shader3/res/shader/fullscreenquad_gaussian_vertical.fs

varying vec2 V_Texcoord;

uniform sampler2D U_MainTexture;

void main()
{
	//1 2 1
	//2 4 2
	//1 2 1
	vec4 color = vec4(0.0);
	float texelOffset = 1/100.0;
	float weight[5] = float[](0.22,0.19,0.12,0.08,0.01);

	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];
	}

	gl_FragColor = color;
}