commit 4d5bf2a0f5699f6519fa8cd047201d344d669bee
author Greg Daniel <egdaniel@google.com> Tue Dec 04 12:17:28 2018 -0500
committer Greg Daniel <egdaniel@google.com> Tue Dec 04 19:50:38 2018 +0000
tree 074f9f6588533140820eef99e0235070e756bcc0
parent f660c012b080496eb70ea77f141f346e80bb6cfa

Prefer using 3 buffers in vulkan swapchain.

Test: manual build and running.
Bug: 119687951

Change-Id: I799955d8e035d01acb991417e95e424848fe711f

libs/hwui/renderthread/VulkanManager.cpp

diff --git a/libs/hwui/renderthread/VulkanManager.cpp b/libs/hwui/renderthread/VulkanManager.cpp
index 9a6df75..ff21f2e 100644
--- a/libs/hwui/renderthread/VulkanManager.cpp
+++ b/libs/hwui/renderthread/VulkanManager.cpp
@@ -744,7 +744,7 @@
     surface->mWindowWidth = extent.width;
     surface->mWindowHeight = extent.height;
 
-    uint32_t imageCount = caps.minImageCount + 2;
+    uint32_t imageCount = std::max<uint32_t>(3, caps.minImageCount);
     if (caps.maxImageCount > 0 && imageCount > caps.maxImageCount) {
         // Application must settle for fewer images than desired:
         imageCount = caps.maxImageCount;