static void
DrawSurfaceWithTextureCoords(DrawTarget *aDest,
const gfx::Rect& aDestRect,
SourceSurface *aSource,
const gfx::Rect& aTextureCoords,
gfx::Filter aFilter,
const DrawOptions& aOptions,
SourceSurface *aMask,
const Matrix* aMaskTransform)
{
if (!aSource) {
gfxWarning() << "DrawSurfaceWithTextureCoords problem " << gfx::hexa(aSource) << " and " << gfx::hexa(aMask);
return;
}
// Convert aTextureCoords into aSource's coordinate space
gfxRect sourceRect(aTextureCoords.x * aSource->GetSize().width,
aTextureCoords.y * aSource->GetSize().height,
aTextureCoords.width * aSource->GetSize().width,
aTextureCoords.height * aSource->GetSize().height);
// Floating point error can accumulate above and we know our visible region
// is integer-aligned, so round it out.
sourceRect.Round();
// Compute a transform that maps sourceRect to aDestRect.
Matrix matrix =
gfxUtils::TransformRectToRect(sourceRect,
gfx::IntPoint(aDestRect.x, aDestRect.y),
gfx::IntPoint(aDestRect.XMost(), aDestRect.y),
gfx::IntPoint(aDestRect.XMost(), aDestRect.YMost()));
// Only use REPEAT if aTextureCoords is outside (0, 0, 1, 1).
gfx::Rect unitRect(0, 0, 1, 1);
ExtendMode mode = unitRect.Contains(aTextureCoords) ? ExtendMode::CLAMP : ExtendMode::REPEAT;
FillRectWithMask(aDest, aDestRect, aSource, aFilter, aOptions,
mode, aMask, aMaskTransform, &matrix);
}
void
BasicCanvasLayer::Paint(DrawTarget* aDT,
const Point& aDeviceOffset,
Layer* aMaskLayer)
{
if (IsHidden())
return;
if (IsDirty()) {
Painted();
FirePreTransactionCallback();
UpdateTarget();
FireDidTransactionCallback();
}
if (!mSurface) {
return;
}
Matrix oldTM;
if (mNeedsYFlip) {
oldTM = aDT->GetTransform();
aDT->SetTransform(Matrix(oldTM).
PreTranslate(0.0f, mBounds.height).
PreScale(1.0f, -1.0f));
}
FillRectWithMask(aDT, aDeviceOffset,
Rect(0, 0, mBounds.width, mBounds.height),
mSurface, ToFilter(mFilter),
DrawOptions(GetEffectiveOpacity(), GetEffectiveOperator(this)),
aMaskLayer);
if (mNeedsYFlip) {
aDT->SetTransform(oldTM);
}
}
void
BasicCompositor::DrawQuad(const gfx::Rect& aRect,
const gfx::Rect& aClipRect,
const EffectChain &aEffectChain,
gfx::Float aOpacity,
const gfx::Matrix4x4& aTransform,
const gfx::Rect& aVisibleRect)
{
RefPtr<DrawTarget> buffer = mRenderTarget->mDrawTarget;
// For 2D drawing, |dest| and |buffer| are the same surface. For 3D drawing,
// |dest| is a temporary surface.
RefPtr<DrawTarget> dest = buffer;
buffer->PushClipRect(aClipRect);
AutoRestoreTransform autoRestoreTransform(dest);
Matrix newTransform;
Rect transformBounds;
gfx3DMatrix new3DTransform;
IntPoint offset = mRenderTarget->GetOrigin();
if (aTransform.Is2D()) {
newTransform = aTransform.As2D();
} else {
// Create a temporary surface for the transform.
dest = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(RoundOut(aRect).Size(), SurfaceFormat::B8G8R8A8);
if (!dest) {
return;
}
dest->SetTransform(Matrix::Translation(-aRect.x, -aRect.y));
// Get the bounds post-transform.
new3DTransform = To3DMatrix(aTransform);
gfxRect bounds = new3DTransform.TransformBounds(ThebesRect(aRect));
bounds.IntersectRect(bounds, gfxRect(offset.x, offset.y, buffer->GetSize().width, buffer->GetSize().height));
transformBounds = ToRect(bounds);
transformBounds.RoundOut();
// Propagate the coordinate offset to our 2D draw target.
