From ad017c2556dc04329e5abbc6599d84502549c3cc Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Wed, 7 Mar 2018 13:32:17 +0100
Subject: [PATCH] [dxvk] Implemented physical buffer view

---
 src/dxvk/dxvk_buffer_res.cpp | 25 ++++++++++++++++++++
 src/dxvk/dxvk_buffer_res.h   | 46 ++++++++++++++++++++++++++++++++++++
 2 files changed, 71 insertions(+)

diff --git a/src/dxvk/dxvk_buffer_res.cpp b/src/dxvk/dxvk_buffer_res.cpp
index 7d48bc23..caf151bb 100644
--- a/src/dxvk/dxvk_buffer_res.cpp
+++ b/src/dxvk/dxvk_buffer_res.cpp
@@ -39,4 +39,29 @@ namespace dxvk {
       m_vkd->vkDestroyBuffer(m_vkd->device(), m_handle, nullptr);
   }
   
+  
+  DxvkPhysicalBufferView::DxvkPhysicalBufferView(
+    const Rc<vk::DeviceFn>&         vkd,
+    const DxvkPhysicalBufferSlice&  slice,
+    const DxvkBufferViewCreateInfo& info)
+  : m_vkd(vkd), m_slice(slice.subSlice(info.rangeOffset, info.rangeLength)) {
+    VkBufferViewCreateInfo viewInfo;
+    viewInfo.sType  = VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO;
+    viewInfo.pNext  = nullptr;
+    viewInfo.flags  = 0;
+    viewInfo.buffer = m_slice.handle();
+    viewInfo.format = info.format;
+    viewInfo.offset = m_slice.offset();
+    viewInfo.range  = m_slice.length();
+    
+    if (m_vkd->vkCreateBufferView(m_vkd->device(), &viewInfo, nullptr, &m_view) != VK_SUCCESS)
+      throw DxvkError("DxvkBufferView::DxvkBufferView: Failed to create buffer view");
+  }
+  
+  
+  DxvkPhysicalBufferView::~DxvkPhysicalBufferView() {
+    m_vkd->vkDestroyBufferView(
+      m_vkd->device(), m_view, nullptr);
+  }
+  
 }
\ No newline at end of file
diff --git a/src/dxvk/dxvk_buffer_res.h b/src/dxvk/dxvk_buffer_res.h
index 86264e1e..4b67d8ff 100644
--- a/src/dxvk/dxvk_buffer_res.h
+++ b/src/dxvk/dxvk_buffer_res.h
@@ -203,4 +203,50 @@ namespace dxvk {
     return DxvkPhysicalBufferSlice(this, offset, length);
   }
   
+  
+  /**
+   * \brief Physical buffer view
+   * 
+   * Manages a texel buffer view for a physical
+   * buffer slice, which is used as the backing
+   * resource of a \c DxvkBufferView.
+   */
+  class DxvkPhysicalBufferView : public DxvkResource {
+    
+  public:
+    
+    DxvkPhysicalBufferView(
+      const Rc<vk::DeviceFn>&         vkd,
+      const DxvkPhysicalBufferSlice&  slice,
+      const DxvkBufferViewCreateInfo& info);
+    
+    ~DxvkPhysicalBufferView();
+    
+    /**
+     * \brief Vulkan buffer view handle
+     * \returns Vulkan buffer view handle
+     */
+    VkBufferView handle() const {
+      return m_view;
+    }
+    
+    /**
+     * \brief Physical buffer slice
+     * 
+     * The slice backing this buffer view.
+     * \returns Physical buffer slice
+     */
+    DxvkPhysicalBufferSlice slice() const {
+      return m_slice;
+    }
+    
+  private:
+    
+    Rc<vk::DeviceFn>        m_vkd;
+    DxvkPhysicalBufferSlice m_slice;
+    
+    VkBufferView m_view = VK_NULL_HANDLE;
+    
+  };
+  
 }
\ No newline at end of file