internal RenderStateBlock GetDefaultRenderStateBlock(bool stencilTest, StencilTestOptions stencilTestOptions)
{
RenderStateBlock renderStateBlock = new RenderStateBlock();
if (stencilTest && m_stencilTestState != StencilTestState.None)
{
int stencilMask = StencilMaskAllocator.GetCurrentBit();
renderStateBlock.mask = RenderStateMask.Stencil;
renderStateBlock.stencilReference = stencilMask;
if (m_stencilTestState == StencilTestState.BothSide)
{
if ((stencilTestOptions & StencilTestOptions.PreventOverwriting) == 0)
{
renderStateBlock.stencilState = new StencilState(true, (byte)stencilMask, 0, CompareFunction.Equal, StencilOp.Keep, StencilOp.Keep, StencilOp.Keep);
}
else
{
renderStateBlock.stencilState = new StencilState(true, (byte)stencilMask, (byte)stencilMask, CompareFunction.Equal, StencilOp.Zero, StencilOp.Keep, StencilOp.Keep);
}
}
else
{
if ((stencilTestOptions & StencilTestOptions.PreventOverwriting) == 0)
{
renderStateBlock.stencilState = new StencilState(true, (byte)stencilMask, 0, CompareFunction.NotEqual, StencilOp.Keep, StencilOp.Keep, StencilOp.Keep);
}
else
{
renderStateBlock.stencilState = new StencilState(true, (byte)stencilMask, (byte)stencilMask, CompareFunction.NotEqual, StencilOp.Replace, StencilOp.Keep, StencilOp.Keep);
}
}
}
return(renderStateBlock);
}
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;
}
}
