Provided by: allegro5-doc_5.0.10-2_all 

NAME
ALLEGRO_PRIM_ATTR - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro_primitives.h>
typedef enum ALLEGRO_PRIM_ATTR
DESCRIPTION
Enumerates the types of vertex attributes that a custom vertex may have.
• ALLEGRO_PRIM_POSITION - Position information, can be stored only in ALLEGRO_PRIM_SHORT_2,
ALLEGRO_PRIM_FLOAT_2 and ALLEGRO_PRIM_FLOAT_3.
• ALLEGRO_PRIM_COLOR_ATTR - Color information, stored in an ALLEGRO_COLOR(3alleg5). The storage field of
ALLEGRO_VERTEX_ELEMENT is ignored
• ALLEGRO_PRIM_TEX_COORD - Texture coordinate information, can be stored only in ALLEGRO_PRIM_FLOAT_2 and
ALLEGRO_PRIM_SHORT_2. These coordinates are normalized by the width and height of the texture, meaning
that the bottom-right corner has texture coordinates of (1, 1).
• ALLEGRO_PRIM_TEX_COORD_PIXEL - Texture coordinate information, can be stored only in
ALLEGRO_PRIM_FLOAT_2 and ALLEGRO_PRIM_SHORT_2. These coordinates are measured in pixels.
SEE ALSO
ALLEGRO_VERTEX_DECL(3alleg5), ALLEGRO_PRIM_STORAGE(3alleg5)
Allegro reference manual ALLEGRO_PRIM_ATTR(3alleg5)()