Resolve "Mesh Shader Implementation"

Closes #87 (closed)

projects/mesh_shader/resources/shaders/shader.frag

@@ -2,8 +2,31 @@
 #extension GL_ARB_separate_shader_objects : enable
 
 layout(location = 0) in  vec3 passNormal;
+layout(location = 1) in  flat uint passTaskIndex;
 layout(location = 0) out vec3 outColor;
 
+uint lowbias32(uint x)
+{
+    x ^= x >> 16;
+    x *= 0x7feb352dU;
+    x ^= x >> 15;
+    x *= 0x846ca68bU;
+    x ^= x >> 16;
+    return x;
+}
+
+float hashToFloat(uint hash){
+    return (hash % 255) / 255.f;
+}
+
+vec3 colorFromIndex(uint i){
+    return vec3(
+        hashToFloat(lowbias32(i+0)),
+        hashToFloat(lowbias32(i+1)),
+        hashToFloat(lowbias32(i+2)));
+}
+
 void main() {
-	outColor = normalize(passNormal) * 0.5 +0.5;
+	outColor = normalize(passNormal) * 0.5 + 0.5;
+    outColor = colorFromIndex(passTaskIndex);
 }
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