[ATOM][RHI][Vulkan][Android] - pick the correct share mode based on f… (#2166)

* [ATOM][RHI][Vulkan][Android] - pick the correct share mode based on flags and size of queue families Signed-off-by: Peng <tonypeng@amazon.com>
2021-07-20 11:24:35 -07:00
parent a08f850766
commit 216542c939
1 changed files with 6 additions and 5 deletions
@@ -815,11 +815,12 @@ namespace AZ
            createInfo.size = descriptor.m_byteCount;
            createInfo.usage = GetBufferUsageFlagBitsUnderRestrictions(descriptor.m_bindFlags);
            // Trying to guess here if the buffers are going to be used as attachments. Maybe it would be better to add an explicit flag in the descriptor.
-            createInfo.sharingMode =
-                RHI::CheckBitsAny(
-                    descriptor.m_bindFlags,
-                    RHI::BufferBindFlags::ShaderWrite | RHI::BufferBindFlags::Predication | RHI::BufferBindFlags::Indirect)
-                ? VK_SHARING_MODE_EXCLUSIVE
+            createInfo.sharingMode = 
+                (RHI::CheckBitsAny(
+                    descriptor.m_bindFlags, 
+                    RHI::BufferBindFlags::ShaderWrite | RHI::BufferBindFlags::Predication | RHI::BufferBindFlags::Indirect) || 
+                    (queueFamilies.size()) <= 1) 
+                ? VK_SHARING_MODE_EXCLUSIVE 
                : VK_SHARING_MODE_CONCURRENT;
            createInfo.queueFamilyIndexCount = static_cast<uint32_t>(queueFamilies.size());
            createInfo.pQueueFamilyIndices = queueFamilies.empty() ? nullptr : queueFamilies.data();