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VKBuffer增强Map函数

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This commit is contained in:
HuYingzhuo 2019-04-11 23:02:02 +08:00
parent 30edac78bd
commit 919d2cb14e
2 changed files with 10 additions and 3 deletions
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11
example/Vulkan/VKBuffer.cpp
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@ -7,11 +7,18 @@ Buffer::~Buffer()
vkFreeMemory(device,mem,nullptr); vkFreeMemory(device,mem,nullptr);
} }
uint8_t *Buffer::Map() uint8_t *Buffer::Map(uint32_t start,uint32_t size)
{ {
uint8_t *p; uint8_t *p;
if(vkMapMemory(device,mem,0,buffer_info.range,0,(void **)&p)==VK_SUCCESS) if(start>buffer_info.range
||start+size>buffer_info.range)
return(nullptr);
if(start==0&&size==0)
size=buffer_info.range;
if(vkMapMemory(device,mem,start,size,0,(void **)&p)==VK_SUCCESS)
return p; return p;
return nullptr; return nullptr;

2
example/Vulkan/VKBuffer.h
View File

@ -26,7 +26,7 @@ public:
virtual ~Buffer(); virtual ~Buffer();
uint8_t *Map(); uint8_t *Map(uint32_t start=0,uint32_t size=0);
void Unmap(); void Unmap();
};//class Buffer };//class Buffer
VK_NAMESPACE_END VK_NAMESPACE_END