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Minimal D3D code

Started by Christiaan Apr 26, 2000 at 1:59 AM 1 reply 900+ views

Original Post

Apr 26, 2000 at 1:59 AM

Can someone give me the absolute minimal code to initialize Direct3D and draw a triangle on screen I just can''t figure out how to do it or.... probably I''m just too lazy to read the all the unclear tutorials... chris

WitchLord

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WitchLord

Apr 26, 2000 at 5:31 AM

First you need to create the window. I''ll assume you know how to do that until you tell me otherwise.

Then you can initalize D3D with the following code

D3DXInitialize();
IDirect3DXContext *pContext;
D3DXCreateContext(D3DX_DEFAULT,0,hWnd,D3DX_DEFAULT,D3DX_DEFAULT,&pContext);
IDirect3DDevice7 *p3DDev;
pD3DDev = pContext->GetD3DDevice();
pContext->SetClearColor(0xFFFFFFFF);

Then you can render a triangle like this:

pContext->Clear(D3DCLEAR_TARGET/D3DCLEAR_ZBUFFER);
D3DVERTEX Verts[3] = {
D3DVERTEX(D3DVECTOR(1,-1,1),D3DVECTOR(0,0,-1),0,0),
D3DVERTEX(D3DVECTOR(-1,-1,1),D3DVECTOR(0,0,-1),0,0),
D3DVERTEX(D3DVECTOR(0,1,1),D3DVECTOR(0,0,-1),0,0)};
pD3DDev->DrawPrimitive(D3DPT_TRIANGLELIST,D3DFVF_VERTEX,Verts,3,0);
pContext->UpdateFrame(0);

Finally you clean up the code like this

pD3DDev->Release();
pContext->Release();
D3DXUnitialize();

This code should render a black triangle on a white background.

- WitchLord

Buster

Apr 26, 2000 at 11:58 AM

Microsoft''s DX help files show you the code for that.

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