初步封装Vulkan的Instance,PhysicalDevice,Device,CommandBuffer

example/Vulkan/CMakeLists.txt

@@ -1,4 +1,7 @@
 add_executable(VulkanTest   main.cpp
-                            VKInstance.cpp)
+                            VKInstance.cpp
+                            VKPhysicalDevice.cpp
+                            VKDevice.cpp
+                            VKCommandBuffer.cpp)
 
 target_link_libraries(VulkanTest PRIVATE ${ULRE} ${VULKAN_LIB})

example/Vulkan/VK.h

@@ -0,0 +1,9 @@
+#ifndef HGL_GRAPH_VULKAN_INCLUDE
+#define HGL_GRAPH_VULKAN_INCLUDE
+
+#include<vulkan/vulkan.h>
+
+#define VK_NAMESPACE_BEGIN  namespace hgl{namespace graph{namespace vulkan{
+#define VK_NAMESPACE_END    }}}
+
+#endif//HGL_GRAPH_VULKAN_INCLUDE

example/Vulkan/VKCommandBuffer.cpp

@@ -0,0 +1,9 @@
+#include"VKCommandBuffer.h"
+
+VK_NAMESPACE_BEGIN
+CommandBuffer::~CommandBuffer()
+{
+    VkCommandBuffer cmd_bufs[1] = {buf};
+    vkFreeCommandBuffers(device, pool, 1, cmd_bufs);
+}
+VK_NAMESPACE_END

example/Vulkan/VKCommandBuffer.h

@@ -0,0 +1,19 @@
+#ifndef HGL_GRAPH_VULKAN_COMMAND_BUFFER_INCLUDE
+#define HGL_GRAPH_VULKAN_COMMAND_BUFFER_INCLUDE
+
+#include"VK.h"
+
+VK_NAMESPACE_BEGIN
+    class CommandBuffer
+    {
+        VkDevice device;
+        VkCommandPool pool;
+        VkCommandBuffer buf;
+
+    public:
+
+        CommandBuffer(VkDevice dev,VkCommandPool cp,VkCommandBuffer cb){device=dev;pool=cp;buf=cb;}
+        ~CommandBuffer();
+    };//class CommandBuffer
+VK_NAMESPACE_END
+#endif//HGL_GRAPH_VULKAN_COMMAND_BUFFER_INCLUDE

example/Vulkan/VKDevice.cpp

@@ -0,0 +1,53 @@
+#include"VKDevice.h"
+#include"VKCommandBuffer.h"
+
+VK_NAMESPACE_BEGIN
+Device::Device(VkDevice dev,int family_index)
+{
+    device=dev;
+
+    cmd_pool=nullptr;
+
+    if(!device)
+        return;
+
+    {
+        VkCommandPoolCreateInfo cmd_pool_info = {};
+
+        cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+        cmd_pool_info.pNext = NULL;
+        cmd_pool_info.queueFamilyIndex = family_index;
+        cmd_pool_info.flags = 0;
+
+        VkResult res = vkCreateCommandPool(device, &cmd_pool_info, nullptr, &cmd_pool);
+    }
+}
+
+Device::~Device()
+{
+    vkDestroyCommandPool(device,cmd_pool,nullptr);
+    vkDestroyDevice(device,nullptr);
+}
+
+CommandBuffer *Device::CreateCommandBuffer()
+{
+    if(!cmd_pool)
+        return(nullptr);
+
+    VkCommandBufferAllocateInfo cmd = {};
+    cmd.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+    cmd.pNext = nullptr;
+    cmd.commandPool = cmd_pool;
+    cmd.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+    cmd.commandBufferCount = 1;
+
+    VkCommandBuffer cmd_buf;
+
+    VkResult res = vkAllocateCommandBuffers(device, &cmd, &cmd_buf);
+
+    if(res!=VK_SUCCESS)
+        return(nullptr);
+
+    return(new CommandBuffer(device,cmd_pool,cmd_buf));
+}
+VK_NAMESPACE_END

