/*
 * Copyright (c) 1993-1995 Argonaut Technologies Limited. All rights reserved.
 *
 * $Id: pstate.h 2.1 1996/03/15 17:24:59 sam Exp $
 * $Locker:  $
 *
 * Private primitive state structure
 */
#ifndef _PSTATE_H_
#define _PSTATE_H_

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Mask bits for state
 */
enum {
	MASK_STATE_OUTPUT		= BR_STATE_OUTPUT,
	MASK_STATE_PRIMITIVE	= BR_STATE_PRIMITIVE,
    MASK_STATE_CACHE        = BR_STATE_CACHE,

	MASK_STATE_ALL			= BR_STATE_OUTPUT|BR_STATE_PRIMITIVE
};






/*
 * state.surface.flags
 */
enum {
	/*
	 * The public flags
	 */
	PRIMF_SMOOTH_BIT,
	PRIMF_PERSPECTIVE_BIT,
	PRIMF_DECAL_BIT,
	PRIMF_DEPTH_WRITE_BIT,
	PRIMF_COLOUR_WRITE_BIT,
	PRIMF_INDEXED_COLOUR_BIT,
	PRIMF_BLEND_BIT,
	PRIMF_MODULATE_BIT,

	/*
	 * Internal flags using for matching
	 */
	PRIMF_OPAQUE_MAP_BIT,
	PRIMF_NO_SKIP_BIT,
	PRIMF_TEXTURE_BUFFER_BIT,
};




enum {
	PRIMF_SMOOTH			= (1<<PRIMF_SMOOTH_BIT),
	PRIMF_PERSPECTIVE		= (1<<PRIMF_PERSPECTIVE_BIT),
	PRIMF_DECAL				= (1<<PRIMF_DECAL_BIT),
	PRIMF_DEPTH_WRITE		= (1<<PRIMF_DEPTH_WRITE_BIT),
	PRIMF_COLOUR_WRITE   	= (1<<PRIMF_COLOUR_WRITE_BIT),
	PRIMF_INDEXED_COLOUR   	= (1<<PRIMF_INDEXED_COLOUR_BIT),
	PRIMF_BLEND			   	= (1<<PRIMF_BLEND_BIT),
	PRIMF_MODULATE		   	= (1<<PRIMF_MODULATE_BIT),



	PRIMF_OPAQUE_MAP		= (1<<PRIMF_OPAQUE_MAP_BIT),
	PRIMF_NO_SKIP			= (1<<PRIMF_NO_SKIP_BIT),
	PRIMF_TEXTURE_BUFFER	= (1<<PRIMF_TEXTURE_BUFFER_BIT),


	PRIMF_INTERNAL			= (PRIMF_OPAQUE_MAP| PRIMF_NO_SKIP | PRIMF_TEXTURE_BUFFER)
};


struct output_buffer {
	/*
	 * object on pixelmap
	 */
	struct br_device_pixelmap *pixelmap;

	/*
	 * Cached info about current buffer - used to detect
	 * changes that will affect primitive lookup
	 */
	br_uint_32 width;
	br_uint_32 height;
	br_uint_32 type;
};

typedef struct br_primitive_state {
	/*
	 * Dispatch table
	 */
	struct br_primitive_state_dispatch *dispatch;

	/*
	 * Standard object identifier
	 */
	char *identifier;

	struct br_primitive_library *plib;
	
	/*
	 * flags
	 */
//    br_uint_32 flags;


    /* PRIMITIVE part of state */
    struct
       {
       // Timestamp
       br_uint_32 timestamp;

       // Timestamp for changes other than input buffer addresses
       br_uint_32 timestamp_major;

       // flags
       br_uint_32 flags;

       // Type of colour
       br_token colour_type;

       // Current input buffers
       struct br_buffer_stored *colour_map;

       // SFX control
       br_token    map_antialiasing;
       br_token    map_interpolation;
       br_token    mip_interpolation;
       br_token    fog_type;
       br_colour   fog_colour;
       float       fog_min;
       float       fog_max;
       float       alpha_val;
       } prim;

    // OUTPUT part of state
    struct
       {
       br_uint_32 timestamp;
       br_uint_32 timestamp_major;
       struct output_buffer colour;
       struct output_buffer depth;
       } out;



    // Cached info derived from rest of state
    struct
       {
       struct local_block *last_block;
       br_token last_type;

       float comp_offsets[NUM_COMPONENTS];
       float comp_scales[NUM_COMPONENTS];

       br_uint_32 timestamp_prim;
       br_uint_32 timestamp_out;
       } cache;


} br_primitive_state;

#ifdef __cplusplus
};
#endif
#endif