ensure_depth_image()

void MayaFlux::Core::BackendWindowHandler::ensure_depth_image ( WindowRenderContext &  ctx )

private

Ensure depth image exists at current swapchain extent.

Parameters

ctx	Window context to create depth image for

Creates or recreates a D32_SFLOAT depth image matching the swapchain extent. No-op if depth image already matches.

Definition at line 458 of file BackendWindowHandler.cpp.

{
    if (!ctx.swapchain) {
        return;
    }
 
    auto extent = ctx.swapchain->get_extent();
 
    if (ctx.depth_image && ctx.depth_image->is_initialized()
        && ctx.depth_image->get_width() == extent.width
        && ctx.depth_image->get_height() == extent.height) {
        return;
    }
 
    auto device = m_context.get_device();
 
    if (ctx.depth_image && ctx.depth_image->is_initialized()) {
        device.waitIdle();
        const auto& res = ctx.depth_image->get_image_resources();
        if (res.image_view) {
            device.destroyImageView(res.image_view);
        }
        if (res.memory) {
            device.freeMemory(res.memory);
        }
        if (res.image) {
            device.destroyImage(res.image);
        }
        ctx.depth_image.reset();
    }
 
    ctx.depth_image = std::make_shared<VKImage>(
        extent.width, extent.height, 1,
        vk::Format::eD32Sfloat,
        VKImage::Usage::DEPTH_STENCIL,
        VKImage::Type::TYPE_2D,
        1, 1,
        Kakshya::DataModality::IMAGE_2D);
 
    m_resource_manager->initialize_image(ctx.depth_image);
 
    if (!ctx.depth_image->is_initialized()) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Failed to create depth image for window '{}'",
            ctx.window->get_create_info().title);
        ctx.depth_image.reset();
        return;
    }
 
    m_resource_manager->transition_image_layout(
        ctx.depth_image->get_image(),
        vk::ImageLayout::eUndefined,
        vk::ImageLayout::eDepthStencilAttachmentOptimal,
        1, 1,
        vk::ImageAspectFlagBits::eDepth);
    ctx.depth_image->set_current_layout(vk::ImageLayout::eDepthStencilAttachmentOptimal);
 
    MF_INFO(Journal::Component::Core, Journal::Context::GraphicsBackend,
        "Created depth image for window '{}': {}x{}, D32_SFLOAT",
        ctx.window->get_create_info().title,
        extent.width, extent.height);
}

References MayaFlux::Journal::Core, MayaFlux::Core::WindowRenderContext::depth_image, MayaFlux::Journal::GraphicsBackend, MayaFlux::Kakshya::IMAGE_2D, MF_ERROR, MF_INFO, MayaFlux::Core::WindowRenderContext::swapchain, and MayaFlux::Core::WindowRenderContext::window.

Referenced by setup_backend_service().

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