updated LightWorld

src/lib/LightWorld/shaders/reflection.glsl

@@ -0,0 +1,24 @@
+extern Image backBuffer;
+
+extern vec2 screen = vec2(800.0, 600.0);
+extern float reflectionStrength;
+extern float reflectionVisibility;
+
+vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
+	vec2 pSize = vec2(1.0 / screen.x, 1.0 / screen.y);
+	vec4 normal = Texel(texture, texture_coords);
+	if(normal.a > 0.0 && normal.r > 0.0) {
+		vec3 pColor = Texel(backBuffer, texture_coords).rgb;
+		vec4 pColor2;
+		for(int i = 0; i < reflectionStrength; i++) {
+			pColor2 = Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * i));
+			if(pColor2.a > 0.0 && pColor2.g > 0.0) {
+				vec3 rColor = Texel(backBuffer, vec2(texture_coords.x, texture_coords.y + pSize.y * i * 2.0)).rgb;
+				return vec4(rColor, (1.0 - i / reflectionStrength) * reflectionVisibility);
+			}
+		}
+		return vec4(0.0);
+	} else {
+		return vec4(0.0);
+	}
+}