So far the frontbuffer was only being flushed on st_glFlush and
st_glFinish, however, a co-state tracker may need to make sure that
any frontbuffer changes are already on its way to the actual front.
The dri2 state tracker will need this for event-driven GL applications
to resize properly (It could also be done calling "dri_flush_frontbuffer",
but that way we would flush unnecessarily in the double-buffered case).
Additionally this patch avoids flushing the mesa rendering cache if
PIPE_FLUSH_RENDER_CACHE wasn't specified.
---
src/mesa/state_tracker/st_cb_flush.c | 15 ++++++---------
1 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/src/mesa/state_tracker/st_cb_flush.c
b/src/mesa/state_tracker/st_cb_flush.c
index 1329f80..0ddfce4 100644
--- a/src/mesa/state_tracker/st_cb_flush.c
+++ b/src/mesa/state_tracker/st_cb_flush.c
@@ -91,7 +91,8 @@ display_front_buffer(struct st_context *st)
void st_flush( struct st_context *st, uint pipeFlushFlags,
struct pipe_fence_handle **fence )
{
- FLUSH_CURRENT(st->ctx, 0);
+ if (pipeFlushFlags & PIPE_FLUSH_RENDER_CACHE)
+ FLUSH_CURRENT(st->ctx, 0);
/* Release any vertex buffers that might potentially be accessed in
* successive frames:
@@ -102,6 +103,10 @@ void st_flush( struct st_context *st, uint pipeFlushFlags,
util_gen_mipmap_flush(st->gen_mipmap);
st->pipe->flush( st->pipe, pipeFlushFlags, fence );
+
+ if ((pipeFlushFlags & PIPE_FLUSH_FRAME) &&
+ is_front_buffer_dirty(st))
+ display_front_buffer(st);
}
@@ -135,10 +140,6 @@ static void st_glFlush(GLcontext *ctx)
* problems that need to be fixed elsewhere.
*/
st_flush(st, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL);
-
- if (is_front_buffer_dirty(st)) {
- display_front_buffer(st);
- }
}
@@ -150,10 +151,6 @@ static void st_glFinish(GLcontext *ctx)
struct st_context *st = ctx->st;
st_finish(st);
-
- if (is_front_buffer_dirty(st)) {
- display_front_buffer(st);
- }
}
--
1.6.4.4
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