port from perforce

hgplus/ShaderMinifier/tests/real/the orange guy/dfc_pixel.glsl

@@ -0,0 +1,67 @@
+const float PI = 3.1415926;
+
+
+uniform float localTime;
+
+vec3 coul2(float x, float y)
+{
+	 float h = (x + 1.0) * 350.0;
+	 float w = (y + 1.0) * 350.0;
+	 
+ 	 float hi = (h - 350.0) / 20.0;
+     float wi = (w - 350.0) / 20.0;
+    
+	 float xo = hi;
+	 float yo = wi + localTime;/*cos(hi/5.0) + wi + 0.1; */
+	    
+	 float xa = cos(hi/5.0);
+	 float ya = cos(wi/5.0);
+		
+	 float cosxa = cos(xa);
+	 float sinxa = sin(xa);
+	 float cosya = cos(ya);
+	 float sinya = sin(ya);
+		
+    vec3 res = vec3(0.0,0.0,0.0);
+    
+    for (int l = 0; l <= 30; l++)
+    {
+    	float li = (float(l) - 15.0) * 2.0;
+    	
+		float zo = li;
+		
+		float za = cos(li / 20.0); 
+		
+		float tmp = yo * cosxa + zo * sinxa;		
+		zo = zo * cosxa - yo * sinxa;
+		yo = tmp;
+		
+		float tmp2 = xo * cosya + zo * sinya;
+		zo = zo * cosya - xo * sinya;
+		xo = tmp2;
+	/*	
+		float tmp3 = xo * cos(za) + yo * sin(za);
+		yo = yo * cos(za) - xo * sin(za);
+		xo = tmp3;
+	*/	
+		vec3 color = vec3(128.0) + vec3(128.0) * vec3(cos(zo), cos(zo + PI * 2.0 / 3.0), cos(zo - PI * 2.0 / 3.0));
+		
+		float length = sqrt( xo * xo + yo * yo + zo * zo ) - 30.0;
+		float contrib = 0.25 / (1.0 + 400.0 * length * length);
+		
+		res = res * (1.0 - contrib) + color * contrib;
+	/*	res += contrib * color; */
+ 	 }
+ 	 
+ 	 return res;
+ }
+
+void main()
+{	
+	vec2 p = 0.5 * gl_TexCoord[0].xy + vec2(0.1,0.1);
+	
+	
+	gl_FragColor = vec4( 0.15 * coul2(p.x, p.y) , 1.0);
+}
+
+