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Wrap aligned memory allocation (now also supports Linux and Android)

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This commit is contained in:
saschawillems 2016-12-23 11:21:01 +01:00
parent d89b45eaf2
commit 55cbdbeedf
1 changed files with 27 additions and 4 deletions
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31
dynamicuniformbuffer/dynamicuniformbuffer.cpp
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@ -44,6 +44,30 @@ struct Vertex {
float color[3]; float color[3];
}; };
// Wrapper functions for aligned memory allocation
// There is currently no standard for this in C++ that works across all platforms and vendors, so we abstract this
void* alignedAlloc(size_t size, size_t alignment)
{
void *data = nullptr;
#ifdef _MSC_VER
data = _aligned_malloc(size, alignment);
#else
int res = posix_memalign(&data, alignment, size);
if (res != 0)
data = nullptr;
#endif
return data;
}
void alignedFree(void* data)
{
#ifdef _MSC_VER
_aligned_free(data);
#else
free(data);
#endif
}
class VulkanExample : public VulkanExampleBase class VulkanExample : public VulkanExampleBase
{ {
public: public:
@ -99,8 +123,7 @@ public:
~VulkanExample() ~VulkanExample()
{ {
if (uboDataDynamic.model) { if (uboDataDynamic.model) {
// todo: linux, android alignedFree(uboDataDynamic.model);
_aligned_free(uboDataDynamic.model);
} }
// Clean up used Vulkan resources // Clean up used Vulkan resources
@ -393,8 +416,8 @@ public:
size_t bufferSize = OBJECT_INSTANCES * dynamicAlignment; size_t bufferSize = OBJECT_INSTANCES * dynamicAlignment;
//todo: _algined_malloc only windows uboDataDynamic.model = (glm::mat4*)alignedAlloc(bufferSize, dynamicAlignment);
uboDataDynamic.model = (glm::mat4*)_aligned_malloc(bufferSize, dynamicAlignment); assert(uboDataDynamic.model);
std::cout << "minUniformBufferOffsetAlignment = " << uboAlignment << std::endl; std::cout << "minUniformBufferOffsetAlignment = " << uboAlignment << std::endl;
std::cout << "dynamicAlignment = " << dynamicAlignment << std::endl; std::cout << "dynamicAlignment = " << dynamicAlignment << std::endl;