updated LightWorld

src/lib/LightWorld/shaders/postshaders/black_and_white.glsl

@@ -0,0 +1,24 @@
+extern float exposure = 0.7;
+extern float brightness = 1.0;
+extern vec3 lumacomponents = vec3(1.0, 1.0, 1.0);
+
+
+// luma 
+//const vec3 lumcoeff = vec3(0.299,0.587,0.114);
+const vec3 lumcoeff = vec3(0.212671, 0.715160, 0.072169);
+
+vec4 effect(vec4 vcolor, Image texture, vec2 texcoord, vec2 pixel_coords)
+{	
+	vec4 input0 = Texel(texture, texcoord);
+		
+	//exposure knee	
+	input0 *= (exp2(input0)*vec4(exposure));
+	
+	vec4 lumacomponents = vec4(lumcoeff * lumacomponents, 0.0 );
+	
+	float luminance = dot(input0,lumacomponents);
+	
+	vec4 luma = vec4(luminance);
+
+	return vec4(luma.rgb * brightness, 1.0);
+}