420 lines
15 KiB
C
420 lines
15 KiB
C
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Definitions for graphics lib.
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*
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*/
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#ifndef _GR_H
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#define _GR_H
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#include "pstypes.h"
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#include "maths.h"
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#include "palette.h"
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#include "dxxsconf.h"
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#include "fmtcheck.h"
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#ifdef DXX_BUILD_DESCENT_I
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extern int HiresGFXAvailable;
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#endif
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// some defines for transparency and blending
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#define TRANSPARENCY_COLOR 255 // palette entry of transparency color -- 255 on the PC
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#define GR_FADE_LEVELS 34
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#define GR_FADE_OFF GR_FADE_LEVELS // yes, max means OFF - don't screw that up
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#define GR_BLEND_NORMAL 0 // normal blending
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#define GR_BLEND_ADDITIVE_A 1 // additive alpha blending
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#define GR_BLEND_ADDITIVE_C 2 // additive color blending
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#define GWIDTH grd_curcanv->cv_bitmap.bm_w
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#define GHEIGHT grd_curcanv->cv_bitmap.bm_h
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#define SWIDTH (grd_curscreen->sc_w)
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#define SHEIGHT (grd_curscreen->sc_h)
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#if defined(DXX_BUILD_DESCENT_I)
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#define HIRESMODE HiresGFXAvailable // descent.pig either contains hires or lowres graphics, not both
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#endif
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#if defined(DXX_BUILD_DESCENT_II)
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#define HIRESMODE (SWIDTH >= 640 && SHEIGHT >= 480 && !GameArg.GfxSkipHiresGFX)
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#endif
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#define MAX_BMP_SIZE(width, height) (4 + ((width) + 2) * (height))
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#define SCRNS_DIR "screenshots/"
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struct grs_point
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{
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fix x,y;
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};
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//these are control characters that have special meaning in the font code
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#define CC_COLOR 1 //next char is new foreground color
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#define CC_LSPACING 2 //next char specifies line spacing
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#define CC_UNDERLINE 3 //next char is underlined
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//now have string versions of these control characters (can concat inside a string)
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#define CC_COLOR_S "\x1" //next char is new foreground color
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#define CC_LSPACING_S "\x2" //next char specifies line spacing
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#define CC_UNDERLINE_S "\x3" //next char is underlined
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#define BM_LINEAR 0
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#define BM_MODEX 1
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#define BM_SVGA 2
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#define BM_RGB15 3 //5 bits each r,g,b stored at 16 bits
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#define BM_SVGA15 4
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#ifdef OGL
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#define BM_OGL 5
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#endif /* def OGL */
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#define SM(w,h) ((((u_int32_t)w)<<16)+(((u_int32_t)h)&0xFFFF))
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#define SM_W(m) (m>>16)
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#define SM_H(m) (m&0xFFFF)
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#define SM_ORIGINAL 0
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#define BM_FLAG_TRANSPARENT 1
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#define BM_FLAG_SUPER_TRANSPARENT 2
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#define BM_FLAG_NO_LIGHTING 4
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#define BM_FLAG_RLE 8 // A run-length encoded bitmap.
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#define BM_FLAG_PAGED_OUT 16 // This bitmap's data is paged out.
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#define BM_FLAG_RLE_BIG 32 // for bitmaps that RLE to > 255 per row (i.e. cockpits)
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struct grs_bitmap
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{
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short bm_x,bm_y; // Offset from parent's origin
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short bm_w,bm_h; // width,height
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sbyte bm_type; // 0=Linear, 1=ModeX, 2=SVGA
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sbyte bm_flags; // bit 0 on means it has transparency.
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// bit 1 on means it has supertransparency
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// bit 2 on means it doesn't get passed through lighting.
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short bm_rowsize; // unsigned char offset to next row
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unsigned char * bm_data; // ptr to pixel data...
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// Linear = *parent+(rowsize*y+x)
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// ModeX = *parent+(rowsize*y+x/4)
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// SVGA = *parent+(rowsize*y+x)
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unsigned short bm_handle; //for application. initialized to 0
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ubyte avg_color; // Average color of all pixels in texture map.
