mirror of
https://git.code.sf.net/p/quake/quake2forge
synced 2024-11-14 08:50:56 +00:00
413 lines
8.3 KiB
C
413 lines
8.3 KiB
C
/*
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Copyright (C) 1997-2001 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 the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// draw.c
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#include "gl_local.h"
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image_t *draw_chars;
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extern qboolean scrap_dirty;
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void Scrap_Upload (void);
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/*
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===============
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Draw_InitLocal
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===============
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*/
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void Draw_InitLocal (void)
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{
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// load console characters (don't bilerp characters)
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draw_chars = GL_FindImage ("pics/conchars.pcx", it_pic);
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GL_Bind( draw_chars->texnum );
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qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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}
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/*
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================
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Draw_Char
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Draws one 8*8 graphics character with 0 being transparent.
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It can be clipped to the top of the screen to allow the console to be
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smoothly scrolled off.
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================
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*/
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void Draw_Char (int x, int y, int num)
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{
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int row, col;
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float frow, fcol, size;
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num &= 255;
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if ( (num&127) == 32 )
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return; // space
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if (y <= -8)
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return; // totally off screen
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row = num>>4;
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col = num&15;
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frow = row*0.0625;
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fcol = col*0.0625;
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size = 0.0625;
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GL_Bind (draw_chars->texnum);
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qglBegin (GL_QUADS);
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qglTexCoord2f (fcol, frow);
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qglVertex2f (x, y);
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qglTexCoord2f (fcol + size, frow);
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qglVertex2f (x+8, y);
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qglTexCoord2f (fcol + size, frow + size);
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qglVertex2f (x+8, y+8);
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qglTexCoord2f (fcol, frow + size);
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qglVertex2f (x, y+8);
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qglEnd ();
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}
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/*
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=============
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Draw_FindPic
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=============
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*/
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image_t *Draw_FindPic (char *name)
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{
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image_t *gl;
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char fullname[MAX_QPATH];
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if (name[0] != '/' && name[0] != '\\')
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{
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Com_sprintf (fullname, sizeof(fullname), "pics/%s.pcx", name);
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gl = GL_FindImage (fullname, it_pic);
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}
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else
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gl = GL_FindImage (name+1, it_pic);
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return gl;
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}
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/*
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=============
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Draw_GetPicSize
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=============
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*/
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void Draw_GetPicSize (int *w, int *h, char *pic)
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{
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image_t *gl;
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gl = Draw_FindPic (pic);
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if (!gl)
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{
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*w = *h = -1;
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return;
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}
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*w = gl->width;
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*h = gl->height;
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}
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/*
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=============
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Draw_StretchPic
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=============
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*/
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void Draw_StretchPic (int x, int y, int w, int h, char *pic)
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{
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image_t *gl;
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gl = Draw_FindPic (pic);
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if (!gl)
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{
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ri.Con_Printf (PRINT_ALL, "Can't find pic: %s\n", pic);
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return;
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}
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if (scrap_dirty)
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Scrap_Upload ();
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if ( ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) ) && !gl->has_alpha)
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qglDisable (GL_ALPHA_TEST);
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GL_Bind (gl->texnum);
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qglBegin (GL_QUADS);
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qglTexCoord2f (gl->sl, gl->tl);
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qglVertex2f (x, y);
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qglTexCoord2f (gl->sh, gl->tl);
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qglVertex2f (x+w, y);
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qglTexCoord2f (gl->sh, gl->th);
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qglVertex2f (x+w, y+h);
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qglTexCoord2f (gl->sl, gl->th);
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qglVertex2f (x, y+h);
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qglEnd ();
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if ( ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) ) && !gl->has_alpha)
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qglEnable (GL_ALPHA_TEST);
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}
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/*
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=============
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Draw_Pic
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=============
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*/
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void Draw_Pic (int x, int y, char *pic)
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{
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image_t *gl;
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gl = Draw_FindPic (pic);
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if (!gl)
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{
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ri.Con_Printf (PRINT_ALL, "Can't find pic: %s\n", pic);
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return;
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}
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if (scrap_dirty)
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Scrap_Upload ();
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if ( ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) ) && !gl->has_alpha)
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qglDisable (GL_ALPHA_TEST);
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GL_Bind (gl->texnum);
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qglBegin (GL_QUADS);
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qglTexCoord2f (gl->sl, gl->tl);
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qglVertex2f (x, y);
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qglTexCoord2f (gl->sh, gl->tl);
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qglVertex2f (x+gl->width, y);
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qglTexCoord2f (gl->sh, gl->th);
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qglVertex2f (x+gl->width, y+gl->height);
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qglTexCoord2f (gl->sl, gl->th);
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qglVertex2f (x, y+gl->height);
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qglEnd ();
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if ( ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) ) && !gl->has_alpha)
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qglEnable (GL_ALPHA_TEST);
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}
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/*
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=============
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Draw_TileClear
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This repeats a 64*64 tile graphic to fill the screen around a sized down
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refresh window.
