static TemporaryRef<DataSourceSurface> YInvertImageSurface(DataSourceSurface* aSurf)
{
RefPtr<DataSourceSurface> temp =
Factory::CreateDataSourceSurfaceWithStride(aSurf->GetSize(),
aSurf->GetFormat(),
aSurf->Stride());
RefPtr<DrawTarget> dt =
Factory::CreateDrawTargetForData(BackendType::CAIRO,
temp->GetData(),
temp->GetSize(),
temp->Stride(),
temp->GetFormat());
nsRefPtr<gfxContext> ctx = new gfxContext(dt);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->Scale(1.0, -1.0);
ctx->Translate(-gfxPoint(0.0, aSurf->GetSize().height));
nsRefPtr<gfxImageSurface> thebesSurf =
new gfxImageSurface(aSurf->GetData(),
ThebesIntSize(aSurf->GetSize()),
aSurf->Stride(),
SurfaceFormatToImageFormat(aSurf->GetFormat()));
ctx->SetSource(thebesSurf);
ctx->Paint();
return temp.forget();
}
X11TextureData* X11TextureData::Create(gfx::IntSize aSize,
gfx::SurfaceFormat aFormat,
TextureFlags aFlags,
LayersIPCChannel* aAllocator) {
MOZ_ASSERT(aSize.width >= 0 && aSize.height >= 0);
if (aSize.width <= 0 || aSize.height <= 0 ||
aSize.width > XLIB_IMAGE_SIDE_SIZE_LIMIT ||
aSize.height > XLIB_IMAGE_SIDE_SIZE_LIMIT) {
gfxDebug() << "Asking for X11 surface of invalid size " << aSize.width
<< "x" << aSize.height;
return nullptr;
}
gfxImageFormat imageFormat = SurfaceFormatToImageFormat(aFormat);
RefPtr<gfxASurface> surface =
gfxPlatform::GetPlatform()->CreateOffscreenSurface(aSize, imageFormat);
if (!surface || surface->GetType() != gfxSurfaceType::Xlib) {
NS_ERROR("creating Xlib surface failed!");
return nullptr;
}
gfxXlibSurface* xlibSurface = static_cast<gfxXlibSurface*>(surface.get());
bool crossProcess = !aAllocator->IsSameProcess();
X11TextureData* texture = new X11TextureData(
aSize, aFormat, !!(aFlags & TextureFlags::DEALLOCATE_CLIENT),
crossProcess, xlibSurface);
if (crossProcess) {
FinishX(DefaultXDisplay());
}
return texture;
}
void
SharedSurface_EGLImage::Fence()
{
MutexAutoLock lock(mMutex);
mGL->MakeCurrent();
if (!mPipeActive) {
MOZ_ASSERT(!mSync);
MOZ_ASSERT(!mPipeComplete);
if (!mPipeFailed) {
if (!CreateTexturePipe(mEGL, mGL, mFormats, Size(),
&mProdTexForPipe, &mImage))
{
mPipeFailed = true;
}
}
if (!mPixels) {
SurfaceFormat format =
HasAlpha() ? SurfaceFormat::B8G8R8A8
: SurfaceFormat::B8G8R8X8;
mPixels = Factory::CreateDataSourceSurface(Size(), format);
}
nsRefPtr<gfxImageSurface> wrappedData =
new gfxImageSurface(mPixels->GetData(),
ThebesIntSize(mPixels->GetSize()),
mPixels->Stride(),
SurfaceFormatToImageFormat(mPixels->GetFormat()));
ReadScreenIntoImageSurface(mGL, wrappedData);
mPixels->MarkDirty();
return;
}
MOZ_ASSERT(mPipeActive);
MOZ_ASSERT(mCurConsGL);
if (mEGL->IsExtensionSupported(GLLibraryEGL::KHR_fence_sync) &&
mGL->IsExtensionSupported(GLContext::OES_EGL_sync))
{
if (mSync) {
MOZ_ALWAYS_TRUE( mEGL->fDestroySync(Display(), mSync) );
