luboslenco
45 lines
850 B
Plaintext
45 lines
850 B
Plaintext
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#[set(everything)]
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const constants: {
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mask_opacity: float;
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};
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#[set(everything)]
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const sampler_linear: sampler;
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#[set(everything)]
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const tex0: tex2d;
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#[set(everything)]
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const texa: tex2d;
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struct vert_in {
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pos: float2;
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}
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struct vert_out {
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pos: float4;
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tex: float2;
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}
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fun mask_apply_vert(input: vert_in): vert_out {
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var output: vert_out;
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output.tex = input.pos.xy * 0.5 + 0.5;
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output.tex.y = 1.0 - output.tex.y;
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output.pos = float4(input.pos.xy, 0.0, 1.0);
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return output;
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}
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fun mask_apply_frag(input: vert_out): float4 {
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var col0: float4 = sample_lod(tex0, sampler_linear, input.tex, 0.0);
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var mask: float = sample_lod(texa, sampler_linear, input.tex, 0.0).r;
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mask = lerp(1.0, mask, constants.mask_opacity);
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return float4(col0.rgb, col0.a * mask);
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}
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#[pipe]
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struct pipe {
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vertex = mask_apply_vert;
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fragment = mask_apply_frag;
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}
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