feat(gx): add initial d3d backend

src/gx/d3d/CGxDeviceD3d.cpp

@@ -0,0 +1,149 @@
+#include "gx/d3d/CGxDeviceD3d.hpp"
+
+ATOM WindowClassCreate() {
+    auto instance = GetModuleHandle(nullptr);
+
+    WNDCLASSEX wc = { 0 };
+
+    wc.cbSize = sizeof(wc);
+    wc.style = CS_OWNDC;
+    wc.lpfnWndProc = CGxDeviceD3d::WindowProcD3d;
+    wc.hInstance = instance;
+    wc.lpszClassName = "GxWindowClassD3d";
+
+    wc.hIcon = static_cast<HICON>(LoadImage(instance, TEXT("BlizzardIcon.ico"), 1u, 0, 0, 0x40));
+    wc.hCursor = LoadCursor(instance, TEXT("BlizzardCursor.cur"));
+
+    if (!wc.hCursor) {
+        wc.hCursor = LoadCursor(instance, IDC_ARROW);
+    }
+
+    return RegisterClassEx(&wc);
+}
+
+int32_t CGxDeviceD3d::ILoadD3dLib(HINSTANCE& d3dLib, LPDIRECT3D9& d3d) {
+    d3dLib = nullptr;
+    d3d = nullptr;
+
+    d3dLib = LoadLibrary(TEXT("d3d9.dll"));
+
+    if (d3dLib) {
+        auto d3dCreateProc = GetProcAddress(d3dLib, "Direct3DCreate9");
+
+        if (d3dCreateProc) {
+            d3d = reinterpret_cast<LPDIRECT3D9>(d3dCreateProc());
+
+            if (d3d) {
+                return 1;
+            }
+
+            CGxDevice::Log("CGxDeviceD3d::ILoadD3dLib(): unable to d3dCreateProc()");
+        } else {
+            CGxDevice::Log("CGxDeviceD3d::ILoadD3dLib(): unable to GetProcAddress()");
+        }
+    } else {
+        CGxDevice::Log("CGxDeviceD3d::ILoadD3dLib(): unable to LoadLibrary()");
+    }
+
+    CGxDeviceD3d::IUnloadD3dLib(d3dLib, d3d);
+
+    return 0;
+}
+
+void CGxDeviceD3d::IUnloadD3dLib(HINSTANCE& d3dLib, LPDIRECT3D9& d3d) {
+    if (d3d) {
+        d3d->Release();
+    }
+
+    if (d3dLib) {
+        FreeLibrary(d3dLib);
+    }
+}
+
+LRESULT CGxDeviceD3d::WindowProcD3d(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
+    // TODO
+    return 0;
+}
+
+void CGxDeviceD3d::CapsWindowSize(CRect& dst) {
+    // TODO
+}
+
+void CGxDeviceD3d::CapsWindowSizeInScreenCoords(CRect& dst) {
+    // TODO
+}
+
+int32_t CGxDeviceD3d::DeviceCreate(long (*windowProc)(void*, uint32_t, uint32_t, long), const CGxFormat& format) {
+    this->m_ownhwnd = 1;
+
+    // TODO gamma ramp
+
+    this->m_hwndClass = WindowClassCreate();
+
+    if (this->m_hwndClass) {
+        if (this->ICreateD3d() && this->CGxDevice::DeviceCreate(windowProc, format)) {
+            return 1;
+        } else {
+            // TODO
+            // this->DeviceDestroy();
+            return 0;
+        }
+    }
+
+    // TODO CGxDevice::Log("CGxDeviceD3d::DeviceCreate(): WindowClassCreate() failed: %s", OsGetLastErrorStr());
+    // TODO this->DeviceDestroy();
+
+    return 0;
+}
+
+int32_t CGxDeviceD3d::ICreateD3d() {
+    if (CGxDeviceD3d::ILoadD3dLib(this->m_d3dLib, this->m_d3d) && this->m_d3d->GetDeviceCaps(0, D3DDEVTYPE_HAL, &this->m_d3dCaps) >= S_OK) {
+        if (this->m_desktopDisplayMode.Format != D3DFMT_UNKNOWN) {
+            return 1;
+        }
+
+        D3DDISPLAYMODE displayMode;
+        if (this->m_d3d->GetAdapterDisplayMode(0, &displayMode) >= S_OK) {
+            this->m_desktopDisplayMode.Width = displayMode.Width;
+            this->m_desktopDisplayMode.Height = displayMode.Height;
+            this->m_desktopDisplayMode.RefreshRate = displayMode.RefreshRate;
+            this->m_desktopDisplayMode.Format = displayMode.Format;
+
+            return 1;
+        }
+    }
+
+    this->IDestroyD3d();
+
+    return 0;
+}
+
+void CGxDeviceD3d::IDestroyD3d() {
+    this->IDestroyD3dDevice();
+    CGxDeviceD3d::IUnloadD3dLib(this->m_d3dLib, this->m_d3d);
+}
+
+void CGxDeviceD3d::IDestroyD3dDevice() {
+    // TODO
+}
+
+void CGxDeviceD3d::IRsSendToHw(EGxRenderState rs) {
+    // TODO
+}
+
+void CGxDeviceD3d::IShaderCreate(CGxShader* shader) {
+    // TODO
+}
+
+void CGxDeviceD3d::ITexMarkAsUpdated(CGxTex* texId) {
+    // TODO
+}
+
+void CGxDeviceD3d::PoolSizeSet(CGxPool* pool, uint32_t size) {
+    // TODO
+}
+
+int32_t CGxDeviceD3d::StereoEnabled() {
+    // TODO
+    return 0;
+}

src/gx/d3d/CGxDeviceD3d.hpp

@@ -0,0 +1,41 @@
+#ifndef GX_D3D_C_GX_DEVICE_D3D_HPP
+#define GX_D3D_C_GX_DEVICE_D3D_HPP
+
+#include "gx/CGxDevice.hpp"                             
+#include <cstdint>
+#include <d3d9.h>
+#include <windows.h>
+
+class CGxDeviceD3d : public CGxDevice {
+    public:
+    // Static functions
+    static int32_t ILoadD3dLib(HINSTANCE& d3dLib, LPDIRECT3D9& d3d);
+    static void IUnloadD3dLib(HINSTANCE& d3dLib, LPDIRECT3D9& d3d);
+    static LRESULT WindowProcD3d(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+    // Member variables
+    ATOM m_hwndClass;
+    int32_t m_ownhwnd;
+    HINSTANCE m_d3dLib;
+    LPDIRECT3D9 m_d3d;
+    LPDIRECT3DDEVICE9 m_d3dDevice;
+    D3DCAPS9 m_d3dCaps;
+    D3DDISPLAYMODE m_desktopDisplayMode;
+
+    // Virtual member functions
+    virtual void ITexMarkAsUpdated(CGxTex* texId);
+    virtual void IRsSendToHw(EGxRenderState rs);
+    virtual int32_t DeviceCreate(long (*windowProc)(void*, uint32_t, uint32_t, long), const CGxFormat& format);
+    virtual void CapsWindowSize(CRect& dst);
+    virtual void CapsWindowSizeInScreenCoords(CRect& dst);
+    virtual void PoolSizeSet(CGxPool* pool, uint32_t size);
+    virtual void IShaderCreate(CGxShader* shader);
+    virtual int32_t StereoEnabled();
+
+    // Member functions
+    int32_t ICreateD3d();
+    void IDestroyD3d();
+    void IDestroyD3dDevice();
+};
+
+#endif