mSync = 0;
}
mSync = mEGL->fCreateSync(Display(),
LOCAL_EGL_SYNC_FENCE,
nullptr);
if (mSync) {
mGL->fFlush();
return;
}
}
MOZ_ASSERT(!mSync);
mGL->fFinish();
}
bool
TextureImageTextureSourceOGL::Update(gfx::DataSourceSurface* aSurface,
nsIntRegion* aDestRegion,
gfx::IntPoint* aSrcOffset)
{
MOZ_ASSERT(mGL);
if (!mGL) {
NS_WARNING("trying to update TextureImageTextureSourceOGL without a GLContext");
return false;
}
MOZ_ASSERT(aSurface);
IntSize size = aSurface->GetSize();
if (!mTexImage ||
(mTexImage->GetSize() != size && !aSrcOffset) ||
mTexImage->GetContentType() != gfx::ContentForFormat(aSurface->GetFormat())) {
if (mFlags & TEXTURE_DISALLOW_BIGIMAGE) {
mTexImage = CreateBasicTextureImage(mGL, size,
gfx::ContentForFormat(aSurface->GetFormat()),
WrapMode(mGL, mFlags & TEXTURE_ALLOW_REPEAT),
FlagsToGLFlags(mFlags),
SurfaceFormatToImageFormat(aSurface->GetFormat()));
} else {
// XXX - clarify which size we want to use. IncrementalContentHost will
// require the size of the destination surface to be different from
// the size of aSurface.
// See bug 893300 (tracks the implementation of ContentHost for new textures).
mTexImage = CreateTextureImage(mGL,
size,
gfx::ContentForFormat(aSurface->GetFormat()),
WrapMode(mGL, mFlags & TEXTURE_ALLOW_REPEAT),
FlagsToGLFlags(mFlags),
SurfaceFormatToImageFormat(aSurface->GetFormat()));
}
ClearCachedFilter();
}
mTexImage->UpdateFromDataSource(aSurface, aDestRegion, aSrcOffset);
if (mTexImage->InUpdate()) {
mTexImage->EndUpdate();
}
return true;
}
bool
X11DataTextureSourceBasic::Update(gfx::DataSourceSurface* aSurface,
nsIntRegion* aDestRegion,
gfx::IntPoint* aSrcOffset)
{
// Reallocate our internal X11 surface if we don't have a DrawTarget yet,
// or if we changed surface size or format since last update.
if (!mBufferDrawTarget ||
(aSurface->GetSize() != mBufferDrawTarget->GetSize()) ||
(aSurface->GetFormat() != mBufferDrawTarget->GetFormat())) {
nsRefPtr<gfxASurface> surf;
gfxImageFormat imageFormat = SurfaceFormatToImageFormat(aSurface->GetFormat());
Display *display = DefaultXDisplay();
Screen *screen = DefaultScreenOfDisplay(display);
XRenderPictFormat *xrenderFormat =
gfxXlibSurface::FindRenderFormat(display, imageFormat);
if (xrenderFormat) {
surf = gfxXlibSurface::Create(screen, xrenderFormat,
ThebesIntSize(aSurface->GetSize()));
}
if (!surf) {
NS_WARNING("Couldn't create native surface, fallback to image surface");
surf = new gfxImageSurface(ThebesIntSize(aSurface->GetSize()), imageFormat);
}
mBufferDrawTarget = gfxPlatform::GetPlatform()->
CreateDrawTargetForSurface(surf, aSurface->GetSize());
}
// Image contents have changed, upload to our DrawTarget
// If aDestRegion is null, means we're updating the whole surface
// Note : Incremental update with a source offset is only used on Mac.
