blurring (not Gaussian blur)

postProcess.frag

@@ -0,0 +1,44 @@
+#version 330 core
+
+in vec2 texCoords;
+
+out vec4 FragColor;
+
+uniform sampler2D frag;
+uniform sampler2D bright;
+uniform bool bloom;
+
+void main(){
+	vec4 hdrColor=texture(frag,texCoords);
+	vec4 brightColor=texture(bright,texCoords);
+
+	if(bloom){
+	float blurKernel[9]=float[](
+		1.0/16,2.0/16,1.0/16,
+		2.0/16,4.0/16,1.0/16,
+		1.0/16,2.0/16,1.0/16);
+	vec2 texel=1.0/textureSize(bright,0);
+
+	vec3 sum=vec3(0);
+	for(int i=0;i<3;i++){
+		for(int j=0;j<3;j++){
+			vec3 adjSample=texture(frag,texCoords+vec2(texel.x*(j-1),texel.y*(i-1))).rgb;
+			adjSample*=blurKernel[i*3+j];
+			sum+=adjSample;
+		}
+	}
+	hdrColor.rgb=sum;
+}
+
+	//hdrColor=brightColor;
+	float gamma=1,exposure=1;
+
+	//Reinhardt
+	//c.rgb=c.rgb/(c.rgb+vec3(1.));
+
+	//Exp
+	hdrColor.rgb=vec3(1.)-exp(-hdrColor.rgb*exposure);
+
+	hdrColor.rgb=pow(hdrColor.rgb,vec3(1/gamma));
+	FragColor=hdrColor;
+}