bool
ShareableCanvasRenderer::UpdateTarget(DrawTarget* aDestTarget)
{
MOZ_ASSERT(aDestTarget);
if (!aDestTarget) {
return false;
}
RefPtr<SourceSurface> surface;
if (!mGLContext) {
AutoReturnSnapshot autoReturn;
if (mAsyncRenderer) {
surface = mAsyncRenderer->GetSurface();
} else if (mBufferProvider) {
surface = mBufferProvider->BorrowSnapshot();
autoReturn.mSnapshot = &surface;
autoReturn.mBufferProvider = mBufferProvider;
}
MOZ_ASSERT(surface);
if (!surface) {
return false;
}
aDestTarget->CopySurface(surface,
IntRect(0, 0, mSize.width, mSize.height),
IntPoint(0, 0));
return true;
}
gl::SharedSurface* frontbuffer = nullptr;
if (mGLFrontbuffer) {
frontbuffer = mGLFrontbuffer.get();
} else {
gl::GLScreenBuffer* screen = mGLContext->Screen();
const auto& front = screen->Front();
if (front) {
frontbuffer = front->Surf();
}
}
if (!frontbuffer) {
NS_WARNING("Null frame received.");
return false;
}
IntSize readSize(frontbuffer->mSize);
SurfaceFormat format =
mOpaque ? SurfaceFormat::B8G8R8X8 : SurfaceFormat::B8G8R8A8;
bool needsPremult = frontbuffer->mHasAlpha && !mIsAlphaPremultiplied;
// Try to read back directly into aDestTarget's output buffer
uint8_t* destData;
IntSize destSize;
int32_t destStride;
SurfaceFormat destFormat;
if (aDestTarget->LockBits(&destData, &destSize, &destStride, &destFormat)) {
if (destSize == readSize && destFormat == format) {
RefPtr<DataSourceSurface> data =
Factory::CreateWrappingDataSourceSurface(destData, destStride, destSize, destFormat);
if (!mGLContext->Readback(frontbuffer, data)) {
aDestTarget->ReleaseBits(destData);
return false;
}
if (needsPremult) {
gfxUtils::PremultiplyDataSurface(data, data);
}
aDestTarget->ReleaseBits(destData);
return true;
}
aDestTarget->ReleaseBits(destData);
}
RefPtr<DataSourceSurface> resultSurf = GetTempSurface(readSize, format);
// There will already be a warning from inside of GetTempSurface, but
// it doesn't hurt to complain:
if (NS_WARN_IF(!resultSurf)) {
return false;
}
// Readback handles Flush/MarkDirty.
if (!mGLContext->Readback(frontbuffer, resultSurf)) {
return false;
}
if (needsPremult) {
gfxUtils::PremultiplyDataSurface(resultSurf, resultSurf);
}
aDestTarget->CopySurface(resultSurf,
IntRect(0, 0, readSize.width, readSize.height),
IntPoint(0, 0));
return true;
}
void
CopyableCanvasLayer::UpdateSurface(gfxASurface* aDestSurface, Layer* aMaskLayer)
{
if (!IsDirty())
return;
Painted();
if (mDrawTarget) {
mDrawTarget->Flush();
if (mDrawTarget->GetType() == BACKEND_COREGRAPHICS_ACCELERATED) {
// We have an accelerated CG context which has changed, unlike a bitmap surface
// where we can alias the bits on initializing the mDrawTarget, we need to readback
// and copy the accelerated surface each frame. We want to support this for quick
// thumbnail but if we're going to be doing this every frame it likely is better
// to use a non accelerated (bitmap) canvas.
mSurface = gfxPlatform::GetPlatform()->GetThebesSurfaceForDrawTarget(mDrawTarget);
}
}
if (!mGLContext && aDestSurface) {
nsRefPtr<gfxContext> tmpCtx = new gfxContext(aDestSurface);
tmpCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
CopyableCanvasLayer::PaintWithOpacity(tmpCtx, 1.0f, aMaskLayer);
return;
}
if (mGLContext) {
if (aDestSurface && aDestSurface->GetType() != gfxASurface::SurfaceTypeImage) {
MOZ_ASSERT(false, "Destination surface must be ImageSurface type.");
return;
}
nsRefPtr<gfxImageSurface> readSurf;
nsRefPtr<gfxImageSurface> resultSurf;
SharedSurface* sharedSurf = mGLContext->RequestFrame();
if (!sharedSurf) {
NS_WARNING("Null frame received.");
return;
}
gfxIntSize readSize(sharedSurf->Size());
gfxImageFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? gfxASurface::ImageFormatRGB24
: gfxASurface::ImageFormatARGB32;
if (aDestSurface) {
resultSurf = static_cast<gfxImageSurface*>(aDestSurface);
} else {
resultSurf = GetTempSurface(readSize, format);
}
MOZ_ASSERT(resultSurf);
if (resultSurf->CairoStatus() != 0) {
MOZ_ASSERT(false, "Bad resultSurf->CairoStatus().");
return;
}
MOZ_ASSERT(sharedSurf->APIType() == APITypeT::OpenGL);
SharedSurface_GL* surfGL = SharedSurface_GL::Cast(sharedSurf);
if (surfGL->Type() == SharedSurfaceType::Basic) {
SharedSurface_Basic* sharedSurf_Basic = SharedSurface_Basic::Cast(surfGL);
readSurf = sharedSurf_Basic->GetData();
} else {
if (resultSurf->Format() == format &&
resultSurf->GetSize() == readSize)
{
readSurf = resultSurf;
} else {
readSurf = GetTempSurface(readSize, format);
}
// Readback handles Flush/MarkDirty.
