add v1.541 (Extreme)

shaders/gbuffers_clouds.fsh

@@ -0,0 +1,36 @@
+#version 120
+/* DRAWBUFFERS:01 */
+
+#define Clouds 3	//[0 1 2 3 4] Toggle clouds. 0=Off, 1=Default MC, 2=2D, 3=VL, 4=2D+VL
+
+uniform sampler2D texture;
+varying vec4 color;
+varying vec4 texcoord;
+varying vec3 normal;
+
+#if Clouds == 1
+vec3 RGB2YCoCg(vec3 c){
+	return vec3( 0.25*c.r+0.5*c.g+0.25*c.b, 0.5*c.r-0.5*c.b +0.5, -0.25*c.r+0.5*c.g-0.25*c.b +0.5);
+}
+vec4 encode (vec3 n){
+    return vec4(n.xy*inversesqrt(n.z*8.0+8.0) + 0.5, texcoord.zw);
+}
+#endif
+
+void main() {
+
+#if Clouds == 1
+	vec4 albedo = texture2D(texture, texcoord.xy)*color;
+	vec4 cAlbedo = vec4(RGB2YCoCg(albedo.rgb),albedo.a);
+
+	bool pattern = (mod(gl_FragCoord.x,2.0)==mod(gl_FragCoord.y,2.0));
+	cAlbedo.g = (pattern)?cAlbedo.b: cAlbedo.g;
+	cAlbedo.b = 0.02;
+
+	gl_FragData[0] = cAlbedo;
+	gl_FragData[1] = encode(normal.xyz);
+#else
+	discard;
+#endif
+
+}