example/Vulkan/VKDevice.h

@@ -0,0 +1,27 @@
+#ifndef HGL_GRAPH_VULKAN_DEVICE_INCLUDE
+#define HGL_GRAPH_VULKAN_DEVICE_INCLUDE
+
+#include"VK.h"
+
+VK_NAMESPACE_BEGIN
+
+    class CommandBuffer;
+
+    /**
+     * Vulkan设备对象封装
+     */
+    class Device
+    {
+        VkDevice device;
+        VkCommandPool cmd_pool;                                                 ///<命令池，用于创建命令缓冲区。由于不知道创建多个是否有好处，所以暂时设计为一个设备只有一个。
+
+    public:
+
+        Device(VkDevice,int);
+        virtual ~Device();
+
+        CommandBuffer *CreateCommandBuffer();
+    };//class Device
+VK_NAMESPACE_END
+
+#endif//HGL_GRAPH_VULKAN_DEVICE_INCLUDE

example/Vulkan/VKInstance.cpp

@@ -29,6 +29,8 @@ Instance::Instance(const UTF8String &an)
 
 Instance::~Instance()
 {
+    physical_devices.Clear();
+
     if(inst)
         vkDestroyInstance(inst,nullptr);
 }
@@ -46,6 +48,23 @@ bool Instance::Init()
         return(false);
     }
 
+    {
+        uint32_t gpu_count = 1;
+        res = vkEnumeratePhysicalDevices(inst, &gpu_count, nullptr);
+
+        if(res!=VK_SUCCESS)
+            return(false);
+
+        VkPhysicalDevice *pd_list=new VkPhysicalDevice[gpu_count];
+        physical_devices.SetCount(gpu_count);
+        vkEnumeratePhysicalDevices(inst, &gpu_count, pd_list);
+
+        for(uint32_t i=0;i<gpu_count;i++)
+            physical_devices.Add(new PhysicalDevice(pd_list[i]));
+
+        delete[] pd_list;
+    }
+
     return(true);
 }
 

example/Vulkan/VKInstance.h

@@ -2,10 +2,9 @@
 #define HGL_GRAPH_VULKAN_INSTANCE_INCLUDE
 
 #include<hgl/type/BaseString.h>
-#include<vulkan/vulkan.h>
-
-#define VK_NAMESPACE_BEGIN  namespace hgl{namespace graph{namespace vulkan{
-#define VK_NAMESPACE_END    }}}
+#include<hgl/type/List.h>
+#include"VK.h"
+#include"VKPhysicalDevice.h"
 
 VK_NAMESPACE_BEGIN
     class Instance
@@ -15,6 +14,8 @@ VK_NAMESPACE_BEGIN
 
         VkInstance inst;
 
+        ObjectList<PhysicalDevice> physical_devices;
+
     private:
 
         UTF8String app_name;
@@ -25,6 +26,8 @@ VK_NAMESPACE_BEGIN
         virtual ~Instance();
 
         virtual bool Init();
+
+        const ObjectList<PhysicalDevice> & GetDeviceList()const{return physical_devices;}
     };//class Instance
 VK_NAMESPACE_END
 #endif//HGL_GRAPH_VULKAN_INSTANCE_INCLUDE

