Which is better?

johnc82 · 2003-12-16T09:41:31

hi... Code A: #include <d3d8.h> #include <d3dx8.h> #include <mmsystem.h> #include <iostream> using namespace std; HRESULT RegisterWinClass(HINSTANCE &, WNDPROC, LPSTR); HRESULT CreateWinEx(HWND &hWnd, HINSTANCE &, LPSTR, LPSTR); VOID SetupMatrix(); HRESULT IntilGeometry(); HRESULT IntilDX(HWND &); VOID Render(); WPARAM MainLoop(); LRESULT WINAPI MainMsg(HWND, UINT, WPARAM, LPARAM); HWND g_hWnd = NULL; HDC g_hDc = NULL; LPDIRECT3D8 g_d3d8 = NULL; LPDIRECT3DDEVICE8 g_d3ddevice8 = NULL; LPDIRECT3DVERTEXBUFFER8 g_d3dvb8 = NULL; struct CUSTOMVERTEX{ float x, y, z; DWORD color; }; #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ | D3DFVF_DIFFUSE) INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, INT) { if(FAILED(RegisterWinClass(hInstance, MainMsg, "DXTest3"))) { return -1; } if(FAILED(CreateWinEx(g_hWnd, hInstance, "DXTest3", "Direct X Test 3"))) { return -2; } if(FAILED(IntilDX(g_hWnd))) { return -3; } if(FAILED(IntilGeometry())) { return -4; } ShowWindow(g_hWnd, SW_SHOW); UpdateWindow(g_hWnd); return (int)MainLoop(); } HRESULT RegisterWinClass(HINSTANCE &hInstance, WNDPROC wndProc, LPSTR className) { WNDCLASSEX wcx; wcx.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; wcx.cbSize = sizeof(WNDCLASSEX); wcx.lpszClassName = className; wcx.hInstance = hInstance; wcx.lpfnWndProc = wndProc; wcx.hbrBackground = NULL; wcx.hCursor = LoadCursor(NULL, IDC_ARROW); wcx.hIcon = LoadIcon(NULL, IDI_APPLICATION); wcx.hIconSm = LoadIcon(NULL, IDI_WINLOGO); wcx.cbClsExtra = NULL; wcx.cbWndExtra = NULL; wcx.lpszMenuName = NULL; if(!RegisterClassEx(&wcx)) { return E_FAIL; } return S_OK; } HRESULT CreateWinEx(HWND &hWnd, HINSTANCE &hInstance, LPSTR className, LPSTR winCaption) { hWnd = CreateWindowEx(NULL, className, winCaption, WS_OVERLAPPEDWINDOW, 0, 0, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); if(!hWnd) { return E_FAIL; } return S_OK; } VOID SetupMatrix() { D3DXMATRIX matWorld; D3DXMatrixRotationY(&matWorld, timeGetTime()/150.0f ); g_d3ddevice8->SetTransform(D3DTS_WORLD, &matWorld); D3DXMATRIX matView; D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3( 0.0f, 3.0f,-5.0f), &D3DXVECTOR3( 0.0f, 0.0f, 0.0f), &D3DXVECTOR3( 0.0f, 1.0f, 0.0f)); g_d3ddevice8->SetTransform(D3DTS_VIEW, &matView); D3DXMATRIX matProj; D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f ); g_d3ddevice8->SetTransform(D3DTS_PROJECTION, &matProj); } HRESULT IntilGeometry() { CUSTOMVERTEX vertex[] = { {-1.0f, -1.0f, 0.0f, D3DXCOLOR( 255.0f, 0.0f, 0.0f, 0.0f)}, { 1.0f, -1.0f, 0.0f, D3DXCOLOR( 0.0f, 255.0f, 0.0f, 0.0f)}, { 0.0f, 1.0f, 0.0f, D3DXCOLOR( 0.0f, 0.0f, 255.0f, 0.0f)} }; if(FAILED(g_d3ddevice8->CreateVertexBuffer(3*sizeof(CUSTOMVERTEX), 0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_d3dvb8))) { return E_FAIL; } VOID *pVertex; if(FAILED(g_d3dvb8->Lock(0, sizeof(vertex), (BYTE**)&pVertex, 0))) { return E_FAIL; } memcpy(pVertex, vertex, sizeof(vertex)); g_d3dvb8->Unlock(); return S_OK; } HRESULT IntilDX(HWND &hWnd) { if((g_d3d8 = Direct3DCreate8(D3D_SDK_VERSION)) == NULL) { return E_FAIL; } D3DDISPLAYMODE d3ddm; if(FAILED(g_d3d8->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm))) { return E_FAIL; } D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(D3DPRESENT_PARAMETERS)); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = d3ddm.Format; if(FAILED(g_d3d8->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_d3ddevice8))) { return