add v1.541 (Extreme)

shaders/world-1/composite3.fsh

@@ -0,0 +1,42 @@
+#version 120
+/* DRAWBUFFERS:6 */
+//overwrite buffer 6, final image is buffer 7
+//This buffer is scaled down, defined in shaders.properties, it's faster than texcoord scaling
+
+#define Bloom
+#define composite3
+#include "/shaders.settings"
+
+#ifdef Bloom
+varying vec2 texcoord;
+uniform sampler2D colortex7; //read buffer 7, TAA+everything
+uniform float viewWidth;
+uniform float viewHeight;
+const bool colortex7MipmapEnabled = true;
+#endif
+
+void main() {
+
+#ifdef Bloom
+	const int nSteps = 25;
+	const int center = 12;		//=nSteps-1 / 2
+
+	vec3 blur = vec3(0.0);
+	float tw = 0.0;
+	for (int i = 0; i < nSteps; i++) {
+		float dist = abs(i-float(center))/center;
+		float weight = (exp(-(dist*dist)/ 0.28));
+
+		vec3 bsample = texture2D(colortex7,(texcoord*4.0 + 2.0*vec2(1.0/viewWidth,1.0/viewHeight)*vec2(i-center,0.0))).rgb;
+
+		blur += bsample*weight;
+		tw += weight;
+	}
+	blur /= tw;
+	blur = clamp(blur,0.0,1.0); //fix flashing black square
+	gl_FragData[0] = vec4(blur, 1.0); 
+#else
+	gl_FragData[0] = vec4(0.0);
+#endif
+}
+