[dxvk] Added buffer creation

src/dxvk/dxvk_buffer.cpp

@@ -0,0 +1,38 @@
+#include "dxvk_buffer.h"
+
+namespace dxvk {
+  
+  DxvkBuffer::DxvkBuffer(
+    const Rc<vk::DeviceFn>&     vkd,
+    const DxvkBufferCreateInfo& createInfo,
+          DxvkMemoryAllocator&  memAlloc,
+          VkMemoryPropertyFlags memFlags)
+  : m_vkd(vkd), m_info(createInfo) {
+    
+    VkBufferCreateInfo info;
+    info.sType                 = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+    info.pNext                 = nullptr;
+    info.flags                 = 0;
+    info.size                  = createInfo.size;
+    info.usage                 = createInfo.usage;
+    info.sharingMode           = VK_SHARING_MODE_EXCLUSIVE;
+    info.queueFamilyIndexCount = 0;
+    info.pQueueFamilyIndices   = nullptr;
+    
+    if (m_vkd->vkCreateBuffer(m_vkd->device(),
+          &info, nullptr, &m_buffer) != VK_SUCCESS)
+      throw DxvkError("DxvkBuffer::DxvkBuffer: Failed to create buffer");
+    
+    VkMemoryRequirements memReq;
+    m_vkd->vkGetBufferMemoryRequirements(
+      m_vkd->device(), m_buffer, &memReq);
+    m_memory = memAlloc.alloc(memReq, memFlags);
+  }
+  
+  
+  DxvkBuffer::~DxvkBuffer() {
+    if (m_buffer != VK_NULL_HANDLE)
+      m_vkd->vkDestroyBuffer(m_vkd->device(), m_buffer, nullptr);
+  }
+  
+}

src/dxvk/dxvk_buffer.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "dxvk_memory.h"
 #include "dxvk_resource.h"
 
 namespace dxvk {
@@ -13,7 +14,10 @@ namespace dxvk {
   struct DxvkBufferCreateInfo {
     
     /// Size of the buffer, in bytes
-    VkDeviceSize bufferSize;
+    VkDeviceSize size;
+    
+    /// Buffer usage flags
+    VkBufferUsageFlags usage;
     
   };
   
@@ -21,17 +25,55 @@ namespace dxvk {
   /**
    * \brief DXVK buffer
    * 
-   * A simple buffer resource that stores linear data.
+   * A simple buffer resource that stores
+   * linear data. Can be mapped to host
+   * memory.
    */
   class DxvkBuffer : public DxvkResource {
     
   public:
     
+    DxvkBuffer(
+      const Rc<vk::DeviceFn>&     vkd,
+      const DxvkBufferCreateInfo& createInfo,
+            DxvkMemoryAllocator&  memAlloc,
+            VkMemoryPropertyFlags memFlags);
+    ~DxvkBuffer();
     
+    /**
+     * \brief Buffer handle
+     * \returns Buffer handle
+     */
+    VkBuffer handle() const {
+      return m_buffer;
+    }
+    
+    /**
+     * \brief Buffer properties
+     * \returns Buffer properties
+     */
+    const DxvkBufferCreateInfo& info() const {
+      return m_info;
+    }
+    
+    /**
+     * \brief Map pointer
+     * 
+     * If the buffer has been created on a host-visible
+     * memory type, the buffer memory is mapped and can
+     * be accessed by the host.
+     * \returns Pointer to mapped memory region
+     */
+    void* mapPtr() const {
+      return m_memory.mapPtr();
+    }
     
   private:
     
-    
+    Rc<vk::DeviceFn>      m_vkd;
+    DxvkBufferCreateInfo  m_info;
+    DxvkMemory            m_memory;
+    VkBuffer              m_buffer = VK_NULL_HANDLE;
     
   };
   

src/dxvk/dxvk_device.cpp

@@ -47,6 +47,14 @@ namespace dxvk {
   }
   
   
+  Rc<DxvkBuffer> DxvkDevice::createBuffer(
+    const DxvkBufferCreateInfo& createInfo,
+          VkMemoryPropertyFlags memoryType) {
+    return new DxvkBuffer(m_vkd,
+      createInfo, m_memory, memoryType);
+  }
+  
+  
   Rc<DxvkImage> DxvkDevice::createImage(
     const DxvkImageCreateInfo&  createInfo,
           VkMemoryPropertyFlags memoryType) {

src/dxvk/dxvk_device.h

@@ -85,6 +85,17 @@ namespace dxvk {
     Rc<DxvkFramebuffer> createFramebuffer(
       const DxvkRenderTargets& renderTargets);
     
+    /**
+     * \brief Creates a buffer object
+     * 
+     * \param [in] createInfo Buffer create info
+     * \param [in] memoryType Memory type flags
+     * \returns The buffer object
+     */
+    Rc<DxvkBuffer> createBuffer(
+      const DxvkBufferCreateInfo& createInfo,
+            VkMemoryPropertyFlags memoryType);
+    
     /**
      * \brief Creates an image object
      * 

src/dxvk/meson.build

@@ -1,5 +1,6 @@
 dxvk_src = files([
   'dxvk_adapter.cpp',
+  'dxvk_buffer.cpp',
   'dxvk_cmdlist.cpp',
   'dxvk_compute.cpp',
   'dxvk_context.cpp',