NS_ASSERTION(!aSrcOffset, "SrcOffset should not be used with linux OMTC basic");
if (aDestRegion) {
nsIntRegionRectIterator iter(*aDestRegion);
while (const nsIntRect* iterRect = iter.Next()) {
IntRect srcRect(iterRect->x, iterRect->y, iterRect->width, iterRect->height);
IntPoint dstPoint(iterRect->x, iterRect->y);
// We're uploading regions to our buffer, so let's just copy contents over
mBufferDrawTarget->CopySurface(aSurface, srcRect, dstPoint);
}
} else {
// We're uploading the whole buffer, so let's just copy the full surface
IntSize size = aSurface->GetSize();
mBufferDrawTarget->CopySurface(aSurface, IntRect(0, 0, size.width, size.height),
IntPoint(0, 0));
}
return true;
}
DIBTextureData*
MemoryDIBTextureData::Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat)
{
RefPtr<gfxWindowsSurface> surface
= new gfxWindowsSurface(aSize, SurfaceFormatToImageFormat(aFormat));
if (!surface || surface->CairoStatus()) {
NS_WARNING("Could not create DIB surface");
return nullptr;
}
return new MemoryDIBTextureData(aSize, aFormat, surface);
}
void
GLScreenBuffer::Readback(SharedSurface_GL* src, DataSourceSurface* dest)
{
MOZ_ASSERT(src && dest);
DataSourceSurface::MappedSurface ms;
dest->Map(DataSourceSurface::MapType::READ, &ms);
nsRefPtr<gfxImageSurface> wrappedDest =
new gfxImageSurface(ms.mData,
ThebesIntSize(dest->GetSize()),
ms.mStride,
SurfaceFormatToImageFormat(dest->GetFormat()));
DeprecatedReadback(src, wrappedDest);
dest->Unmap();
}
// Run the test for a texture client and a surface
void TestTextureClientSurface(TextureClient* texture, gfxImageSurface* surface) {
// client allocation
ASSERT_TRUE(texture->CanExposeDrawTarget());
ASSERT_TRUE(texture->Lock(OpenMode::OPEN_READ_WRITE));
// client painting
RefPtr<DrawTarget> dt = texture->BorrowDrawTarget();
RefPtr<SourceSurface> source =
gfxPlatform::GetPlatform()->GetSourceSurfaceForSurface(dt, surface);
dt->CopySurface(source, IntRect(IntPoint(), source->GetSize()), IntPoint());
RefPtr<SourceSurface> snapshot = dt->Snapshot();
AssertSurfacesEqual(snapshot, source);
dt = nullptr; // drop reference before calling Unlock()
texture->Unlock();
// client serialization
SurfaceDescriptor descriptor;
ASSERT_TRUE(texture->ToSurfaceDescriptor(descriptor));
ASSERT_NE(descriptor.type(), SurfaceDescriptor::Tnull_t);
// host deserialization
RefPtr<TextureHost> host = CreateBackendIndependentTextureHost(descriptor, nullptr,
texture->GetFlags());
ASSERT_TRUE(host.get() != nullptr);
ASSERT_EQ(host->GetFlags(), texture->GetFlags());
// host read
// XXX - this can fail because lock tries to upload the texture but it needs a
// Compositor to do that. We could add a DummyComposior for testing but I am
// not sure it'll be worth it. Maybe always test against a BasicCompositor,
// but the latter needs a widget...
