eden-emu/VulkanMemoryAllocator
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Improvement in documentation

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This commit is contained in:
Adam Sawicki 2022-02-28 10:57:04 +01:00
parent 4039e45a19
commit f02c8a46d8
2 changed files with 42 additions and 14 deletions
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22
include/vk_mem_alloc.h
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@ -17788,14 +17788,28 @@ To use custom memory pools:
Example:
\code
// Find memoryTypeIndex for the pool.
VkBufferCreateInfo sampleBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
sampleBufCreateInfo.size = 0x10000; // Doesn't matter.
sampleBufCreateInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
VmaAllocationCreateInfo sampleAllocCreateInfo = {};
sampleAllocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO;
uint32_t memTypeIndex;
VkResult res = vmaFindMemoryTypeIndexForBufferInfo(allocator,
&sampleBufCreateInfo, &sampleAllocCreateInfo, &memTypeIndex);
// Check res...
// Create a pool that can have at most 2 blocks, 128 MiB each.
VmaPoolCreateInfo poolCreateInfo = {};
poolCreateInfo.memoryTypeIndex = ...
poolCreateInfo.memoryTypeIndex = memTypeIndex;
poolCreateInfo.blockSize = 128ull * 1024 * 1024;
poolCreateInfo.maxBlockCount = 2;
VmaPool pool;
vmaCreatePool(allocator, &poolCreateInfo, &pool);
res = vmaCreatePool(allocator, &poolCreateInfo, &pool);
// Check res...
// Allocate a buffer out of it.
VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
@ -17807,8 +17821,8 @@ allocCreateInfo.pool = pool;
VkBuffer buf;
VmaAllocation alloc;
VmaAllocationInfo allocInfo;
vmaCreateBuffer(allocator, &bufCreateInfo, &allocCreateInfo, &buf, &alloc, &allocInfo);
res = vmaCreateBuffer(allocator, &bufCreateInfo, &allocCreateInfo, &buf, &alloc, nullptr);
// Check res...
\endcode
You have to free all allocations made from this pool before destroying it.