diff options
Diffstat (limited to 'wimmel.frag')
| -rw-r--r-- | wimmel.frag | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/wimmel.frag b/wimmel.frag index b148852..42b0139 100644 --- a/wimmel.frag +++ b/wimmel.frag @@ -1,5 +1,6 @@ varying vec2 v_texcoord; uniform sampler2D tex; +uniform sampler2D tex2; uniform vec2 pixelsize; /* The rect to match against */ uniform vec4 srect; @@ -13,8 +14,8 @@ main() for (i = 0.0; i < srect[2] && diff < barrier; i += pixelsize.x) { for (j = 0.0; j < srect[3] && diff < barrier; j += pixelsize.y) { - vec4 match = texture2D(tex, srect.xy + vec2(i,j)); vec4 orig = texture2D(tex, v_texcoord + vec2(i,j)); + vec4 match = texture2D(tex2, vec2(i, j) / srect.zw); diff += int(any(greaterThan(abs(orig - match), vec4(0.2)))); } |