25 lines
993 B
Metal
25 lines
993 B
Metal
|
#include <metal_stdlib>
|
||
|
|
#include <simd/simd.h>
|
||
|
|
using namespace metal;
|
||
|
|
struct Inputs {
|
||
|
|
uint3 sk_GlobalInvocationID;
|
||
|
|
};
|
||
|
|
struct Globals {
|
||
|
|
texture2d<half, access::read> src;
|
||
|
|
texture2d<half, access::write> dest;
|
||
|
|
};
|
||
|
|
void desaturate_vTT(Inputs _in, texture2d<half, access::read> src, texture2d<half, access::write> 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<half, access::read> src [[texture(0)]], texture2d<half, access::write> 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;
|
||
|
|
}
|