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-rw-r--r--libs/nativewindow/include/android/hardware_buffer.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/libs/nativewindow/include/android/hardware_buffer.h b/libs/nativewindow/include/android/hardware_buffer.h
index b2e8beac43..85a524988d 100644
--- a/libs/nativewindow/include/android/hardware_buffer.h
+++ b/libs/nativewindow/include/android/hardware_buffer.h
@@ -311,6 +311,16 @@ enum AHardwareBuffer_UsageFlags {
*/
AHARDWAREBUFFER_USAGE_GPU_MIPMAP_COMPLETE = 1UL << 26,
+ /**
+ * Usage: The buffer is used for front-buffer rendering. When
+ * front-buffering rendering is specified, different usages may adjust their
+ * behavior as a result. For example, when used as GPU_COLOR_OUTPUT the buffer
+ * will behave similar to a single-buffered window. When used with
+ * COMPOSER_OVERLAY, the system will try to prioritize the buffer receiving
+ * an overlay plane & avoid caching it in intermediate composition buffers.
+ */
+ AHARDWAREBUFFER_USAGE_FRONT_BUFFER = 1UL << 32,
+
AHARDWAREBUFFER_USAGE_VENDOR_0 = 1ULL << 28,
AHARDWAREBUFFER_USAGE_VENDOR_1 = 1ULL << 29,
AHARDWAREBUFFER_USAGE_VENDOR_2 = 1ULL << 30,