preparing VKIndirectCommandBuffer.h

inc/hgl/graph/VKIndirectCommandBuffer.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include<hgl/graph/VKBuffer.h>
+
+VK_NAMESPACE_BEGIN
+
+class IndirectCommandBuffer:public DeviceBuffer
+{
+protected:
+
+    uint32_t max_count;
+    uint32_t stride;
+
+private:
+
+    friend class GPUDevice;
+
+    IndirectCommandBuffer(VkDevice d,const DeviceBufferData &vb,const uint32_t mc,const uint32_t s):DeviceBuffer(d,vb)
+    {
+        max_count=mc;
+        stride=s;
+    }
+
+    ~IndirectCommandBuffer()=default;
+
+    const uint32_t GetMaxCount ()const { return max_count; }
+
+    const VkDeviceSize GetTotalBytes()const { return stride*max_count; }
+    
+    void *  Map     (VkDeviceSize start,VkDeviceSize size)          override {return DeviceBuffer::Map(start*stride,size*stride);}
+    void    Flush   (VkDeviceSize start,VkDeviceSize size)          override {return DeviceBuffer::Flush(start*stride,size*stride);}
+    void    Flush   (VkDeviceSize size)                             override {return DeviceBuffer::Flush(size*stride);}
+
+    bool    Write   (const void *ptr,uint32_t start,uint32_t size)  override {return DeviceBuffer::Write(ptr,start*stride,size*stride);}
+    bool    Write   (const void *ptr,uint32_t size)                 override {return DeviceBuffer::Write(ptr,0,size*stride);}
+};//class IndirectCommandBuffer:public DeviceBuffer
+VK_NAMESPACE_END