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https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator
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Improvements in documentation
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README.md
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README.md
@ -54,10 +54,40 @@ Additional features:
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- Platform-independent, but developed and tested on Windows using Visual Studio.
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- Platform-independent, but developed and tested on Windows using Visual Studio.
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- Error handling implemented by returning `VkResult` error codes - same way as in Vulkan.
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- Error handling implemented by returning `VkResult` error codes - same way as in Vulkan.
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# Example
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Basic usage of this library is very simple. Advanced features are optional. After you created global `VmaAllocator` object, a complete code needed to create a buffer may look like this:
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```cpp
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VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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bufferInfo.size = 65536;
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bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
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VmaAllocationCreateInfo allocInfo = {};
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allocInfo.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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VkBuffer buffer;
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VmaAllocation allocation;
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vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &buffer, &allocation, nullptr);
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```
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With this one function call:
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1. `VkBuffer` is created.
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2. `VkDeviceMemory` block is allocated if needed.
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3. An unused region of the memory block is bound to this buffer.
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`VmaAllocation` is an object that represents memory assigned to this buffer. It can be queried for parameters useful e.g. if you want to map the memory on host.
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# Read more
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# Read more
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See **[Documentation](https://gpuopen-librariesandsdks.github.io/VulkanMemoryAllocator/html/)**.
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See **[Documentation](https://gpuopen-librariesandsdks.github.io/VulkanMemoryAllocator/html/)**.
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# Software using this library
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- **[Anvil](https://github.com/GPUOpen-LibrariesAndSDKs/Anvil)** - cross-platform framework for Vulkan
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- **[vkDOOM3](https://github.com/DustinHLand/vkDOOM3)** - Vulkan port of GPL DOOM 3 BFG Edition
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# See also
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# See also
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- **[Awesome Vulkan](https://github.com/vinjn/awesome-vulkan)** - a curated list of awesome Vulkan libraries, debuggers and resources.
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- **[Awesome Vulkan](https://github.com/vinjn/awesome-vulkan)** - a curated list of awesome Vulkan libraries, debuggers and resources.
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@ -113,15 +113,15 @@ vmaCreateAllocator(&allocatorInfo, &allocator);
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<li>Call <a class="el" href="group__layer3.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer()</a> / <a class="el" href="group__layer3.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer(). ">vmaCreateImage()</a> to get <code>VkBuffer</code>/<code>VkImage</code> with memory already allocated and bound to it.</li>
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<li>Call <a class="el" href="group__layer3.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer()</a> / <a class="el" href="group__layer3.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer(). ">vmaCreateImage()</a> to get <code>VkBuffer</code>/<code>VkImage</code> with memory already allocated and bound to it.</li>
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</ol>
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</ol>
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<pre class="fragment">VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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<pre class="fragment">VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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bufferInfo.size = myBufferSize;
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bufferInfo.size = 65536;
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bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
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bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
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VmaAllocationCreateInfo memReq = {};
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VmaAllocationCreateInfo allocInfo = {};
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memReq.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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allocInfo.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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VkBuffer buffer;
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VkBuffer buffer;
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VmaAllocation allocation;
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VmaAllocation allocation;
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vmaCreateBuffer(allocator, &bufferInfo, &memReq, &buffer, &allocation, nullptr);
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vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &buffer, &allocation, nullptr);
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</pre><p>Don't forget to destroy your objects when no longer needed:</p>
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</pre><p>Don't forget to destroy your objects when no longer needed:</p>
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<pre class="fragment">vmaDestroyBuffer(allocator, buffer, allocation);
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<pre class="fragment">vmaDestroyBuffer(allocator, buffer, allocation);
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vmaDestroyAllocator(allocator);
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vmaDestroyAllocator(allocator);
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@ -76,15 +76,15 @@ When you want to create a buffer or image:
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VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
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bufferInfo.size = myBufferSize;
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bufferInfo.size = 65536;
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bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
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bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
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VmaAllocationCreateInfo memReq = {};
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VmaAllocationCreateInfo allocInfo = {};
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memReq.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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allocInfo.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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VkBuffer buffer;
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VkBuffer buffer;
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VmaAllocation allocation;
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VmaAllocation allocation;
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vmaCreateBuffer(allocator, &bufferInfo, &memReq, &buffer, &allocation, nullptr);
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vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &buffer, &allocation, nullptr);
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Don't forget to destroy your objects when no longer needed:
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Don't forget to destroy your objects when no longer needed:
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