37 lines
1.2 KiB
Metal
37 lines
1.2 KiB
Metal
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct sampler2D {
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texture2d<half> tex;
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sampler smp;
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};
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half4 sample(sampler2D i, float2 p, float b=0) { return i.tex.sample(i.smp, p, bias(b)); }
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half4 sample(sampler2D i, float3 p, float b=0) { return i.tex.sample(i.smp, p.xy / p.z, bias(b)); }
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half4 sampleLod(sampler2D i, float2 p, float lod) { return i.tex.sample(i.smp, p, level(lod)); }
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half4 sampleLod(sampler2D i, float3 p, float lod) {
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return i.tex.sample(i.smp, p.xy / p.z, level(lod));
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}
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half4 sampleGrad(sampler2D i, float2 p, float2 dPdx, float2 dPdy) {
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return i.tex.sample(i.smp, p, gradient2d(dPdx, dPdy));
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}
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struct Inputs {
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};
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struct Outputs {
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half4 sk_FragColor [[color(0)]];
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};
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struct Globals {
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sampler2D tex;
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};
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fragment Outputs fragmentMain(Inputs _in [[stage_in]], texture2d<half> tex_Tex [[texture(0)]], sampler tex_Smplr [[sampler(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
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Globals _globals{{tex_Tex, tex_Smplr}};
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(void)_globals;
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Outputs _out;
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(void)_out;
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float4 a = float4(sample(_globals.tex, float2(0.0)));
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float4 b = float4(sample(_globals.tex, float3(0.0)));
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_out.sk_FragColor = half4(half2(a.xy), half2(b.zw));
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return _out;
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}
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