forked from KolibriOS/kolibrios
1298 lines
27 KiB
C
1298 lines
27 KiB
C
/*
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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 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 -- this is the only file outside the refresh that touches the
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// vid buffer
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#include "quakedef.h"
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#define GL_COLOR_INDEX8_EXT 0x80E5
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extern unsigned char d_15to8table[65536];
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cvar_t gl_nobind = {"gl_nobind", "0"};
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cvar_t gl_max_size = {"gl_max_size", "1024"};
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cvar_t gl_picmip = {"gl_picmip", "0"};
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byte *draw_chars; // 8*8 graphic characters
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qpic_t *draw_disc;
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qpic_t *draw_backtile;
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int translate_texture;
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int char_texture;
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typedef struct
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{
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int texnum;
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float sl, tl, sh, th;
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} glpic_t;
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byte conback_buffer[sizeof(qpic_t) + sizeof(glpic_t)];
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qpic_t *conback = (qpic_t *)&conback_buffer;
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int gl_lightmap_format = 4;
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int gl_solid_format = 3;
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int gl_alpha_format = 4;
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int gl_filter_min = GL_LINEAR_MIPMAP_NEAREST;
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int gl_filter_max = GL_LINEAR;
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int texels;
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typedef struct
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{
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int texnum;
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char identifier[64];
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int width, height;
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qboolean mipmap;
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} gltexture_t;
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#define MAX_GLTEXTURES 1024
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gltexture_t gltextures[MAX_GLTEXTURES];
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int numgltextures;
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void GL_Bind (int texnum)
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{
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if (gl_nobind.value)
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texnum = char_texture;
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if (currenttexture == texnum)
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return;
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currenttexture = texnum;
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#ifdef _WIN32
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bindTexFunc (GL_TEXTURE_2D, texnum);
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#else
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glBindTexture(GL_TEXTURE_2D, texnum);
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#endif
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}
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/*
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=============================================================================
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scrap allocation
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Allocate all the little status bar obejcts into a single texture
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to crutch up stupid hardware / drivers
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=============================================================================
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*/
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#define MAX_SCRAPS 2
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#define BLOCK_WIDTH 256
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#define BLOCK_HEIGHT 256
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int scrap_allocated[MAX_SCRAPS][BLOCK_WIDTH];
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byte scrap_texels[MAX_SCRAPS][BLOCK_WIDTH*BLOCK_HEIGHT*4];
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qboolean scrap_dirty;
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int scrap_texnum;
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// returns a texture number and the position inside it
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int Scrap_AllocBlock (int w, int h, int *x, int *y)
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{
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int i, j;
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int best, best2;
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int bestx;
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int texnum;
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for (texnum=0 ; texnum<MAX_SCRAPS ; texnum++)
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{
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best = BLOCK_HEIGHT;
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for (i=0 ; i<BLOCK_WIDTH-w ; i++)
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{
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best2 = 0;
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for (j=0 ; j<w ; j++)
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{
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if (scrap_allocated[texnum][i+j] >= best)
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break;
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if (scrap_allocated[texnum][i+j] > best2)
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best2 = scrap_allocated[texnum][i+j];
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}
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if (j == w)
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{ // this is a valid spot
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*x = i;
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*y = best = best2;
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}
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}
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if (best + h > BLOCK_HEIGHT)
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continue;
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for (i=0 ; i<w ; i++)
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scrap_allocated[texnum][*x + i] = best + h;
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return texnum;
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}
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Sys_Error ("Scrap_AllocBlock: full");
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}
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int scrap_uploads;
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void Scrap_Upload (void)
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{
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int texnum;
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scrap_uploads++;
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for (texnum=0 ; texnum<MAX_SCRAPS ; texnum++) {
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GL_Bind(scrap_texnum + texnum);
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GL_Upload8 (scrap_texels[texnum], BLOCK_WIDTH, BLOCK_HEIGHT, false, true);
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}
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scrap_dirty = false;
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}
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//=============================================================================
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/* Support Routines */
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typedef struct cachepic_s
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{
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char name[MAX_QPATH];
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qpic_t pic;
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byte padding[32]; // for appended glpic
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} cachepic_t;
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#define MAX_CACHED_PICS 128
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cachepic_t menu_cachepics[MAX_CACHED_PICS];
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int menu_numcachepics;
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byte menuplyr_pixels[4096];
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int pic_texels;
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int pic_count;
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qpic_t *Draw_PicFromWad (char *name)
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{
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qpic_t *p;
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glpic_t *gl;
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p = W_GetLumpName (name);
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gl = (glpic_t *)p->data;
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// load little ones into the scrap
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if (p->width < 64 && p->height < 64)
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{
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int x, y;
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int i, j, k;
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int texnum;
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texnum = Scrap_AllocBlock (p->width, p->height, &x, &y);
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scrap_dirty = true;
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k = 0;