if (host->Lock()) {
RefPtr<mozilla::gfx::DataSourceSurface> hostDataSurface = host->GetAsSurface();
RefPtr<gfxImageSurface> hostSurface =
new gfxImageSurface(hostDataSurface->GetData(),
hostDataSurface->GetSize(),
hostDataSurface->Stride(),
SurfaceFormatToImageFormat(hostDataSurface->GetFormat()));
AssertSurfacesEqual(surface, hostSurface.get());
host->Unlock();
}
}
void
SharedSurface_Basic::Fence()
{
mGL->MakeCurrent();
ScopedBindFramebuffer autoFB(mGL, mFB);
DataSourceSurface::MappedSurface map;
mData->Map(DataSourceSurface::MapType::WRITE, &map);
nsRefPtr<gfxImageSurface> wrappedData =
new gfxImageSurface(map.mData,
ThebesIntSize(mData->GetSize()),
map.mStride,
SurfaceFormatToImageFormat(mData->GetFormat()));
ReadPixelsIntoImageSurface(mGL, wrappedData);
mData->Unmap();
}
// Run the test for a texture client and a surface
void TestTextureClientSurface(TextureClient* texture, gfxImageSurface* surface) {
// client allocation
ASSERT_TRUE(texture->CanExposeDrawTarget());
texture->AllocateForSurface(ToIntSize(surface->GetSize()));
ASSERT_TRUE(texture->IsAllocated());
ASSERT_TRUE(texture->Lock(OPEN_READ_WRITE));
// client painting
RefPtr<DrawTarget> dt = texture->GetAsDrawTarget();
RefPtr<SourceSurface> source =
gfxPlatform::GetPlatform()->GetSourceSurfaceForSurface(dt, surface);
dt->CopySurface(source, IntRect(IntPoint(), source->GetSize()), IntPoint());
RefPtr<SourceSurface> snapshot = dt->Snapshot();
AssertSurfacesEqual(snapshot, source);
dt = nullptr; // drop reference before calling Unlock()
texture->Unlock();
// client serialization
SurfaceDescriptor descriptor;
ASSERT_TRUE(texture->ToSurfaceDescriptor(descriptor));
ASSERT_NE(descriptor.type(), SurfaceDescriptor::Tnull_t);
// host deserialization
RefPtr<TextureHost> host = CreateBackendIndependentTextureHost(descriptor, nullptr,
texture->GetFlags());
ASSERT_TRUE(host.get() != nullptr);
ASSERT_EQ(host->GetFlags(), texture->GetFlags());
// host read
ASSERT_TRUE(host->Lock());
RefPtr<mozilla::gfx::DataSourceSurface> hostDataSurface = host->GetAsSurface();
host->Unlock();
nsRefPtr<gfxImageSurface> hostSurface =
new gfxImageSurface(hostDataSurface->GetData(),
ThebesIntSize(hostDataSurface->GetSize()),
hostDataSurface->Stride(),
SurfaceFormatToImageFormat(hostDataSurface->GetFormat()));
AssertSurfacesEqual(surface, hostSurface.get());
}
bool
DIBTextureClient::AllocateForSurface(gfx::IntSize aSize, TextureAllocationFlags aFlags)
{
MOZ_ASSERT(!IsAllocated());
mSize = aSize;
mSurface = new gfxWindowsSurface(gfxIntSize(aSize.width, aSize.height),
SurfaceFormatToImageFormat(mFormat));
if (!mSurface || mSurface->CairoStatus())
{
NS_WARNING("Could not create surface");
mSurface = nullptr;
return false;
}
return true;
}
void WriteSnapshotToDumpFile_internal(T* aObj, DataSourceSurface* aSurf)
{
nsRefPtr<gfxImageSurface> deprecatedSurf =
new gfxImageSurface(aSurf->GetData(),
ThebesIntSize(aSurf->GetSize()),
aSurf->Stride(),
SurfaceFormatToImageFormat(aSurf->GetFormat()));
nsCString string(aObj->Name());
string.Append('-');
string.AppendInt((uint64_t)aObj);
if (gfxUtils::sDumpPaintFile) {
fprintf_stderr(gfxUtils::sDumpPaintFile, "array[\"%s\"]=\"", string.BeginReading());
}
deprecatedSurf->DumpAsDataURL(gfxUtils::sDumpPaintFile);
if (gfxUtils::sDumpPaintFile) {
fprintf_stderr(gfxUtils::sDumpPaintFile, "\";");
}
}
bool
TextureImageTextureSourceOGL::Update(gfx::DataSourceSurface* aSurface,
nsIntRegion* aDestRegion,
gfx::IntPoint* aSrcOffset)
{
GLContext *gl = mCompositor->gl();
MOZ_ASSERT(gl);
if (!gl) {
NS_WARNING("trying to update TextureImageTextureSourceOGL without a GLContext");
return false;
}
if (!aSurface) {
gfxCriticalError() << "Invalid surface for OGL update";
return false;
}
MOZ_ASSERT(aSurface);
IntSize size = aSurface->GetSize();
if (!mTexImage ||
(mTexImage->GetSize() != size && !aSrcOffset) ||
mTexImage->GetContentType() != gfx::ContentForFormat(aSurface->GetFormat())) {
if (mFlags & TextureFlags::DISALLOW_BIGIMAGE) {
GLint maxTextureSize;
gl->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &maxTextureSize);
if (size.width > maxTextureSize || size.height > maxTextureSize) {
NS_WARNING("Texture exceeds maximum texture size, refusing upload");
return false;
}
// Explicitly use CreateBasicTextureImage instead of CreateTextureImage,
// because CreateTextureImage might still choose to create a tiled
// texture image.