mGLContext->Screen()->Readback(surfGL, readSurf);
}
MOZ_ASSERT(readSurf);
bool needsPremult = surfGL->HasAlpha() && !mIsGLAlphaPremult;
if (needsPremult) {
gfxImageSurface* sizedReadSurf = nullptr;
if (readSurf->Format() == resultSurf->Format() &&
readSurf->GetSize() == resultSurf->GetSize())
{
sizedReadSurf = readSurf;
} else {
readSurf->Flush();
nsRefPtr<gfxContext> ctx = new gfxContext(resultSurf);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(readSurf);
ctx->Paint();
sizedReadSurf = resultSurf;
}
MOZ_ASSERT(sizedReadSurf);
readSurf->Flush();
resultSurf->Flush();
gfxUtils::PremultiplyImageSurface(readSurf, resultSurf);
resultSurf->MarkDirty();
} else if (resultSurf != readSurf) {
// Didn't need premult, but we do need to blit to resultSurf
readSurf->Flush();
nsRefPtr<gfxContext> ctx = new gfxContext(resultSurf);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(readSurf);
ctx->Paint();
}
// stick our surface into mSurface, so that the Paint() path is the same
if (!aDestSurface) {
mSurface = resultSurf;
}
}
}
void
CopyableCanvasLayer::UpdateSurface(gfxASurface* aDestSurface, Layer* aMaskLayer)
{
if (!IsDirty())
return;
Painted();
if (mDrawTarget) {
mDrawTarget->Flush();
mSurface = gfxPlatform::GetPlatform()->GetThebesSurfaceForDrawTarget(mDrawTarget);
}
if (!mGLContext && aDestSurface) {
nsRefPtr<gfxContext> tmpCtx = new gfxContext(aDestSurface);
tmpCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
CopyableCanvasLayer::PaintWithOpacity(tmpCtx, 1.0f, aMaskLayer);
return;
}
if (mGLContext) {
if (aDestSurface && aDestSurface->GetType() != gfxASurface::SurfaceTypeImage) {
MOZ_ASSERT(false, "Destination surface must be ImageSurface type.");
return;
}
nsRefPtr<gfxImageSurface> readSurf;
nsRefPtr<gfxImageSurface> resultSurf;
SharedSurface* sharedSurf = mGLContext->RequestFrame();
if (!sharedSurf) {
NS_WARNING("Null frame received.");
return;
}
gfxIntSize readSize(sharedSurf->Size());
gfxImageFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? gfxASurface::ImageFormatRGB24
: gfxASurface::ImageFormatARGB32;
if (aDestSurface) {
resultSurf = static_cast<gfxImageSurface*>(aDestSurface);
} else {
resultSurf = GetTempSurface(readSize, format);
}
MOZ_ASSERT(resultSurf);
if (resultSurf->CairoStatus() != 0) {
MOZ_ASSERT(false, "Bad resultSurf->CairoStatus().");
return;
}
MOZ_ASSERT(sharedSurf->APIType() == APITypeT::OpenGL);
SharedSurface_GL* surfGL = SharedSurface_GL::Cast(sharedSurf);
if (surfGL->Type() == SharedSurfaceType::Basic) {
SharedSurface_Basic* sharedSurf_Basic = SharedSurface_Basic::Cast(surfGL);
readSurf = sharedSurf_Basic->GetData();
} else {
if (resultSurf->Format() == format &&
resultSurf->GetSize() == readSize)
{
readSurf = resultSurf;
} else {
readSurf = GetTempSurface(readSize, format);
}
// Readback handles Flush/MarkDirty.
