static ClipMethod DetermineSelfClipMethod(RenderChain renderChain, VisualElement ve)
{
if (!ve.ShouldClip())
{
return(ClipMethod.NotClipped);
}
// Even though GroupTransform does not formally imply the use of scissors, we prefer to use them because
// this way, we can avoid updating nested clipping rects.
bool preferScissors = (ve.renderHints & (RenderHints.GroupTransform | RenderHints.ClipWithScissors)) != 0;
ClipMethod rectClipMethod = preferScissors ? ClipMethod.Scissor : ClipMethod.ShaderDiscard;
if (!UIRUtility.IsRoundRect(ve) && !UIRUtility.IsVectorImageBackground(ve))
{
return(rectClipMethod);
}
int inheritedMaskDepth = 0;
VisualElement parent = ve.hierarchy.parent;
if (parent != null)
{
inheritedMaskDepth = parent.renderChainData.childrenMaskDepth;
}
// We're already at the deepest level, we can't go any deeper.
if (inheritedMaskDepth == UIRUtility.k_MaxMaskDepth)
{
return(rectClipMethod);
}
// Stencil clipping is not yet supported in world-space rendering, fallback to a coarse shader discard for now
return(renderChain.drawInCameras ? rectClipMethod : ClipMethod.Stencil);
}
public void ApplyVisualElementClipping()
{
bool flag = this.currentElement.renderChainData.clipMethod == ClipMethod.Scissor;
if (flag)
{
RenderChainCommand renderChainCommand = this.m_Owner.AllocCommand();
renderChainCommand.type = CommandType.PushScissor;
renderChainCommand.owner = this.currentElement;
this.m_Entries.Add(new UIRStylePainter.Entry
{
customCommand = renderChainCommand
});
this.m_ClosingInfo.needsClosing = (this.m_ClosingInfo.popScissorClip = true);
}
else
{
bool flag2 = this.currentElement.renderChainData.clipMethod == ClipMethod.Stencil;
if (flag2)
{
bool flag3 = UIRUtility.IsVectorImageBackground(this.currentElement);
if (flag3)
{
this.GenerateStencilClipEntryForSVGBackground();
}
else
{
this.GenerateStencilClipEntryForRoundedRectBackground();
}
}
}
this.m_ClipRectID = this.currentElement.renderChainData.clipRectID;
}