XCEngine/new_editor/app/Rendering/Native/NativeRendererWindowInterop.cpp

#include "NativeRendererSupport.h"

namespace XCEngine::UI::Editor::Host {

using namespace NativeRendererSupport;

bool NativeRenderer::AttachWindowRenderer(D3D12WindowRenderer& windowRenderer) {
    if (m_windowRenderer != &windowRenderer) {
        ReleaseWindowRendererInterop();
        m_windowRenderer = &windowRenderer;
    }

    if (!EnsureWindowRendererInterop()) {
        return false;
    }

    DiscardRenderTarget();

    if (m_windowInterop.HasBackBufferTargets()) {
        return true;
    }

    return m_windowInterop.RebuildBackBufferTargets();
}

void NativeRenderer::DetachWindowRenderer() {
    ReleaseWindowRendererInterop();
    m_windowRenderer = nullptr;
}

void NativeRenderer::ReleaseWindowRendererBackBufferTargets() {
    m_windowInterop.ReleaseBackBufferTargets();
}

bool NativeRenderer::RebuildWindowRendererBackBufferTargets() {
    if (!EnsureWindowRendererInterop()) {
        return false;
    }

    DiscardRenderTarget();
    ReleaseWindowRendererBackBufferTargets();
    return m_windowInterop.RebuildBackBufferTargets();
}

bool NativeRenderer::HasAttachedWindowRenderer() const {
    return m_windowInterop.HasAttachedWindowRenderer();
}

bool NativeRenderer::EnsureWindowRendererInterop() {
    if (m_windowRenderer == nullptr) {
        m_lastRenderError = "EnsureWindowRendererInterop requires an attached D3D12 window renderer.";
        return false;
    }
    if (m_d2dFactory == nullptr || m_dwriteFactory == nullptr) {
        m_lastRenderError = "EnsureWindowRendererInterop requires initialized D2D and DWrite factories.";
        return false;
    }

    const bool attached = m_windowInterop.Attach(*m_windowRenderer, *m_d2dFactory.Get());
    if (!attached) {
        m_lastRenderError = m_windowInterop.GetLastError();
    } else {
        m_lastRenderError.clear();
    }
    return attached;
}

void NativeRenderer::ReleaseWindowRendererInterop() {
    m_windowInterop.Detach();
}

} // namespace XCEngine::UI::Editor::Host