mGLContext->Screen()->Readback(surfGL, readSurf);
}
MOZ_ASSERT(readSurf);
bool needsPremult = surfGL->HasAlpha() && !mIsGLAlphaPremult;
if (needsPremult) {
gfxImageSurface* sizedReadSurf = nullptr;
if (readSurf->Format() == resultSurf->Format() &&
readSurf->GetSize() == resultSurf->GetSize())
{
sizedReadSurf = readSurf;
} else {
readSurf->Flush();
nsRefPtr<gfxContext> ctx = new gfxContext(resultSurf);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(readSurf);
ctx->Paint();
sizedReadSurf = resultSurf;
}
MOZ_ASSERT(sizedReadSurf);
readSurf->Flush();
resultSurf->Flush();
gfxUtils::PremultiplyImageSurface(readSurf, resultSurf);
resultSurf->MarkDirty();
} else if (resultSurf != readSurf) {
// Didn't need premult, but we do need to blit to resultSurf
readSurf->Flush();
nsRefPtr<gfxContext> ctx = new gfxContext(resultSurf);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(readSurf);
ctx->Paint();
}
// stick our surface into mSurface, so that the Paint() path is the same
if (!aDestSurface) {
mSurface = resultSurf;
}
}
}
void
CopyableCanvasLayer::UpdateSurface(gfxASurface* aDestSurface, Layer* aMaskLayer)
{
if (!IsDirty())
return;
Painted();
if (mDrawTarget) {
mDrawTarget->Flush();
mSurface =
gfxPlatform::GetPlatform()->CreateThebesSurfaceAliasForDrawTarget_hack(mDrawTarget);
}
if (!mGLContext && aDestSurface) {
nsRefPtr<gfxContext> tmpCtx = new gfxContext(aDestSurface);
tmpCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
CopyableCanvasLayer::PaintWithOpacity(tmpCtx, 1.0f, aMaskLayer);
return;
}
if (mGLContext) {
nsRefPtr<gfxImageSurface> readSurf;
nsRefPtr<gfxASurface> resultSurf;
SharedSurface* sharedSurf = mGLContext->RequestFrame();
if (!sharedSurf) {
NS_WARNING("Null frame received.");
return;
}
IntSize readSize(ToIntSize(sharedSurf->Size()));
gfxImageFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? gfxImageFormatRGB24
: gfxImageFormatARGB32;
if (aDestSurface) {
resultSurf = aDestSurface;
} else {
resultSurf = GetTempSurface(readSize, format);
}
MOZ_ASSERT(resultSurf);
if (resultSurf->CairoStatus() != 0) {
MOZ_ASSERT(false, "Bad resultSurf->CairoStatus().");
return;
}
MOZ_ASSERT(sharedSurf->APIType() == APITypeT::OpenGL);
SharedSurface_GL* surfGL = SharedSurface_GL::Cast(sharedSurf);
if (surfGL->Type() == SharedSurfaceType::Basic) {
SharedSurface_Basic* sharedSurf_Basic = SharedSurface_Basic::Cast(surfGL);
readSurf = sharedSurf_Basic->GetData();
} else {
if (ToIntSize(resultSurf->GetSize()) != readSize ||
!(readSurf = resultSurf->GetAsImageSurface()) ||
readSurf->Format() != format)
{
readSurf = GetTempSurface(readSize, format);
}
// Readback handles Flush/MarkDirty.
mGLContext->Screen()->Readback(surfGL, readSurf);
}
MOZ_ASSERT(readSurf);
bool needsPremult = surfGL->HasAlpha() && !mIsGLAlphaPremult;
if (needsPremult) {
readSurf->Flush();
gfxUtils::PremultiplyImageSurface(readSurf);
readSurf->MarkDirty();
}
if (readSurf != resultSurf) {
readSurf->Flush();
nsRefPtr<gfxContext> ctx = new gfxContext(resultSurf);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(readSurf);
ctx->Paint();
}
// If !aDestSurface then we will end up painting using mSurface, so
// stick our surface into mSurface, so that the Paint() path is the same.
