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      1 varying vec2 varTex0;
      2 
      3 void main() {
      4    vec2 blurCoord = varTex0;
      5    blurCoord.x = varTex0.x + UNI_blurOffset0;
      6    vec3 col = texture2D(UNI_color, blurCoord).rgb;
      7    blurCoord.x = varTex0.x + UNI_blurOffset1;
      8    col += texture2D(UNI_color, blurCoord).rgb;
      9    blurCoord.x = varTex0.x + UNI_blurOffset2;
     10    col += texture2D(UNI_color, blurCoord).rgb;
     11    blurCoord.x = varTex0.x + UNI_blurOffset3;
     12    col += texture2D(UNI_color, blurCoord).rgb;
     13 
     14    gl_FragColor = vec4(col * 0.25, 0.0);
     15 }
     16