When st_context_flush() is called with ST_FLUSH_WAIT,
the function will return after the fence is completed.
---
src/gallium/include/state_tracker/st_api.h | 1 +
src/mesa/state_tracker/st_manager.c | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/src/gallium/include/state_tracker/st_api.h
b/src/gallium/include/state_tracker/st_api.h
index daa1f23..a999774 100644
--- a/src/gallium/include/state_tracker/st_api.h
+++ b/src/gallium/include/state_tracker/st_api.h
@@ -160,6 +160,7 @@ enum st_context_resource_type {
*/
#define ST_FLUSH_FRONT (1 << 0)
#define ST_FLUSH_END_OF_FRAME (1 << 1)
+#define ST_FLUSH_WAIT (1 << 2)
/**
* Value to st_manager->get_param function.
diff --git a/src/mesa/state_tracker/st_manager.c
b/src/mesa/state_tracker/st_manager.c
index c3d8286..e663b01 100644
--- a/src/mesa/state_tracker/st_manager.c
+++ b/src/mesa/state_tracker/st_manager.c
@@ -504,6 +504,13 @@ st_context_flush(struct st_context_iface *stctxi, unsigned
flags,
}
st_flush(st, fence, pipe_flags);
+
+ if ((flags & ST_FLUSH_WAIT) && fence) {
+ st->pipe->screen->fence_finish(st->pipe->screen, NULL, *fence,
+ PIPE_TIMEOUT_INFINITE);
+ st->pipe->screen->fence_reference(st->pipe->screen, fence, NULL);
+ }
+
if (flags & ST_FLUSH_FRONT)
st_manager_flush_frontbuffer(st);
}
--
1.9.1
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