if (!aDestSurface) {
mSurface = resultSurf;
}
}
}
void
BasicCanvasLayer::UpdateSurface(gfxASurface* aDestSurface, Layer* aMaskLayer)
{
if (!IsDirty())
return;
Painted();
if (mDrawTarget) {
mDrawTarget->Flush();
// TODO Fix me before turning accelerated quartz canvas by default
//mSurface = gfxPlatform::GetPlatform()->GetThebesSurfaceForDrawTarget(mDrawTarget);
}
if (!mGLContext && aDestSurface) {
nsRefPtr<gfxContext> tmpCtx = new gfxContext(aDestSurface);
tmpCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
BasicCanvasLayer::PaintWithOpacity(tmpCtx, 1.0f, aMaskLayer);
return;
}
if (mGLContext) {
if (aDestSurface && aDestSurface->GetType() != gfxASurface::SurfaceTypeImage) {
NS_ASSERTION(aDestSurface->GetType() == gfxASurface::SurfaceTypeImage,
"Destination surface must be ImageSurface type");
return;
}
// We need to read from the GLContext
mGLContext->MakeCurrent();
#if defined (MOZ_X11) && defined (MOZ_EGL_XRENDER_COMPOSITE)
if (!mForceReadback) {
mGLContext->GuaranteeResolve();
gfxASurface* offscreenSurface = mGLContext->GetOffscreenPixmapSurface();
// XRender can only blend premuliplied alpha, so only allow xrender
// path if we have premultiplied alpha or opaque content.
if (offscreenSurface && (mGLBufferIsPremultiplied || (GetContentFlags() & CONTENT_OPAQUE))) {
mSurface = offscreenSurface;
mNeedsYFlip = false;
return;
}
}
#endif
gfxIntSize readSize(mBounds.width, mBounds.height);
gfxImageFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? gfxASurface::ImageFormatRGB24
: gfxASurface::ImageFormatARGB32;
nsRefPtr<gfxImageSurface> readSurf;
nsRefPtr<gfxImageSurface> resultSurf;
bool usingTempSurface = false;
if (aDestSurface) {
resultSurf = static_cast<gfxImageSurface*>(aDestSurface);
if (resultSurf->GetSize() != readSize ||
resultSurf->Stride() != resultSurf->Width() * 4)
{
readSurf = GetTempSurface(readSize, format);
usingTempSurface = true;
}
} else {
resultSurf = GetTempSurface(readSize, format);
usingTempSurface = true;
}
if (!usingTempSurface)
DiscardTempSurface();
if (!readSurf)
readSurf = resultSurf;
if (!resultSurf || resultSurf->CairoStatus() != 0)
return;
MOZ_ASSERT(readSurf);
MOZ_ASSERT(readSurf->Stride() == mBounds.width * 4, "gfxImageSurface stride isn't what we expect!");
// We need to Flush() the surface before modifying it outside of cairo.
readSurf->Flush();
mGLContext->ReadScreenIntoImageSurface(readSurf);
readSurf->MarkDirty();
// If the underlying GLContext doesn't have a framebuffer into which
// premultiplied values were written, we have to do this ourselves here.
// Note that this is a WebGL attribute; GL itself has no knowledge of
// premultiplied or unpremultiplied alpha.
if (!mGLBufferIsPremultiplied)
gfxUtils::PremultiplyImageSurface(readSurf);
if (readSurf != resultSurf) {
MOZ_ASSERT(resultSurf->Width() >= readSurf->Width());
MOZ_ASSERT(resultSurf->Height() >= readSurf->Height());
resultSurf->Flush();
resultSurf->CopyFrom(readSurf);
resultSurf->MarkDirty();
}
// stick our surface into mSurface, so that the Paint() path is the same
if (!aDestSurface) {
mSurface = resultSurf;
}
}
}
void
CopyableCanvasLayer::UpdateTarget(DrawTarget* aDestTarget)
{
if (!IsDirty())
return;
Painted();
if (mDrawTarget) {
mDrawTarget->Flush();
mSurface = mDrawTarget->Snapshot();
}
if (!mGLContext && aDestTarget) {
NS_ASSERTION(mSurface, "Must have surface to draw!");
if (mSurface) {
aDestTarget->CopySurface(mSurface,
IntRect(0, 0, mBounds.width, mBounds.height),
IntPoint(0, 0));
mSurface = nullptr;
}
return;
}
if (mGLContext) {
SharedSurface_GL* sharedSurf = nullptr;
if (mStream) {
sharedSurf = SharedSurface_GL::Cast(mStream->SwapConsumer());
} else {
sharedSurf = mGLContext->RequestFrame();
}
if (!sharedSurf) {
NS_WARNING("Null frame received.");
return;
}
IntSize readSize(sharedSurf->Size());
SurfaceFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? SurfaceFormat::B8G8R8X8
: SurfaceFormat::B8G8R8A8;
bool needsPremult = sharedSurf->HasAlpha() && !mIsGLAlphaPremult;
// Try to read back directly into aDestTarget's output buffer
if (aDestTarget) {
uint8_t* destData;
IntSize destSize;
int32_t destStride;
SurfaceFormat destFormat;
if (aDestTarget->LockBits(&destData, &destSize, &destStride, &destFormat)) {
if (destSize == readSize && destFormat == format) {
RefPtr<DataSourceSurface> data =
Factory::CreateWrappingDataSourceSurface(destData, destStride, destSize, destFormat);
mGLContext->Screen()->Readback(sharedSurf, data);
if (needsPremult) {
PremultiplySurface(data);
}
aDestTarget->ReleaseBits(destData);
return;
}
aDestTarget->ReleaseBits(destData);
}
}
RefPtr<SourceSurface> resultSurf;
if (sharedSurf->Type() == SharedSurfaceType::Basic && !needsPremult) {
SharedSurface_Basic* sharedSurf_Basic = SharedSurface_Basic::Cast(sharedSurf);
resultSurf = sharedSurf_Basic->GetData();
} else {
RefPtr<DataSourceSurface> data = GetTempSurface(readSize, format);
// Readback handles Flush/MarkDirty.
