170 lines
4.2 KiB
C++
170 lines
4.2 KiB
C++
#include "DX10_Hook.h"
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#include "Windows_Hook.h"
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#include "../Renderer_Detector.h"
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#include "../../dll/dll.h"
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#ifndef NO_OVERLAY
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#include <imgui.h>
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#include <impls/windows/imgui_impl_dx10.h>
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DX10_Hook* DX10_Hook::_inst = nullptr;
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bool DX10_Hook::start_hook()
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{
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bool res = true;
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if (!hooked)
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{
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if (!Windows_Hook::Inst()->start_hook())
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return false;
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PRINT_DEBUG("Hooked DirectX 10\n");
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hooked = true;
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Renderer_Detector::Inst().renderer_found(this);
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BeginHook();
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HookFuncs(
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std::make_pair<void**, void*>(&(PVOID&)DX10_Hook::Present, &DX10_Hook::MyPresent),
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std::make_pair<void**, void*>(&(PVOID&)DX10_Hook::ResizeTarget, &DX10_Hook::MyResizeTarget),
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std::make_pair<void**, void*>(&(PVOID&)DX10_Hook::ResizeBuffers, &DX10_Hook::MyResizeBuffers)
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);
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EndHook();
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get_steam_client()->steam_overlay->HookReady();
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}
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return res;
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}
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void DX10_Hook::resetRenderState()
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{
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if (initialized)
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{
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mainRenderTargetView->Release();
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ImGui_ImplDX10_Shutdown();
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Windows_Hook::Inst()->resetRenderState();
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ImGui::DestroyContext();
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initialized = false;
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}
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}
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// Try to make this function and overlay's proc as short as possible or it might affect game's fps.
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void DX10_Hook::prepareForOverlay(IDXGISwapChain* pSwapChain)
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{
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DXGI_SWAP_CHAIN_DESC desc;
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pSwapChain->GetDesc(&desc);
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if (!initialized)
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{
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if (FAILED(pSwapChain->GetDevice(IID_PPV_ARGS(&pDevice))))
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return;
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO();
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io.IniFilename = NULL;
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ID3D10Texture2D* pBackBuffer;
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pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
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pDevice->CreateRenderTargetView(pBackBuffer, NULL, &mainRenderTargetView);
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pBackBuffer->Release();
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ImGui_ImplDX10_Init(pDevice);
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pDevice->Release();
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get_steam_client()->steam_overlay->CreateFonts();
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initialized = true;
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}
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ImGui_ImplDX10_NewFrame();
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Windows_Hook::Inst()->prepareForOverlay(desc.OutputWindow);
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ImGui::NewFrame();
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get_steam_client()->steam_overlay->OverlayProc();
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ImGui::Render();
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pDevice->OMSetRenderTargets(1, &mainRenderTargetView, NULL);
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ImGui_ImplDX10_RenderDrawData(ImGui::GetDrawData());
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}
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HRESULT STDMETHODCALLTYPE DX10_Hook::MyPresent(IDXGISwapChain *_this, UINT SyncInterval, UINT Flags)
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{
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DX10_Hook::Inst()->prepareForOverlay(_this);
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return (_this->*DX10_Hook::Inst()->Present)(SyncInterval, Flags);
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}
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HRESULT STDMETHODCALLTYPE DX10_Hook::MyResizeTarget(IDXGISwapChain* _this, const DXGI_MODE_DESC* pNewTargetParameters)
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{
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DX10_Hook::Inst()->resetRenderState();
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return (_this->*DX10_Hook::Inst()->ResizeTarget)(pNewTargetParameters);
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}
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HRESULT STDMETHODCALLTYPE DX10_Hook::MyResizeBuffers(IDXGISwapChain* _this, UINT BufferCount, UINT Width, UINT Height, DXGI_FORMAT NewFormat, UINT SwapChainFlags)
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{
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DX10_Hook::Inst()->resetRenderState();
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return (_this->*DX10_Hook::Inst()->ResizeBuffers)(BufferCount, Width, Height, NewFormat, SwapChainFlags);
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}
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DX10_Hook::DX10_Hook():
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initialized(false),
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hooked(false),
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pDevice(nullptr),
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mainRenderTargetView(nullptr),
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Present(nullptr),
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ResizeBuffers(nullptr),
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ResizeTarget(nullptr)
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{
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_library = LoadLibrary(DLL_NAME);
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}
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DX10_Hook::~DX10_Hook()
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{
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PRINT_DEBUG("DX10 Hook removed\n");
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if (initialized)
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{
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mainRenderTargetView->Release();
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ImGui_ImplDX10_InvalidateDeviceObjects();
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ImGui::DestroyContext();
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initialized = false;
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}
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FreeLibrary(reinterpret_cast<HMODULE>(_library));
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_inst = nullptr;
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}
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DX10_Hook* DX10_Hook::Inst()
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{
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if (_inst == nullptr)
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_inst = new DX10_Hook;
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return _inst;
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}
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const char* DX10_Hook::get_lib_name() const
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{
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return DLL_NAME;
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}
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void DX10_Hook::loadFunctions(IDXGISwapChain *pSwapChain)
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{
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void** vTable;
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vTable = *reinterpret_cast<void***>(pSwapChain);
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#define LOAD_FUNC(X) (void*&)X = vTable[(int)IDXGISwapChainVTable::X]
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LOAD_FUNC(Present);
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LOAD_FUNC(ResizeBuffers);
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LOAD_FUNC(ResizeTarget);
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#undef LOAD_FUNC
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}
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#endif//NO_OVERLAY
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