1 files changed, 38 insertions, 0 deletions
diff --git a/keyshade/bin/data/shader.frag b/keyshade/bin/data/shader.frag
new file mode 100644
index 0000000..7dbf468
--- /dev/null
+++ b/keyshade/bin/data/shader.frag
@@ -0,0 +1,38 @@
+#version 150
+
+uniform vec4 keyColour;
+uniform float keyMinDist;
+uniform float keyMaxDist;
+
+// these are our textures
+uniform sampler2DRect backgroundTex;
+uniform sampler2DRect foregroundTex;
+
+// this comes from the vertex shader
+in vec2 texCoordVarying;
+
+
+
+// this is the output of the fragment shader
+out vec4 outputColor;
+
+void main()
+{
+	// Get color values from the background and foreground
+	vec4 back = texture(backgroundTex, texCoordVarying);
+	vec4 fore = texture(foregroundTex, texCoordVarying);
+
+    // get alpha from mask
+    float mask = texture(backgroundTex, texCoordVarying).r;
+
+    vec4 delta = back - keyColour;
+  	float distance2 = dot( delta, delta );
+  	float weight = clamp( (distance2 - keyMinDist) / (keyMaxDist - keyMinDist) ,0.0,1.0);
+
+  	//float4 transparent = IN.color;
+  	//transparent.w = 0;
+  	//OUT.color = lerp( transparent, IN.color, weight );
+	
+	//mix colors from background and foreground based on the mask value
+    outputColor = mix(fore , back, weight);
+}