Add tetra.shader

data/examples/tetra.shader

@@ -0,0 +1,194 @@
+// Tetrahedral Interpolation Shader for OBS
+
+uniform float redR< 
+    string label = "Red in Red"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float redG< 
+    string label = "Green in Red"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float redB< 
+    string label = "Blue in Red"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float yelR< 
+    string label = "Red in Yellow"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float yelG< 
+    string label = "Green in Yellow"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float yelB< 
+    string label = "Blue in Yellow"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float grnR< 
+    string label = "Red in Green"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float grnG< 
+    string label = "Green in Green"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float grnB< 
+    string label = "Blue in Green"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float cynR< 
+    string label = "Red in Cyan"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float cynG< 
+    string label = "Green in Cyan"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float cynB< 
+    string label = "Blue in Cyan"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float bluR< 
+    string label = "Red in Blue"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float bluG< 
+    string label = "Green in Blue"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float bluB< 
+    string label = "Blue in Blue"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float magR< 
+    string label = "Red in Magenta"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+uniform float magG< 
+    string label = "Green in Magenta"; 
+    string widget_type = "slider";
+    float minimum = -1.0; 
+    float maximum = 1.0; 
+    float step = 0.01;
+> = 0.0;
+
+uniform float magB< 
+    string label = "Blue in Magenta"; 
+    string widget_type = "slider";
+    float minimum = 0.0; 
+    float maximum = 2.0; 
+    float step = 0.01;
+> = 1.0;
+
+
+float3 tetra(float3 RGBimage, float3 red, float3 yel, float3 grn, float3 cyn, float3 blu, float3 mag) {
+    float r = RGBimage.x;
+    float g = RGBimage.y;		
+    float b = RGBimage.z;		
+
+    float3 wht = float3(1.0, 1.0, 1.0);
+
+    if (r > g) {
+        if (g > b) {
+            // r > g > b
+            return r * red + g * (yel - red) + b * (wht - yel);
+        } else if (r > b) {
+            // r > b > g
+            return r * red + g * (wht - mag) + b * (mag - red);
+        } else {
+            // b > r > g
+            return r * (mag - blu) + g * (wht - mag) + b * blu;
+        }
+    } else {
+        if (b > g) {
+            // b > g > r
+            return r * (wht - cyn) + g * (cyn - blu) + b * blu;
+        } else if (b > r) {
+            // g > b > r
+            return r * (wht - cyn) + g * grn + b * (cyn - grn);
+        } else {
+            // g > r > b
+            return r * (yel - grn) + g * grn + b * (wht - yel);
+        }
+    }
+}
+
+float4 mainImage(VertData v_in) : TARGET
+{
+    float4 inputColor = image.Sample(textureSampler, v_in.uv);
+    float alpha = inputColor.a;
+
+    float3 red = float3(redR, redG, redB);
+    float3 yel = float3(yelR, yelG, yelB);
+    float3 grn = float3(grnR, grnG, grnB);
+    float3 cyn = float3(cynR, cynG, cynB);
+    float3 blu = float3(bluR, bluG, bluB);
+    float3 mag = float3(magR, magG, magB);
+
+    float3 outputColor = tetra(inputColor.rgb, red, yel, grn, cyn, blu, mag);
+    return float4(outputColor, alpha);
+}