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D3DVERTEXELEMENT9

Started by The C modest god Oct 10, 2003 at 9:28 AM 1 replies 350+ views

Original Post

Oct 10, 2003 at 9:28 AM

When creating a ID3DXMESH an array of D3DVERTEXELEMENT9 is ruqired. Does that array describe the vertex data? If I have a structure of { D3DVECTOR position; D3DVECTOR normal; } How can the create mesh function tell what is the length of that array? What array I should create to describe it? I would appreaciate help on this matter. Thanks in advance.

neneboricua19

Oct 10, 2003 at 10:39 AM

Remember, vertex declarations are used only for shaders. If you''re not using shaders, then you don''t need a vertex declaration.


struct VERTEX
{
	D3DXVECTOR3 position;		// vertex position

	D3DXVECTOR3 normal;			// vertex normal

};

// Define FVF for fixed function pipeline

const DWORD D3DFVF_VERTEX = D3DFVF_XYZ | D3DFVF_NORMAL;

// Create equivalent vertex element structure for this vertex type to be used with vertex and pixel shaders

const D3DVERTEXELEMENT9 vertexDeclaration[] =
{
	{ 0, 0, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0 },
	{ 0, 12, D3DDECLTYPE_FLOAT3, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_NORMAL,  0 },
	D3DDECL_END()
};

Hope this helps,
neneboricua

The C modest god

Oct 10, 2003 at 12:50 PM

Thanks for the help

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