ec054dad7f
Emit synthetic functions before function constants. Support use of spvQuantizeToF16() in function constants for numerical behavior consistency with the op code. Ensure subnormal results from OpQuantizeToF16 are flushed to zero per SPIR-V spec. Adjust SPIRV-Cross unit test reference shaders to accommodate these changes. Any MSL reference shader that inclues a synthetic function is affected, since the location it is emitted has changed.
97 lines
2.5 KiB
JavaScript
97 lines
2.5 KiB
JavaScript
#pragma clang diagnostic ignored "-Wmissing-prototypes"
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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> struct spvRemoveReference { typedef T type; };
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template<typename T> struct spvRemoveReference<thread T&> { typedef T type; };
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template<typename T> struct spvRemoveReference<thread T&&> { typedef T type; };
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template<typename T> inline constexpr thread T&& spvForward(thread typename spvRemoveReference<T>::type& x)
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{
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return static_cast<thread T&&>(x);
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}
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template<typename T> inline constexpr thread T&& spvForward(thread typename spvRemoveReference<T>::type&& x)
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{
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return static_cast<thread T&&>(x);
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}
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enum class spvSwizzle : uint
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{
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none = 0,
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zero,
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one,
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red,
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green,
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blue,
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alpha
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};
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template<typename T>
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inline T spvGetSwizzle(vec<T, 4> x, T c, spvSwizzle s)
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{
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switch (s)
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{
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case spvSwizzle::none:
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return c;
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case spvSwizzle::zero:
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return 0;
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case spvSwizzle::one:
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return 1;
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case spvSwizzle::red:
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return x.r;
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case spvSwizzle::green:
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return x.g;
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case spvSwizzle::blue:
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return x.b;
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case spvSwizzle::alpha:
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return x.a;
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}
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}
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// Wrapper function that swizzles texture samples and fetches.
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template<typename T>
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inline vec<T, 4> spvTextureSwizzle(vec<T, 4> x, uint s)
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{
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if (!s)
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return x;
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return vec<T, 4>(spvGetSwizzle(x, x.r, spvSwizzle((s >> 0) & 0xFF)), spvGetSwizzle(x, x.g, spvSwizzle((s >> 8) & 0xFF)), spvGetSwizzle(x, x.b, spvSwizzle((s >> 16) & 0xFF)), spvGetSwizzle(x, x.a, spvSwizzle((s >> 24) & 0xFF)));
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}
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template<typename T>
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inline T spvTextureSwizzle(T x, uint s)
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{
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return spvTextureSwizzle(vec<T, 4>(x, 0, 0, 1), s).x;
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}
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struct UBO
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{
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uint index;
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};
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struct UBO2
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{
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uint index2;
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};
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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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struct main0_in
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{
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float2 vUV [[user(locn0)]];
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};
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fragment main0_out main0(main0_in in [[stage_in]], constant uint* spvSwizzleConstants [[buffer(30)]], constant UBO& uUBO [[buffer(0)]], constant UBO2& _50 [[buffer(1)]], array<texture2d<float>, 4> uSampler [[texture(0)]], array<sampler, 4> uSamplerSmplr [[sampler(0)]])
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{
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main0_out out = {};
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constant uint* uSamplerSwzl = &spvSwizzleConstants[0];
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out.FragColor = spvTextureSwizzle(uSampler[uUBO.index].sample(uSamplerSmplr[uUBO.index], in.vUV), uSamplerSwzl[uUBO.index]);
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out.FragColor += spvTextureSwizzle(uSampler[_50.index2].sample(uSamplerSmplr[_50.index2], in.vUV), uSamplerSwzl[_50.index2]);
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return out;
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}
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