luboslenco
69 lines
1.5 KiB
Plaintext
69 lines
1.5 KiB
Plaintext
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#[set(everything)]
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const constants: {
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pos: float4; // xywh
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tex: float4; // xywh
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col: float4;
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channel: int;
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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 tex: 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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col: float4;
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}
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fun layer_view_vert(input: vert_in): vert_out {
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var output: vert_out;
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var cpos: float4 = constants.pos;
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var ctex: float4 = constants.tex;
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output.pos = float4(input.pos, 0.0, 1.0);
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output.pos.xy = output.pos.xy * cpos.zw + cpos.xy;
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output.pos.xy = output.pos.xy * 2.0 - 1.0;
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output.pos.y = -output.pos.y;
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output.tex = input.pos * ctex.zw + ctex.xy;
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output.col = constants.col;
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return output;
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}
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fun layer_view_frag(input: vert_out): float4 {
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if (constants.channel == 1) {
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return sample_lod(tex, sampler_linear, input.tex, 0.0).rrra * input.col;
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}
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if (constants.channel == 2) {
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return sample_lod(tex, sampler_linear, input.tex, 0.0).ggga * input.col;
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}
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if (constants.channel == 3) {
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return sample_lod(tex, sampler_linear, input.tex, 0.0).bbba * input.col;
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}
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if (constants.channel == 4) {
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return sample_lod(tex, sampler_linear, input.tex, 0.0).aaaa * input.col;
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}
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if (constants.channel == 5) {
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return sample_lod(tex, sampler_linear, input.tex, 0.0).rgba * input.col;
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}
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// else {
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var tex_sample: float4 = sample_lod(tex, sampler_linear, input.tex, 0.0);
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tex_sample.rgb = tex_sample.rgb * tex_sample.a;
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return tex_sample * input.col;
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// }
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}
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#[pipe]
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struct pipe {
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vertex = layer_view_vert;
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fragment = layer_view_frag;
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}
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