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for (i=0 ; i<p->height ; i++)
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for (j=0 ; j<p->width ; j++, k++)
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scrap_texels[texnum][(y+i)*BLOCK_WIDTH + x + j] = p->data[k];
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texnum += scrap_texnum;
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gl->texnum = texnum;
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gl->sl = (x+0.01)/(float)BLOCK_WIDTH;
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gl->sh = (x+p->width-0.01)/(float)BLOCK_WIDTH;
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gl->tl = (y+0.01)/(float)BLOCK_WIDTH;
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gl->th = (y+p->height-0.01)/(float)BLOCK_WIDTH;
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pic_count++;
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pic_texels += p->width*p->height;
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}
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else
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{
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gl->texnum = GL_LoadPicTexture (p);
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gl->sl = 0;
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gl->sh = 1;
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gl->tl = 0;
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gl->th = 1;
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}
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return p;
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}
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/*
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================
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Draw_CachePic
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================
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*/
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qpic_t *Draw_CachePic (char *path)
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{
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cachepic_t *pic;
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int i;
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qpic_t *dat;
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glpic_t *gl;
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for (pic=menu_cachepics, i=0 ; i<menu_numcachepics ; pic++, i++)
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if (!strcmp (path, pic->name))
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return &pic->pic;
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if (menu_numcachepics == MAX_CACHED_PICS)
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Sys_Error ("menu_numcachepics == MAX_CACHED_PICS");
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menu_numcachepics++;
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strcpy (pic->name, path);
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//
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// load the pic from disk
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//
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dat = (qpic_t *)COM_LoadTempFile (path);
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if (!dat)
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Sys_Error ("Draw_CachePic: failed to load %s", path);
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SwapPic (dat);
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// HACK HACK HACK --- we need to keep the bytes for
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// the translatable player picture just for the menu
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// configuration dialog
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if (!strcmp (path, "gfx/menuplyr.lmp"))
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memcpy (menuplyr_pixels, dat->data, dat->width*dat->height);
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pic->pic.width = dat->width;
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pic->pic.height = dat->height;
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gl = (glpic_t *)pic->pic.data;
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gl->texnum = GL_LoadPicTexture (dat);
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gl->sl = 0;
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gl->sh = 1;
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gl->tl = 0;
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gl->th = 1;
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return &pic->pic;
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}
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void Draw_CharToConback (int num, byte *dest)
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{
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int row, col;
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byte *source;
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int drawline;
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int x;
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row = num>>4;
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col = num&15;
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source = draw_chars + (row<<10) + (col<<3);
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drawline = 8;
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while (drawline--)
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{
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for (x=0 ; x<8 ; x++)
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if (source[x] != 255)
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dest[x] = 0x60 + source[x];
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source += 128;
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dest += 320;
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}
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}
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typedef struct
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{
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char *name;
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int minimize, maximize;
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} glmode_t;
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glmode_t modes[] = {
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{"GL_NEAREST", GL_NEAREST, GL_NEAREST},
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{"GL_LINEAR", GL_LINEAR, GL_LINEAR},
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{"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST},
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{"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR},
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{"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST},
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{"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR}
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};
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/*
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===============
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Draw_TextureMode_f
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===============
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*/
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void Draw_TextureMode_f (void)
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{
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int i;
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gltexture_t *glt;
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if (Cmd_Argc() == 1)
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{
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for (i=0 ; i< 6 ; i++)
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if (gl_filter_min == modes[i].minimize)
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{
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Con_Printf ("%s\n", modes[i].name);
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return;
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}
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Con_Printf ("current filter is unknown???\n");
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return;
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}
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for (i=0 ; i< 6 ; i++)
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{
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if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) )
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break;
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}
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if (i == 6)
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{
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Con_Printf ("bad filter name\n");
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return;
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}
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gl_filter_min = modes[i].minimize;
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gl_filter_max = modes[i].maximize;
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// change all the existing mipmap texture objects
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for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
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{
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if (glt->mipmap)
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{
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GL_Bind (glt->texnum);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
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}
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}
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}
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/*
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===============
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Draw_Init
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===============
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*/
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void Draw_Init (void)
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{
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int i;
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qpic_t *cb;
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byte *dest, *src;
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int x, y;
