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.