E_FAIL; } g_d3ddevice8->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE); g_d3ddevice8->SetRenderState(D3DRS_LIGHTING, FALSE); return S_OK; } VOID Render() { g_d3ddevice8->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0); g_d3ddevice8->BeginScene(); SetupMatrix(); g_d3ddevice8->SetStreamSource(0, g_d3dvb8, sizeof(CUSTOMVERTEX)); g_d3ddevice8->SetVertexShader(D3DFVF_CUSTOMVERTEX); g_d3ddevice8->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 1); g_d3ddevice8->EndScene(); g_d3ddevice8->Present(NULL, NULL, NULL, NULL); } WPARAM MainLoop() { MSG msg; ZeroMemory(&msg, sizeof(msg)); bool done = false; while(!done) { if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { if(msg.message == WM_QUIT) { done = true; break; } TranslateMessage(&msg;; DispatchMessage(&msg;; } else { Render(); } } return msg.wParam; } LRESULT WINAPI MainMsg(HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam) { switch(uiMsg) { case WM_PAINT: { break; } case WM_CLOSE: { PostQuitMessage(0); break; } case WM_DESTROY: { PostQuitMessage(0); break; } default: { break; } } return DefWindowProc(hWnd, uiMsg, wParam, lParam); } And here is.... Code B: #include <d3d8.h> #include <d3dx8.h> #include <mmsystem.h> #include <iostream> using namespace std; HRESULT RegisterWinClass(HINSTANCE &, WNDPROC, LPSTR); HRESULT CreateWinEx(HWND &hWnd, HINSTANCE &, LPSTR, LPSTR); VOID SetupMatrix(); HRESULT IntilGeometry(); HRESULT IntilDX(HWND &); VOID Render(); WPARAM MainLoop(); LRESULT WINAPI MainMsg(HWND, UINT, WPARAM, LPARAM); HWND g_hWnd = NULL; HDC g_hDc = NULL; LPDIRECT3D8 g_d3d8 = NULL; LPDIRECT3DDEVICE8 g_d3ddevice8 = NULL; LPDIRECT3DVERTEXBUFFER8 g_d3dvb8 = NULL; struct CUSTOMVERTEX{ float x, y, z; DWORD color; }; #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ | D3DFVF_DIFFUSE) CUSTOMVERTEX g_vertex[] = { {-1.0f, -1.0f, 0.0f, D3DXCOLOR( 255.0f, 0.0f, 0.0f, 0.0f)}, { 1.0f, -1.0f, 0.0f, D3DXCOLOR( 0.0f, 255.0f, 0.0f, 0.0f)}, { 0.0f, 1.0f, 0.0f, D3DXCOLOR( 0.0f, 0.0f, 255.0f, 0.0f)} }; INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, INT) { if(FAILED(RegisterWinClass(hInstance, MainMsg, "DXTest3"))) { return -1; } if(FAILED(CreateWinEx(g_hWnd, hInstance, "DXTest3", "Direct X Test 3"))) { return -2; } if(FAILED(IntilDX(g_hWnd))) { return -3; } if(FAILED(IntilGeometry())) { return -4; } ShowWindow(g_hWnd, SW_SHOW); UpdateWindow(g_hWnd); return (int)MainLoop(); } HRESULT RegisterWinClass(HINSTANCE &hInstance, WNDPROC wndProc, LPSTR className) { WNDCLASSEX wcx; wcx.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; wcx.cbSize = sizeof(WNDCLASSEX); wcx.lpszClassName = className; wcx.hInstance = hInstance; wcx.lpfnWndProc = wndProc; wcx.hbrBackground = NULL; wcx.hCursor = LoadCursor(NULL, IDC_ARROW); wcx.hIcon = LoadIcon(NULL, IDI_APPLICATION); wcx.hIconSm = LoadIcon(NULL, IDI_WINLOGO); wcx.cbClsExtra = NULL; wcx.cbWndExtra = NULL; wcx.lpszMenuName = NULL; if(!RegisterClassEx(&wcx)) { return E_FAIL; } return S_OK; } HRESULT CreateWinEx(HWND &hWnd, HINSTANCE &hInstance, LPSTR className, LPSTR winCaption) { hWnd = CreateWindowEx(NULL, className, winCaption, WS_OVERLAPPEDWINDOW, 0, 0, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); if(!hWnd) { return E_FAIL; } return S_OK; } VOID SetupMatrix() { D3DXMATRIX matWorld; D3DXMatrixRotationY(&matWorld, timeGetTime()/150.0f ); g_d3ddevice8->SetTransform(D3DTS_WORLD, &matWorld); D3DXMATRIX matView; D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3( 