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197 lines
5.0 KiB
C
197 lines
5.0 KiB
C
/**************************************************************************
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* *
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* Copyright (C) 1994, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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/**************************************************************************
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*
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* Sprite library include file
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*
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* $Revision: 1.16 $
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* $Date: 1998/04/17 05:03:46 $
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* $Source: /hosts/gate3/exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/sp.h,v $
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*
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**************************************************************************/
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#ifndef _SP_H_
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#define _SP_H_
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#ifdef _LANGUAGE_C_PLUS_PLUS
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extern "C" {
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#endif
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#include <PR/mbi.h>
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#include <PR/ultratypes.h>
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struct bitmap {
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s16 width; /* Size across to draw in texels */
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/* Done if width = 0 */
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s16 width_img; /* Size across of bitmap in texels */
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/* Done if width = 0 */
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s16 s; /* Horizontal offset into bitmap */
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/* if (s > width), then load only! */
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s16 t; /* Vertical offset into base */
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void *buf; /* Pointer to bitmap data */
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/* Don't re-load if new buf */
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/* is the same as the old one */
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/* Skip if NULL */
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s16 actualHeight; /* True Height of this bitmap piece */
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s16 LUToffset; /* LUT base index */
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};
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typedef struct bitmap Bitmap;
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struct sprite {
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s16 x,y; /* Target position */
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s16 width, height; /* Target size */
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f32 scalex, scaley; /* Texel to Pixel scale factor */
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s16 expx, expy; /* Explosion spacing */
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u16 attr; /* Attribute Flags */
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s16 zdepth; /* Z Depth */
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u8 red; /* Red component */
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u8 green; /* Green component */
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u8 blue; /* Blue component */
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u8 alpha; /* Alpha component */
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s16 startTLUT; /* Lookup Table Entry Starting index */
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s16 nTLUT; /* Total number of Lookup Table Entries */
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int *LUT; /* Pointer to Lookup Table */
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s16 istart; /* Starting bitmap index */
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s16 istep; /* Bitmaps index step (see SP_INCY) */
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/* if 0, then variable width bitmaps */
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s16 nbitmaps; /* Total number of bitmaps */
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s16 ndisplist; /* Total number of display-list words */
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s16 bmheight; /* Bitmap Texel height (Used) */
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s16 bmHreal; /* Bitmap Texel height (Real) */
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u8 bmfmt; /* Bitmap Format */
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u8 bmsiz; /* Bitmap Texel Size */
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Bitmap *bitmap; /* Pointer to first bitmap */
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Gfx *rsp_dl; /* Pointer to RSP display list */
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Gfx *rsp_dl_next; /* Pointer to next RSP display entry */
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s16 frac_s, /* Fractional Texture offsets */
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frac_t; /* These have 5 fraction bits */
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};
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typedef struct sprite Sprite;
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/*
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* DANGER!
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* This is bad programming. Where the *heck* do these numbers come
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* from?
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*
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* They are obviously 'maximums' from the sprite library, but since
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* the sprite library is built on top of gbi.h, which includes macros
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* that decode into multiple macros, etc., it is nearly impossible to
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* know what these maximums should be.
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*
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* Worse, there are some gbi macros (texture alignment mostly) that
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* decode into *many* macros, so if we choose that as a maximum, we
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* are wasting TONS of space...
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*
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* These numbers work for "reasonable" sprite library usage, and
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* there is an assert() in the library to detect when they aren't
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* enough. (use the debug version)
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*/
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#define DL_BM_OVERHEAD (12)
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#define DL_SPRITE_OVERHEAD (24)
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#define NUM_DL(nb) ((nb)*DL_BM_OVERHEAD +DL_SPRITE_OVERHEAD)
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/*
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* Misc constants
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*/
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#ifndef NULL
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#define NULL 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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/*
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* For sprite->attr
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*/
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#define SP_TRANSPARENT 0x00000001
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#define SP_CUTOUT 0x00000002
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#define SP_HIDDEN 0x00000004
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#define SP_Z 0x00000008
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#define SP_SCALE 0x00000010
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#define SP_FASTCOPY 0x00000020
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#define SP_OVERLAP 0x00000040
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#define SP_TEXSHIFT 0x00000080
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#define SP_FRACPOS 0x00000100
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#define SP_TEXSHUF 0x00000200
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#define SP_EXTERN 0x00000400
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/*
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* Function wrapper
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*/
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#if defined(F3DEX_GBI_2)
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#define spMove spX2Move
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#define spSetZ spX2SetZ
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#define spScissor spX2Scissor
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#define spDraw spX2Draw
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#define spInit spX2Init
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#define spFinish spX2Finish
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#elif defined(F3DEX_GBI)
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#define spMove spXMove
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#define spSetZ spXSetZ
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#define spScissor spXScissor
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#define spDraw spXDraw
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#define spInit spXInit
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#define spFinish spXFinish
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#endif
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/*
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* Function prototypes
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*/
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void spSetAttribute (Sprite *sp, s32 attr);
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void spClearAttribute (Sprite *sp, s32 attr);
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void spMove (Sprite *sp, s32 x, s32 y);
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void spScale (Sprite *sp, f32 sx, f32 sy);
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void spSetZ (Sprite *sp, s32 z );
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void spColor (Sprite *sp, u8 red, u8 green, u8 blue, u8 alpha);
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Gfx *spDraw (Sprite *sp);
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void spInit( Gfx **glistp );
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void spScissor( s32 xmin, s32 xmax, s32 ymin, s32 ymax );
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void spFinish( Gfx **glistp );
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#ifdef _LANGUAGE_C_PLUS_PLUS
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}
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#endif
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#endif /* _SP_H_ */
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