Method CreateBuffer

deps/LLGL/sources/Renderer/Vulkan/VKRenderSystem.cpp:133–172

/* ----- Buffers ------ */

Buffer* VKRenderSystem::CreateBuffer(const BufferDescriptor& desc, const void* initialData)
{
    AssertCreateBuffer(desc, static_cast<uint64_t>(std::numeric_limits<VkDeviceSize>::max()));

    /* Create staging buffer */
    VkBufferCreateInfo stagingCreateInfo;
    BuildVkBufferCreateInfo(
        stagingCreateInfo,
        static_cast<VkDeviceSize>(desc.size),
        GetStagingVkBufferUsageFlags(desc.cpuAccessFlags)
    );

    auto stagingBuffer = CreateStagingBuffer(stagingCreateInfo, initialData, desc.size);

    /* Create primary buffer object */
    auto buffer = TakeOwnership(buffers_, MakeUnique<VKBuffer>(device_, desc));

    /* Allocate device memory */
    auto memoryRegion = deviceMemoryMngr_->Allocate(
        buffer->GetDeviceBuffer().GetRequirements(),
        VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
    );
    buffer->BindMemoryRegion(device_, memoryRegion);

    /* Copy staging buffer into hardware buffer */
    device_.CopyBuffer(stagingBuffer.GetVkBuffer(), buffer->GetVkBuffer(), static_cast<VkDeviceSize>(desc.size));

    if (desc.cpuAccessFlags != 0 || (desc.miscFlags & MiscFlags::DynamicUsage) != 0)
    {
        /* Store ownership of staging buffer */
        buffer->TakeStagingBuffer(std::move(stagingBuffer));
    }
    else
    {
        /* Release staging buffer */
        stagingBuffer.ReleaseMemoryRegion(*deviceMemoryMngr_);
    }

    return buffer;
}

BufferArray* VKRenderSystem::CreateBufferArray(std::uint32_t numBuffers, Buffer* const * bufferArray)
{