surfaceflinger: cache HWC client targets and buffers
Remember HWC client targets and buffers, and make sure we send each
unique slot/handle pair only once. This allows the composer to
clone/register/retain each buffer only once.
Test: builds and boots
Change-Id: Ib485189043a9c132031e82d4d7380ace3bf9453d
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index 256b05d..d770f22 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -322,7 +322,7 @@
[[clang::warn_unused_result]] Error setActiveConfig(
const std::shared_ptr<const Config>& config);
[[clang::warn_unused_result]] Error setClientTarget(
- buffer_handle_t target,
+ uint32_t slot, buffer_handle_t target,
const android::sp<android::Fence>& acquireFence,
android_dataspace_t dataspace);
[[clang::warn_unused_result]] Error setColorMode(android_color_mode_t mode);
@@ -384,7 +384,8 @@
hwc2_layer_t getId() const { return mId; }
[[clang::warn_unused_result]] Error setCursorPosition(int32_t x, int32_t y);
- [[clang::warn_unused_result]] Error setBuffer(buffer_handle_t buffer,
+ [[clang::warn_unused_result]] Error setBuffer(uint32_t slot,
+ buffer_handle_t buffer,
const android::sp<android::Fence>& acquireFence);
[[clang::warn_unused_result]] Error setSurfaceDamage(
const android::Region& damage);