luboslenco
96 lines
4.9 KiB
HLSL
96 lines
4.9 KiB
HLSL
Texture2D<float4> tex0;
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SamplerState _tex0_sampler;
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Texture2D<float4> tex1;
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SamplerState _tex1_sampler;
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Texture2D<float4> tex2;
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SamplerState _tex2_sampler;
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Texture2D<float4> texa;
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SamplerState _texa_sampler;
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Texture2D<float4> texb;
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SamplerState _texb_sampler;
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Texture2D<float4> texc;
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SamplerState _texc_sampler;
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uniform float opac;
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uniform int blending;
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float3 hsv_to_rgb(const float3 c) {
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const float4 K = float4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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float3 p = abs(frac(c.xxx + K.xyz) * 6.0 - K.www);
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return c.z * lerp(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
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}
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float3 rgb_to_hsv(const float3 c) {
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const float4 K = float4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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float4 p = lerp(float4(c.bg, K.wz), float4(c.gb, K.xy), step(c.b, c.g));
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float4 q = lerp(float4(p.xyw, c.r), float4(c.r, p.yzx), step(p.x, c.r));
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float d = q.x - min(q.w, q.y);
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float e = 1.0e-10;
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return float3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
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}
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struct SPIRV_Cross_Output { float4 color0 : SV_Target0; float4 color1 : SV_Target1; float4 color2 : SV_Target2; };
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SPIRV_Cross_Output main(float2 texCoord : TEXCOORD0) {
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float4 col0 = tex0.SampleLevel(_tex0_sampler, texCoord, 0);
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float4 col1 = tex1.SampleLevel(_tex1_sampler, texCoord, 0);
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float4 col2 = tex2.SampleLevel(_tex2_sampler, texCoord, 0);
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float4 cola = texa.SampleLevel(_texa_sampler, texCoord, 0);
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float4 colb = texb.SampleLevel(_texb_sampler, texCoord, 0);
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float4 colc = texc.SampleLevel(_texc_sampler, texCoord, 0);
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float str = col0.a * opac;
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SPIRV_Cross_Output stage_output;
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if (blending == 0) { // Mix
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stage_output.color0 = float4(lerp(cola.rgb, col0.rgb, str), max(col0.a, cola.a));
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}
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else if (blending == 1) { // Darken
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stage_output.color0 = float4(lerp(cola.rgb, min(cola.rgb, col0.rgb), str), max(col0.a, cola.a));
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}
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else if (blending == 2) { // Multiply
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stage_output.color0 = float4(lerp(cola.rgb, cola.rgb * col0.rgb, str), max(col0.a, cola.a));
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}
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else if (blending == 3) { // Burn
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stage_output.color0 = float4(lerp(cola.rgb, float3(1.0, 1.0, 1.0) - (float3(1.0, 1.0, 1.0) - cola.rgb) / col0.rgb, str), max(col0.a, cola.a));
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}
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else if (blending == 4) { // Lighten
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stage_output.color0 = float4(max(cola.rgb, col0.rgb * str), max(col0.a, cola.a));
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}
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else if (blending == 5) { // Screen
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stage_output.color0 = float4((float3(1.0, 1.0, 1.0) - (float3(1.0 - str, 1.0 - str, 1.0 - str) + str * (float3(1.0, 1.0, 1.0) - col0.rgb)) * (float3(1.0, 1.0, 1.0) - cola.rgb)), max(col0.a, cola.a));
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}
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else if (blending == 6) { // Dodge
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stage_output.color0 = float4(lerp(cola.rgb, cola.rgb / (float3(1.0, 1.0, 1.0) - col0.rgb), str), max(col0.a, cola.a));
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}
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else if (blending == 7) { // Add
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stage_output.color0 = float4(lerp(cola.rgb, cola.rgb + col0.rgb, str), max(col0.a, cola.a));
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}
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else if (blending == 8) { // Overlay
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stage_output.color0 = float4(lerp(cola.rgb, (cola.rgb < float3(0.5, 0.5, 0.5) ? float3(2.0, 2.0, 2.0) * cola.rgb * col0.rgb : float3(1.0, 1.0, 1.0) - float3(2.0, 2.0, 2.0) * (float3(1.0, 1.0, 1.0) - col0.rgb) * (float3(1.0, 1.0, 1.0) - cola.rgb)), str), max(col0.a, cola.a));
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}
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else if (blending == 9) { // Soft Light
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stage_output.color0 = float4(((1.0 - str) * cola.rgb + str * ((float3(1.0, 1.0, 1.0) - cola.rgb) * col0.rgb * cola.rgb + cola.rgb * (float3(1.0, 1.0, 1.0) - (float3(1.0, 1.0, 1.0) - col0.rgb) * (float3(1.0, 1.0, 1.0) - cola.rgb)))), max(col0.a, cola.a));
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}
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else if (blending == 10) { // Linear Light
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stage_output.color0 = float4((cola.rgb + str * (float3(2.0, 2.0, 2.0) * (col0.rgb - float3(0.5, 0.5, 0.5)))), max(col0.a, cola.a));
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}
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else if (blending == 11) { // Difference
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stage_output.color0 = float4(lerp(cola.rgb, abs(cola.rgb - col0.rgb), str), max(col0.a, cola.a));
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}
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else if (blending == 12) { // Subtract
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stage_output.color0 = float4(lerp(cola.rgb, cola.rgb - col0.rgb, str), max(col0.a, cola.a));
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}
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else if (blending == 13) { // Divide
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stage_output.color0 = float4(float3(1.0 - str, 1.0 - str, 1.0 - str) * cola.rgb + float3(str, str, str) * cola.rgb / col0.rgb, max(col0.a, cola.a));
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}
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else if (blending == 14) { // Hue
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stage_output.color0 = float4(lerp(cola.rgb, hsv_to_rgb(float3(rgb_to_hsv(col0.rgb).r, rgb_to_hsv(cola.rgb).g, rgb_to_hsv(cola.rgb).b)), str), max(col0.a, cola.a));
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}
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else if (blending == 15) { // Saturation
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stage_output.color0 = float4(lerp(cola.rgb, hsv_to_rgb(float3(rgb_to_hsv(cola.rgb).r, rgb_to_hsv(col0.rgb).g, rgb_to_hsv(cola.rgb).b)), str), max(col0.a, cola.a));
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}
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else if (blending == 16) { // Color
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stage_output.color0 = float4(lerp(cola.rgb, hsv_to_rgb(float3(rgb_to_hsv(col0.rgb).r, rgb_to_hsv(col0.rgb).g, rgb_to_hsv(cola.rgb).b)), str), max(col0.a, cola.a));
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}
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else { // Value
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stage_output.color0 = float4(lerp(cola.rgb, hsv_to_rgb(float3(rgb_to_hsv(cola.rgb).r, rgb_to_hsv(cola.rgb).g, rgb_to_hsv(col0.rgb).b)), str), max(col0.a, cola.a));
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}
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stage_output.color1 = float4(lerp(colb, col1, str));
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stage_output.color2 = float4(lerp(colc, col2, str));
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return stage_output;
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}
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