c7ce92a95b
Some Metal devices have a bug where `simd_is_helper_thread()` won't return true after a fragment has been discarded. We can work around this by manually setting `gl_HelperInvocation` upon discarding a fragment. This is fairly unintrusive, so it is enabled by default. I've made it an option so that, when the bug is fixed, we can disable it.
25 lines
454 B
GLSL
25 lines
454 B
GLSL
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct main0_out
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{
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float4 FragColor [[color(0)]];
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};
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fragment main0_out main0()
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{
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main0_out out = {};
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bool gl_HelperInvocation = {};
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gl_HelperInvocation = simd_is_helper_thread();
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bool _15 = gl_HelperInvocation;
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gl_HelperInvocation = true, discard_fragment();
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if (!_15)
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{
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out.FragColor = float4(1.0, 0.0, 0.0, 1.0);
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}
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return out;
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}
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