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-rw-r--r--src/mesa/tnl/t_vb_normals.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vb_normals.c b/src/mesa/tnl/t_vb_normals.c
index 732e7c6f4e..d82008821f 100644
--- a/src/mesa/tnl/t_vb_normals.c
+++ b/src/mesa/tnl/t_vb_normals.c
@@ -68,11 +68,23 @@ static GLboolean run_normal_stage( GLcontext *ctx,
else
lengths = VB->NormalLengthPtr;
+ /* If there is only one normal, don't transform it multiple times:
+ */
+ if (VB->NormalPtr->stride == 0)
+ VB->NormalPtr->count = 1;
+
store->NormalTransform( ctx->ModelviewMatrixStack.Top,
ctx->_ModelViewInvScale,
VB->NormalPtr, /* input normals */
lengths,
&store->normal ); /* resulting normals */
+
+ if (VB->NormalPtr->stride == 0) {
+ VB->NormalPtr->count = VB->Count;
+ store->normal.stride = 0;
+ }
+ else
+ store->normal.stride = 16;
}
VB->NormalPtr = &store->normal;