Support EGL_KHR_partial_update without EGL_EXT_buffer_age

Bug: 31334677
Test: manual && hwuimacro --onscreen partialdamage

Change-Id: I9b346b4053ec12c8a78a143a4dc0e708c44888a2

1 files changed, 6 insertions, 1 deletions

diff --git a/libs/hwui/renderthread/EglManager.cpp b/libs/hwui/renderthread/EglManager.cpp
index ac6a28fe6289..86731c9581be 100644
--- a/libs/hwui/renderthread/EglManager.cpp
+++ b/libs/hwui/renderthread/EglManager.cpp
@@ -134,7 +134,12 @@ void EglManager::initialize() {
 void EglManager::initExtensions() {
     auto extensions = StringUtils::split(
             eglQueryString(mEglDisplay, EGL_EXTENSIONS));
-    EglExtensions.bufferAge = extensions.has("EGL_EXT_buffer_age");
+    // For our purposes we don't care if EGL_BUFFER_AGE is a result of
+    // EGL_EXT_buffer_age or EGL_KHR_partial_update as our usage is covered
+    // under EGL_KHR_partial_update and we don't need the expanded scope
+    // that EGL_EXT_buffer_age provides.
+    EglExtensions.bufferAge = extensions.has("EGL_EXT_buffer_age")
+            || extensions.has("EGL_KHR_partial_update");
     EglExtensions.setDamage = extensions.has("EGL_KHR_partial_update");
     LOG_ALWAYS_FATAL_IF(!extensions.has("EGL_KHR_swap_buffers_with_damage"),
             "Missing required extension EGL_KHR_swap_buffers_with_damage");