mTexImage = CreateBasicTextureImage(gl, size,
gfx::ContentForFormat(aSurface->GetFormat()),
LOCAL_GL_CLAMP_TO_EDGE,
FlagsToGLFlags(mFlags),
SurfaceFormatToImageFormat(aSurface->GetFormat()));
} else {
// XXX - clarify which size we want to use. IncrementalContentHost will
// require the size of the destination surface to be different from
// the size of aSurface.
// See bug 893300 (tracks the implementation of ContentHost for new textures).
mTexImage = CreateTextureImage(gl,
size,
gfx::ContentForFormat(aSurface->GetFormat()),
LOCAL_GL_CLAMP_TO_EDGE,
FlagsToGLFlags(mFlags),
SurfaceFormatToImageFormat(aSurface->GetFormat()));
}
ClearCachedFilter();
if (aDestRegion &&
!aSrcOffset &&
!aDestRegion->IsEqual(nsIntRect(0, 0, size.width, size.height))) {
// UpdateFromDataSource will ignore our specified aDestRegion since the texture
// hasn't been allocated with glTexImage2D yet. Call Resize() to force the
// allocation (full size, but no upload), and then we'll only upload the pixels
// we care about below.
mTexImage->Resize(size);
}
}
mTexImage->UpdateFromDataSource(aSurface, aDestRegion, aSrcOffset);
if (mTexImage->InUpdate()) {
mTexImage->EndUpdate();
}
return true;
}
void
CanvasLayerD3D9::UpdateSurface()
{
if (!IsDirty() && mTexture)
return;
Painted();
if (!mTexture) {
CreateTexture();
if (!mTexture) {
NS_WARNING("CanvasLayerD3D9::Updated called but no texture present and creation failed!");
return;
}
}
if (mGLContext) {
SharedSurface* surf = mGLContext->RequestFrame();
if (!surf)
return;
SharedSurface_Basic* shareSurf = SharedSurface_Basic::Cast(surf);
// WebGL reads entire surface.
LockTextureRectD3D9 textureLock(mTexture);
if (!textureLock.HasLock()) {
NS_WARNING("Failed to lock CanvasLayer texture.");
return;
}
D3DLOCKED_RECT rect = textureLock.GetLockRect();
DataSourceSurface* frameData = shareSurf->GetData();
// Scope for gfxContext, so it's destroyed early.
