From: Michel Dänzer <michel.daen...@amd.com> The latter currently implies CPU access, so we have to avoid getting uncacheable memory.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88658 Cc: "10.3 10.4" <mesa-sta...@lists.freedestkop.org> Signed-off-by: Michel Dänzer <michel.daen...@amd.com> --- src/mesa/state_tracker/st_cb_bufferobjects.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/src/mesa/state_tracker/st_cb_bufferobjects.c b/src/mesa/state_tracker/st_cb_bufferobjects.c index 55f3644..90f786c 100644 --- a/src/mesa/state_tracker/st_cb_bufferobjects.c +++ b/src/mesa/state_tracker/st_cb_bufferobjects.c @@ -256,8 +256,15 @@ st_bufferobj_data(struct gl_context *ctx, break; case GL_STREAM_DRAW: case GL_STREAM_COPY: - pipe_usage = PIPE_USAGE_STREAM; - break; + /* XXX: Remove this test and fall-through when we have PBO unpacking + * acceleration. Right now, PBO unpacking is done by the CPU, so we + * have to make sure CPU reads are fast. + */ + if (target != GL_PIXEL_UNPACK_BUFFER_ARB) { + pipe_usage = PIPE_USAGE_STREAM; + break; + } + /* fall through */ case GL_STATIC_READ: case GL_DYNAMIC_READ: case GL_STREAM_READ: -- 2.1.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
