void
LayerManagerOGL::SetWorldTransform(const gfxMatrix& aMatrix)
{
NS_ASSERTION(aMatrix.PreservesAxisAlignedRectangles(),
"SetWorldTransform only accepts matrices that satisfy PreservesAxisAlignedRectangles");
NS_ASSERTION(!aMatrix.HasNonIntegerScale(),
"SetWorldTransform only accepts matrices with integer scale");
mWorldMatrix = aMatrix;
}
bool
HwcComposer2D::TryRender(Layer* aRoot,
const gfxMatrix& aGLWorldTransform)
{
if (!aGLWorldTransform.PreservesAxisAlignedRectangles()) {
LOGD("Render aborted. World transform has non-square angle rotation");
return false;
}
MOZ_ASSERT(Initialized());
if (mList) {
mList->numHwLayers = 0;
mHwcLayerMap.Clear();
}
if (mPrepared) {
Reset();
}
// XXX: The clear() below means all rect vectors will be have to be
// reallocated. We may want to avoid this if possible
mVisibleRegions.clear();
MOZ_ASSERT(mHwcLayerMap.IsEmpty());
if (!PrepareLayerList(aRoot,
mScreenRect,
gfxMatrix(),
aGLWorldTransform))
{
LOGD("Render aborted. Nothing was drawn to the screen");
return false;
}
if (!TryHwComposition()) {
LOGD("H/W Composition failed");
return false;
}
LOGD("Frame rendered");
return true;
}