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added GetOffsetAlignment/GetUnitSize/GetBuffer functions at VKArrayBuffer.

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This commit is contained in:
hyzboy 2021-06-15 15:03:09 +08:00
parent 20070b6b35
commit e83fc97bb4
1 changed files with 23 additions and 3 deletions
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26
inc/hgl/graph/VKArrayBuffer.h
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@ -19,6 +19,9 @@ namespace hgl
GPUDevice *device; GPUDevice *device;
VkBufferUsageFlags buffer_usage_flags; VkBufferUsageFlags buffer_usage_flags;
VKMemoryAllocator *vk_ma;
uint32_t ubo_offset_alignment;
Collection *coll; Collection *coll;
@ -31,10 +34,12 @@ namespace hgl
{ {
uint32_t unit_size=sizeof(T); uint32_t unit_size=sizeof(T);
VKMemoryAllocator *ma=new VKMemoryAllocator(device,buffer_usage_flags); // construct function is going to set AllocUnitSize by minUniformOffsetAlignment vk_ma=new VKMemoryAllocator(device,buffer_usage_flags); // construct function is going to set AllocUnitSize by minUniformOffsetAlignment
MemoryBlock *mb=new MemoryBlock(ma); MemoryBlock *mb=new MemoryBlock(vk_ma);
const uint32_t align_size=ma->GetAllocUnitSize()-1; // this value is "min UBO Offset alignment" ubo_offset_alignment=vk_ma->GetAllocUnitSize();
const uint32_t align_size=ubo_offset_alignment-1;
unit_size=(unit_size+align_size)&(~align_size); unit_size=(unit_size+align_size)&(~align_size);
@ -47,6 +52,21 @@ namespace hgl
delete coll; delete coll;
} }
const uint32_t GetOffsetAlignment()const
{
return ubo_offset_alignment;
}
const uint32_t GetUnitSize()const
{
return coll->GetUnitBytes();
}
GPUBuffer *GetBuffer()
{
return vk_ma->GetBuffer();
}
uint32 Alloc(const uint32 max_count) ///<预分配空间 uint32 Alloc(const uint32 max_count) ///<预分配空间
{ {
if(!coll->Alloc(max_count)) if(!coll->Alloc(max_count))