[Mesa-dev] [PATCH v2] st/mesa: Use PIPE_USAGE_STAGING for GL_STATIC/DYNAMIC/STREAM_READ buffers
Michel Dänzer
michel at daenzer.net
Wed Sep 24 23:32:23 PDT 2014
From: Michel Dänzer <michel.daenzer at amd.com>
Such buffers can only be useful by reading from them with the CPU, so we
need to make sure CPU reads are fast.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84178
Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
v2: Add Bugzilla tag
src/mesa/state_tracker/st_cb_bufferobjects.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/mesa/state_tracker/st_cb_bufferobjects.c b/src/mesa/state_tracker/st_cb_bufferobjects.c
index e0cb979..d53602c 100644
--- a/src/mesa/state_tracker/st_cb_bufferobjects.c
+++ b/src/mesa/state_tracker/st_cb_bufferobjects.c
@@ -246,21 +246,23 @@ st_bufferobj_data(struct gl_context *ctx,
/* BufferData */
switch (usage) {
case GL_STATIC_DRAW:
- case GL_STATIC_READ:
case GL_STATIC_COPY:
default:
pipe_usage = PIPE_USAGE_DEFAULT;
break;
case GL_DYNAMIC_DRAW:
- case GL_DYNAMIC_READ:
case GL_DYNAMIC_COPY:
pipe_usage = PIPE_USAGE_DYNAMIC;
break;
case GL_STREAM_DRAW:
- case GL_STREAM_READ:
case GL_STREAM_COPY:
pipe_usage = PIPE_USAGE_STREAM;
break;
+ case GL_STATIC_READ:
+ case GL_DYNAMIC_READ:
+ case GL_STREAM_READ:
+ pipe_usage = PIPE_USAGE_STAGING;
+ break;
}
}
--
2.1.1
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