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fix avg_color_rgb[3]; // same as above but real rgb value to be used to textured objects that should emit light
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struct grs_bitmap *bm_parent;
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#ifdef OGL
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struct ogl_texture *gltexture;
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#endif /* def OGL */
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};
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//font structure
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struct grs_font
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{
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short ft_w; // Width in pixels
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short ft_h; // Height in pixels
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short ft_flags; // Proportional?
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short ft_baseline; //
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ubyte ft_minchar; // First char defined by this font
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ubyte ft_maxchar; // Last char defined by this font
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short ft_bytewidth; // Width in unsigned chars
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ubyte * ft_data; // Ptr to raw data.
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ubyte ** ft_chars; // Ptrs to data for each char (required for prop font)
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short * ft_widths; // Array of widths (required for prop font)
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ubyte * ft_kerndata; // Array of kerning triplet data
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#ifdef OGL
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// These fields do not participate in disk i/o!
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grs_bitmap *ft_bitmaps;
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grs_bitmap ft_parent_bitmap;
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#endif /* def OGL */
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};
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#define GRS_FONT_SIZE 28 // how much space it takes up on disk
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struct grs_canvas
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{
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grs_bitmap cv_bitmap; // the bitmap for this canvas
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short cv_color; // current color
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int cv_fade_level; // transparency level
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ubyte cv_blend_func; // blending function to use
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short cv_drawmode; // fill,XOR,etc.
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grs_font * cv_font; // the currently selected font
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short cv_font_fg_color; // current font foreground color (-1==Invisible)
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short cv_font_bg_color; // current font background color (-1==Invisible)
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};
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struct grs_screen
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{ // This is a video screen
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grs_canvas sc_canvas; // Represents the entire screen
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u_int32_t sc_mode; // Video mode number
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unsigned short sc_w, sc_h; // Actual Width and Height
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fix sc_aspect; //aspect ratio (w/h) for this screen
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};
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//=========================================================================
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// System functions:
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// setup and set mode. this creates a grs_screen structure and sets
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// grd_curscreen to point to it. grs_curcanv points to this screen's
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// canvas. Saves the current VGA state and screen mode.
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#ifdef __cplusplus
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int gr_init(int mode);
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int gr_list_modes( u_int32_t gsmodes[] );
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int gr_check_mode(u_int32_t mode);
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int gr_set_mode(u_int32_t mode);
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void gr_set_attributes(void);
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//shut down the 2d. Restore the screen mode.
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void gr_close(void);
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//=========================================================================
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// Canvas functions:
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// Makes a new canvas. allocates memory for the canvas and its bitmap,
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// including the raw pixel buffer.
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grs_canvas *gr_create_canvas(int w, int h);
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// Creates a canvas that is part of another canvas. this can be used to make
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// a window on the screen. the canvas structure is malloc'd; the address of
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// the raw pixel data is inherited from the parent canvas.
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grs_canvas *gr_create_sub_canvas(grs_canvas *canv,int x,int y,int w, int h);
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// Initialize the specified canvas. the raw pixel data buffer is passed as
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// a parameter. no memory allocation is performed.
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void gr_init_canvas(grs_canvas *canv,unsigned char *pixdata,int pixtype, int w,int h);
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// Initialize the specified sub canvas. no memory allocation is performed.
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void gr_init_sub_canvas(grs_canvas *,grs_canvas *src,int x,int y,int w, int h);
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// Free up the canvas and its pixel data.
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void gr_free_canvas(grs_canvas *canv);
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// Free up the canvas. do not free the pixel data, which belongs to the
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// parent canvas.
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void gr_free_sub_canvas(grs_canvas *canv);
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// Clear the current canvas to the specified color
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void gr_clear_canvas(int color);
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//=========================================================================
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// Bitmap functions:
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// these are the two workhorses, the others just use these
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extern void gr_init_bitmap( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline, unsigned char * data );
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extern void gr_init_sub_bitmap (grs_bitmap *bm, grs_bitmap *bmParent, int x, int y, int w, int h );
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extern void gr_init_bitmap_alloc( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline);
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// Allocate a bitmap and its pixel data buffer.
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grs_bitmap *gr_create_bitmap(int w,int h);
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// Allocated a bitmap and makes its data be raw_data that is already somewhere.
