From eeff738f56b60448b67575d0c20a78144aa25144 Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Wed, 10 Feb 2021 18:53:07 +0800
Subject: [PATCH] add VKArrayBuffer.cpp/.h

---
 inc/hgl/graph/VKArrayBuffer.h           | 39 +++++++++++++++++++++++++
 src/SceneGraph/CMakeLists.txt           |  6 +++-
 src/SceneGraph/Vulkan/VKArrayBuffer.cpp | 35 ++++++++++++++++++++++
 3 files changed, 79 insertions(+), 1 deletion(-)
 create mode 100644 inc/hgl/graph/VKArrayBuffer.h
 create mode 100644 src/SceneGraph/Vulkan/VKArrayBuffer.cpp

diff --git a/inc/hgl/graph/VKArrayBuffer.h b/inc/hgl/graph/VKArrayBuffer.h
new file mode 100644
index 00000000..50cd5fee
--- /dev/null
+++ b/inc/hgl/graph/VKArrayBuffer.h
@@ -0,0 +1,39 @@
+#ifndef HGL_GRAPH_VULKAN_ARRAY_BUFFER_INCLUDE
+#define HGL_GRAPH_VULKAN_ARRAY_BUFFER_INCLUDE
+
+#include<hgl/graph/VKBuffer.h>
+namespace hgl
+{
+    namespace graph
+    {
+        /**
+        * GPU数据阵列缓冲区<br>
+        * 它用于储存多份相同格式的数据，常用于多物件渲染，instance等
+        */
+        class GPUArrayBuffer
+        {
+        protected:
+
+            uint32_t    item_size;                          ///<单个数据长度
+            uint32_t    alloc_count;                        ///<总计分配的数据个数
+            uint32_t    count;                              ///<实际使用的数据个数
+
+            GPUBuffer * buf_gpu;                            ///<实际数据GPU缓冲区
+            uint8 *     buf_cpu;
+            uint32_t *  offset;                             ///<数据偏移地址
+
+        public:
+
+            /**
+            * 本类构造函数
+            * @param s 单个数据长度
+            * @param c 数据个数
+            */
+            GPUArrayBuffer(const uint32_t s=0,const uint32_t c=0);
+            virtual ~GPUArrayBuffer();
+
+            void Clear();                                   ///<清空缓冲区
+        };//class GPUArrayBuffer
+    }//namespace graph
+}//namespace hgl
+#endif//HGL_GRAPH_VULKAN_ARRAY_BUFFER_INCLUDE
diff --git a/src/SceneGraph/CMakeLists.txt b/src/SceneGraph/CMakeLists.txt
index cdf4f111..9c341ec9 100644
--- a/src/SceneGraph/CMakeLists.txt
+++ b/src/SceneGraph/CMakeLists.txt
@@ -102,8 +102,12 @@ SET(VK_DEBUG_SOURCE     ${SG_INCLUDE_PATH}/VKDebugOut.h
 
 SET(VK_MEMORY_SOURCE    ${SG_INCLUDE_PATH}/VKMemory.h
                         ${SG_INCLUDE_PATH}/VKBuffer.h
+                        ${SG_INCLUDE_PATH}/VKVertexAttribBuffer.h
+                        ${SG_INCLUDE_PATH}/VKIndexBuffer.h
+                        ${SG_INCLUDE_PATH}/VKArrayBuffer.h
                         Vulkan/VKMemory.cpp
-                        Vulkan/VKBuffer.cpp)
+                        Vulkan/VKBuffer.cpp
+                        Vulkan/VKArrayBuffer.cpp)
 
 SET(VK_DEVICE_SOURCE    ${SG_INCLUDE_PATH}/VKDevice.h
                         ${SG_INCLUDE_PATH}/VKDeviceAttribute.h
diff --git a/src/SceneGraph/Vulkan/VKArrayBuffer.cpp b/src/SceneGraph/Vulkan/VKArrayBuffer.cpp
new file mode 100644
index 00000000..f35c5c05
--- /dev/null
+++ b/src/SceneGraph/Vulkan/VKArrayBuffer.cpp
@@ -0,0 +1,35 @@
+#include<hgl/graph/VKArrayBuffer.h>
+
+namespace hgl
+{
+    namespace graph
+    {
+        /**
+        * 本类构造函数
+        * @param s 单个数据长度
+        * @param c 数据个数
+        */
+        GPUArrayBuffer::GPUArrayBuffer(const uint32_t s,const uint32_t c)
+        {
+            item_size=s;
+            count=c;
+            alloc_count=power_to_2(c);
+
+            buf_gpu=nullptr;
+            buf_cpu=nullptr;
+            offset=nullptr;
+        }
+
+        GPUArrayBuffer::~GPUArrayBuffer()
+        {
+            SAFE_CLEAR(buf_gpu);
+        }
+
+        void GPUArrayBuffer::Clear()
+        {
+            count=0;
+        }
+
+
+    }//namespace graph
+}//namespace hgl