freedreno/a3xx: add support for S8 and Z32F_S8

Enables ARB_depth_buffer_float. There is no sampling support for
interleaved Z32F_S8, so we store the two textures separately, one as
Z32F, the other as S8. As a result, we need a lot of additional logic
for restores and transfers.

Signed-off-by: Ilia Mirkin <[email protected]>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_resource.h b/src/gallium/drivers/freedreno/freedreno_resource.h
index f80acb1e188..fdf3b8c7d7a 100644
--- a/src/gallium/drivers/freedreno/freedreno_resource.h
+++ b/src/gallium/drivers/freedreno/freedreno_resource.h
@@ -72,6 +72,9 @@ struct fd_resource {
 	/* buffer range that has been initialized */
 	struct util_range valid_buffer_range;
 
+	/* reference to the resource holding stencil data for a z32_s8 texture */
+	struct fd_resource *stencil;
+
 	struct list_head list;
 };