create_pool()

vk::DescriptorPool MayaFlux::Core::VKDescriptorManager::create_pool ( vk::Device  device, uint32_t  max_sets  )

private

Create a new descriptor pool.

Parameters

device	Logical device
max_sets	Maximum descriptor sets this pool can allocate

Returns

Pool handle, or null on failure

Pool sizes are calculated to handle common descriptor types:

• Storage buffers (common in compute)
• Uniform buffers (common in graphics)
• Storage images (less common)
• Combined image samplers (less common)

Definition at line 200 of file VKDescriptorManager.cpp.

{
    std::vector<vk::DescriptorPoolSize> pool_sizes = {
        { vk::DescriptorType::eStorageBuffer, max_sets * 4 },
 
        { vk::DescriptorType::eUniformBuffer, max_sets * 2 },
 
        { vk::DescriptorType::eStorageImage, max_sets * 2 },
 
        { vk::DescriptorType::eCombinedImageSampler, max_sets * 2 },
    };
 
    vk::DescriptorPoolCreateInfo pool_info;
    pool_info.flags = vk::DescriptorPoolCreateFlagBits::eFreeDescriptorSet;
    pool_info.maxSets = max_sets;
    pool_info.poolSizeCount = static_cast<uint32_t>(pool_sizes.size());
    pool_info.pPoolSizes = pool_sizes.data();
 
    vk::DescriptorPool pool;
    try {
        pool = device.createDescriptorPool(pool_info);
    } catch (const vk::SystemError& e) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Failed to create descriptor pool: {}", e.what());
        return nullptr;
    }
 
    MF_DEBUG(Journal::Component::Core, Journal::Context::GraphicsBackend,
        "Created descriptor pool (max sets: {})", max_sets);
 
    return pool;
}

References MayaFlux::Journal::Core, MayaFlux::Journal::GraphicsBackend, MF_DEBUG, and MF_ERROR.

Referenced by grow_pools(), and initialize().

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