drm_hwcomposer: Add out-fence support
Add support for out-fences through the OUT_FENCE_PTR property.
Out-fences signal when their associated buffer may be read by a device.
Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
diff --git a/drmdisplaycomposition.h b/drmdisplaycomposition.h
index 13da19d..470bf7e 100644
--- a/drmdisplaycomposition.h
+++ b/drmdisplaycomposition.h
@@ -179,6 +179,14 @@
return planner_;
}
+ int take_out_fence() {
+ return out_fence_.Release();
+ }
+
+ void set_out_fence(int out_fence) {
+ out_fence_.Set(out_fence);
+ }
+
void Dump(std::ostringstream *out) const;
private:
@@ -205,6 +213,7 @@
int timeline_current_ = 0;
int timeline_squash_done_ = 0;
int timeline_pre_comp_done_ = 0;
+ UniqueFd out_fence_ = -1;
bool geometry_changed_;
std::vector<DrmHwcLayer> layers_;