140 lines
4.9 KiB
Plaintext
140 lines
4.9 KiB
Plaintext
uniform float4x4 ViewProj;
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uniform texture2d image;
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uniform int size;
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sampler_state pixelSampler {
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Filter = Point;
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AddressU = Clamp;
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AddressV = Clamp;
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};
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struct VertData {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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VertData vertex_program(VertData vd)
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{
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vd.pos = mul(float4(vd.pos.xyz, 1.0), ViewProj);
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return vd;
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}
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// -------------------------------------------------------------------------------- //
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// Helpers
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// -------------------------------------------------------------------------------- //
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uint get_selector(VertData vd, int components) {
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return uint(vd.uv.x * size * components) % components;
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}
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// -------------------------------------------------------------------------------- //
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// Pack/Unpack RG/GR
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// -------------------------------------------------------------------------------- //
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float4 _PackRG(VertData vd) : TARGET {
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if (get_selector(vd, 2) == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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}
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}
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technique PackRG { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackRG(vd); } }
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float4 _PackGR(VertData vd) : TARGET {
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if (get_selector(vd, 2) == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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}
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}
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technique PackGR { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackGR(vd); } }
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// -------------------------------------------------------------------------------- //
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// Pack/Unpack RGB/BGR
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// -------------------------------------------------------------------------------- //
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float4 _PackRGB(VertData vd) : TARGET {
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uint select = get_selector(vd, 3);
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if (select == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).b, 0., 0., 1.);
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}
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}
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technique PackRGB { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackRGB(vd); } }
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float4 _PackBGR(VertData vd) : TARGET {
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uint select = get_selector(vd, 3);
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if (select == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).b, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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}
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return float4(0., 0., 0., 0.);
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}
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technique PackBGR { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackBGR(vd); } }
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// -------------------------------------------------------------------------------- //
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// Pack/Unpack RGBA/ABGR
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// -------------------------------------------------------------------------------- //
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float4 _PackRGBA(VertData vd) : TARGET {
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uint select = get_selector(vd, 4);
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if (select == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else if (select == 2) {
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return float4(image.Sample(pixelSampler, vd.uv).b, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).a, 0., 0., 1.);
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}
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}
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technique PackRGBA { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackRGBA(vd); } }
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float4 _PackABGR(VertData vd) : TARGET {
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uint select = get_selector(vd, 4);
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if (select == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).a, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).b, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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}
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}
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technique PackABGR { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackABGR(vd); } }
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// -------------------------------------------------------------------------------- //
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// Pack/Unpack ARGB/BGRA
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// -------------------------------------------------------------------------------- //
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float4 _PackARGB(VertData vd) : TARGET {
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uint select = get_selector(vd, 4);
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if (select == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).a, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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} else if (select == 2) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).b, 0., 0., 1.);
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}
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}
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technique PackARGB { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackARGB(vd); } }
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float4 _PackBGRA(VertData vd) : TARGET {
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uint select = get_selector(vd, 4);
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if (select == 0) {
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return float4(image.Sample(pixelSampler, vd.uv).b, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).g, 0., 0., 1.);
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} else if (select == 1) {
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return float4(image.Sample(pixelSampler, vd.uv).r, 0., 0., 1.);
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} else {
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return float4(image.Sample(pixelSampler, vd.uv).a, 0., 0., 1.);
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}
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}
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technique PackBGRA { pass { vertex_shader = vertex_program(vd); pixel_shader = _PackBGRA(vd); } }
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