mGLContext->Screen()->Readback(sharedSurf, data);
if (needsPremult) {
PremultiplySurface(data);
}
resultSurf = data;
}
MOZ_ASSERT(resultSurf);
if (aDestTarget) {
aDestTarget->CopySurface(resultSurf,
IntRect(0, 0, readSize.width, readSize.height),
IntPoint(0, 0));
} else {
// If !aDestSurface then we will end up painting using mSurface, so
// stick our surface into mSurface, so that the Paint() path is the same.
mSurface = resultSurf;
}
}
}
void
CopyableCanvasLayer::UpdateTarget(DrawTarget* aDestTarget)
{
if (!IsDirty())
return;
Painted();
if (mDrawTarget) {
mDrawTarget->Flush();
mSurface = mDrawTarget->Snapshot();
}
if (!mGLContext && aDestTarget) {
NS_ASSERTION(mSurface, "Must have surface to draw!");
if (mSurface) {
aDestTarget->CopySurface(mSurface,
IntRect(0, 0, mBounds.width, mBounds.height),
IntPoint(0, 0));
}
return;
}
if (mGLContext) {
RefPtr<DataSourceSurface> readSurf;
RefPtr<SourceSurface> resultSurf;
SharedSurface_GL* sharedSurf = nullptr;
if (mStream) {
sharedSurf = SharedSurface_GL::Cast(mStream->SwapConsumer());
} else {
sharedSurf = mGLContext->RequestFrame();
}
if (!sharedSurf) {
NS_WARNING("Null frame received.");
return;
}
IntSize readSize(sharedSurf->Size());
SurfaceFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? SurfaceFormat::B8G8R8X8
: SurfaceFormat::B8G8R8A8;
if (aDestTarget) {
resultSurf = aDestTarget->Snapshot();
if (!resultSurf) {
resultSurf = GetTempSurface(readSize, format);
}
} else {
resultSurf = GetTempSurface(readSize, format);
}
MOZ_ASSERT(resultSurf);
MOZ_ASSERT(sharedSurf->APIType() == APITypeT::OpenGL);
SharedSurface_GL* surfGL = SharedSurface_GL::Cast(sharedSurf);
if (surfGL->Type() == SharedSurfaceType::Basic) {
// sharedSurf_Basic->mData must outlive readSurf. Alas, readSurf may not
// leave the scope it was declared in.
SharedSurface_Basic* sharedSurf_Basic = SharedSurface_Basic::Cast(surfGL);
readSurf = sharedSurf_Basic->GetData();
} else {
if (resultSurf->GetSize() != readSize ||
!(readSurf = resultSurf->GetDataSurface()) ||
readSurf->GetFormat() != format)
{
readSurf = GetTempSurface(readSize, format);
}
// Readback handles Flush/MarkDirty.
mGLContext->Screen()->Readback(surfGL, readSurf);
}
MOZ_ASSERT(readSurf);
bool needsPremult = surfGL->HasAlpha() && !mIsGLAlphaPremult;
if (needsPremult) {
PremultiplySurface(readSurf);
}
if (readSurf != resultSurf) {
RefPtr<DataSourceSurface> resultDataSurface =
resultSurf->GetDataSurface();
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForData(BackendType::CAIRO,
resultDataSurface->GetData(),
resultDataSurface->GetSize(),
resultDataSurface->Stride(),
resultDataSurface->GetFormat());
IntSize readSize = readSurf->GetSize();
dt->CopySurface(readSurf,
IntRect(0, 0, readSize.width, readSize.height),
IntPoint(0, 0));
}
// If !aDestSurface then we will end up painting using mSurface, so
// stick our surface into mSurface, so that the Paint() path is the same.
if (!aDestTarget) {
mSurface = resultSurf;
}
}
}
