1#include <metal_stdlib> 2#include <simd/simd.h> 3#ifdef __clang__ 4#pragma clang diagnostic ignored "-Wall" 5#endif 6using namespace metal; 7struct Inputs { 8 uint3 sk_GlobalInvocationID; 9}; 10struct Globals { 11 texture2d<half, access::read> src; 12 texture2d<half, access::write> dest; 13}; 14void desaturate_vTT(Inputs _in, texture2d<half, access::read> src, texture2d<half, access::write> dest) { 15 half4 color = src.read(_in.sk_GlobalInvocationID.xy); 16 color.xyz = half3(dot(color.xyz, half3(0.22h, 0.67h, 0.11h))); 17 dest.write(color, _in.sk_GlobalInvocationID.xy); 18} 19kernel void computeMain(uint3 sk_GlobalInvocationID [[thread_position_in_grid]], texture2d<half, access::read> src [[texture(0)]], texture2d<half, access::write> dest [[texture(1)]]) { 20 Globals _globals{src, dest}; 21 (void)_globals; 22 Inputs _in = { sk_GlobalInvocationID }; 23 if (_in.sk_GlobalInvocationID.x < _globals.src.get_width() && _in.sk_GlobalInvocationID.y < _globals.src.get_height()) { 24 desaturate_vTT(_in, _globals.src, _globals.dest); 25 } 26 return; 27} 28