setting up a vertexbuffer with multiple texture coordinates

[akuehn3000]

Hello everyone,

 

what´s the best way to set up a vertexbuffer that should support multiple

texture coordinates?

I tried the following:

 

public struct MyVertex

{

public float X,Y,Z;

public float Nx,Ny,Nz;

public float Tu,Tv;

public float Tu1,Tv1;

}

 

VertexElement[] decl = new VertexElement[] {

new VertexElement(

0,0,

DeclarationType.Float3,

DeclarationMethod.Default,

DeclarationUsage.Position,

0

),

new VertexElement(

0,12,

DeclarationType.Float3,

DeclarationMethod.Default,

DeclarationUsage.Normal,

0

),

new VertexElement(

0,24,

DeclarationType.Float2,

DeclarationMethod.Default,

DeclarationUsage.TextureCoordinate,

0

),

new VertexElement(

0,32,

DeclarationType.Float2,

DeclarationMethod.Default,

DeclarationUsage.TextureCoordinate,

0

),

VertexElement.VertexDeclarationEnd

};

 

VertexDeclaration ourDeclaration = new VertexDeclaration(device, decl);

 

device.VertexFormat = VertexFormats.Position | VertexFormats.Normal |

VertexFormats.Texture0 | VertexFormats.Texture1;

VertexFormats bufferFormat = device.VertexFormat;

 

device.VertexDeclaration = ourDeclaration;

 

But I get an error when trying instantiate the VertexDeclaration. Any ideas

what´s wrong or how it could be done better?

[rifter1818]

Could be that the usage for both Texture coordinants are the same,... try new vertexelement(.....,texturecoordinant,0) and new vertexelement(.....texturecoordinant,1) for those two in the dec.

[akuehn3000]

thank you. that was the problem. and i have to use texturecoordinate2 instead of texturecoordinate0 | texturecoordinate1 as format.