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char ver[40];
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glpic_t *gl;
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int start;
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byte *ncdata;
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int f, fstep;
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Cvar_RegisterVariable (&gl_nobind);
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Cvar_RegisterVariable (&gl_max_size);
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Cvar_RegisterVariable (&gl_picmip);
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// 3dfx can only handle 256 wide textures
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if (!Q_strncasecmp ((char *)gl_renderer, "3dfx",4) ||
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strstr((char *)gl_renderer, "Glide"))
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Cvar_Set ("gl_max_size", "256");
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Cmd_AddCommand ("gl_texturemode", &Draw_TextureMode_f);
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// load the console background and the charset
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// by hand, because we need to write the version
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// string into the background before turning
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// it into a texture
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draw_chars = W_GetLumpName ("conchars");
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for (i=0 ; i<256*64 ; i++)
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if (draw_chars[i] == 0)
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draw_chars[i] = 255; // proper transparent color
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// now turn them into textures
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char_texture = GL_LoadTexture ("charset", 128, 128, draw_chars, false, true);
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start = Hunk_LowMark();
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cb = (qpic_t *)COM_LoadTempFile ("gfx/conback.lmp");
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if (!cb)
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Sys_Error ("Couldn't load gfx/conback.lmp");
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SwapPic (cb);
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// hack the version number directly into the pic
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#if defined(__linux__)
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sprintf (ver, "(Linux %2.2f, gl %4.2f) %4.2f", (float)LINUX_VERSION, (float)GLQUAKE_VERSION, (float)VERSION);
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#else
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sprintf (ver, "(gl %4.2f) %4.2f", (float)GLQUAKE_VERSION, (float)VERSION);
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#endif
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dest = cb->data + 320*186 + 320 - 11 - 8*strlen(ver);
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y = strlen(ver);
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for (x=0 ; x<y ; x++)
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Draw_CharToConback (ver[x], dest+(x<<3));
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#if 0
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conback->width = vid.conwidth;
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conback->height = vid.conheight;
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// scale console to vid size
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dest = ncdata = Hunk_AllocName(vid.conwidth * vid.conheight, "conback");
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for (y=0 ; y<vid.conheight ; y++, dest += vid.conwidth)
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{
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src = cb->data + cb->width * (y*cb->height/vid.conheight);
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if (vid.conwidth == cb->width)
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memcpy (dest, src, vid.conwidth);
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else
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{
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f = 0;
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fstep = cb->width*0x10000/vid.conwidth;
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for (x=0 ; x<vid.conwidth ; x+=4)
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{
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dest[x] = src[f>>16];
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f += fstep;
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dest[x+1] = src[f>>16];
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f += fstep;
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dest[x+2] = src[f>>16];
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f += fstep;
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dest[x+3] = src[f>>16];
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f += fstep;
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}
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}
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}
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#else
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conback->width = cb->width;
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conback->height = cb->height;
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ncdata = cb->data;
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#endif
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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gl = (glpic_t *)conback->data;
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gl->texnum = GL_LoadTexture ("conback", conback->width, conback->height, ncdata, false, false);
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gl->sl = 0;
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gl->sh = 1;
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gl->tl = 0;
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gl->th = 1;
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conback->width = vid.width;
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conback->height = vid.height;
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// free loaded console
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Hunk_FreeToLowMark(start);
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// save a texture slot for translated picture
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translate_texture = texture_extension_number++;
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// save slots for scraps
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scrap_texnum = texture_extension_number;
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texture_extension_number += MAX_SCRAPS;
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//
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// get the other pics we need
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//
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draw_disc = Draw_PicFromWad ("disc");
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draw_backtile = Draw_PicFromWad ("backtile");
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}
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/*
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================
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Draw_Character
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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_Character (int x, int y, int num)
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{
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byte *dest;
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byte *source;
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unsigned short *pusdest;
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int drawline;
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int row, col;
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float frow, fcol, size;
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if (num == 32)
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return; // space
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num &= 255;
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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 (char_texture);
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glBegin (GL_QUADS);
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glTexCoord2f (fcol, frow);
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glVertex2f (x, y);
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glTexCoord2f (fcol + size, frow);
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glVertex2f (x+8, y);
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glTexCoord2f (fcol + size, frow + size);
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glVertex2f (x+8, y+8);
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glTexCoord2f (fcol, frow + size);
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glVertex2f (x, y+8);
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glEnd ();
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}
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/*
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================
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Draw_String
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================
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*/
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void Draw_String (int x, int y, char *str)
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{
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while (*str)
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{
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Draw_Character (x, y, *str);
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str++;
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x += 8;
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}
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}
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|
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/*
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================
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Draw_DebugChar
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Draws a single character directly to the upper right corner of the screen.
