r300g: set a dummy vertex buffer in context_create

so that the driver doesn't crash if an app doesn't set any vertex buffers.

diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
index 0ac41471650de5694c5d21c66d1c44297fbc5f35..c744fea10cf85aed4807c0c01ef34820e1217d12 100644 (file)
--- a/src/gallium/drivers/r300/r300_context.c
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -455,6 +455,7 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
         vb.depth0 = 1;
 
         r300->dummy_vb.buffer = screen->resource_create(screen, &vb);
+        r300->context.set_vertex_buffers(&r300->context, 0, 1, &r300->dummy_vb);
     }
 
     {