// ----------------------------------------------------------------------------
VertexAttribute *
vertex_attribute_parse( char *format )
{
// Generic attribute
char *p = strpbrk ( format, "0123456789" );
if (p == format)
{
// Normalized
p = strpbrk ( format, "n" );
if ( p != NULL )
{
int size, index;
char ctype;
sscanf( format, "%dgn%d%c", &index, &size, &ctype );
{
GLenum type = GL_TYPE( ctype );
return vertex_attribute_new( 0, index, size, type, GL_TRUE, 0, 0 );
}
}
else
{
int size, index;
char ctype;
sscanf( format, "%dg%d%c", &index, &size, &ctype );
{
GLenum type = GL_TYPE( ctype );
return vertex_attribute_new( 0, index, size, type, GL_FALSE, 0, 0 );
}
}
}
// Known attribute
p = strpbrk ( format, "vcntfse" );
if ( p != 0 )
{
int size;
char ctarget, ctype;
sscanf( format, "%c%d%c", &ctarget, &size, &ctype );
{
GLenum type = GL_TYPE( ctype );
GLenum target = GL_VERTEX_ATTRIBUTE_TARGET( ctarget );
return vertex_attribute_new( target, 0, size, type, GL_FALSE, 0, 0 );
}
}
fprintf(stderr, "Vertex attribute format not understood\n");
return 0;
}
// ----------------------------------------------------------------------------
VertexAttribute *
vertex_attribute_parse( int index, char *format )
{
char* p = strpbrk ( format, "vcntfse" );
if ( p != 0 )
{
int size;
char ctarget, ctype;
sscanf( format, "%c%d%c", &ctarget, &size, &ctype );
GLenum type = GL_TYPE( ctype );
return vertex_attribute_new( index, size, type, GL_FALSE, 0, 0 );
}
fprintf(stderr, "Vertex attribute format not understood\n");
return 0;
}