ID3DXLine::Begin method
Prepares a device for drawing lines.
Syntax
HRESULT Begin();
Parameters
This method has no parameters.
Return value
Type: HRESULT
If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, D3DXERR_INVALIDDATA.
Remarks
Calling ID3DXLine::Begin is optional. If called outside of a ID3DXLine::Begin/ID3DXLine::End sequence, the draw functions will internally call ID3DXLine::Begin and ID3DXLine::End. To avoid extra overhead, this method should be used if more than one draw function will be called successively.
This method must be called from inside an IDirect3DDevice9::BeginScene and IDirect3DDevice9::EndScene sequence.
ID3DXLine::Begin cannot be used as a substitute for either IDirect3DDevice9::BeginScene or ID3DXRenderToSurface::BeginScene.
Requirements
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See also