0.0f, 3.0f,-5.0f), &D3DXVECTOR3( 0.0f, 0.0f, 0.0f), &D3DXVECTOR3( 0.0f, 1.0f, 0.0f)); g_d3ddevice8->SetTransform(D3DTS_VIEW, &matView); D3DXMATRIX matProj; D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f ); g_d3ddevice8->SetTransform(D3DTS_PROJECTION, &matProj); } HRESULT IntilGeometry() { if(FAILED(g_d3ddevice8->CreateVertexBuffer(3*sizeof(CUSTOMVERTEX), 0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_d3dvb8))) { return E_FAIL; } /*VOID *pVertex; if(FAILED(g_d3dvb8->Lock(0, sizeof(vertex), (BYTE**)&pVertex, 0))) { return E_FAIL; } memcpy(pVertex, vertex, sizeof(vertex)); g_d3dvb8->Unlock();*/ return S_OK; } HRESULT IntilDX(HWND &hWnd) { if((g_d3d8 = Direct3DCreate8(D3D_SDK_VERSION)) == NULL) { return E_FAIL; } D3DDISPLAYMODE d3ddm; if(FAILED(g_d3d8->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm))) { return E_FAIL; } D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(D3DPRESENT_PARAMETERS)); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = d3ddm.Format; if(FAILED(g_d3d8->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_d3ddevice8))) { return E_FAIL; } g_d3ddevice8->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE); g_d3ddevice8->SetRenderState(D3DRS_LIGHTING, FALSE); return S_OK; } VOID Render() { g_d3ddevice8->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0); g_d3ddevice8->BeginScene(); SetupMatrix(); VOID *pVertex; g_d3dvb8->Lock(0, sizeof(g_vertex), (BYTE**)&pVertex, 0); memcpy(pVertex, g_vertex, sizeof(g_vertex)); g_d3dvb8->Unlock(); g_d3ddevice8->SetStreamSource(0, g_d3dvb8, sizeof(CUSTOMVERTEX)); g_d3ddevice8->SetVertexShader(D3DFVF_CUSTOMVERTEX); g_d3ddevice8->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 1); g_d3ddevice8->EndScene(); g_d3ddevice8->Present(NULL, NULL, NULL, NULL); } WPARAM MainLoop() { MSG msg; ZeroMemory(&msg, sizeof(msg)); bool done = false; while(!done) { if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { if(msg.message == WM_QUIT) { done = true; break; } TranslateMessage(&msg;; DispatchMessage(&msg;; } else { Render(); } } return msg.wParam; } LRESULT WINAPI MainMsg(HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam) { switch(uiMsg) { case WM_PAINT: { break; } case WM_CLOSE: { PostQuitMessage(0); break; } case WM_DESTROY: { PostQuitMessage(0); break; } default: { break; } } return DefWindowProc(hWnd, uiMsg, wParam, lParam); } Which one is better A or B .... in term of Lock() and Unlock() procedure.... Thanks

Graphics and GPU Programming Programming

Started by johnc82 December 14, 2003 10:46 AM

10 comments, last by johnc82 20 years, 4 months ago

siaspete

208

December 16, 2003 05:04 AM

Locking a vertex buffer to just update one vertex is a bit of a waste. Your app will lose a lot of performance.

What is your vertex data, and what kind of effect are you creating?

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Saurus Games, home of the Independent Game Engine

JoeyBlow2

100

December 16, 2003 09:41 AM

Keep in mind johnc82,

That with the newer hardware (with hardware T&L) it likes all the vertex buffers static. It should be uploaded to the card at initialization time. Dynamic is ok, but slower than static data since the vertex need to be transferred over the AGP bus every frame. With static it gets uploaded to the graphics card once, then it stores it in its own memory and renders from there.

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