r600: set correct initial point_minmax values

src/mesa/drivers/dri/r600/r600_context.c

@@ -43,6 +43,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "main/extensions.h"
 #include "main/bufferobj.h"
 #include "main/texobj.h"
+#include "main/points.h"
 
 #include "swrast/swrast.h"
 #include "swrast_setup/swrast_setup.h"
@@ -459,6 +460,9 @@ GLboolean r600CreateContext(gl_api api,
 
 	r600InitConstValues(ctx, screen);
 
+	/* reinit, it depends on consts above */
+	_mesa_init_point(ctx);
+
 	_mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 
 	/* Initialize the software rasterizer and helper modules.