ASSERT(mBuffer->GetCompositor() == mCompositeManager->GetCompositor() &&
mBuffer->GetLayer() == this,
"buffer is corrupted");
gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting) {
RefPtr<gfx::DataSourceSurface> surf = mBuffer->GetAsSurface();
if (surf) {
WriteSnapshotToDumpFile(this, surf);
}
}
#endif
EffectChain effectChain(this);
LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
AddBlendModeEffect(effectChain);
const nsIntRegion& visibleRegion = GetEffectiveVisibleRegion();
TiledLayerProperties tiledLayerProps;
if (mRequiresTiledProperties) {
tiledLayerProps.mVisibleRegion = visibleRegion;
tiledLayerProps.mEffectiveResolution = GetEffectiveResolution();
tiledLayerProps.mValidRegion = mValidRegion;
}
mBuffer->SetPaintWillResample(MayResample());
mBuffer->Composite(effectChain,
GetEffectiveOpacity(),
GetEffectiveTransform(),
gfx::Filter::LINEAR,
clipRect,
&visibleRegion,
mRequiresTiledProperties ? &tiledLayerProps
: nullptr);
mBuffer->BumpFlashCounter();
if (mRequiresTiledProperties) {
mValidRegion = tiledLayerProps.mValidRegion;
}
mCompositeManager->GetCompositor()->MakeCurrent();
}
void
LayerManagerComposite::PopGroupForLayerEffects(RefPtr<CompositingRenderTarget> aPreviousTarget,
IntRect aClipRect,
bool aGrayscaleEffect,
bool aInvertEffect,
float aContrastEffect)
{
MOZ_ASSERT(mTwoPassTmpTarget);
// This is currently true, so just making sure that any new use of this
// method is flagged for investigation
MOZ_ASSERT(aInvertEffect || aGrayscaleEffect || aContrastEffect != 0.0);
mCompositor->SetRenderTarget(aPreviousTarget);
EffectChain effectChain(RootLayer());
Matrix5x4 effectMatrix;
if (aGrayscaleEffect) {
// R' = G' = B' = luminance
// R' = 0.2126*R + 0.7152*G + 0.0722*B
// G' = 0.2126*R + 0.7152*G + 0.0722*B
// B' = 0.2126*R + 0.7152*G + 0.0722*B
Matrix5x4 grayscaleMatrix(0.2126f, 0.2126f, 0.2126f, 0,
0.7152f, 0.7152f, 0.7152f, 0,
0.0722f, 0.0722f, 0.0722f, 0,
0, 0, 0, 1,
0, 0, 0, 0);
effectMatrix = grayscaleMatrix;
}
if (aInvertEffect) {
// R' = 1 - R
// G' = 1 - G
// B' = 1 - B
Matrix5x4 colorInvertMatrix(-1, 0, 0, 0,
0, -1, 0, 0,
0, 0, -1, 0,
0, 0, 0, 1,
1, 1, 1, 0);
effectMatrix = effectMatrix * colorInvertMatrix;
}
if (aContrastEffect != 0.0) {
// Multiplying with:
// R' = (1 + c) * (R - 0.5) + 0.5
// G' = (1 + c) * (G - 0.5) + 0.5
// B' = (1 + c) * (B - 0.5) + 0.5
float cP1 = aContrastEffect + 1;
float hc = 0.5*aContrastEffect;
Matrix5x4 contrastMatrix( cP1, 0, 0, 0,
0, cP1, 0, 0,
0, 0, cP1, 0,
0, 0, 0, 1,
-hc, -hc, -hc, 0);
effectMatrix = effectMatrix * contrastMatrix;
}
effectChain.mPrimaryEffect = new EffectRenderTarget(mTwoPassTmpTarget);
effectChain.mSecondaryEffects[EffectTypes::COLOR_MATRIX] = new EffectColorMatrix(effectMatrix);
gfx::Rect clipRectF(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
mCompositor->DrawQuad(Rect(Point(0, 0), Size(mTwoPassTmpTarget->GetSize())), clipRectF, effectChain, 1.,
Matrix4x4());
}
