#include #include #ifdef __clang__ #pragma clang diagnostic ignored "-Wall" #endif using namespace metal; struct Inputs { uint3 sk_GlobalInvocationID; }; struct Globals { texture2d src; texture2d dest; }; void desaturate_vTT(Inputs _in, texture2d src, texture2d dest) { half4 color = src.read(_in.sk_GlobalInvocationID.xy); color.xyz = half3(dot(color.xyz, half3(0.22h, 0.67h, 0.11h))); dest.write(color, _in.sk_GlobalInvocationID.xy); } kernel void computeMain(uint3 sk_GlobalInvocationID [[thread_position_in_grid]], texture2d src [[texture(0)]], texture2d dest [[texture(1)]]) { Globals _globals{src, dest}; (void)_globals; Inputs _in = { sk_GlobalInvocationID }; if (_in.sk_GlobalInvocationID.x < _globals.src.get_width() && _in.sk_GlobalInvocationID.y < _globals.src.get_height()) { desaturate_vTT(_in, _globals.src, _globals.dest); } return; }