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authorBrian Paul <[email protected]>2010-08-05 16:38:22 -0600
committerBrian Paul <[email protected]>2010-08-05 16:39:09 -0600
commit3d038a3ed2d8325c4b826f13b62398b3ed33f3ba (patch)
tree1e20b85d7aac634638fe445c4c2f03a2eb85ec6e /src
parent918ef7ff18dc407d8ab1d6dc9cfb1267618c6534 (diff)
glsl: fix atan(0, -1)
Fixes fd.o bug 29388 NOTE: this is a candidate for the 7.8 branch.
Diffstat (limited to 'src')
-rw-r--r--src/mesa/slang/library/slang_common_builtin.gc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/slang/library/slang_common_builtin.gc b/src/mesa/slang/library/slang_common_builtin.gc
index d75354deffe..1f5ddbc1ee2 100644
--- a/src/mesa/slang/library/slang_common_builtin.gc
+++ b/src/mesa/slang/library/slang_common_builtin.gc
@@ -411,7 +411,7 @@ float atan(const float y, const float x)
if (abs(x) > 1.0e-4) {
r = atan(y / x);
if (x < 0.0) {
- r = r + sign(y) * 3.141593;
+ r = r + 3.141593 - 6.283186 * float(y < 0.0);
}
}
else {