Jump to content
  • Advertisement

Archived

This topic is now archived and is closed to further replies.

ofer

FVF and tex coordinate sizes

This topic is 5899 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

hi there. here is my my fvf- (D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX2|D3DFVF_TEXCOORDSIZE1(D3DFVF_TEXTUREFORMAT2)|D3DFVF_TEXCOORDSIZE2(D3DFVF_TEXTUREFORMAT3)) this is supposed to describe the next vertex structure- struct Vertex { vector3 position; vector3 normal; D3DXVECTOR2 TexCoord0; vector3 TexCoord1; }; well, when trying to lock the vertex buffer, i get an error that i tried to lock more than the buffer''s size. i.e. VertexNum*sizeof(Vertex)>VertexNum*sizeof(FVF) you see what i mean? my fvf describes a smaller vertex than my vertex data. just to let you know, i generate my VB using CloneMeshFVF(), and than copying the VB from it. any idea what should my FVF look like?

Share this post


Link to post
Share on other sites
Advertisement
I think the correct FVF for the struct would be :

(D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX2|D3DFVF_TEXCOORDSIZE2(0)|D3DFVF_TEXCOORDSIZE3(1))

What you had wrong (i think) was that you thought D3DFVF_TEXCOORDSIZE1 described the size of the texture coordinate for unit 1 and same mistake for unit two

I could be wrong but I think D3DFVF_TEXCOORDSIZE1 actually describes the texture unit supplied as a parameter as a 1d tex coord, D3DFVF_TEXCOORDSIZE2 as a 2d and so on. (note 1st texture unit has index 0).

[edited by - Grambo on July 27, 2002 5:55:35 AM]

Share this post


Link to post
Share on other sites
thnx, that was the problem. now the model is drawn correctly. now i just need to get the function D3DXComputeTangent to work. it returns DS_OK but doesnt compute anything.

Share this post


Link to post
Share on other sites

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!