{
RefPtr<DrawTarget> mapDt = Factory::CreateDrawTargetForData(BACKEND_CAIRO,
(uint8_t*)rect.pBits,
shareSurf->Size(),
rect.Pitch,
FORMAT_B8G8R8A8);
nsRefPtr<gfxImageSurface> thebesFrameData =
new gfxImageSurface(frameData->GetData(),
ThebesIntSize(frameData->GetSize()),
frameData->Stride(),
SurfaceFormatToImageFormat(frameData->GetFormat()));
nsRefPtr<gfxContext> ctx = new gfxContext(mapDt);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(thebesFrameData);
ctx->Paint();
mapDt->Flush();
}
} else {
RECT r;
r.left = mBounds.x;
r.top = mBounds.y;
r.right = mBounds.XMost();
r.bottom = mBounds.YMost();
LockTextureRectD3D9 textureLock(mTexture);
if (!textureLock.HasLock()) {
NS_WARNING("Failed to lock CanvasLayer texture.");
return;
}
D3DLOCKED_RECT lockedRect = textureLock.GetLockRect();
nsRefPtr<gfxImageSurface> sourceSurface;
if (mSurface->GetType() == gfxSurfaceTypeWin32) {
sourceSurface = mSurface->GetAsImageSurface();
} else if (mSurface->GetType() == gfxSurfaceTypeImage) {
sourceSurface = static_cast<gfxImageSurface*>(mSurface.get());
if (sourceSurface->Format() != gfxImageFormatARGB32 &&
sourceSurface->Format() != gfxImageFormatRGB24)
{
return;
}
} else {
sourceSurface = new gfxImageSurface(gfxIntSize(mBounds.width, mBounds.height),
gfxImageFormatARGB32);
nsRefPtr<gfxContext> ctx = new gfxContext(sourceSurface);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->SetSource(mSurface);
ctx->Paint();
}
uint8_t *startBits = sourceSurface->Data();
uint32_t sourceStride = sourceSurface->Stride();
if (sourceSurface->Format() != gfxImageFormatARGB32) {
mHasAlpha = false;
} else {
mHasAlpha = true;
}
for (int y = 0; y < mBounds.height; y++) {
memcpy((uint8_t*)lockedRect.pBits + lockedRect.Pitch * y,
startBits + sourceStride * y,
mBounds.width * 4);
}
}
}
void
ReadPixelsIntoImageSurface(GLContext* gl, gfxImageSurface* dest) {
gl->MakeCurrent();
MOZ_ASSERT(dest->GetSize() != gfxIntSize(0, 0));
/* gfxImageFormat::ARGB32:
* RGBA+UByte: be[RGBA], le[ABGR]
* RGBA+UInt: le[RGBA]
* BGRA+UInt: le[BGRA]
* BGRA+UIntRev: le[ARGB]
*
* gfxImageFormat::RGB16_565:
* RGB+UShort: le[rrrrrggg,gggbbbbb]
*/
bool hasAlpha = dest->Format() == gfxImageFormat::ARGB32;
int destPixelSize;
GLenum destFormat;
GLenum destType;
switch (dest->Format()) {
case gfxImageFormat::RGB24: // XRGB
case gfxImageFormat::ARGB32:
destPixelSize = 4;
// Needs host (little) endian ARGB.
destFormat = LOCAL_GL_BGRA;
destType = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
break;
case gfxImageFormat::RGB16_565:
destPixelSize = 2;
destFormat = LOCAL_GL_RGB;
destType = LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV;
break;
default:
MOZ_CRASH("Bad format.");
}
MOZ_ASSERT(dest->Stride() == dest->Width() * destPixelSize);
GLenum readFormat = destFormat;
GLenum readType = destType;
bool needsTempSurf = !GetActualReadFormats(gl,
destFormat, destType,
readFormat, readType);
nsAutoPtr<gfxImageSurface> tempSurf;
gfxImageSurface* readSurf = nullptr;
int readPixelSize = 0;
if (needsTempSurf) {
if (gl->DebugMode()) {
NS_WARNING("Needing intermediary surface for ReadPixels. This will be slow!");
}
SurfaceFormat readFormatGFX;
switch (readFormat) {
case LOCAL_GL_RGBA:
case LOCAL_GL_BGRA: {
readFormatGFX = hasAlpha ? SurfaceFormat::B8G8R8A8
: SurfaceFormat::B8G8R8X8;
break;
}
case LOCAL_GL_RGB: {
MOZ_ASSERT(readPixelSize == 2);
MOZ_ASSERT(readType == LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV);
readFormatGFX = SurfaceFormat::R5G6B5;
break;
}
default: {