example/Vulkan/VKPhysicalDevice.cpp

@@ -0,0 +1,82 @@
+#include"VKPhysicalDevice.h"
+#include"VKDevice.h"
+
+VK_NAMESPACE_BEGIN
+
+PhysicalDevice::PhysicalDevice(VkPhysicalDevice pd)
+{
+    physical_device=pd;
+
+    if(!pd)return;
+
+    vkGetPhysicalDeviceFeatures(physical_device,&features);
+    vkGetPhysicalDeviceProperties(physical_device,&properties);
+    vkGetPhysicalDeviceMemoryProperties(physical_device,&memory_properties);
+
+    {
+        uint32_t family_count;
+        vkGetPhysicalDeviceQueueFamilyProperties(physical_device,&family_count,nullptr);
+        family_properties.SetCount(family_count);
+        vkGetPhysicalDeviceQueueFamilyProperties(physical_device,&family_count,family_properties.GetData());
+    }
+}
+
+PhysicalDevice::~PhysicalDevice()
+{
+}
+
+int PhysicalDevice::QueueFamilyProperties(VkQueueFlags flag) const
+{
+    const int count=family_properties.GetCount();
+
+    if(count<=0)
+        return(-1);
+
+    VkQueueFamilyProperties *fp=family_properties.GetData();
+    for(int i=0;i<count;i++)
+    {
+        if(fp->queueFlags&flag)
+            return i;
+
+        ++fp;
+    }
+
+    return -1;
+}
+
+Device *PhysicalDevice::CreateGraphicsDevice() const
+{
+    const int index=QueueFamilyProperties(VK_QUEUE_GRAPHICS_BIT);
+
+    if(index==-1)
+        return(nullptr);
+
+    float queue_priorities[1] = {0.0};
+
+    VkDeviceQueueCreateInfo queue_info;
+    queue_info.queueFamilyIndex=index;
+    queue_info.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+    queue_info.pNext = nullptr;
+    queue_info.queueCount = 1;
+    queue_info.pQueuePriorities = queue_priorities;
+
+    VkDeviceCreateInfo create_info = {};
+    create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+    create_info.pNext = nullptr;
+    create_info.queueCreateInfoCount = 1;
+    create_info.pQueueCreateInfos = &queue_info;
+    create_info.enabledExtensionCount = 0;
+    create_info.ppEnabledExtensionNames = nullptr;
+    create_info.enabledLayerCount = 0;
+    create_info.ppEnabledLayerNames = nullptr;
+    create_info.pEnabledFeatures = nullptr;
+
+    VkDevice device;
+    VkResult res = vkCreateDevice(physical_device, &create_info, nullptr, &device);
+    if(res != VK_SUCCESS)
+        return(nullptr);
+
+    return(new Device(device,index));
+}
+
+VK_NAMESPACE_END

example/Vulkan/VKPhysicalDevice.h

@@ -0,0 +1,34 @@
+#ifndef HGL_GRAPH_VULKAN_PHYSICAL_DEVICE_INCLUDE
+#define HGL_GRAPH_VULKAN_PHYSICAL_DEVICE_INCLUDE
+
+#include"VK.h"
+#include<hgl/type/List.h>
+
+VK_NAMESPACE_BEGIN
+
+    class Device;
+
+    /**
+     * Vulkan物理设备对象封装<br>
+     * 注：这个设备可能是图形设备，也可能是计算设备等，我们暂时只支持图形设备
+     */
+    class PhysicalDevice
+    {
+        VkPhysicalDevice physical_device;
+
+        VkPhysicalDeviceFeatures features;
+        VkPhysicalDeviceProperties properties;
+        VkPhysicalDeviceMemoryProperties memory_properties;
+
+        List<VkQueueFamilyProperties> family_properties;
+        int QueueFamilyProperties(VkQueueFlags) const;
+
+    public:
+
+        PhysicalDevice(VkPhysicalDevice pd);
+        ~PhysicalDevice();
+
+        Device *CreateGraphicsDevice()const;                                    ///<创建一个图形设备
+    };//class PhysicalDevice
+VK_NAMESPACE_END
+#endif//HGL_GRAPH_VULKAN_PHYSICAL_DEVICE_INCLUDE

example/Vulkan/main.cpp

@@ -1,4 +1,7 @@
-#include"VKInstance.h"
+#include"VK.h"
+#include"VKInstance.h"
+#include"VKDevice.h"
+#include"VKCommandBuffer.h"
 
 int main(int,char **)
 {
@@ -7,7 +10,19 @@ int main(int,char **)
 
     vulkan::Instance inst("Test");
 
-    inst.Init();
+    if(!inst.Init())
+        return(-1);
+
+    const ObjectList<vulkan::PhysicalDevice> &device_list=inst.GetDeviceList();
+
+    vulkan::PhysicalDevice *pd=device_list[0];
+
+    vulkan::Device *dev=pd->CreateGraphicsDevice();
+
+    vulkan::CommandBuffer *cmd_buf=dev->CreateCommandBuffer();
+
+    delete cmd_buf;
+    delete dev;
 
     return 0;
 }