luboslenco
54 lines
1.1 KiB
Plaintext
54 lines
1.1 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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W: float3x3;
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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 draw_image_transform_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, 1.0, 1.0);
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output.pos.xyz = constants.W * output.pos.xyz;
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output.pos.z = 0.0;
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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 draw_image_transform_frag(input: vert_out): float4 {
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var texcolor: float4 = sample(tex, sampler_linear, input.tex) * input.col;
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texcolor.rgb = texcolor.rgb * texcolor.a * input.col.a;
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return texcolor;
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}
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#[pipe]
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struct pipe {
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vertex = draw_image_transform_vert;
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fragment = draw_image_transform_frag;
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}
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