58 lines
2.4 KiB
Plaintext
58 lines
2.4 KiB
Plaintext
#include <metal_stdlib>
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using namespace metal;
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struct Params {
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/* 0x0000 */ uint filterDim;
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/* 0x0004 */ uint blockDim;
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};
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struct Flip {
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/* 0x0000 */ uint value;
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};
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struct tint_array_wrapper_1 {
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float3 arr[256];
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};
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struct tint_array_wrapper {
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tint_array_wrapper_1 arr[4];
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};
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kernel void tint_symbol(texture2d<float, access::sample> tint_symbol_4 [[texture(1)]], sampler tint_symbol_5 [[sampler(0)]], texture2d<float, access::write> tint_symbol_6 [[texture(2)]], uint3 WorkGroupID [[threadgroup_position_in_grid]], uint3 LocalInvocationID [[thread_position_in_threadgroup]], uint local_invocation_index [[thread_index_in_threadgroup]], constant Params& params [[buffer(1)]], constant Flip& flip [[buffer(3)]]) {
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threadgroup tint_array_wrapper tint_symbol_3;
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if ((local_invocation_index == 0u)) {
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tint_array_wrapper const tint_symbol_2 = {.arr={}};
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tint_symbol_3 = tint_symbol_2;
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}
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threadgroup_barrier(mem_flags::mem_threadgroup);
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uint const filterOffset = ((params.filterDim - 1u) / 2u);
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int2 const dims = int2(tint_symbol_4.get_width(0), tint_symbol_4.get_height(0));
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int2 const baseIndex = (int2(((WorkGroupID.xy * uint2(params.blockDim, 4u)) + (LocalInvocationID.xy * uint2(4u, 1u)))) - int2(int(filterOffset), 0));
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for(uint r = 0u; (r < 4u); r = (r + 1u)) {
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for(uint c = 0u; (c < 4u); c = (c + 1u)) {
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int2 loadIndex = (baseIndex + int2(int(c), int(r)));
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if ((flip.value != 0u)) {
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loadIndex = loadIndex.yx;
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}
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tint_symbol_3.arr[r].arr[((4u * LocalInvocationID.x) + c)] = tint_symbol_4.sample(tint_symbol_5, ((float2(loadIndex) + float2(0.25f, 0.25f)) / float2(dims)), level(0.0f)).rgb;
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}
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}
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threadgroup_barrier(mem_flags::mem_threadgroup);
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for(uint r = 0u; (r < 4u); r = (r + 1u)) {
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for(uint c = 0u; (c < 4u); c = (c + 1u)) {
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int2 writeIndex = (baseIndex + int2(int(c), int(r)));
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if ((flip.value != 0u)) {
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writeIndex = writeIndex.yx;
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}
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uint const center = ((4u * LocalInvocationID.x) + c);
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if ((((center >= filterOffset) && (center < (256u - filterOffset))) && all((writeIndex < dims)))) {
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float3 acc = float3(0.0f, 0.0f, 0.0f);
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for(uint f = 0u; (f < params.filterDim); f = (f + 1u)) {
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uint i = ((center + f) - filterOffset);
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acc = (acc + ((1.0f / float(params.filterDim)) * tint_symbol_3.arr[r].arr[i]));
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}
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tint_symbol_6.write(float4(acc, 1.0f), uint2(writeIndex));
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}
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}
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}
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return;
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}
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