[Mesa-dev] [PATCH 7/9] r600g/compute: map only against intermediate buffers

[Bruno Jiménez]

With this we can assure that mapped buffers will never change
its position when relocating the pool.

This patch should finally solve the mapping bug.
---
 src/gallium/drivers/r600/evergreen_compute.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_compute.c b/src/gallium/drivers/r600/evergreen_compute.c
index 9123a40..e5967b5 100644
--- a/src/gallium/drivers/r600/evergreen_compute.c
+++ b/src/gallium/drivers/r600/evergreen_compute.c
@@ -970,14 +970,12 @@ void *r600_compute_global_transfer_map(
 	struct pipe_resource *dst;
 	unsigned offset = box->x;
 
-	if (buffer->chunk->real_buffer) {
-		dst = (struct pipe_resource*)buffer->chunk->real_buffer;
-	}
-	else {
-		dst = (struct pipe_resource*)buffer->chunk->pool->bo;
-		offset += (buffer->chunk->start_in_dw * 4);
+	if (buffer->chunk->start_in_dw != -1) {
+		compute_memory_demote_item(pool, buffer->chunk, ctx_);
 	}
 
+	dst = (struct pipe_resource*)buffer->chunk->real_buffer;
+
 	if (usage & PIPE_TRANSFER_READ)
 		buffer->chunk->status |= ITEM_MAPPED_FOR_READING;
 
-- 
2.0.0