LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
return true;
switch (msg)
{
case WM_SIZE:
if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
{
ImGui_ImplDX12_InvalidateDeviceObjects();
CleanupRenderTarget();
ResizeSwapChain(hWnd, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam));
CreateRenderTarget();
ImGui_ImplDX12_CreateDeviceObjects();
}
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
return 0;
break;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}
bool SwapChain::SetVSync(bool enabled)
{
if (m_vsync_enabled == enabled)
return true;
// Resizing recreates the swap chain with the new present mode.
m_vsync_enabled = enabled;
return ResizeSwapChain();
}
i32 RunApplicationMainLoop() {
SDL_Event event;
bool active = true;
while (active) {
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_QUIT:
active = false;
break;
case SDL_KEYDOWN:
if (event.key.keysym.sym == SDLK_ESCAPE) {
active = false;
break;
}
else {
GApplicationKeyDownFunction(event.key.keysym.sym);
}
break;
case SDL_TEXTINPUT:
{
GApplicationTextInputFunction((wchar_t*)event.text.text);
}
break;
case SDL_MOUSEWHEEL:
{
GApplicationMouseWheelFunction(event.wheel.y);
}
break;
case SDL_DROPFILE:
{
const char* path = event.drop.file;
GApplicationFileDropFunction(path);
SDL_free((void*)path);
}
break;
case SDL_WINDOWEVENT:
{
switch (event.window.event) {
case SDL_WINDOWEVENT_RESIZED:
{
GDisplaySettings.resolution.x = event.window.data1;
GDisplaySettings.resolution.y = event.window.data2;
WaitForCompletion();
ResizeSwapChain(GDisplaySettings.resolution.x, GDisplaySettings.resolution.y);
GApplicationWindowResizeFunction();
}
break;
}
}
break;
}
}
static INT64 PreviousTime = 0;
static INT64 TicksPerSecond = 0;
INT64 currentTime;
Verify(QueryPerformanceCounter((LARGE_INTEGER *)¤tTime));
double DeltaTime = (double)(currentTime - PreviousTime) / (double)TicksPerSecond;
if (TicksPerSecond == 0) {
Verify(QueryPerformanceFrequency((LARGE_INTEGER *)&TicksPerSecond));
DeltaTime = 1. / 60.;
}
PreviousTime = currentTime;
float fDeltaTime = (float)DeltaTime;
ImGuiIO& io = ImGui::GetIO();
RECT rect;
GetClientRect(GDisplaySettings.hwnd, &rect);
io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));
io.DeltaTime = (float)DeltaTime;
io.MouseDrawCursor = true;
SDL_ShowCursor(SDL_DISABLE);
io.KeyShift = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_LSHIFT];
io.KeyCtrl = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_LCTRL];
io.KeyAlt = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_LALT];
io.KeysDown[SDL_SCANCODE_TAB] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_TAB];
io.KeysDown[SDL_SCANCODE_LEFT] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_LEFT];
io.KeysDown[SDL_SCANCODE_RIGHT] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_RIGHT];
io.KeysDown[SDL_SCANCODE_UP] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_UP];
io.KeysDown[SDL_SCANCODE_DOWN] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_DOWN];
io.KeysDown[SDL_SCANCODE_HOME] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_HOME];
io.KeysDown[SDL_SCANCODE_END] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_END];
io.KeysDown[SDL_SCANCODE_DELETE] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_DELETE];
io.KeysDown[SDL_SCANCODE_RETURN] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_RETURN];
io.KeysDown[SDL_SCANCODE_ESCAPE] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_ESCAPE];
io.KeysDown[SDL_SCANCODE_BACKSPACE] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_BACKSPACE];
io.KeysDown[SDL_SCANCODE_A] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_A];
io.KeysDown[SDL_SCANCODE_C] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_C];
io.KeysDown[SDL_SCANCODE_V] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_V];
io.KeysDown[SDL_SCANCODE_X] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_X];
io.KeysDown[SDL_SCANCODE_Y] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_Y];
io.KeysDown[SDL_SCANCODE_Z] = !!SDL_GetKeyboardState(NULL)[SDL_SCANCODE_Z];
int x, y;
auto buttonState = SDL_GetMouseState(&x, &y);
io.MousePos = ImVec2((float)x, (float)y);
io.MouseDown[0] = !!(buttonState & SDL_BUTTON(SDL_BUTTON_LEFT));
io.MouseDown[1] = !!(buttonState & SDL_BUTTON(SDL_BUTTON_RIGHT));
io.MouseDown[2] = !!(buttonState & SDL_BUTTON(SDL_BUTTON_MIDDLE));
ImGui::NewFrame();
GApplicationTickFunction(fDeltaTime);
EndCommandsFrame(GGPUMainQueue);
}
GApplicationShutdownFunction();
WaitForCompletion();
FreeModelsMemory();
ImGui::Shutdown();
ShutdownRenderingEngines();
ShutdownResources();
ShutdownDevice();
FreeShadersMemory();
ShutdownSDL(SDLWindow);
ShutdownScheduler();
ShutdownProfiler();
ShutdownMainThread();
return 0;
}
void Renderer::ResizeBuffers(_In_ const Window::WindowSize & NewSize)
{
ReleaseSizeDependentBuffers();
ResizeSwapChain(NewSize);
RecreateSizeDependentBuffers();
}
