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-rw-r--r--src/opengl/util/conical_brush.glsl2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/opengl/util/conical_brush.glsl b/src/opengl/util/conical_brush.glsl
index 83ee2f5..b3ec1d7 100644
--- a/src/opengl/util/conical_brush.glsl
+++ b/src/opengl/util/conical_brush.glsl
@@ -20,7 +20,7 @@ vec4 brush()
/* float val = fmod((atan2(-A.y, A.x) + angle) / (2.0 * M_PI), 1); */
if (abs(A.y) == abs(A.x))
A.y += 0.002;
- float t = (atan2(-A.y, A.x) + angle) / (2.0 * M_PI);
+ float t = (atan(-A.y, A.x) + angle) / (2.0 * M_PI);
float val = t - floor(t);
return texture1D(palette, val);
}