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authorBrian Paul <brianp@vmware.com>2009-06-16 08:45:06 -0600
committerBrian Paul <brianp@vmware.com>2009-06-16 08:45:56 -0600
commited7f4b42307bff4633689d6781cd3643f10041e5 (patch)
tree4cfe1ce7364596dda630099e6f1b13a27047456b
parent3463b1479d1c70e3b23189c72132e9ad5f710ff9 (diff)
mesa: fix REMAINDER() macro
The results were incorrect for some negative values of A. See bug 21872.
-rw-r--r--src/mesa/swrast/s_texfilter.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c
index 31bfb5c952..dd59314cd9 100644
--- a/src/mesa/swrast/s_texfilter.c
+++ b/src/mesa/swrast/s_texfilter.c
@@ -138,7 +138,7 @@ lerp_rgba_3d(GLfloat result[4], GLfloat a, GLfloat b, GLfloat c,
* If A is a signed integer, A % B doesn't give the right value for A < 0
* (in terms of texture repeat). Just casting to unsigned fixes that.
*/
-#define REMAINDER(A, B) ((unsigned) (A) % (unsigned) (B))
+#define REMAINDER(A, B) (((A) + (B) * 1024) % (B))
/**