bool
ISurfaceAllocator::PlatformAllocSurfaceDescriptor(const gfxIntSize& aSize,
gfxASurface::gfxContentType aContent,
uint32_t aCaps,
SurfaceDescriptor* aBuffer)
{
// Some GL implementations fail to render gralloc textures with
// width < 64. There's not much point in gralloc'ing buffers that
// small anyway, so fall back on shared memory plus a texture
// upload.
if (aSize.width < 64) {
return false;
}
PROFILER_LABEL("ShadowLayerForwarder", "PlatformAllocSurfaceDescriptor");
// Gralloc buffers are efficiently mappable as gfxImageSurface, so
// no need to check |aCaps & MAP_AS_IMAGE_SURFACE|.
MaybeMagicGrallocBufferHandle handle;
PGrallocBufferChild* gc;
bool defaultRBSwap;
if (aCaps & USING_GL_RENDERING_ONLY) {
gc = AllocGrallocBuffer(aSize,
PixelFormatForContentType(aContent),
GraphicBuffer::USAGE_HW_RENDER |
GraphicBuffer::USAGE_HW_TEXTURE,
&handle);
// If you're allocating for USING_GL_RENDERING_ONLY, then we don't flag
// this for RB swap.
defaultRBSwap = false;
} else {
gc = AllocGrallocBuffer(aSize,
PixelFormatForContentType(aContent),
GraphicBuffer::USAGE_SW_READ_OFTEN |
GraphicBuffer::USAGE_SW_WRITE_OFTEN |
GraphicBuffer::USAGE_HW_TEXTURE,
&handle);
// But if you're allocating for non-GL-only rendering, we flag for
// RB swap to preserve old behaviour and proper interaction with
// cairo.
defaultRBSwap = true;
}
if (!gc) {
NS_ERROR("GrallocBufferConstructor failed by returned null");
return false;
} else if (handle.Tnull_t == handle.type()) {
NS_ERROR("GrallocBufferConstructor failed by returning handle with type Tnull_t");
PGrallocBufferChild::Send__delete__(gc);
return false;
}
GrallocBufferActor* gba = static_cast<GrallocBufferActor*>(gc);
gba->InitFromHandle(handle.get_MagicGrallocBufferHandle());
*aBuffer = SurfaceDescriptorGralloc(nullptr, gc, aSize,
/* external */ false,
defaultRBSwap);
return true;
}
/*static*/ PGrallocBufferParent*
GrallocBufferActor::Create(const gfxIntSize& aSize,
const gfxContentType& aContent,
MaybeMagicGrallocBufferHandle* aOutHandle)
{
SAMPLE_LABEL("GrallocBufferActor", "Create");
GrallocBufferActor* actor = new GrallocBufferActor();
*aOutHandle = null_t();
android::PixelFormat format = PixelFormatForContentType(aContent);
sp<GraphicBuffer> buffer(
new GraphicBuffer(aSize.width, aSize.height, format,
GraphicBuffer::USAGE_SW_READ_OFTEN |
GraphicBuffer::USAGE_SW_WRITE_OFTEN |
GraphicBuffer::USAGE_HW_TEXTURE));
if (buffer->initCheck() != OK)
return actor;
size_t bpp = gfxASurface::BytePerPixelFromFormat(
gfxPlatform::GetPlatform()->OptimalFormatForContent(aContent));
actor->mAllocBytes = aSize.width * aSize.height * bpp;
sCurrentAlloc += actor->mAllocBytes;
actor->mGraphicBuffer = buffer;
*aOutHandle = MagicGrallocBufferHandle(buffer);
return actor;
}
/*static*/ PGrallocBufferParent*
GrallocBufferActor::Create(const gfxIntSize& aSize,
const gfxContentType& aContent,
MaybeMagicGrallocBufferHandle* aOutHandle)
{
SAMPLE_LABEL("GrallocBufferActor", "Create");
GrallocBufferActor* actor = new GrallocBufferActor();
*aOutHandle = null_t();
android::PixelFormat format = PixelFormatForContentType(aContent);
sp<GraphicBuffer> buffer(
new GraphicBuffer(aSize.width, aSize.height, format,
GraphicBuffer::USAGE_SW_READ_OFTEN |
GraphicBuffer::USAGE_SW_WRITE_OFTEN |
GraphicBuffer::USAGE_HW_TEXTURE));
if (buffer->initCheck() != OK)
return actor;
actor->mGraphicBuffer = buffer;
*aOutHandle = MagicGrallocBufferHandle(buffer);
return actor;
}
