Mesa (master): swr: don't clear all dirty bits when changing so targets

[Ilia Mirkin]

Module: Mesa
Branch: master
Commit: 0a5e1b02cf6103037b488db5daa3097fbcfcf670
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=0a5e1b02cf6103037b488db5daa3097fbcfcf670

Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Fri Nov 25 21:08:16 2016 -0500

swr: don't clear all dirty bits when changing so targets

Among other things, blits would clear existing SO targets which would
cause a bunch of updates from u_blitter to be missed.

Fixes fbo-scissor-blit fbo, probably among many others.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Bruce Cherniak <bruce.cherniak at intel.com>

---

 src/gallium/drivers/swr/swr_state.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/drivers/swr/swr_state.cpp b/src/gallium/drivers/swr/swr_state.cpp
index 4119379..a67cb60 100644
--- a/src/gallium/drivers/swr/swr_state.cpp
+++ b/src/gallium/drivers/swr/swr_state.cpp
@@ -1570,7 +1570,7 @@ swr_set_so_targets(struct pipe_context *pipe,
 
    swr->num_so_targets = num_targets;
 
-   swr->dirty = SWR_NEW_SO;
+   swr->dirty |= SWR_NEW_SO;
 }