allocate_sets()

std::vector< vk::DescriptorSet > MayaFlux::Core::VKDescriptorManager::allocate_sets	(	vk::Device	device,
		const std::vector< vk::DescriptorSetLayout > &	layouts
	)

Allocate multiple descriptor sets at once.

Parameters

device	Logical device
layouts	Vector of layouts (one per set)

Returns

Vector of allocated descriptor sets

More efficient than multiple allocate_set() calls.

Definition at line 539 of file VKDescriptorManager.cpp.

{
    if (layouts.empty()) {
        MF_WARN(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Allocating zero descriptor sets");
        return {};
    }
 
    if (m_pools.empty()) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "No descriptor pools available - call initialize() first");
        return {};
    }
 
    vk::DescriptorSetAllocateInfo alloc_info;
    alloc_info.descriptorPool = m_pools[m_current_pool_index];
    alloc_info.descriptorSetCount = static_cast<uint32_t>(layouts.size());
    alloc_info.pSetLayouts = layouts.data();
 
    std::vector<vk::DescriptorSet> sets;
    try {
        sets = device.allocateDescriptorSets(alloc_info);
        m_allocated_count += static_cast<uint32_t>(layouts.size());
    } catch (const vk::OutOfPoolMemoryError&) {
        MF_DEBUG(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Descriptor pool {} exhausted, growing...", m_current_pool_index);
 
        if (!grow_pools(device)) {
            return {};
        }
 
        alloc_info.descriptorPool = m_pools[m_current_pool_index];
        try {
            sets = device.allocateDescriptorSets(alloc_info);
            m_allocated_count += static_cast<uint32_t>(layouts.size());
        } catch (const vk::SystemError& e) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Failed to allocate descriptor sets after pool growth: {}", e.what());
            return {};
        }
    } catch (const vk::SystemError& e) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Failed to allocate descriptor sets: {}", e.what());
        return {};
    }
 
    MF_DEBUG(Journal::Component::Core, Journal::Context::GraphicsBackend,
        "Allocated {} descriptor sets (total: {}/{})",
        layouts.size(), m_allocated_count, m_pool_capacity);
 
    return sets;
}

References MayaFlux::Journal::Core, MayaFlux::Journal::GraphicsBackend, grow_pools(), m_allocated_count, m_current_pool_index, m_pool_capacity, m_pools, MF_DEBUG, MF_ERROR, and MF_WARN.

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