[Mesa-dev] [PATCH (9.1)] Revert "r600g: re-enable handling of DISCARD_RANGE, improving performance"

[Andreas Boll]

This reverts commit 1eedebc65b02130ef7a27062a1ed67972a317a08.

Until we have a proper fix disable DISCARD_RANGE for now.
It fixes the garbled ui in TF2.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58042

Cc: Marek Olšák <maraeo at gmail.com>
---
 src/gallium/drivers/r600/r600_buffer.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gallium/drivers/r600/r600_buffer.c b/src/gallium/drivers/r600/r600_buffer.c
index 6df0d91..82630af 100644
--- a/src/gallium/drivers/r600/r600_buffer.c
+++ b/src/gallium/drivers/r600/r600_buffer.c
@@ -137,6 +137,7 @@ static void *r600_buffer_transfer_map(struct pipe_context *ctx,
 			r600_set_constants_dirty_if_bound(rctx, rbuffer);
 		}
 	}
+#if 0 /* this is broken (see Bug 53130) */
 	else if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
 		 !(usage & PIPE_TRANSFER_UNSYNCHRONIZED) &&
 		 rctx->screen->has_streamout &&
@@ -161,6 +162,7 @@ static void *r600_buffer_transfer_map(struct pipe_context *ctx,
 			}
 		}
 	}
+#endif
 
 	/* mmap and synchronize with rings */
 	data = r600_buffer_mmap_sync_with_rings(rctx, rbuffer, usage);
-- 
1.7.10.4