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#import <metal_stdlib>
using namespace metal;

#define FXAA_PC 1
#define FXAA_MSL 1
#define FXAA_GREEN_AS_LUMA 1

#import "FXAA3_11.h"

kernel void FXAA(
	texture2d<float,access::sample> src[[texture(0)]],
	texture2d<float,access::write> dst[[texture(1)]],
	constant float2 &resolution[[buffer(0)]],
	uint2 gid[[thread_position_in_grid]]) {
		
		dst.write(float4(FxaaPixelShader(
		(float2(gid)+0.5)/resolution,
		float4(0.0),
		src,
		src,
		src,
		1.0/resolution,
		float4(0.0),
		float4(0.0),
		float4(0.0),
		0.166,
		0.0833,
		0.05,
		0.0,
		0.0,
		0.0,
		float4(0.0)
	).rgb,1),gid);
}