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grs_bitmap *gr_create_bitmap_raw(int w, int h, unsigned char * raw_data );
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// Creates a bitmap which is part of another bitmap
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grs_bitmap *gr_create_sub_bitmap(grs_bitmap *bm,int x,int y,int w, int h);
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// Free the bitmap and its pixel data
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void gr_free_bitmap(grs_bitmap *bm);
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// Free the bitmap's data
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void gr_free_bitmap_data (grs_bitmap *bm);
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void gr_init_bitmap_data (grs_bitmap *bm);
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// Free the bitmap, but not the pixel data buffer
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void gr_free_sub_bitmap(grs_bitmap *bm);
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void gr_bm_pixel( grs_bitmap * bm, int x, int y, unsigned char color );
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void gr_bm_bitblt(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
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void gr_bm_ubitblt( int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
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void gr_bm_ubitbltm(int w, int h, int dx, int dy, int sx, int sy, grs_bitmap * src, grs_bitmap * dest);
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void gr_set_bitmap_flags(grs_bitmap *pbm, int flags);
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void gr_set_transparent(grs_bitmap *pbm, int bTransparent);
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void gr_set_super_transparent(grs_bitmap *pbm, int bTransparent);
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void gr_set_bitmap_data(grs_bitmap *bm, unsigned char *data);
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//=========================================================================
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// Color functions:
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// When this function is called, the guns are set to gr_palette, and
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// the palette stays the same until gr_close is called
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void gr_use_palette_table(const char * filename );
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//=========================================================================
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// Drawing functions:
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// Sets the color in the current canvas.
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void gr_setcolor(int color);
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// Sets transparency and blending function
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void gr_settransblend(int fade_level, ubyte blend_func);
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// Draws a point into the current canvas in the current color and drawmode.
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void gr_pixel(int x,int y);
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void gr_upixel(int x,int y);
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// Gets a pixel;
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unsigned char gr_gpixel( grs_bitmap * bitmap, int x, int y );
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unsigned char gr_ugpixel( grs_bitmap * bitmap, int x, int y );
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// Draws a line into the current canvas in the current color and drawmode.
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int gr_line(fix x0,fix y0,fix x1,fix y1);
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int gr_uline(fix x0,fix y0,fix x1,fix y1);
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// Draw the bitmap into the current canvas at the specified location.
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void gr_bitmap(int x,int y,grs_bitmap *bm);
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void gr_ubitmap(int x,int y,grs_bitmap *bm);
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void show_fullscr(grs_bitmap *bm);
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// Find transparent area in bitmap
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void gr_bitblt_find_transparent_area(grs_bitmap *bm, int *minx, int *miny, int *maxx, int *maxy);
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// bitmap function with transparency
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void gr_bitmapm( int x, int y, grs_bitmap *bm );
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void gr_ubitmapm( int x, int y, grs_bitmap *bm );
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// Draw a rectangle into the current canvas.
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void gr_rect(int left,int top,int right,int bot);
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void gr_urect(int left,int top,int right,int bot);
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// Draw a filled circle
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int gr_disk(fix x,fix y,fix r);
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// Draw an outline circle
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int gr_circle(fix x,fix y,fix r);
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int gr_ucircle(fix x,fix y,fix r);
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// Draw an unfilled rectangle into the current canvas
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void gr_box(int left,int top,int right,int bot);
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void gr_ubox(int left,int top,int right,int bot);
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void gr_scanline( int x1, int x2, int y );
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void gr_uscanline( int x1, int x2, int y );
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// Reads in a font file... current font set to this one.
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grs_font * gr_init_font( const char * fontfile );
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void gr_close_font( grs_font * font );
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#if defined(DXX_BUILD_DESCENT_I)
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#define DXX_SDL_WINDOW_CAPTION "Descent"
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#define DXX_SDL_WINDOW_ICON_BITMAP "d1x-rebirth.bmp"
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static inline void gr_remap_color_fonts() {}
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static inline void gr_remap_mono_fonts() {}
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#elif defined(DXX_BUILD_DESCENT_II)
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#define DXX_SDL_WINDOW_CAPTION "Descent II"
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#define DXX_SDL_WINDOW_ICON_BITMAP "d2x-rebirth.bmp"
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void gr_copy_palette(palette_array_t &gr_palette, const palette_array_t &pal);
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//remap (by re-reading) all the color fonts
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void gr_remap_color_fonts();
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void gr_remap_mono_fonts();
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#endif
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// Writes a string using current font. Returns the next column after last char.