newTransform = Matrix::Translation(transformBounds.x, transformBounds.y);
// When we apply the 3D transformation, we do it against a temporary
// surface, so undo the coordinate offset.
new3DTransform = gfx3DMatrix::Translation(aRect.x, aRect.y, 0) * new3DTransform;
}
newTransform.PostTranslate(-offset.x, -offset.y);
buffer->SetTransform(newTransform);
RefPtr<SourceSurface> sourceMask;
Matrix maskTransform;
if (aEffectChain.mSecondaryEffects[EffectTypes::MASK]) {
EffectMask *effectMask = static_cast<EffectMask*>(aEffectChain.mSecondaryEffects[EffectTypes::MASK].get());
sourceMask = effectMask->mMaskTexture->AsSourceBasic()->GetSurface(dest);
MOZ_ASSERT(effectMask->mMaskTransform.Is2D(), "How did we end up with a 3D transform here?!");
MOZ_ASSERT(!effectMask->mIs3D);
maskTransform = effectMask->mMaskTransform.As2D();
maskTransform.PreTranslate(-offset.x, -offset.y);
}
switch (aEffectChain.mPrimaryEffect->mType) {
case EffectTypes::SOLID_COLOR: {
EffectSolidColor* effectSolidColor =
static_cast<EffectSolidColor*>(aEffectChain.mPrimaryEffect.get());
FillRectWithMask(dest, aRect, effectSolidColor->mColor,
DrawOptions(aOpacity), sourceMask, &maskTransform);
break;
}
case EffectTypes::RGB: {
TexturedEffect* texturedEffect =
static_cast<TexturedEffect*>(aEffectChain.mPrimaryEffect.get());
TextureSourceBasic* source = texturedEffect->mTexture->AsSourceBasic();
if (texturedEffect->mPremultiplied) {
DrawSurfaceWithTextureCoords(dest, aRect,
source->GetSurface(dest),
texturedEffect->mTextureCoords,
texturedEffect->mFilter,
aOpacity, sourceMask, &maskTransform);
} else {
RefPtr<DataSourceSurface> srcData = source->GetSurface(dest)->GetDataSurface();
// Yes, we re-create the premultiplied data every time.
// This might be better with a cache, eventually.
RefPtr<DataSourceSurface> premultData = gfxUtils::CreatePremultipliedDataSurface(srcData);
DrawSurfaceWithTextureCoords(dest, aRect,
premultData,
texturedEffect->mTextureCoords,
texturedEffect->mFilter,
aOpacity, sourceMask, &maskTransform);
}
break;
}
case EffectTypes::YCBCR: {
NS_RUNTIMEABORT("Can't (easily) support component alpha with BasicCompositor!");
break;
}
case EffectTypes::RENDER_TARGET: {
EffectRenderTarget* effectRenderTarget =
static_cast<EffectRenderTarget*>(aEffectChain.mPrimaryEffect.get());
RefPtr<BasicCompositingRenderTarget> surface
= static_cast<BasicCompositingRenderTarget*>(effectRenderTarget->mRenderTarget.get());
RefPtr<SourceSurface> sourceSurf = surface->mDrawTarget->Snapshot();
DrawSurfaceWithTextureCoords(dest, aRect,
sourceSurf,
effectRenderTarget->mTextureCoords,
effectRenderTarget->mFilter,
aOpacity, sourceMask, &maskTransform);
break;
}
case EffectTypes::COMPONENT_ALPHA: {
NS_RUNTIMEABORT("Can't (easily) support component alpha with BasicCompositor!");
break;
}
default: {
NS_RUNTIMEABORT("Invalid effect type!");
break;
}
}
if (!aTransform.Is2D()) {
dest->Flush();
RefPtr<SourceSurface> snapshot = dest->Snapshot();
RefPtr<DataSourceSurface> source = snapshot->GetDataSurface();
RefPtr<DataSourceSurface> temp =
Factory::CreateDataSourceSurface(RoundOut(transformBounds).Size(), SurfaceFormat::B8G8R8A8
#ifdef MOZ_ENABLE_SKIA
, true
#endif
);
if (NS_WARN_IF(!temp)) {
buffer->PopClip();
return;
}
Transform(temp, source, new3DTransform, transformBounds.TopLeft());
transformBounds.MoveTo(0, 0);
buffer->DrawSurface(temp, transformBounds, transformBounds);
}
buffer->PopClip();
}