Fixes for Vulkan

Source/Engine/GraphicsDevice/Vulkan/GPUBufferVulkan.cpp

@@ -25,7 +25,8 @@ void GPUBufferViewVulkan::Init(GPUDeviceVulkan* device, GPUBufferVulkan* owner,
         viewInfo.format = RenderToolsVulkan::ToVulkanFormat(format);
         viewInfo.offset = 0;
         viewInfo.range = Size;
-        ASSERT_LOW_LAYER(viewInfo.format != VK_FORMAT_UNDEFINED);
+        if (viewInfo.format == VK_FORMAT_UNDEFINED)
+            return; // Skip for structured buffers that use custom structure type and have unknown format
         VALIDATE_VULKAN_RESULT(vkCreateBufferView(device->Device, &viewInfo, nullptr, &View));
     }
 }

Source/Engine/GraphicsDevice/Vulkan/GPUContextVulkan.cpp

@@ -1309,6 +1309,11 @@ void GPUContextVulkan::UpdateBuffer(GPUBuffer* buffer, const void* data, uint32
 
     const auto bufferVulkan = static_cast<GPUBufferVulkan*>(buffer);
 
+    // Memory transfer barrier
+    // TODO: batch pipeline barriers
+    const VkMemoryBarrier barrierBefore = { VK_STRUCTURE_TYPE_MEMORY_BARRIER, nullptr, VK_ACCESS_MEMORY_WRITE_BIT, VK_ACCESS_MEMORY_READ_BIT };
+    vkCmdPipelineBarrier(cmdBuffer->GetHandle(), VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 1, &barrierBefore, 0, nullptr, 0, nullptr);
+
     // Use direct update for small buffers
     if (size <= 16 * 1024)
     {
@@ -1331,6 +1336,11 @@ void GPUContextVulkan::UpdateBuffer(GPUBuffer* buffer, const void* data, uint32
 
         _device->StagingManager.ReleaseBuffer(cmdBuffer, staging);
     }
+
+    // Memory transfer barrier
+    // TODO: batch pipeline barriers
+    const VkMemoryBarrier barrierAfter = { VK_STRUCTURE_TYPE_MEMORY_BARRIER, nullptr, VK_ACCESS_TRANSFER_WRITE_BIT, VK_ACCESS_MEMORY_READ_BIT | VK_ACCESS_MEMORY_WRITE_BIT };
+    vkCmdPipelineBarrier(cmdBuffer->GetHandle(), VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 1, &barrierAfter, 0, nullptr, 0, nullptr);
 }
 
 void GPUContextVulkan::CopyBuffer(GPUBuffer* dstBuffer, GPUBuffer* srcBuffer, uint32 size, uint32 dstOffset, uint32 srcOffset)

Source/Engine/GraphicsDevice/Vulkan/GPUSwapChainVulkan.cpp

@@ -195,6 +195,7 @@ bool GPUSwapChainVulkan::CreateSwapChain(int32 width, int32 height)
         LOG(Warning, "Failed to create Vulkan surface.");
         return true;
     }
+    _memoryUsage = 1;
 
     const auto& gpu = _device->Adapter->Gpu;
 

Source/Engine/Particles/Particles.cpp

@@ -702,7 +702,6 @@ void DrawEmitterGPU(RenderContext& renderContext, ParticleBuffer* buffer, DrawCa
             // TODO: model LOD picking for particles?
             int32 lodIndex = 0;
             ModelLOD& lod = model->LODs[lodIndex];
-            drawCalls += lod.Meshes.Count();
             for (int32 meshIndex = 0; meshIndex < lod.Meshes.Count(); meshIndex++)
             {
                 Mesh& mesh = lod.Meshes[meshIndex];