Merge "Vulkan: Work-around Android start-up race condition" am: 9d98433a58 am: 985bb9b8b4 am: a415437121 am: 35b530cfaf
Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1902215
Change-Id: I09818964380feaa55c94a571d0e027192b6f2925
diff --git a/vulkan/libvulkan/api.cpp b/vulkan/libvulkan/api.cpp
index d1cd397..fa3b260 100644
--- a/vulkan/libvulkan/api.cpp
+++ b/vulkan/libvulkan/api.cpp
@@ -965,6 +965,13 @@
VkResult result = EnumerateDeviceExtensionProperties(physical_dev, nullptr,
&count, nullptr);
if (result == VK_SUCCESS && count) {
+ // Work-around a race condition during Android start-up, that can result
+ // in the second call to EnumerateDeviceExtensionProperties having
+ // another extension. That causes the second call to return
+ // VK_INCOMPLETE. A work-around is to add 1 to "count" and ask for one
+ // more extension property. See: http://anglebug.com/6715 and
+ // internal-to-Google b/206733351.
+ count++;
driver_extensions_ = AllocateDriverExtensionArray(count);
result = (driver_extensions_)
? EnumerateDeviceExtensionProperties(