i965: Mark needed downsamples for msaa winsys buffers

Add function intel_renderbuffer_set_needs_downsample. It is a no-op
except on multisample winsys buffers shared with DRI2.

Mark the needed downsamples with the new function at two locations:
    - Immediately after drawing is complete.
    - After blitting.

Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
Signed-off-by: Chad Versace <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
index 700b0cfcf8a..53b72f6ef4d 100644
--- a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
+++ b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
@@ -163,8 +163,8 @@ do_blorp_blit(struct intel_context *intel, GLbitfield buffer_bit,
                            srcX0, srcY0, dstX0, dstY0, dstX1, dstY1,
                            mirror_x, mirror_y);
 
-   /* Mark the dst buffer as needing a HiZ resolve if necessary. */
    intel_renderbuffer_set_needs_hiz_resolve(intel_renderbuffer(dst_rb));
+   intel_renderbuffer_set_needs_downsample(intel_renderbuffer(dst_rb));
 }