blur调优

res/shader/fullscreenquad_gaussian_horizontal.fs

@@ -12,7 +12,9 @@ void main()
 	float texelOffset = 1/100.0;
 	float weight[5] = float[](0.22,0.19,0.12,0.08,0.01);
 
-	for(int i = 0; i < 5; i++){
+	color = texture2D(U_MainTexture, V_Texcoord)*weight[0];
+
+	for(int i = 1; i < 5; i++){
 		color += texture2D(U_MainTexture, vec2(V_Texcoord.x+texelOffset*i, V_Texcoord.y))*weight[i];
 		color += texture2D(U_MainTexture, vec2(V_Texcoord.x-texelOffset*i, V_Texcoord.y))*weight[i];
 	}

res/shader/fullscreenquad_gaussian_vertical.fs

@@ -12,7 +12,9 @@ void main()
 	float texelOffset = 1/100.0;
 	float weight[5] = float[](0.22,0.19,0.12,0.08,0.01);
 
-	for(int i = 0; i < 5; i++){
+	color = texture2D(U_MainTexture, V_Texcoord)*weight[0];
+
+	for(int i = 1; i < 5; i++){
 		color += texture2D(U_MainTexture, vec2(V_Texcoord.x, V_Texcoord.y+texelOffset*i))*weight[i];
 		color += texture2D(U_MainTexture, vec2(V_Texcoord.x, V_Texcoord.y-texelOffset*i))*weight[i];
 	}