void
BasicCanvasLayer::Initialize(const Data& aData)
{
NS_ASSERTION(mSurface == nullptr, "BasicCanvasLayer::Initialize called twice!");
if (aData.mSurface) {
mSurface = aData.mSurface;
NS_ASSERTION(aData.mGLContext == nullptr,
"CanvasLayer can't have both surface and GLContext");
mNeedsYFlip = false;
} else if (aData.mGLContext) {
NS_ASSERTION(aData.mGLContext->IsOffscreen(), "canvas gl context isn't offscreen");
mGLContext = aData.mGLContext;
mGLBufferIsPremultiplied = aData.mGLBufferIsPremultiplied;
mCanvasFramebuffer = mGLContext->GetOffscreenFBO();
mNeedsYFlip = true;
} else if (aData.mDrawTarget) {
mDrawTarget = aData.mDrawTarget;
mSurface = gfxPlatform::GetPlatform()->GetThebesSurfaceForDrawTarget(mDrawTarget);
mNeedsYFlip = false;
} else {
NS_ERROR("CanvasLayer created without mSurface, mDrawTarget or mGLContext?");
}
mBounds.SetRect(0, 0, aData.mSize.width, aData.mSize.height);
}
