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-rw-r--r--src/mesa/main/enable.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index 671db68ce8..67fd083ca8 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -257,7 +257,7 @@ void _mesa_set_enable( GLcontext *ctx, GLenum cap, GLboolean state )
if (state) {
ctx->Transform.ClipPlanesEnabled |= (1 << p);
- if (ctx->ProjectionMatrixStack.Top->flags & MAT_DIRTY)
+ if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
_math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
/* This derived state also calculated in clip.c and