Module: Mesa
Branch: master
Commit: a077185ea9d685967844b68aa09da6bd8aa430da
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=a077185ea9d685967844b68aa09da6bd8aa430da
Author: Marek Olšák <marek.ol...@amd.com>
Date: Wed Oct 12 03:06:08 2016 +0200
gallium: add PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY
For performance tuning in drivers. It filters out window system
framebuffers and OpenGL renderbuffers.
radeonsi will use this to guess whether a depth buffer will be read
by a shader. There is no guarantee about what will actually happen.
This is a departure from PIPE_BIND flags which are defined to be strict
but they are useless in practice.
Acked-by: Roland Scheidegger <srol...@vmware.com>
Reviewed-by: Nicolai Hähnle <nicolai.haeh...@amd.com>
---
src/gallium/include/pipe/p_defines.h | 1 +
src/mesa/state_tracker/st_texture.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/gallium/include/pipe/p_defines.h
b/src/gallium/include/pipe/p_defines.h
index cdad415..746a822 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -450,6 +450,7 @@ enum pipe_flush_flags
*/
#define PIPE_RESOURCE_FLAG_MAP_PERSISTENT (1 << 0)
#define PIPE_RESOURCE_FLAG_MAP_COHERENT (1 << 1)
+#define PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY (1 << 2)
#define PIPE_RESOURCE_FLAG_DRV_PRIV (1 << 16) /* driver/winsys private */
#define PIPE_RESOURCE_FLAG_ST_PRIV (1 << 24) /* state-tracker/winsys
private */
diff --git a/src/mesa/state_tracker/st_texture.c
b/src/mesa/state_tracker/st_texture.c
index a2c36ac..7b72ffd 100644
--- a/src/mesa/state_tracker/st_texture.c
+++ b/src/mesa/state_tracker/st_texture.c
@@ -91,7 +91,8 @@ st_texture_create(struct st_context *st,
pt.array_size = layers;
pt.usage = PIPE_USAGE_DEFAULT;
pt.bind = bind;
- pt.flags = 0;
+ /* only set this for OpenGL textures, not renderbuffers */
+ pt.flags = PIPE_RESOURCE_FLAG_TEXTURING_MORE_LIKELY;
pt.nr_samples = nr_samples;
newtex = screen->resource_create(screen, &pt);
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