sdrblurtest
annotate sdr/blur.glsl @ 0:26513fdda566
initial commit
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 17 Oct 2013 08:19:56 +0300 |
| parents | |
| children |
| rev | line source |
|---|---|
| nuclear@0 | 1 uniform sampler2D tex; |
| nuclear@0 | 2 uniform vec2 size, texsize; |
| nuclear@0 | 3 |
| nuclear@0 | 4 #define KSZ 31 |
| nuclear@0 | 5 #define HALF_KSZ 15 |
| nuclear@0 | 6 #define SCALE float(KSZ * KSZ) |
| nuclear@0 | 7 |
| nuclear@0 | 8 void main() |
| nuclear@0 | 9 { |
| nuclear@0 | 10 float pixw = 1.0 / texsize.x; |
| nuclear@0 | 11 float pixh = 1.0 / texsize.y; |
| nuclear@0 | 12 |
| nuclear@0 | 13 vec3 texel = vec3(0.0, 0.0, 0.0); |
| nuclear@0 | 14 for(int i=0; i<KSZ; i++) { |
| nuclear@0 | 15 for(int j=0; j<KSZ; j++) { |
| nuclear@0 | 16 float x = float(j - HALF_KSZ) * pixw; |
| nuclear@0 | 17 float y = float(i - HALF_KSZ) * pixh; |
| nuclear@0 | 18 vec2 uv = gl_TexCoord[0].st + vec2(x, y); |
| nuclear@0 | 19 texel += texture2D(tex, uv).rgb; |
| nuclear@0 | 20 } |
| nuclear@0 | 21 } |
| nuclear@0 | 22 |
| nuclear@0 | 23 gl_FragColor.rgb = texel / SCALE; |
| nuclear@0 | 24 gl_FragColor.a = 1.0; |
| nuclear@0 | 25 } |