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20 行
1.1 KiB
20 行
1.1 KiB
#pragma kernel ClearDispatchIndirect
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#pragma only_renderers d3d11 ps4 xboxone vulkan metal switch
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RWBuffer<uint> g_DispatchIndirectBuffer : register( u0 ); // Indirect arguments have to be in a _buffer_, not a structured buffer
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#include "LightLoop.cs.hlsl"
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[numthreads(64, 1, 1)]
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void ClearDispatchIndirect(uint dispatchThreadId : SV_DispatchThreadID)
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{
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// On iOS, we get a GPU hang/reset based upon the execution of the ClearDispatchIndirect kernel.
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// The buffer is created using the 'NUM_FEATURE_VARIANTS' constant but we're dispatching a threadgroup of 64 threads, so we are presumably going out of bounds (Metal GPU errors are not terribly descriptive, but this is a common cause).
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// In DirectX out-of-bounds reads are always zero and out-of-bounds writes are are a no op.
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if (dispatchThreadId >= NUM_FEATURE_VARIANTS)
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return;
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g_DispatchIndirectBuffer[dispatchThreadId * 3 + 0] = 0; // ThreadGroupCountX
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g_DispatchIndirectBuffer[dispatchThreadId * 3 + 1] = 1; // ThreadGroupCountY
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g_DispatchIndirectBuffer[dispatchThreadId * 3 + 2] = 1; // ThreadGroupCountZ
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}
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