[dxvk] Add usage property to buffer views

And pass it to the Vulkan driver depending on maintenance5 support.

src/d3d11/d3d11_context.cpp

@@ -532,6 +532,7 @@ namespace dxvk {
         bufferViewInfo.format      = rawFormat;
         bufferViewInfo.rangeOffset = 0;
         bufferViewInfo.rangeLength = bufferInfo.size;
+        bufferViewInfo.usage       = VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT;
 
         Rc<DxvkBufferView> bufferView = m_device->createBufferView(buffer,
           bufferViewInfo);

src/d3d11/d3d11_view_srv.cpp

@@ -43,6 +43,7 @@ namespace dxvk {
 
       // Fill in buffer view info
       DxvkBufferViewCreateInfo viewInfo;
+      viewInfo.usage = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
 
       if (bufInfo.Flags & D3D11_BUFFEREX_SRV_FLAG_RAW) {
         // Raw buffer view. We'll represent this as a

src/d3d11/d3d11_view_uav.cpp

@@ -26,6 +26,7 @@ namespace dxvk {
       auto buffer = static_cast<D3D11Buffer*>(pResource);
       
       DxvkBufferViewCreateInfo viewInfo;
+      viewInfo.usage = VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT;
       
       if (pDesc->Buffer.Flags & D3D11_BUFFEREX_SRV_FLAG_RAW) {
         viewInfo.format      = VK_FORMAT_R32_UINT;
@@ -454,6 +455,7 @@ namespace dxvk {
     viewInfo.format = VK_FORMAT_UNDEFINED;
     viewInfo.rangeOffset = 0;
     viewInfo.rangeLength = sizeof(uint32_t);
+    viewInfo.usage = VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT;
 
     return device->createBufferView(buffer, viewInfo);
   }

src/d3d9/d3d9_format_helpers.cpp

@@ -96,6 +96,7 @@ namespace dxvk {
     bufferViewInfo.format      = bufferFormat;
     bufferViewInfo.rangeOffset = srcSlice.offset();
     bufferViewInfo.rangeLength = srcSlice.length();
+    bufferViewInfo.usage = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
     auto tmpBufferView = m_device->createBufferView(srcSlice.buffer(), bufferViewInfo);
 
     m_context->setSpecConstant(VK_PIPELINE_BIND_POINT_COMPUTE, 0, specConstantValue);

src/dxvk/dxvk_buffer.cpp

@@ -240,14 +240,18 @@ namespace dxvk {
 
   
   DxvkBufferView::DxvkBufferView(
-    const Rc<vk::DeviceFn>&         vkd,
+          DxvkDevice*               device,
     const Rc<DxvkBuffer>&           buffer,
     const DxvkBufferViewCreateInfo& info)
-  : m_vkd(vkd), m_info(info), m_buffer(buffer),
+  : m_vkd(device->vkd()), m_info(info), m_buffer(buffer),
+    m_usage       (info.usage),
     m_bufferSlice (getSliceHandle()),
     m_bufferView  (VK_NULL_HANDLE) {
     if (m_info.format != VK_FORMAT_UNDEFINED)
       m_bufferView = createBufferView(m_bufferSlice);
+
+    if (!device->features().khrMaintenance5.maintenance5)
+      m_usage = 0;
   }
   
   
@@ -266,12 +270,18 @@ namespace dxvk {
   
   VkBufferView DxvkBufferView::createBufferView(
     const DxvkBufferSliceHandle& slice) {
+    VkBufferUsageFlags2CreateInfoKHR viewFlags = { VK_STRUCTURE_TYPE_BUFFER_USAGE_FLAGS_2_CREATE_INFO_KHR };
+    viewFlags.usage = m_usage;
+
     VkBufferViewCreateInfo viewInfo = { VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO };
     viewInfo.buffer = slice.handle;
     viewInfo.format = m_info.format;
     viewInfo.offset = slice.offset;
     viewInfo.range  = slice.length;
 
