internal void ClearStencil(ScriptableRenderContext context, Material nonSharedStencilMaterial, StencilTestOptions stencilTestOptions)
{
if (m_stencilTestState != StencilTestState.None)
{
if ((stencilTestOptions & StencilTestOptions.ClearStencil) == StencilTestOptions.ClearStencil)
{
CommandBuffer commandBuffer = CommandBufferPool.Get();
if (m_stencilTestState == StencilTestState.BackfaceOnly)
{
if ((stencilTestOptions & StencilTestOptions.PreventOverwriting) == 0)
{
commandBuffer.DrawMesh(GetFrustumMesh(), transform.localToWorldMatrix, nonSharedStencilMaterial, 0, 1);
}
else
{
ClearFullscreenStencil(commandBuffer);
StencilMaskAllocator.Init(StencilMaskAllocator.availableBits); // reset stencil allocator
}
}
else
{
commandBuffer.DrawMesh(GetFrustumMesh(), transform.localToWorldMatrix, nonSharedStencilMaterial, 0, 3);
}
context.ExecuteCommandBuffer(commandBuffer);
CommandBufferPool.Release(commandBuffer);
}
else
{
// allocate new stencil bit for the next projector
StencilMaskAllocator.AllocateSingleBit();
}
m_stencilTestState = StencilTestState.None;
}
}
public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
{
StencilMaskAllocator.Init(m_stencilMask);
var passes = s_renderPassList[renderingData.cameraData.camera];
foreach (var pass in passes)
{
renderer.EnqueuePass(pass);
}
}