SPIRV-Cross/reference/shaders-msl/frag/mrt-array.frag
Bill Hollings ec054dad7f MSL: Support synthetic functions in function constants.
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.
2021-09-28 19:10:16 -04:00

95 lines
2.2 KiB
GLSL

#pragma clang diagnostic ignored "-Wmissing-prototypes"
#pragma clang diagnostic ignored "-Wmissing-braces"
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
template<typename T, size_t Num>
struct spvUnsafeArray
{
T elements[Num ? Num : 1];
thread T& operator [] (size_t pos) thread
{
return elements[pos];
}
constexpr const thread T& operator [] (size_t pos) const thread
{
return elements[pos];
}
device T& operator [] (size_t pos) device
{
return elements[pos];
}
constexpr const device T& operator [] (size_t pos) const device
{
return elements[pos];
}
constexpr const constant T& operator [] (size_t pos) const constant
{
return elements[pos];
}
threadgroup T& operator [] (size_t pos) threadgroup
{
return elements[pos];
}
constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
{
return elements[pos];
}
};
// Implementation of the GLSL mod() function, which is slightly different than Metal fmod()
template<typename Tx, typename Ty>
inline Tx mod(Tx x, Ty y)
{
return x - y * floor(x / y);
}
struct main0_out
{
float4 FragColor_0 [[color(0)]];
float4 FragColor_1 [[color(1)]];
float4 FragColor_2 [[color(2)]];
float4 FragColor_3 [[color(3)]];
};
struct main0_in
{
float4 vA [[user(locn0)]];
float4 vB [[user(locn1)]];
};
static inline __attribute__((always_inline))
void write_deeper_in_function(thread spvUnsafeArray<float4, 4>& FragColor, thread float4& vA, thread float4& vB)
{
FragColor[3] = vA * vB;
}
static inline __attribute__((always_inline))
void write_in_function(thread spvUnsafeArray<float4, 4>& FragColor, thread float4& vA, thread float4& vB)
{
FragColor[2] = vA - vB;
write_deeper_in_function(FragColor, vA, vB);
}
fragment main0_out main0(main0_in in [[stage_in]])
{
main0_out out = {};
spvUnsafeArray<float4, 4> FragColor = {};
FragColor[0] = mod(in.vA, in.vB);
FragColor[1] = in.vA + in.vB;
write_in_function(FragColor, in.vA, in.vB);
out.FragColor_0 = FragColor[0];
out.FragColor_1 = FragColor[1];
out.FragColor_2 = FragColor[2];
out.FragColor_3 = FragColor[3];
return out;
}