/*
 * "ATTRIBUT.H"
 * 
 * Part of The Escotia Playstation Library 
 *
 * Functions to make programming a chore not a pleasure
 *
 * Author:	ScoTT Campbell
 * Date:	11/9/98
 *
*/

#ifndef __ESCATTRIHEADER
#define __ESCATTRIHEADER



/* Attribute Macros */

#define NORMAL_SEMI_TRANSPARENCY			(unsigned long int)(0)
#define PIXEL_ADDITION_TRANSPARENCY			(unsigned long int)(1<<28)
#define PIXEL_SUBTRACTION_TRANSPARENCY		(unsigned long int)(1<<29)
#define QUARTER_PIXEL_ADDITION_TRANSPARENCY	(unsigned long int)(3<<29)

#define SEMI_TRANSPARENCY_ON				(unsigned long int)(1<<30)
#define SEMI_TRANSPARENCY_OFF				(unsigned long int)(0)

#define DISPLAY_ON							(unsigned long int)(0)
#define DISPLAY_OFF							(unsigned long int)(1<<31)


unsigned long int CreateAttribute(unsigned long int transparencyType, unsigned long int transparencySwitch,
								  unsigned long int displaySwitch);
/* Pre:  The three arguments given are from the above macros in the relevant order							*/
/* Post: The value returned will be the attribute value required to satisfy the specified macro attributes	*/
/* CreateAttribute() will give a value that can be assigned to the type who's attributes you want to set	*/
/* Note CreateSpriteAttribute() should be used for sprites													*/


/* These definitions only make sense when used with sprites */

#define SPRITE_BRIGHTNESS_REGULATION_ON		(unsigned long int)(0)		// Switch brightness regulation on
#define SPRITE_BRIGHTNESS_REGULATION_OFF	(unsigned long int)(1<<6)	// Switch brightness regulation off

#define SPRITE_ROTATION_ON					(unsigned long int)(1<<27)	// Switch rotation and scaling on
#define SPRITE_ROTATION_OFF					(unsigned long int)(0)		// Switch rotation and scaling off

unsigned long int CreateSpriteAttribute(unsigned long int brightnessSwitch, unsigned long int rotationSwitch,
										unsigned long int transparencyType, unsigned long int transparencySwitch,
										unsigned long int displaySwitch);
/* Pre:  The three arguments given are from the above macros in the relevant order							*/
/* Post: The value returned will be the attribute value required to satisfy the specified macro attributes	*/
/* CreateAttribute() will give a value that can be assigned to the sprite who's attributes you want to set	*/
/* Note CreateAttribute() should be used for types other than GsSPRITE										*/







#endif