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https://git.code.sf.net/p/quake/quakeforge
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630dde6df7
The software renderer uses Bresenham's line slice algorithm as presented by Michael Abrash in his Graphics Programming Black Book Special Edition with the serial numbers filed off (as such, more just so *I* can read the code easily), along with the Chen-Sutherland line clipping algorithm. The other renderers were more or less trivial in comparison.
64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
/*
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qf_draw.h
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gl specific draw function
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef __gl_draw_h
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#define __gl_draw_h
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struct qpic_s;
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void gl_Draw_Init (void);
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void gl_Draw_Shutdown (void);
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void gl_Draw_Character (int x, int y, unsigned ch);
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void gl_Draw_String (int x, int y, const char *str);
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void gl_Draw_nString (int x, int y, const char *str, int count);
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void gl_Draw_AltString (int x, int y, const char *str);
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void gl_Draw_ConsoleBackground (int lines, byte alpha);
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void gl_Draw_Crosshair (void);
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void gl_Draw_CrosshairAt (int ch, int x, int y);
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void gl_Draw_TileClear (int x, int y, int w, int h);
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void gl_Draw_Fill (int x, int y, int w, int h, int c);
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void gl_Draw_Line (int x0, int y0, int x1, int y1, int c);
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void gl_Draw_TextBox (int x, int y, int width, int lines, byte alpha);
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void gl_Draw_FadeScreen (void);
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void gl_Draw_BlendScreen (quat_t color);
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struct qpic_s *gl_Draw_CachePic (const char *path, qboolean alpha);
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void gl_Draw_UncachePic (const char *path);
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struct qpic_s *gl_Draw_MakePic (int width, int height, const byte *data);
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void gl_Draw_DestroyPic (struct qpic_s *pic);
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struct qpic_s *gl_Draw_PicFromWad (const char *name);
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void gl_Draw_Pic (int x, int y, struct qpic_s *pic);
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void gl_Draw_Picf (float x, float y, struct qpic_s *pic);
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void gl_Draw_SubPic(int x, int y, struct qpic_s *pic,
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int srcx, int srcy, int width, int height);
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void GL_Set2D (void);
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void GL_Set2DScaled (void);
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void GL_End2D (void);
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void GL_DrawReset (void);
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void GL_FlushText (void);
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#endif//__gl_draw_h
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