RE: [Plib-devel] User defined texture formats

[Dave M. <Dav...@dy...>]

> I think SSG needs to have some hooks to allow user defined image
> formats... Would this be useful to anyone else?

Yes.  Very much.  I'm working on a hook for leaf creation during
model load which is perhaps a more general case of what you want.

When a leaf is created, the hook function can decide what it wants
to do.  It could call it's own image loader for the texture.

Other uses of a hook function during leaf creation include sharing
ssgSimpleState entities, culling unwanted geometry, recomputing
normals, and ignoring texture mapping coordinates/images.

struct ssgCreateLeafData
{
  char* parentName ;
  GLenum gltype ;
  ssgVertexArray *vl ;
  ssgNormalArray *nl ;
  ssgTexCoordArray *tl ;
  ssgColourArray *cl ;
  ssgSimpleState *st ;	//setTexture() not yet called
  char* tfname ;		//nonzero if has texture
} ;

typedef ssgLeaf* (*ssgCreateLeafFunc)( ssgCreateLeafData* data ) ;

I was going to wait until plib1.2 but I could commit now if
Steve permits

--Dave