71 lines
2.1 KiB
Plaintext
71 lines
2.1 KiB
Plaintext
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#pragma clang diagnostic ignored "-Wmissing-prototypes"
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#pragma clang diagnostic ignored "-Wmissing-braces"
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#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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template<typename T, size_t Num>
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struct spvUnsafeArray
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{
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T elements[Num ? Num : 1];
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thread T& operator [] (size_t pos) thread
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{
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return elements[pos];
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}
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constexpr const thread T& operator [] (size_t pos) const thread
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{
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return elements[pos];
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}
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device T& operator [] (size_t pos) device
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{
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return elements[pos];
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}
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constexpr const device T& operator [] (size_t pos) const device
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{
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return elements[pos];
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}
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constexpr const constant T& operator [] (size_t pos) const constant
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{
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return elements[pos];
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}
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threadgroup T& operator [] (size_t pos) threadgroup
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{
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return elements[pos];
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}
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constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
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{
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return elements[pos];
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}
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};
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struct main0_out
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{
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float4 gl_Position [[position]];
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};
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static inline __attribute__((always_inline))
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float4 read_tess_levels(thread spvUnsafeArray<float, 4>& gl_TessLevelOuter, thread spvUnsafeArray<float, 2>& gl_TessLevelInner)
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{
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return float4(gl_TessLevelOuter[0], gl_TessLevelOuter[1], gl_TessLevelOuter[2], gl_TessLevelOuter[3]) + float2(gl_TessLevelInner[0], gl_TessLevelInner[1]).xyxy;
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}
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[[ patch(triangle, 0) ]] vertex main0_out main0(uint gl_PrimitiveID [[patch_id]], const device MTLTriangleTessellationFactorsHalf* spvTessLevel [[buffer(26)]])
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{
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main0_out out = {};
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spvUnsafeArray<float, 4> gl_TessLevelOuter = {};
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spvUnsafeArray<float, 2> gl_TessLevelInner = {};
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gl_TessLevelOuter[0] = spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[0];
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gl_TessLevelOuter[1] = spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[1];
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gl_TessLevelOuter[2] = spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[2];
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gl_TessLevelInner[0] = spvTessLevel[gl_PrimitiveID].insideTessellationFactor;
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out.gl_Position = read_tess_levels(gl_TessLevelOuter, gl_TessLevelInner);
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return out;
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}
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