r300: fallback only if stencil test is enabled

diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c
index 41b5e30..f87fee4 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_render.c
+++ b/src/mesa/drivers/dri/r300/r300_render.c
@@ -439,14 +439,9 @@ static int r300Fallback(GLcontext * ctx)
 
        FALLBACK_IF(ctx->RenderMode != GL_RENDER);
 
-       /* If GL_EXT_stencil_two_side is disabled, this fallback check can
-        * be removed.
-        */
-       FALLBACK_IF(ctx->Stencil.Ref[0] != ctx->Stencil.Ref[back]
-                   || ctx->Stencil.ValueMask[0] !=
-                   ctx->Stencil.ValueMask[back]
-                   || ctx->Stencil.WriteMask[0] !=
-                   ctx->Stencil.WriteMask[back]);
+       FALLBACK_IF(ctx->Stencil.Enabled && (ctx->Stencil.Ref[0] != ctx->Stencil.Ref[back]
+                   || ctx->Stencil.ValueMask[0] != ctx->Stencil.ValueMask[back]
+                   || ctx->Stencil.WriteMask[0] != ctx->Stencil.WriteMask[back]));
 
        if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite)
                FALLBACK_IF(ctx->Point.PointSprite);