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POVery high CPU usage directx 9
 

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  1. POVery high CPU usage directx 9
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    <p>I'm going to use DirectX, so I'm using directxtutorial.com tutorial. When I run my game, it has very high cpu usage. It takes all power of the first core of my processor. I have Celeron e3400. I think it's much more than I need to run my game without anything. </p> <p>Sorry for that bunch of code. I have no idea what could be wrong. Here is my code:</p> <pre><code>#include &lt;windows.h&gt; #include &lt;windowsx.h&gt; #include &lt;d3d9.h&gt; #pragma (lib, "d3d9.lib") #define Width_X 1024 #define Height_Y 768 LPDIRECT3D9 d3d; LPDIRECT3DDEVICE9 d3d_device; void d3d_initialize(HWND hWnd); void render_frame(); void d3d_clear(); void d3d_initialize(HWND hWnd) { d3d = Direct3DCreate9(32); // value for dx9 = 32, i think D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&amp;d3dpp,sizeof(d3dpp)); d3dpp.Windowed = false; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.hDeviceWindow = hWnd; d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8; // set the back buffer format to 32-bit d3dpp.BackBufferWidth = Width_X; // set the width of the buffer d3dpp.BackBufferHeight = Height_Y; d3d-&gt;CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &amp;d3dpp, &amp;d3d_device); } void render_frame() { d3d_device-&gt;Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(54, 222, 10), 1.0f, 0); d3d_device-&gt;BeginScene(); d3d_device-&gt;EndScene(); d3d_device-&gt;Present(NULL, NULL, NULL, NULL); } void cleanD3D(void) { d3d_device-&gt;Release(); // close and release the 3D device d3d-&gt;Release(); // close and release Direct3D } LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { HWND hWnd; WNDCLASSEX wc; ZeroMemory(&amp;wc, sizeof(WNDCLASSEX)); wc.cbSize = sizeof(WNDCLASSEX); wc.style = CS_HREDRAW | CS_VREDRAW; wc.lpfnWndProc = WindowProc; wc.hInstance = hInstance; wc.hCursor = LoadCursor(NULL, IDC_ARROW); //wc.hbrBackground = (HBRUSH)COLOR_WINDOW; wc.lpszClassName = "WindowClass1"; RegisterClassEx(&amp;wc); hWnd = CreateWindowExW(NULL, L"WindowClass1", // name of the window class L"Test", // title of the window WS_EX_TOPMOST ,//| WS_POPUP, // window style // 0, // x-position of the window 0, // y-position of the window Width_X, // width of the window Height_Y, // height of the window NULL, // we have no parent window, NULL NULL, // we aren't using menus, NULL hInstance, // application handle NULL); // used with multiple windows, NULL ShowWindow(hWnd, nCmdShow); d3d_initialize(hWnd); MSG msg; while(TRUE) { while(PeekMessage(&amp;msg, NULL, 0, 0, PM_REMOVE)) { TranslateMessage(&amp;msg); DispatchMessage(&amp;msg); } if(msg.message == WM_QUIT) break; render_frame(); } return msg.wParam; cleanD3D(); } LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { switch(message) { case WM_DESTROY: { PostQuitMessage(0); return 0; } break; } return DefWindowProc (hWnd, message, wParam, lParam); } </code></pre>
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    1. COWithout an explicit frame capping technique in place, a directx app will use 100% of the processor, rendering as many frames per second as possible.
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    2. COOh. Then i have 2 more questions : how can i see my fps, and how do i limit them? Thank you.
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    3. COThen see e.g. http://stackoverflow.com/q/5508922/11683.
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