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main_dx9.cpp
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main_dx9.cpp
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#define WIN32_LEAN_AND_MEAN
#define NOMINMAX
#include <windows.h>
#include <d3d9.h>
#include <atomic>
#include <memory>
#include <chrono>
#include <thread>
#include "draw_manager.hpp"
#include "impl/d3d9_manager.hpp"
#include "math.h"
LRESULT CALLBACK window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam);
bool create_window();
bool create_draw_context();
void destroy_draw_context();
void reset_d3d9_device();
void draw();
extern void user_thread_impl();
int window_size_x = 1280;
int window_size_y = 720;
WNDCLASS window_class = {};
HWND window_handle = nullptr;
LPDIRECT3D9 d3d9_instance = nullptr;
LPDIRECT3DDEVICE9 d3d9_device = nullptr;
D3DPRESENT_PARAMETERS d3d9_present_params = {};
auto do_reset = false;
std::atomic<int> fps = 0;
auto fps_counter = 0;
auto fps_counter_start_time = 0ull;
std::unique_ptr<util::draw::draw_manager> draw_manager = nullptr;
auto stop_user_thread = false;
extern std::atomic<util::draw::tex_id> tex;
extern std::atomic<bool> reset_tex;
std::thread user_thread;
int main()
{
if (!create_window())
return 1;
ShowWindow(window_handle, SW_SHOW);
if (!create_draw_context())
return 1;
draw_manager = std::make_unique<util::draw::d3d9_manager>(d3d9_device);
draw_manager->update_screen_size(util::draw::position{
static_cast<float>(window_size_x),
static_cast<float>(window_size_y)
});
user_thread = std::thread{user_thread_impl};
MSG msg;
std::memset(&msg, 0, sizeof(MSG));
while (msg.message != WM_QUIT)
{
if (PeekMessage(&msg, nullptr, 0u, 0u, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
continue;
}
draw();
}
stop_user_thread = true;
user_thread.join();
destroy_draw_context();
DestroyWindow(window_handle);
UnregisterClass(window_class.lpszClassName, window_class.hInstance);
return 0;
}
void draw()
{
using namespace std::chrono;
const auto ms = duration_cast<milliseconds>(steady_clock::now().time_since_epoch()).count();
if (fps_counter_start_time == 0ull)
{
fps_counter_start_time = ms;
}
else if (ms - fps_counter_start_time >= 1000ull)
{
fps = fps_counter;
fps_counter = 0;
fps_counter_start_time = ms;
char buffer[128];
std::snprintf(buffer, 128, "D3D9 Test Window - FPS: %d", fps.load());
SetWindowTextA(window_handle, buffer);
}
d3d9_device->SetRenderState(D3DRS_ZENABLE, false);
d3d9_device->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
d3d9_device->SetRenderState(D3DRS_SCISSORTESTENABLE, false);
const auto clear_col = D3DCOLOR_RGBA(0, 0, 0, 255);
d3d9_device->Clear(0, nullptr, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col, 1.f, 0);
if (d3d9_device->BeginScene() >= 0)
{
draw_manager->draw();
d3d9_device->EndScene();
}
const auto res = d3d9_device->Present(nullptr, nullptr, nullptr, nullptr);
if (do_reset || (res == D3DERR_DEVICELOST && d3d9_device->TestCooperativeLevel() == D3DERR_DEVICENOTRESET))
{
reset_d3d9_device();
do_reset = false;
}
fps_counter++;
}
bool create_window()
{
const auto class_name = "Draw Manager";
window_class.lpfnWndProc = &window_proc;
window_class.hInstance = GetModuleHandleA(nullptr);
window_class.lpszClassName = class_name;
if (!RegisterClassA(&window_class))
return false;
window_handle = CreateWindowExA(0,
class_name,
"D3D9 Test Window - FPS: 0",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
window_size_x,
window_size_y,
nullptr,
nullptr,
GetModuleHandleA(nullptr),
nullptr);
return (window_handle != nullptr);
}
LRESULT __stdcall window_proc(const HWND wnd, const UINT msg, const WPARAM wparam, const LPARAM lparam)
{
switch (msg)
{
case WM_SIZE:
{
if (d3d9_device && wparam != SIZE_MINIMIZED)
{
d3d9_present_params.BackBufferWidth = LOWORD(lparam);
d3d9_present_params.BackBufferHeight = HIWORD(lparam);
do_reset = true;
//reset_d3d9_device();
}
if (draw_manager && wparam != SIZE_MINIMIZED)
{
draw_manager->update_screen_size(util::draw::position{
static_cast<float>(LOWORD(lparam)),
static_cast<float>(HIWORD(lparam))
});
}
return 0;
}
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
return DefWindowProcA(wnd, msg, wparam, lparam);
}
}
bool create_draw_context()
{
d3d9_instance = Direct3DCreate9(D3D_SDK_VERSION);
if (!d3d9_instance)
return false;
std::memset(&d3d9_present_params, 0, sizeof(d3d9_present_params));
d3d9_present_params.Windowed = true;
d3d9_present_params.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3d9_present_params.BackBufferFormat = D3DFMT_A8R8G8B8;
d3d9_present_params.EnableAutoDepthStencil = true;
d3d9_present_params.AutoDepthStencilFormat = D3DFMT_D16;
d3d9_present_params.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
d3d9_present_params.BackBufferWidth = window_size_x;
d3d9_present_params.BackBufferHeight = window_size_y;
if (d3d9_instance->CreateDevice(D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
window_handle,
D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_MULTITHREADED,
&d3d9_present_params,
&d3d9_device) != D3D_OK)
return false;
return true;
}
void destroy_draw_context()
{
if (d3d9_device)
d3d9_device->Release();
if (d3d9_instance)
d3d9_instance->Release();
}
void reset_d3d9_device()
{
reinterpret_cast<util::draw::d3d9_manager*>(draw_manager.get())->invalidate_device_objects();
const auto res = d3d9_device->Reset(&d3d9_present_params);
assert(res == D3D_OK);
reinterpret_cast<util::draw::d3d9_manager*>(draw_manager.get())->create_device_objects();
}