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/*
* Copyright (C) 2016 Google, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cassert>
#include <iostream>
#include <sstream>
#include "Helpers.h"
#include "Game.h"
#include "ShellWin32.h"
namespace {
class Win32Timer {
public:
Win32Timer()
{
LARGE_INTEGER freq;
QueryPerformanceFrequency(&freq);
freq_ = static_cast<double>(freq.QuadPart);
reset();
}
void reset()
{
QueryPerformanceCounter(&start_);
}
double get() const
{
LARGE_INTEGER now;
QueryPerformanceCounter(&now);
return static_cast<double>(now.QuadPart - start_.QuadPart) / freq_;
}
private:
double freq_;
LARGE_INTEGER start_;
};
} // namespace
ShellWin32::ShellWin32(Game &game) : Shell(game), hwnd_(nullptr)
{
instance_layers_.push_back("VK_LAYER_LUNARG_standard_validation");
instance_extensions_.push_back(VK_KHR_WIN32_SURFACE_EXTENSION_NAME);
init_vk();
}
ShellWin32::~ShellWin32()
{
cleanup_vk();
FreeLibrary(hmodule_);
}
void ShellWin32::create_window()
{
const std::string class_name(settings_.name + "WindowClass");
hinstance_ = GetModuleHandle(nullptr);
WNDCLASSEX win_class = {};
win_class.cbSize = sizeof(WNDCLASSEX);
win_class.style = CS_HREDRAW | CS_VREDRAW;
win_class.lpfnWndProc = window_proc;
win_class.hInstance = hinstance_;
win_class.hCursor = LoadCursor(nullptr, IDC_ARROW);
win_class.lpszClassName = class_name.c_str();
RegisterClassEx(&win_class);
const DWORD win_style =
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_VISIBLE | WS_OVERLAPPEDWINDOW;
RECT win_rect = { 0, 0, settings_.initial_width, settings_.initial_height };
AdjustWindowRect(&win_rect, win_style, false);
hwnd_ = CreateWindowEx(WS_EX_APPWINDOW,
class_name.c_str(),
settings_.name.c_str(),
win_style,
0,
0,
win_rect.right - win_rect.left,
win_rect.bottom - win_rect.top,
nullptr,
nullptr,
hinstance_,
nullptr);
SetForegroundWindow(hwnd_);
SetWindowLongPtr(hwnd_, GWLP_USERDATA, (LONG_PTR) this);
}
PFN_vkGetInstanceProcAddr ShellWin32::load_vk()
{
const char filename[] = "vulkan-1.dll";
HMODULE mod;
PFN_vkGetInstanceProcAddr get_proc;
mod = LoadLibrary(filename);
if (mod) {
get_proc = reinterpret_cast<PFN_vkGetInstanceProcAddr>(GetProcAddress(
mod, "vkGetInstanceProcAddr"));
}
if (!mod || !get_proc) {
std::stringstream ss;
ss << "failed to load " << filename;
if (mod)
FreeLibrary(mod);
throw std::runtime_error(ss.str());
}
hmodule_ = mod;
return get_proc;
}
bool ShellWin32::can_present(VkPhysicalDevice phy, uint32_t queue_family)
{
return vk::GetPhysicalDeviceWin32PresentationSupportKHR(
phy, queue_family) == VK_TRUE;
}
VkSurfaceKHR ShellWin32::create_surface(VkInstance instance)
{
VkWin32SurfaceCreateInfoKHR surface_info = {};
surface_info.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
surface_info.hinstance = hinstance_;
surface_info.hwnd = hwnd_;
VkSurfaceKHR surface;
vk::assert_success(vk::CreateWin32SurfaceKHR(instance, &surface_info, nullptr, &surface));
return surface;
}
LRESULT ShellWin32::handle_message(UINT msg, WPARAM wparam, LPARAM lparam)
{
switch (msg) {
case WM_SIZE:
{
UINT w = LOWORD(lparam);
UINT h = HIWORD(lparam);
resize_swapchain(w, h);
}
break;
case WM_KEYDOWN:
{
Game::Key key;
switch (wparam) {
case VK_ESCAPE:
key = Game::KEY_ESC;
break;
case VK_UP:
key = Game::KEY_UP;
break;
case VK_DOWN:
key = Game::KEY_DOWN;
break;
case VK_SPACE:
key = Game::KEY_SPACE;
break;
default:
key = Game::KEY_UNKNOWN;
break;
}
game_.on_key(key);
}
break;
case WM_CLOSE:
game_.on_key(Game::KEY_SHUTDOWN);
break;
case WM_DESTROY:
quit();
break;
default:
return DefWindowProc(hwnd_, msg, wparam, lparam);
break;
}
return 0;
}
void ShellWin32::quit()
{
PostQuitMessage(0);
}
void ShellWin32::run()
{
create_window();
create_context();
resize_swapchain(settings_.initial_width, settings_.initial_height);
Win32Timer timer;
double current_time = timer.get();
while (true) {
bool quit = false;
assert(settings_.animate);
// process all messages
MSG msg;
while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
if (msg.message == WM_QUIT) {
quit = true;
break;
}
TranslateMessage(&msg);
DispatchMessage(&msg);
}
if (quit)
break;
acquire_back_buffer();
double t = timer.get();
add_game_time(static_cast<float>(t - current_time));
present_back_buffer();
current_time = t;
}
destroy_context();
DestroyWindow(hwnd_);
}
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