// API Function Definitions
void pbrtInit(const Options &opt) {
PbrtOptions = opt;
// API Initialization
if (currentApiState != APIState::Uninitialized)
Error("pbrtInit() has already been called.");
currentApiState = APIState::OptionsBlock;
renderOptions.reset(new RenderOptions);
graphicsState = GraphicsState();
// General \pbrt Initialization
SampledSpectrum::Init();
InitProfiler();
}
void InitApplication(u32 windowWidth, u32 windowHeight, ApplicationFlagsEnum flags, ApplicationPresentProfileEnum profile, i32 adapterIndex) {
GDisplaySettings.resolution.x = windowWidth;
GDisplaySettings.resolution.y = windowHeight;
switch (profile) {
case APP_PRESENT_THROUGHPUT:
{
GDisplaySettings.vsync = 1;
GDisplaySettings.backbuffers_num = 3;
GDisplaySettings.max_gpu_buffered_frames = 3;
GDisplaySettings.wait_to_vblank = false;
}
break;
case APP_PRESENT_UNTHROTTLED:
{
GDisplaySettings.vsync = 0;
GDisplaySettings.backbuffers_num = 3;
GDisplaySettings.max_gpu_buffered_frames = 3;
GDisplaySettings.wait_to_vblank = false;
}
break;
case APP_PRESENT_LOWLATENCY:
{
GDisplaySettings.vsync = 1;
GDisplaySettings.backbuffers_num = 3;
GDisplaySettings.max_gpu_buffered_frames = 2;
GDisplaySettings.wait_to_vblank = true;
}
break;
case APP_PRESENT_VERYLOWLATENCY:
{
GDisplaySettings.vsync = 1;
GDisplaySettings.backbuffers_num = 2;
GDisplaySettings.max_gpu_buffered_frames = 1;
GDisplaySettings.wait_to_vblank = true;
}
break;
default:
Check(0);
}
InitMainThread();
InitProfiler();
PROFILE_NAME_THREAD("Main");
InitScheduler();
InitSDL(&SDLWindow);
InitDevice(GDisplaySettings.hwnd, false, flags & APP_FLAG_D3D12_DEBUG, adapterIndex);
InitRenderingEngines();
InitResources();
GGPUMainQueue = CreateQueue(TEXT_("3d_engine"), GPUQueueEnum::Direct);
GGPUCopyQueue = CreateQueue(TEXT_("copy_engine"), GPUQueueEnum::Copy);
CreateSwapChain(GetD12Queue(GGPUMainQueue));
ImGuiIO& io = ImGui::GetIO();
io.KeyMap[ImGuiKey_Tab] = SDL_SCANCODE_TAB;
io.KeyMap[ImGuiKey_LeftArrow] = SDL_SCANCODE_LEFT;
io.KeyMap[ImGuiKey_RightArrow] = SDL_SCANCODE_RIGHT;
io.KeyMap[ImGuiKey_UpArrow] = SDL_SCANCODE_UP;
io.KeyMap[ImGuiKey_DownArrow] = SDL_SCANCODE_DOWN;
io.KeyMap[ImGuiKey_Home] = SDL_SCANCODE_HOME;
io.KeyMap[ImGuiKey_End] = SDL_SCANCODE_END;
io.KeyMap[ImGuiKey_Delete] = SDL_SCANCODE_DELETE;
io.KeyMap[ImGuiKey_Backspace] = SDL_SCANCODE_BACKSPACE;
io.KeyMap[ImGuiKey_Enter] = SDL_SCANCODE_RETURN;
io.KeyMap[ImGuiKey_Escape] = SDL_SCANCODE_ESCAPE;
io.KeyMap[ImGuiKey_A] = SDL_SCANCODE_A;
io.KeyMap[ImGuiKey_C] = SDL_SCANCODE_C;
io.KeyMap[ImGuiKey_V] = SDL_SCANCODE_V;
io.KeyMap[ImGuiKey_X] = SDL_SCANCODE_X;
io.KeyMap[ImGuiKey_Y] = SDL_SCANCODE_Y;
io.KeyMap[ImGuiKey_Z] = SDL_SCANCODE_Z;
io.RenderDrawListsFn = Essence::RenderImDrawLists;
io.ImeWindowHandle = GDisplaySettings.hwnd;
io.Fonts->AddFontDefault();
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
io.Fonts->TexID = nullptr;
D3D12_SUBRESOURCE_DATA imageData;
imageData.pData = pixels;
imageData.RowPitch = sizeof(u32) * width;
imageData.SlicePitch = sizeof(u32) * width * height;
auto fontsTexture = CreateTexture2D(width, height, DXGI_FORMAT_R8G8B8A8_UNORM, NO_TEXTURE_FLAGS, "font_texture");
CopyFromCpuToSubresources(GGPUCopyQueue, Slice(fontsTexture), 1, &imageData);
io.Fonts->TexID = HandleToImGuiTexID(fontsTexture);
GApplicationInitializeFunction();
// after issuing init copies waiting for completion
QueueWait(GGPUMainQueue, GetLastSignaledFence(GGPUCopyQueue));
}
