Draw a Textured Quad

falcon93 · 2012-09-25T20:02:17

Hello everyone! I'm trying to draw a textured quad made from 4 vertices using DirectX9. I've followed some tutorials but it simply wont work. I've pasted the code below and I would appreciate it very much if someone could look through it and help me. I know that the code should be splitted up into methods and classes, but before i do that I want to keep it as simple as possible and be able to see and learn the entire process. What i want this code to do is to simply draw my quad with a texture on it. Could anyone please help me? My current code (I've also attached the project): #include <windows.h> #include <d3d9.h> #include <d3dx9.h> #define FULLSCREEN FALSE #define SCREEN_WIDTH 1280 #define SCREEN_HEIGHT 800 #pragma comment (lib, "d3d9.lib") #pragma comment (lib, "d3dx9.lib") const DWORD D3DFVF_TLVERTEX = D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_TEX1; struct TLVERTEX { float x, y, z; float rhw; D3DCOLOR color; float u, v; }; LPDIRECT3D9 d3d; LPDIRECT3DDEVICE9 d3ddev; LPDIRECT3DVERTEXBUFFER9 vertexBuffer; D3DPRESENT_PARAMETERS d3dpp; LPDIRECT3DTEXTURE9 d3dTexture; TLVERTEX* vertices; LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); HRESULT WINAPI D3DXCreateTextureFromFile(LPDIRECT3DDEVICE9 pDevice, LPCTSTR pSrcFile, LPDIRECT3DTEXTURE9 *ppTexture); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { HWND hWnd; WNDCLASSEX wc; MSG msg; ZeroMemory(&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.lpszClassName = L"WindowClass"; RegisterClassEx(&wc); if (FULLSCREEN) { hWnd = CreateWindowEx(NULL, L"WindowClass", L"Window 1", WS_EX_TOPMOST | WS_POPUP, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, NULL, NULL, hInstance, NULL); } else { hWnd = CreateWindowEx(NULL, L"WindowClass", L"Window 1", WS_OVERLAPPEDWINDOW, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, NULL, NULL, hInstance, NULL); } ShowWindow(hWnd, nCmdShow); d3d = Direct3DCreate9(D3D_SDK_VERSION); ZeroMemory(&d3dpp, sizeof(d3dpp)); d3dpp.Windowed = !FULLSCREEN; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.hDeviceWindow = hWnd; d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8; d3dpp.BackBufferWidth = SCREEN_WIDTH; d3dpp.BackBufferHeight = SCREEN_HEIGHT; d3d -> CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &d3ddev); d3ddev -> CreateVertexBuffer(sizeof(TLVERTEX) * 4, NULL, D3DFVF_TLVERTEX, D3DPOOL_MANAGED, &vertexBuffer, NULL); vertexBuffer->Lock(0, 0, (void**)&vertices, NULL); vertices[0].x = 0.0F; vertices[0].y = 0.0F; vertices[0].z = 0.0F; vertices[0].u = 0.0F; vertices[0].v = 0.0F; vertices[0].rhw = 1.0F; vertices[0].color = D3DCOLOR_ARGB(255, 255, 255, 255); vertices[0].x = 64.0F; vertices[0].y = 0.0F; vertices[0].z = 0.0F; vertices[0].u = 1.0F; vertices[0].v = 0.0F; vertices[0].rhw = 1.0F; vertices[0].color = D3DCOLOR_ARGB(255, 255, 255, 255); vertices[0].x = 0.0F; vertices[0].y = 64.0F; vertices[0].z = 0.0F; vertices[0].u = 0.0F; vertices[0].v = 1.0F; vertices[0].rhw = 1.0F; vertices[0].color = D3DCOLOR_ARGB(255, 255, 255, 255); vertices[0].x = 64.0F; vertices[0].y = 64.0F; vertices[0].z = 0.0F; vertices[0].u = 1.0F; vertices[0].v = 1.0F; vertices[0].rhw = 1.0F; vertices[0].color = D3DCOLOR_ARGB(255, 255, 255, 255); vertexBuffer->Unlock(); VOID* pVoid; vertexBuffer -> Lock(0, 0, (void**)&pVoid, 0); memcpy(pVoid, vertices, sizeof(vertices)); vertexBuffer -> Unlock(); D3DXCreateTextureFromFile(d3ddev, L"ParticleSmokeCloud64x64.png", &d3dTexture); while (TRUE) { while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { TranslateMessage(&msg); DispatchMessage (&msg); } if (msg.message == WM_QUIT) break; d3ddev -> Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(255, 255, 255), 1.0f, 0); d3ddev -> BeginScene(); d3ddev -> SetRenderState(D3DRS_LIGHTING, FALSE); d3ddev -> SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE); d3ddev -> SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA); d3ddev -> SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA); d3ddev -> SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE); d3ddev -> SetTexture (0, d3dTexture); d3ddev -> SetVertexShader(NULL); d3ddev -> SetFVF(D3DFVF_TLVERTEX); d3ddev -> SetStreamSource(0, vertexBuffer, 0, sizeof(TLVERTEX)); d3ddev -> DrawPrimitive (D3DPT_TRIANGLEFAN, 0, 2); d3ddev -> EndScene(); d3ddev -> Present(NULL, NULL, NULL, NULL); } d3ddev -> Release(); d3d -> Release(); return msg.wParam; } 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); }

For Beginners

Started by falcon93 September 22, 2012 01:49 PM

9 comments, last by falcon93 11 years, 6 months ago

falcon93

121

Author

September 25, 2012 08:02 PM

Yes, I've compiled it a couple of times and it builds successfully, the window appears and there's something drawn, but it draws realy strange (see image in previous post).

I'll move on to DirectX11 instead. Exciting

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