r300: fix clear mask to not use sw if not necessary

diff --git a/src/mesa/drivers/dri/r300/r300_ioctl.c b/src/mesa/drivers/dri/r300/r300_ioctl.c
index 4ae0b45..4e913db 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_ioctl.c
+++ b/src/mesa/drivers/dri/r300/r300_ioctl.c
@@ -646,6 +646,8 @@ static void r300Clear(GLcontext * ctx, GLbitfield mask)
 
        if (colorMask == ~0)
          tri_mask |= (mask & BUFFER_BITS_COLOR);
+       else
+         tri_mask |= (mask & (BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT));
 
 
        /* HW stencil */