+    if (!m_usage)
+      viewInfo.pNext = &viewFlags;
+
     VkBufferView result = VK_NULL_HANDLE;
 
     if (m_vkd->vkCreateBufferView(m_vkd->device(),

src/dxvk/dxvk_buffer.h

@@ -52,6 +52,9 @@ namespace dxvk {
     
     /// Size of the buffer region to include in the view
     VkDeviceSize rangeLength;
+
+    /// Buffer view usage flags
+    VkBufferUsageFlags usage;
   };
 
 
@@ -577,7 +580,7 @@ namespace dxvk {
   public:
     
     DxvkBufferView(
-      const Rc<vk::DeviceFn>&         vkd,
+            DxvkDevice*               device,
       const Rc<DxvkBuffer>&           buffer,
       const DxvkBufferViewCreateInfo& info);
     
@@ -676,6 +679,7 @@ namespace dxvk {
     Rc<vk::DeviceFn>          m_vkd;
     DxvkBufferViewCreateInfo  m_info;
     Rc<DxvkBuffer>            m_buffer;
+    VkBufferUsageFlags        m_usage;
 
     DxvkBufferSliceHandle     m_bufferSlice;
     VkBufferView              m_bufferView;

src/dxvk/dxvk_context.cpp

@@ -873,10 +873,12 @@ namespace dxvk {
     viewInfo.format = format;
     viewInfo.rangeOffset = dstBufferOffset;
     viewInfo.rangeLength = dstBufferSlice.length;
+    viewInfo.usage = VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT;
     Rc<DxvkBufferView> dstView = m_device->createBufferView(dstBuffer, viewInfo);
 
     viewInfo.rangeOffset = srcBufferOffset;
     viewInfo.rangeLength = srcBufferSlice.length;
+    viewInfo.usage = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
     Rc<DxvkBufferView> srcView;
 
     if (srcBuffer == dstBuffer
@@ -1066,11 +1068,13 @@ namespace dxvk {
     tmpViewInfoD.format      = dataFormatD;
     tmpViewInfoD.rangeOffset = 0;
     tmpViewInfoD.rangeLength = dataSizeD;
+    tmpViewInfoD.usage       = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
 
     DxvkBufferViewCreateInfo tmpViewInfoS;
     tmpViewInfoS.format      = dataFormatS;
     tmpViewInfoS.rangeOffset = dataSizeD;
     tmpViewInfoS.rangeLength = dataSizeS;
+    tmpViewInfoS.usage       = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
 
     auto tmpBufferViewD = m_device->createBufferView(tmpBuffer, tmpViewInfoD);
     auto tmpBufferViewS = m_device->createBufferView(tmpBuffer, tmpViewInfoS);

src/dxvk/dxvk_device.cpp

@@ -167,7 +167,7 @@ namespace dxvk {
   Rc<DxvkBufferView> DxvkDevice::createBufferView(
     const Rc<DxvkBuffer>&           buffer,
     const DxvkBufferViewCreateInfo& createInfo) {
-    return new DxvkBufferView(m_vkd, buffer, createInfo);
+    return new DxvkBufferView(this, buffer, createInfo);
   }
   
   

src/dxvk/hud/dxvk_hud_renderer.cpp

@@ -254,6 +254,7 @@ namespace dxvk::hud {
     info.format         = VK_FORMAT_R8_UINT;
     info.rangeOffset    = 0;
     info.rangeLength    = m_dataBuffer->info().size;
+    info.usage          = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
 
     return m_device->createBufferView(m_dataBuffer, info);
   }
@@ -278,6 +279,7 @@ namespace dxvk::hud {
     info.format         = VK_FORMAT_UNDEFINED;
     info.rangeOffset    = 0;
     info.rangeLength    = m_fontBuffer->info().size;
+    info.usage          = VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT;
 
     return m_device->createBufferView(m_fontBuffer, info);
   }