mesa: Fix detection of whether an ARB_vp is enabled for two sided lighting.

When there is no ARB_vertex_program program enabled, the Current
pointer points at a default program, so we were always using
VERTEX_PROGRAM_TWO_SIDE, even for fixed function lighting.

Fixes piglit two-sided-lighting*

Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 98ca733..80fd03b 100644 (file)
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -461,7 +461,7 @@ static void
 update_twoside(struct gl_context *ctx)
 {
    if (ctx->Shader.CurrentVertexProgram ||
-       ctx->VertexProgram.Current) {
+       ctx->VertexProgram._Enabled) {
       ctx->VertexProgram._TwoSideEnabled = ctx->VertexProgram.TwoSideEnabled;
    } else {
       ctx->VertexProgram._TwoSideEnabled = (ctx->Light.Enabled &&