get_usage_flags()

vk::ImageUsageFlags MayaFlux::Core::VKImage::get_usage_flags

(

)

const

Get appropriate VkImageUsageFlags based on Usage.

Returns

VkImageUsageFlags to use when creating VkImage

Definition at line 35 of file VKImage.cpp.

{
    vk::ImageUsageFlags flags = vk::ImageUsageFlagBits::eTransferSrc | vk::ImageUsageFlagBits::eTransferDst;
 
    switch (m_usage) {
    case Usage::TEXTURE_2D:
        flags |= vk::ImageUsageFlagBits::eSampled;
        break;
 
    case Usage::RENDER_TARGET:
        flags |= vk::ImageUsageFlagBits::eColorAttachment | vk::ImageUsageFlagBits::eSampled;
        break;
 
    case Usage::DEPTH_STENCIL:
        flags |= vk::ImageUsageFlagBits::eDepthStencilAttachment | vk::ImageUsageFlagBits::eSampled;
        break;
 
    case Usage::STORAGE:
        flags |= vk::ImageUsageFlagBits::eStorage | vk::ImageUsageFlagBits::eSampled;
        break;
 
    case Usage::TRANSFER_SRC:
        // Already included above
        break;
 
    case Usage::TRANSFER_DST:
        // Already included above
        break;
 
    case Usage::STAGING:
        // Staging images are rare in Vulkan (usually use buffers)
        // Just transfer ops
        break;
    }
 
    return flags;
}

References DEPTH_STENCIL, m_usage, RENDER_TARGET, STAGING, STORAGE, TEXTURE_2D, TRANSFER_DST, and TRANSFER_SRC.