MOZ_CRASH("Bad read format.");
}
}
switch (readType) {
case LOCAL_GL_UNSIGNED_BYTE: {
MOZ_ASSERT(readFormat == LOCAL_GL_RGBA);
readPixelSize = 4;
break;
}
case LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV: {
MOZ_ASSERT(readFormat == LOCAL_GL_BGRA);
readPixelSize = 4;
break;
}
case LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV: {
MOZ_ASSERT(readFormat == LOCAL_GL_RGB);
readPixelSize = 2;
break;
}
default: {
MOZ_CRASH("Bad read type.");
}
}
tempSurf = new gfxImageSurface(dest->GetSize(),
SurfaceFormatToImageFormat(readFormatGFX),
false);
readSurf = tempSurf;
} else {
readPixelSize = destPixelSize;
readSurf = dest;
}
MOZ_ASSERT(readPixelSize);
GLint currentPackAlignment = 0;
gl->fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, ¤tPackAlignment);
if (currentPackAlignment != readPixelSize)
gl->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, readPixelSize);
GLsizei width = dest->Width();
GLsizei height = dest->Height();
readSurf->Flush();
gl->fReadPixels(0, 0,
width, height,
readFormat, readType,
readSurf->Data());
readSurf->MarkDirty();
if (currentPackAlignment != readPixelSize)
gl->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, currentPackAlignment);
if (readSurf != dest) {
MOZ_ASSERT(readFormat == LOCAL_GL_RGBA);
MOZ_ASSERT(readType == LOCAL_GL_UNSIGNED_BYTE);
// So we just copied in RGBA in big endian, or le: 0xAABBGGRR.
// We want 0xAARRGGBB, so swap R and B:
dest->Flush();
RefPtr<DataSourceSurface> readDSurf =
Factory::CreateWrappingDataSourceSurface(readSurf->Data(),
readSurf->Stride(),
ToIntSize(readSurf->GetSize()),
ImageFormatToSurfaceFormat(readSurf->Format()));
SwapRAndBComponents(readDSurf);
dest->MarkDirty();
gfxContext ctx(dest);
ctx.SetOperator(gfxContext::OPERATOR_SOURCE);
ctx.SetSource(readSurf);
ctx.Paint();
}
// Check if GL is giving back 1.0 alpha for
// RGBA reads to RGBA images from no-alpha buffers.
#ifdef XP_MACOSX
if (gl->WorkAroundDriverBugs() &&
gl->Vendor() == gl::GLVendor::NVIDIA &&
dest->Format() == gfxImageFormat::ARGB32 &&
width && height)
{
GLint alphaBits = 0;
gl->fGetIntegerv(LOCAL_GL_ALPHA_BITS, &alphaBits);
if (!alphaBits) {
const uint32_t alphaMask = gfxPackedPixelNoPreMultiply(0xff,0,0,0);
dest->Flush();
uint32_t* itr = (uint32_t*)dest->Data();
uint32_t testPixel = *itr;
if ((testPixel & alphaMask) != alphaMask) {
// We need to set the alpha channel to 1.0 manually.
uint32_t* itrEnd = itr + width*height; // Stride is guaranteed to be width*4.
for (; itr != itrEnd; itr++) {
*itr |= alphaMask;
}
}
dest->MarkDirty();
}
}
#endif
}
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;
RefPtr<DataSourceSurface> readDSurf;
nsRefPtr<gfxASurface> resultSurf;
SharedSurface* sharedSurf = mGLContext->RequestFrame();
if (!sharedSurf) {
NS_WARNING("Null frame received.");
return;
}
IntSize readSize(sharedSurf->Size());
gfxImageFormat format = (GetContentFlags() & CONTENT_OPAQUE)
? gfxImageFormat::RGB24
: gfxImageFormat::ARGB32;
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) {
// sharedSurf_Basic->mData must outlive readSurf and readDSurf. Alas,
// readSurf and readDSurf may not leave the scope they were declared in.
SharedSurface_Basic* sharedSurf_Basic = SharedSurface_Basic::Cast(surfGL);
readDSurf = sharedSurf_Basic->GetData();
readSurf = new gfxImageSurface(readDSurf->GetData(),
ThebesIntSize(readDSurf->GetSize()),
readDSurf->Stride(),
SurfaceFormatToImageFormat(readDSurf->GetFormat()));
} 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;
}
}
}