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void gr_set_curfont( grs_font * );
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void gr_set_fontcolor( int fg_color, int bg_color );
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void gr_string(int x, int y, const char *s );
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void gr_ustring(int x, int y, const char *s );
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void gr_printf( int x, int y, const char * format, ... ) __attribute_format_printf(3, 4);
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#define gr_printf(A1,A2,F,...) dxx_call_printf_checked(gr_printf,gr_string,(A1,A2),(F),##__VA_ARGS__)
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void gr_uprintf( int x, int y, const char * format, ... ) __attribute_format_printf(3, 4);
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#define gr_uprintf(A1,A2,F,...) dxx_call_printf_checked(gr_uprintf,gr_ustring,(A1,A2),(F),##__VA_ARGS__)
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void gr_get_string_size(const char *s, int *string_width, int *string_height, int *average_width );
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// From scale.c
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void scale_bitmap(grs_bitmap *bp, grs_point *vertbuf, int orientation );
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//===========================================================================
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// Global variables
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extern grs_canvas *grd_curcanv; //active canvas
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extern grs_screen *grd_curscreen; //active screen
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extern void gr_set_current_canvas( grs_canvas *canv );
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//flags for fonts
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#define FT_COLOR 1
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#define FT_PROPORTIONAL 2
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#define FT_KERNED 4
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extern palette_array_t gr_palette;
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extern ubyte gr_fade_table[256*GR_FADE_LEVELS];
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extern ubyte gr_inverse_table[32*32*32];
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extern ushort gr_palette_selector;
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extern ushort gr_inverse_table_selector;
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extern ushort gr_fade_table_selector;
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// Remaps a bitmap into the current palette. If transparent_color is
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// between 0 and 255 then all occurances of that color are mapped to
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// whatever color the 2d uses for transparency. This is normally used
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// right after a call to iff_read_bitmap like this:
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// iff_error = iff_read_bitmap(filename,new,BM_LINEAR,newpal);
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// if (iff_error != IFF_NO_ERROR) Error("Can't load IFF file <%s>, error=%d",filename,iff_error);
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// if ( iff_has_transparency )
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// gr_remap_bitmap( new, newpal, iff_transparent_color );
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// else
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// gr_remap_bitmap( new, newpal, -1 );
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void gr_remap_bitmap( grs_bitmap * bmp, palette_array_t &palette, int transparent_color, int super_transparent_color );
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// Same as above, but searches using gr_find_closest_color which uses
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// 18-bit accurracy instead of 15bit when translating colors.
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void gr_remap_bitmap_good( grs_bitmap * bmp, palette_array_t &palette, int transparent_color, int super_transparent_color );
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void gr_palette_step_up( int r, int g, int b );
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extern void gr_bitmap_check_transparency( grs_bitmap * bmp );
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#define BM_RGB(r,g,b) ( (((r)&31)<<10) | (((g)&31)<<5) | ((b)&31) )
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#define BM_XRGB(r,g,b) gr_find_closest_color( (r)*2,(g)*2,(b)*2 )
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// Given: r,g,b, each in range of 0-63, return the color index that
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// best matches the input.
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int gr_find_closest_color( int r, int g, int b );
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int gr_find_closest_color_15bpp( int rgb );
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extern void gr_flip(void);
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extern void gr_set_draw_buffer(int buf);
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/*
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* must return 0 if windowed, 1 if fullscreen
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*/
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int gr_check_fullscreen(void);
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/*
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* returns state after toggling (ie, same as if you had called
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* check_fullscreen immediatly after)
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*/
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int gr_toggle_fullscreen(void);
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void ogl_do_palfx(void);
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void ogl_init_pixel_buffers(unsigned w, unsigned h);
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void ogl_close_pixel_buffers(void);
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void ogl_cache_polymodel_textures(int model_num);;
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#endif
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#endif /* def _GR_H */
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