Program slow down on keyboard input

Kuzco (64)
I am going insane.
For some strange reason, my program is slowing down when I click my keyboard - no matter which button.
I am not handling the WM_KEYDOWN message at all, or doing anything that has to do with input, so I don't see why it happens.

I have removed all unessasary code to try to find the problem, and I am only left with my Windows code and Direct3D to draw images. So I guess there's something wrong with my Sprite class? I've been using it for months and never noticed any problem with it, and it doesn't make any sence that it is the problem, so I don't know.

The program as it is now is drawing 256 Manchester United logos which is moving horizontally with no limit on the FPS. And when I click any button on my keyboard, I can notice them all moving at least 50% slower.

I realize there's a lot of code, but can anyone see what might cause this to happen?
Oh and I know my code might be ugly and need comments some places :P


BuggedProgram.h
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
 
#ifndef BUGGEDPROGRAM_H
#define BUGGEDPROGRAM_H

// Includes
#include <Windows.h>
#include <windowsx.h>
#include <D3D10.h>
#include <D3DX10.h>
#include "Sprite.h" 

// Globals
HWND windowHandle;
HINSTANCE hInstance;
int winWidth = 800;
int winHeight = 700;
ID3D10Device* pD3DDevice;
IDXGISwapChain* pSwapChain;
ID3D10RenderTargetView* pRenderTargetView;
D3DXMATRIX matProjection;

// Function prototypes
LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
void InitializeWindow();
void SetUpDirectX();
void Render();

#endif


BuggedProgram.cpp
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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
 
#include "BuggedProgram.h"

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow)
{
	// Set up window
	InitializeWindow();
	SetUpDirectX();

	// Message loop
	MSG msg = { };
	while (WM_QUIT != msg.message)
	{
		while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) == TRUE)
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}

		Render();
	}
	return (int) msg.wParam;
}

LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg)
	{
	case WM_SIZE:
		{
			winWidth = LOWORD(lParam);
			winHeight = HIWORD(lParam);

			if (pSwapChain)
			{
				pD3DDevice->OMSetRenderTargets(0, 0, 0);
				pRenderTargetView->Release();
				
				pSwapChain->ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0);

				ID3D10Texture2D* pBuffer;
				pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (void**) &pBuffer);
				pD3DDevice->CreateRenderTargetView(pBuffer, NULL, &pRenderTargetView);
				pBuffer->Release();

				pD3DDevice->OMSetRenderTargets(1, &pRenderTargetView, NULL);

				// Set the viewport
				D3D10_VIEWPORT viewPort;
				viewPort.Width = winWidth;
				viewPort.Height = winHeight;
				viewPort.MinDepth = 0.0f;
				viewPort.MaxDepth = 1.0f;
				viewPort.TopLeftX = 0;
				viewPort.TopLeftY = 0;
				pD3DDevice->RSSetViewports(1, &viewPort);

				// Set projection matrix
				D3DXMatrixOrthoOffCenterLH(
					&matProjection,
					(float)viewPort.TopLeftX,
					(float)viewPort.Width,
					(float)viewPort.TopLeftY,
					(float)viewPort.Height,
					0.1f,
					10);

				Sprite::spriteObject->SetProjectionTransform(&matProjection);
			}
		} break;

	//case WM_KEYDOWN:
	//	{

	//	} break;

	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return 0;
		} break;
	}

	return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

void InitializeWindow()
{
	// Window class
	WNDCLASS wc = {};
	wc.lpfnWndProc = WindowProc;
	wc.hInstance = hInstance;
	wc.lpszClassName = L"WindowClass";
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	RegisterClass(&wc);

	// Create window
	windowHandle = CreateWindowEx(
		0,
		L"WindowClass",
		L"Bugged program",
		WS_OVERLAPPEDWINDOW,
		0, 0,
		winWidth, winHeight,
		NULL,
		NULL,
		hInstance,
		NULL);

	// Show window
	ShowWindow(windowHandle, SW_SHOWMAXIMIZED);
}

void SetUpDirectX()
{
	// Swap chain
	DXGI_SWAP_CHAIN_DESC swapChainDesc;
	ZeroMemory(&swapChainDesc, sizeof(swapChainDesc));
	swapChainDesc.BufferCount = 1;
	swapChainDesc.BufferDesc.Width = winWidth;
	swapChainDesc.BufferDesc.Height = winHeight;
	swapChainDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
	swapChainDesc.BufferDesc.RefreshRate.Numerator = 60;
	swapChainDesc.BufferDesc.RefreshRate.Denominator = 1;
	swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
	swapChainDesc.OutputWindow = windowHandle;
	swapChainDesc.SampleDesc.Count = 1;
	swapChainDesc.SampleDesc.Quality = 0;
	swapChainDesc.Windowed = true;

	// Create device and swap chain
	D3D10CreateDeviceAndSwapChain(
		NULL,
		D3D10_DRIVER_TYPE_HARDWARE,
		NULL,
		0,
		D3D10_SDK_VERSION,
		&swapChainDesc,
		&pSwapChain,
		&pD3DDevice);

	// Set the render target
	ID3D10Texture2D *pBackBuffer;
	pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID*)&pBackBuffer);
	pD3DDevice->CreateRenderTargetView(pBackBuffer, NULL, &pRenderTargetView);
	pBackBuffer->Release();
	pD3DDevice->OMSetRenderTargets(1, &pRenderTargetView, NULL);

	// Set the viewport
	D3D10_VIEWPORT viewPort;
	viewPort.Width = winWidth;
	viewPort.Height = winHeight;
	viewPort.MinDepth = 0.0f;
	viewPort.MaxDepth = 1.0f;
	viewPort.TopLeftX = 0;
	viewPort.TopLeftY = 0;
	pD3DDevice->RSSetViewports(1, &viewPort);

	// Set projection matrix
	D3DXMatrixOrthoOffCenterLH(
		&matProjection,
		(float)viewPort.TopLeftX,
		(float)viewPort.Width,
		(float)viewPort.TopLeftY,
		(float)viewPort.Height,
		0.1f,
		10);
}

void Render()
{
	// Lots of Manchester United logos rollin'
	static int xPos = 0;
	for (int x = 0 - (winWidth / 15); x < winWidth; x += winWidth / 15)
		for (int y = 0; y < winHeight; y += winHeight / 15)
			Sprite(L"ManULogo.png", x + xPos, y, winWidth / 15, winHeight / 15);
	++xPos;
	if (xPos > winWidth / 15)
		xPos = 0;

	// Render sprites
	if (pD3DDevice && Sprite::spriteObject)
	{
		pD3DDevice->ClearRenderTargetView(pRenderTargetView, D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f));
		Sprite::spriteObject->Begin(D3DX10_SPRITE_SORT_TEXTURE);
		Sprite::spriteObject->DrawSpritesImmediate(Sprite::spritePool, Sprite::numActiveSprites, 0, 0);
		Sprite::spriteObject->End();
		pSwapChain->Present(0, 0);
		Sprite::numActiveSprites = 0;
	}
}



I couldn't stay inside the 8192 character limit if I posted my Sprite class as well, but I doubt it is the problem. I've been using it for months and it has always worked ok.
I will post it if needed.
writetonsharma (1461)
I haven't see the code but did you see if the painting is taking this time or you may be doing unnecessary painting which is slowing things?
Topic archived. No new replies allowed.