Fix some errors in the smoothness term.

[nageru] / sor.frag

diff --git a/sor.frag b/sor.frag
index f6ac2ee5adaf0780c67eb23783de58b45e17b222..dc4a5b8af4fdb19910819ffb39a96ee06246163f 100644 (file)
--- a/sor.frag
+++ b/sor.frag
@@ -23,10 +23,10 @@ void main()
        float smooth_r = texture(smoothness_x_tex, tc).x;
        float smooth_d = textureOffset(smoothness_y_tex, tc, ivec2( 0, -1)).x;
        float smooth_u = texture(smoothness_y_tex, tc).x;
-       b -= smooth_l * textureOffset(diff_flow_tex, tc, ivec2(-1,  0)).xy;
-       b -= smooth_r * textureOffset(diff_flow_tex, tc, ivec2( 1,  0)).xy;
-       b -= smooth_d * textureOffset(diff_flow_tex, tc, ivec2( 0, -1)).xy;
-       b -= smooth_u * textureOffset(diff_flow_tex, tc, ivec2( 0,  1)).xy;
+       b += smooth_l * textureOffset(diff_flow_tex, tc, ivec2(-1,  0)).xy;
+       b += smooth_r * textureOffset(diff_flow_tex, tc, ivec2( 1,  0)).xy;
+       b += smooth_d * textureOffset(diff_flow_tex, tc, ivec2( 0, -1)).xy;
+       b += smooth_u * textureOffset(diff_flow_tex, tc, ivec2( 0,  1)).xy;
 
        const float omega = 1.6;
        diff_flow = texture(diff_flow_tex, tc).xy;