CALLBACKS

To make library usage polyvalent as possible, it will no care about some tasks.You need to write theses
tasks and declare them to the module.Theses are values accepted by MD3_SetOption () :

=I/O=

I/O function needs to be defined by caller to allow control of memory allocation and if program uses
archives system instead of direct file loading.

$$MD3_OPTION_FOPEN

   fOpen(STRING filename, mode)
       -filename : file to be loaded
       -mode : module will pass only $$RD (defined in xblite)

return the file handle

$$MD3_OPTION_FREAD

   fRead (hFile, lpBuffer, nNumberOfBytesToRead)
       -hFile : file handle
       -lpBuffer : where datas will be loaded
       -nNumberOfBytesToRead : self explanatory

return the ammount of bytes rode

$$MD3_OPTION_FCLOSE

   fClose(hFile)
       -hFile : file to close

no return value

$$MD3_OPTION_FSEEK

   fSeek(hFile, lDistanceToMove)
       -hFile : handle to file
       -lDistanceToMove : position to seek, absolute

return position

$$MD3_OPTION_PRINT

   Print(STRING text$)
       -text$ : text emitted by the module, various informations when processing a file

no return value

$$MD3_OPTION_MALLOC

   mAlloc(nbytes)
       -nbytes : ammount of bytes to allocate

return adress of the bytes allocated, this adress is used as a handle too

$$MD3_OPTION_MFREE

   mFree(addr/hdl)
       -addr : adress of the bytes to free, this is a handle too

=SHADERS=

$$MD3_OPTION_SHADER_LOAD

   Shader_Load(STRING shadername)
       -shadername : shader to load

   The module will not care about shader managing but these function must be defined

Return shaderID of the loaded shader

$$MD3_OPTION_SHADER_FREE

   Shader_Free(XLONG shaderID)
       -shaderID : ID of the shader loaded by Shader_Load


   The module will not care about shader managing but these function must be defined

no return value

=Rendering=

The module allows to use your own renderer procedure.This is very usefull if you uses delayed rendering,
multipass rendering, depth sorting, transparence managing, stack rendering... ...etc

$$MD3_OPTION_PUSH_SURFACE

   PushSurface (tMD3Model MD3m[],tMD3instance instance,XLONG shaderID,XLONG surface)
       -MD3m[] : an array containing all the models loaded by the module.Index to the targeted model can be
       found in 'instance.model'
       -instance : instance targeted
       -ShaderID : Shader used by the surface, the module will not care about it, just a reference
       -surface:surfaceID of the surface to be rendered

This function is called by BuildRender ().You can use the default renderer if you want to render directly the
surface by calling MD3_RenderMethod (tMD3instance @instance,surface,flags)