36 lines
1.6 KiB
Plaintext
36 lines
1.6 KiB
Plaintext
|
#include <metal_stdlib>
|
||
|
|
#include <simd/simd.h>
|
||
|
|
|
||
|
|
using namespace metal;
|
||
|
|
|
||
|
|
struct main0_out
|
||
|
|
{
|
||
|
|
float4 gl_Position;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct main0_in
|
||
|
|
{
|
||
|
|
float4 gl_Position [[attribute(0)]];
|
||
|
|
};
|
||
|
|
|
||
|
|
kernel void main0(main0_in in [[stage_in]], uint gl_InvocationID [[thread_index_in_threadgroup]], uint gl_PrimitiveID [[threadgroup_position_in_grid]], device main0_out* spvOut [[buffer(28)]], constant uint* spvIndirectParams [[buffer(29)]], device MTLQuadTessellationFactorsHalf* spvTessLevel [[buffer(26)]], threadgroup main0_in* gl_in [[threadgroup(0)]])
|
||
|
|
{
|
||
|
|
device main0_out* gl_out = &spvOut[gl_PrimitiveID * 4];
|
||
|
|
if (gl_InvocationID < spvIndirectParams[0])
|
||
|
|
gl_in[gl_InvocationID] = in;
|
||
|
|
threadgroup_barrier(mem_flags::mem_threadgroup);
|
||
|
|
if (gl_InvocationID >= 4)
|
||
|
|
return;
|
||
|
|
if (gl_InvocationID == 0)
|
||
|
|
{
|
||
|
|
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[0] = half(2.0);
|
||
|
|
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[1] = half(3.0);
|
||
|
|
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[2] = half(4.0);
|
||
|
|
spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[3] = half(5.0);
|
||
|
|
spvTessLevel[gl_PrimitiveID].insideTessellationFactor[0] = half(mix(float(spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[0]), float(spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[3]), 0.5));
|
||
|
|
spvTessLevel[gl_PrimitiveID].insideTessellationFactor[1] = half(mix(float(spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[2]), float(spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[1]), 0.5));
|
||
|
|
}
|
||
|
|
gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
|
||
|
|
}
|
||
|
|
|