Warning, /plasma/kwin/src/plugins/blur/shaders/upsample.frag is written in an unsupported language. File is not indexed.
0001 uniform sampler2D texUnit;
0002 uniform float offset;
0003 uniform vec2 halfpixel;
0004
0005 varying vec2 uv;
0006
0007 void main(void)
0008 {
0009 vec4 sum = texture2D(texUnit, uv + vec2(-halfpixel.x * 2.0, 0.0) * offset);
0010 sum += texture2D(texUnit, uv + vec2(-halfpixel.x, halfpixel.y) * offset) * 2.0;
0011 sum += texture2D(texUnit, uv + vec2(0.0, halfpixel.y * 2.0) * offset);
0012 sum += texture2D(texUnit, uv + vec2(halfpixel.x, halfpixel.y) * offset) * 2.0;
0013 sum += texture2D(texUnit, uv + vec2(halfpixel.x * 2.0, 0.0) * offset);
0014 sum += texture2D(texUnit, uv + vec2(halfpixel.x, -halfpixel.y) * offset) * 2.0;
0015 sum += texture2D(texUnit, uv + vec2(0.0, -halfpixel.y * 2.0) * offset);
0016 sum += texture2D(texUnit, uv + vec2(-halfpixel.x, -halfpixel.y) * offset) * 2.0;
0017
0018 gl_FragColor = sum / 12.0;
0019 }