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=============
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*/
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void Draw_TileClear (int x, int y, int w, int h, char *pic)
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{
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image_t *image;
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image = Draw_FindPic (pic);
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if (!image)
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{
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ri.Con_Printf (PRINT_ALL, "Can't find pic: %s\n", pic);
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return;
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}
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if ( ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) ) && !image->has_alpha)
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qglDisable (GL_ALPHA_TEST);
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GL_Bind (image->texnum);
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qglBegin (GL_QUADS);
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qglTexCoord2f (x/64.0, y/64.0);
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qglVertex2f (x, y);
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qglTexCoord2f ( (x+w)/64.0, y/64.0);
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qglVertex2f (x+w, y);
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qglTexCoord2f ( (x+w)/64.0, (y+h)/64.0);
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qglVertex2f (x+w, y+h);
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qglTexCoord2f ( x/64.0, (y+h)/64.0 );
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qglVertex2f (x, y+h);
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qglEnd ();
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if ( ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) ) && !image->has_alpha)
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qglEnable (GL_ALPHA_TEST);
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}
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/*
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=============
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Draw_Fill
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Fills a box of pixels with a single color
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=============
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*/
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void Draw_Fill (int x, int y, int w, int h, int c)
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{
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union
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{
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unsigned c;
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byte v[4];
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} color;
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if ( (unsigned)c > 255)
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ri.Sys_Error (ERR_FATAL, "Draw_Fill: bad color");
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qglDisable (GL_TEXTURE_2D);
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color.c = d_8to24table[c];
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qglColor3ubv (color.v);
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qglBegin (GL_QUADS);
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qglVertex2f (x,y);
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qglVertex2f (x+w, y);
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qglVertex2f (x+w, y+h);
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qglVertex2f (x, y+h);
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qglEnd ();
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qglColor3ubv (color_white);
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qglEnable (GL_TEXTURE_2D);
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}
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//=============================================================================
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/*
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================
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Draw_FadeScreen
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================
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*/
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void Draw_FadeScreen (void)
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{
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qglEnable (GL_BLEND);
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qglDisable (GL_TEXTURE_2D);
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qglColor4f (0, 0, 0, 0.8);
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qglBegin (GL_QUADS);
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qglVertex2f (0,0);
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qglVertex2f (vid.width, 0);
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qglVertex2f (vid.width, vid.height);
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qglVertex2f (0, vid.height);
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qglEnd ();
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qglColor4ubv (color_white);
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qglEnable (GL_TEXTURE_2D);
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qglDisable (GL_BLEND);
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}
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//====================================================================
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/*
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=============
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Draw_StretchRaw
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=============
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*/
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extern unsigned r_rawpalette[256];
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void Draw_StretchRaw (int x, int y, int w, int h, int cols, int rows, byte *data)
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{
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unsigned image32[256*256];
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unsigned char image8[256*256];
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int i, j, trows;
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byte *source;
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int frac, fracstep;
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float hscale;
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int row;
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float t;
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GL_Bind (0);
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if (rows<=256)
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{
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hscale = 1;
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trows = rows;
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}
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else
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{
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hscale = rows/256.0;
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trows = 256;
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}
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t = rows*hscale / 256 - 1.0/512.0;
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if ( !qglColorTableEXT )
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{
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unsigned *dest;
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for (i=0 ; i<trows ; i++)
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{
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row = (int)(i*hscale);
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if (row > rows)
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break;
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source = data + cols*row;
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dest = &image32[i*256];
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fracstep = cols*0x10000/256;
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frac = fracstep >> 1;
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for (j=0 ; j<256 ; j++)
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{
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dest[j] = r_rawpalette[source[frac>>16]];
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frac += fracstep;
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}
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}
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qglTexImage2D (GL_TEXTURE_2D, 0, gl_tex_solid_format, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, image32);
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}
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else
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{
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unsigned char *dest;
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for (i=0 ; i<trows ; i++)
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{
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row = (int)(i*hscale);
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if (row > rows)
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break;
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source = data + cols*row;
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dest = &image8[i*256];
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fracstep = cols*0x10000/256;
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frac = fracstep >> 1;
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for (j=0 ; j<256 ; j++)
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{
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dest[j] = source[frac>>16];
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frac += fracstep;
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}
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}
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qglTexImage2D( GL_TEXTURE_2D,
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0,
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GL_COLOR_INDEX8_EXT,
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256, 256,
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0,
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GL_COLOR_INDEX,
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GL_UNSIGNED_BYTE,
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image8 );
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}
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qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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if ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) )
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qglDisable (GL_ALPHA_TEST);
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qglBegin (GL_QUADS);
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qglTexCoord2f (1.0/512.0, 1.0/512.0);
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qglVertex2f (x, y);
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qglTexCoord2f (511.0/512.0, 1.0/512.0);
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qglVertex2f (x+w, y);
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qglTexCoord2f (511.0/512.0, t);
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qglVertex2f (x+w, y+h);
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qglTexCoord2f (1.0/512.0, t);
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qglVertex2f (x, y+h);
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qglEnd ();
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if ( ( gl_config.renderer == GL_RENDERER_MCD ) || ( gl_config.renderer & GL_RENDERER_RENDITION ) )
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qglEnable (GL_ALPHA_TEST);
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}
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