1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/* Copyright 2015-2018 Egor Yusov
*
* 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
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#include <memory>
#include <iomanip>
#include <Windows.h>
#include "NativeAppBase.h"
#include "StringTools.h"
#include "Timer.h"
std::unique_ptr<NativeAppBase> g_pTheApp;
LRESULT CALLBACK MessageProc(HWND, UINT, WPARAM, LPARAM);
// Main
int WINAPI WinMain(HINSTANCE instance, HINSTANCE, LPSTR, int cmdShow)
{
#if defined(_DEBUG) || defined(DEBUG)
_CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif
g_pTheApp.reset( CreateApplication() );
const auto *cmdLine = GetCommandLineA();
g_pTheApp->ProcessCommandLine(cmdLine);
std::wstring Title = Diligent::WidenString(g_pTheApp->GetAppTitle());
// Register our window class
WNDCLASSEX wcex = { sizeof(WNDCLASSEX), CS_HREDRAW|CS_VREDRAW, MessageProc,
0L, 0L, instance, NULL, NULL, NULL, NULL, L"SampleApp", NULL };
RegisterClassEx(&wcex);
// Create a window
LONG WindowWidth = 1280;
LONG WindowHeight = 1024;
RECT rc = { 0, 0, WindowWidth, WindowHeight };
AdjustWindowRect(&rc, WS_OVERLAPPEDWINDOW, FALSE);
HWND wnd = CreateWindow(L"SampleApp", Title.c_str(),
WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
rc.right-rc.left, rc.bottom-rc.top, NULL, NULL, instance, NULL);
if (!wnd)
{
MessageBox(NULL, L"Cannot create window", L"Error", MB_OK|MB_ICONERROR);
return 0;
}
ShowWindow(wnd, cmdShow);
UpdateWindow(wnd);
g_pTheApp->OnWindowCreated(wnd, WindowWidth, WindowHeight);
Diligent::Timer Timer;
auto PrevTime = Timer.GetElapsedTime();
double filteredFrameTime = 0.0;
// Main message loop
MSG msg = {0};
while (WM_QUIT != msg.message)
{
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else
{
auto CurrTime = Timer.GetElapsedTime();
auto ElapsedTime = CurrTime - PrevTime;
PrevTime = CurrTime;
g_pTheApp->Update(CurrTime, ElapsedTime);
g_pTheApp->Render();
g_pTheApp->Present();
double filterScale = 0.2;
filteredFrameTime = filteredFrameTime * (1.0 - filterScale) + filterScale * ElapsedTime;
std::wstringstream fpsCounterSS;
fpsCounterSS << " - " << std::fixed << std::setprecision(1) << filteredFrameTime * 1000;
fpsCounterSS << " ms (" << 1.0 / filteredFrameTime << " fps)";
SetWindowText(wnd, (Title + fpsCounterSS.str()).c_str());
}
}
g_pTheApp.reset();
return (int)msg.wParam;
}
// Called every time the NativeNativeAppBase receives a message
LRESULT CALLBACK MessageProc(HWND wnd, UINT message, WPARAM wParam, LPARAM lParam)
{
auto res = g_pTheApp->HandleWin32Message(wnd, message, wParam, lParam);
if (res != 0)
return res;
switch (message)
{
case WM_PAINT:
{
PAINTSTRUCT ps;
BeginPaint(wnd, &ps);
EndPaint(wnd, &ps);
return 0;
}
case WM_SIZE: // Window size has been changed
if( g_pTheApp )
{
g_pTheApp->Resize(LOWORD(lParam), HIWORD(lParam));
}
return 0;
case WM_CHAR:
if (wParam == VK_ESCAPE)
PostQuitMessage(0);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
return DefWindowProc(wnd, message, wParam, lParam);
}
}
|
