spicetools/hooks/graphics/backends/d3d9/d3d9_swapchain.cpp

#include "d3d9_swapchain.h"

#include <cassert>
#include <mutex>

#include "avs/game.h"
#include "hooks/graphics/graphics.h"

#include "d3d9_backend.h"
#include "d3d9_device.h"

// std::min
#ifdef min
#undef min
#endif

#define CHECK_RESULT(x) \
    HRESULT ret = (x); \
    if (GRAPHICS_LOG_HRESULT && FAILED(ret)) [[unlikely]] { \
        log_warning("graphics::d3d9", "{} failed, hr={}", __FUNCTION__, FMT_HRESULT(ret)); \
    } \
    return ret

HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::QueryInterface(REFIID riid, void **ppvObj) {
    if (ppvObj == nullptr) {
        return E_POINTER;
    }

    if (//riid == __uuidof(IUnknown) || Ignore IUnknown, it's often queried to test object equality between different interfaces
        riid == IID_IDirect3DSwapChain9 ||
        riid == IID_IDirect3DSwapChain9Ex)
    {
#pragma region Update to IDirect3DSwapChain9Ex interface
        if (!is_d3d9ex && riid == IID_IDirect3DSwapChain9Ex) {
            IDirect3DSwapChain9Ex *swapchainex = nullptr;

            if (FAILED(pReal->QueryInterface(IID_PPV_ARGS(&swapchainex)))) {
                return E_NOINTERFACE;
            }

            pReal->Release();
            pReal = swapchainex;
            is_d3d9ex = true;
        }
#pragma endregion

        this->AddRef();
        *ppvObj = this;

        return S_OK;
    }

    return pReal->QueryInterface(riid, ppvObj);
}

ULONG STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::AddRef(void) {
    return pReal->AddRef();
}
ULONG STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::Release(void) {
    ULONG refs = pReal != nullptr ? pReal->Release() : 0;

    if (refs == 0) {
        delete this;
    }

    // Metal Gear Arcade expects the swap chain to only have one reference. The parent
    // `WrappedIDirect3DDevice9` holds a strong reference to this swap chain which means
    // the reference count will be above one. Workaround this by returning a maximum of one.
    if (avs::game::is_model("I36")) {
        return std::min(refs, 1lu);
    }

    return refs;
}

/*
 * IDirect3DSwapChain9
 */

HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::Present(const RECT *pSourceRect, const RECT *pDestRect,
        HWND hDestWindowOverride, const RGNDATA *pDirtyRegion, DWORD dwFlags)
{
    static std::once_flag printed;
    std::call_once(printed, []() {
        log_misc("graphics::d3d9", "WrappedIDirect3DSwapChain9::Present");
    });

    if (should_run_hooks) {
        graphics_d3d9_on_present(pDev->hFocusWindow, pDev->pReal, pDev);
    }

    CHECK_RESULT(pReal->Present(pSourceRect, pDestRect, hDestWindowOverride, pDirtyRegion, dwFlags));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetFrontBufferData(IDirect3DSurface9 *pDestSurface) {
    CHECK_RESULT(pReal->GetFrontBufferData(pDestSurface));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetBackBuffer(UINT iBackBuffer, D3DBACKBUFFER_TYPE Type,
        IDirect3DSurface9 **ppBackBuffer)
{
    CHECK_RESULT(pReal->GetBackBuffer(iBackBuffer, Type, ppBackBuffer));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetRasterStatus(D3DRASTER_STATUS *pRasterStatus) {
    CHECK_RESULT(pReal->GetRasterStatus(pRasterStatus));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetDisplayMode(D3DDISPLAYMODE *pMode) {
    CHECK_RESULT(pReal->GetDisplayMode(pMode));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetDevice(IDirect3DDevice9 **ppDevice) {
    if (ppDevice == nullptr) {
        return D3DERR_INVALIDCALL;
    }

    pDev->AddRef();
    *ppDevice = pDev;

    return D3D_OK;
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetPresentParameters(
        D3DPRESENT_PARAMETERS *pPresentationParameters)
{
    CHECK_RESULT(pReal->GetPresentParameters(pPresentationParameters));
}

/*
 * IDirect3DSwapChain9Ex
 */

HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetLastPresentCount(UINT *pLastPresentCount) {
    assert(is_d3d9ex);
    CHECK_RESULT(static_cast<IDirect3DSwapChain9Ex *>(pReal)->GetLastPresentCount(pLastPresentCount));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetPresentStats(D3DPRESENTSTATS *pPresentationStatistics) {
    assert(is_d3d9ex);
    CHECK_RESULT(static_cast<IDirect3DSwapChain9Ex *>(pReal)->GetPresentStats(pPresentationStatistics));
}
HRESULT STDMETHODCALLTYPE WrappedIDirect3DSwapChain9::GetDisplayModeEx(D3DDISPLAYMODEEX *pMode,
        D3DDISPLAYROTATION *pRotation)
{
    assert(is_d3d9ex);
    CHECK_RESULT(static_cast<IDirect3DSwapChain9Ex *>(pReal)->GetDisplayModeEx(pMode, pRotation));
}