resources.shaders.deprecated.BlurY.frag Maven / Gradle / Ivy

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#version 120
#include StdLib.frag

uniform sampler2D diffuse_sampler;
uniform float texstep;

in vec2 texcoord;

const float offset[3] = float[](0., 1.3846153846, 3.2307692308 );
const float weight[3] = float[](0.2255859375, 0.314208984375, 0.06982421875 );

void main(){

    FragColor = tex(diffuse_sampler, texcoord) * weight[0];

    for (int i=1; i<3; i++) {
        FragColor += tex(diffuse_sampler, texcoord+vec2(0., texstep * offset[i])) * weight[i];
        FragColor += tex(diffuse_sampler, texcoord-vec2(0., texstep * offset[i])) * weight[i];
    }
}