spicetools/hooks/graphics/backends/d3d9/d3d9_fake_swapchain.h

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2024-08-28 15:10:34 +00:00
#pragma once
// this file uses the C++ interface of Direct3D9
#ifdef CINTERFACE
#undef CINTERFACE
#endif
#include <atomic>
#include <d3d9.h>
#include "util/logging.h"
struct FakeIDirect3DSwapChain9 : IDirect3DSwapChain9Ex {
FakeIDirect3DSwapChain9(IDirect3DDevice9 *pDev, D3DPRESENT_PARAMETERS *present_params, bool is_d3d9ex) :
pDev(pDev), is_d3d9ex(is_d3d9ex)
{
// copy presentation parameters
memcpy(&this->present_params, present_params, sizeof(this->present_params));
// From MSDN https://docs.microsoft.com/en-us/windows/win32/direct3d9/d3dpresent-parameters:
// Values of 0 are treated as 1
if (this->present_params.BackBufferCount == 0) {
this->present_params.BackBufferCount = 1;
}
for (size_t i = 0; i < this->present_params.BackBufferCount; i++) {
IDirect3DSurface9 *render_target = nullptr;
HRESULT hr = pDev->CreateRenderTarget(
this->present_params.BackBufferWidth,
this->present_params.BackBufferHeight,
this->present_params.BackBufferFormat,
this->present_params.MultiSampleType,
this->present_params.MultiSampleQuality,
FALSE,
&render_target,
nullptr
);
if (SUCCEEDED(hr)) {
this->render_targets.push_back(render_target);
} else {
log_warning("graphics::d3d9", "failed to create backing render target for fake swap chain, hr={}",
FMT_HRESULT(hr));
}
}
}
FakeIDirect3DSwapChain9(const FakeIDirect3DSwapChain9 &) = delete;
FakeIDirect3DSwapChain9 &operator=(const FakeIDirect3DSwapChain9 &) = delete;
virtual ~FakeIDirect3DSwapChain9(void) {
for (auto &render_target : this->render_targets) {
render_target->Release();
}
}
#pragma region IUnknown
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObj) override;
virtual ULONG STDMETHODCALLTYPE AddRef(void) override;
virtual ULONG STDMETHODCALLTYPE Release(void) override;
#pragma endregion
#pragma region IDirect3DSwapChain9
virtual HRESULT STDMETHODCALLTYPE Present(const RECT *pSourceRect, const RECT *pDestRect, HWND hDestWindowOverride, const RGNDATA *pDirtyRegion, DWORD dwFlags) override;
virtual HRESULT STDMETHODCALLTYPE GetFrontBufferData(IDirect3DSurface9 *pDestSurface) override;
virtual HRESULT STDMETHODCALLTYPE GetBackBuffer(UINT iBackBuffer, D3DBACKBUFFER_TYPE Type, IDirect3DSurface9 **ppBackBuffer) override;
virtual HRESULT STDMETHODCALLTYPE GetRasterStatus(D3DRASTER_STATUS *pRasterStatus) override;
virtual HRESULT STDMETHODCALLTYPE GetDisplayMode(D3DDISPLAYMODE *pMode) override;
virtual HRESULT STDMETHODCALLTYPE GetDevice(IDirect3DDevice9 **ppDevice) override;
virtual HRESULT STDMETHODCALLTYPE GetPresentParameters(D3DPRESENT_PARAMETERS *pPresentationParameters) override;
#pragma endregion
#pragma region IDirect3DSwapChain9Ex
virtual HRESULT STDMETHODCALLTYPE GetLastPresentCount(UINT *pLastPresentCount) override;
virtual HRESULT STDMETHODCALLTYPE GetPresentStats(D3DPRESENTSTATS *pPresentationStatistics) override;
virtual HRESULT STDMETHODCALLTYPE GetDisplayModeEx(D3DDISPLAYMODEEX *pMode, D3DDISPLAYROTATION *pRotation) override;
#pragma endregion
IDirect3DDevice9 *const pDev;
bool is_d3d9ex;
std::atomic<ULONG> ref_cnt = 1;
D3DPRESENT_PARAMETERS present_params {};
std::vector<IDirect3DSurface9 *> render_targets;
};