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This is for debugging lockups by drawing different chars in different parts
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of the code.
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|
================
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*/
|
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void Draw_DebugChar (char num)
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{
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}
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|
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/*
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=============
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Draw_AlphaPic
|
|
=============
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|
*/
|
|
void Draw_AlphaPic (int x, int y, qpic_t *pic, float alpha)
|
|
{
|
|
byte *dest, *source;
|
|
unsigned short *pusdest;
|
|
int v, u;
|
|
glpic_t *gl;
|
|
|
|
if (scrap_dirty)
|
|
Scrap_Upload ();
|
|
gl = (glpic_t *)pic->data;
|
|
glDisable(GL_ALPHA_TEST);
|
|
glEnable (GL_BLEND);
|
|
// glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
// glCullFace(GL_FRONT);
|
|
glColor4f (1,1,1,alpha);
|
|
GL_Bind (gl->texnum);
|
|
glBegin (GL_QUADS);
|
|
glTexCoord2f (gl->sl, gl->tl);
|
|
glVertex2f (x, y);
|
|
glTexCoord2f (gl->sh, gl->tl);
|
|
glVertex2f (x+pic->width, y);
|
|
glTexCoord2f (gl->sh, gl->th);
|
|
glVertex2f (x+pic->width, y+pic->height);
|
|
glTexCoord2f (gl->sl, gl->th);
|
|
glVertex2f (x, y+pic->height);
|
|
glEnd ();
|
|
glColor4f (1,1,1,1);
|
|
glEnable(GL_ALPHA_TEST);
|
|
glDisable (GL_BLEND);
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
Draw_Pic
|
|
=============
|
|
*/
|
|
void Draw_Pic (int x, int y, qpic_t *pic)
|
|
{
|
|
byte *dest, *source;
|
|
unsigned short *pusdest;
|
|
int v, u;
|
|
glpic_t *gl;
|
|
|
|
if (scrap_dirty)
|
|
Scrap_Upload ();
|
|
gl = (glpic_t *)pic->data;
|
|
glColor4f (1,1,1,1);
|
|
GL_Bind (gl->texnum);
|
|
glBegin (GL_QUADS);
|
|
glTexCoord2f (gl->sl, gl->tl);
|
|
glVertex2f (x, y);
|
|
glTexCoord2f (gl->sh, gl->tl);
|
|
glVertex2f (x+pic->width, y);
|
|
glTexCoord2f (gl->sh, gl->th);
|
|
glVertex2f (x+pic->width, y+pic->height);
|
|
glTexCoord2f (gl->sl, gl->th);
|
|
glVertex2f (x, y+pic->height);
|
|
glEnd ();
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
Draw_TransPic
|
|
=============
|
|
*/
|
|
void Draw_TransPic (int x, int y, qpic_t *pic)
|
|
{
|
|
byte *dest, *source, tbyte;
|
|
unsigned short *pusdest;
|
|
int v, u;
|
|
|
|
if (x < 0 || (unsigned)(x + pic->width) > vid.width || y < 0 ||
|
|
(unsigned)(y + pic->height) > vid.height)
|
|
{
|
|
Sys_Error ("Draw_TransPic: bad coordinates");
|
|
}
|
|
|
|
Draw_Pic (x, y, pic);
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
Draw_TransPicTranslate
|
|
|
|
Only used for the player color selection menu
|
|
=============
|
|
*/
|
|
void Draw_TransPicTranslate (int x, int y, qpic_t *pic, byte *translation)
|
|
{
|
|
int v, u, c;
|
|
unsigned trans[64*64], *dest;
|
|
byte *src;
|
|
int p;
|
|
|
|
GL_Bind (translate_texture);
|
|
|
|
c = pic->width * pic->height;
|
|
|
|
dest = trans;
|
|
for (v=0 ; v<64 ; v++, dest += 64)
|
|
{
|
|
src = &menuplyr_pixels[ ((v*pic->height)>>6) *pic->width];
|
|
for (u=0 ; u<64 ; u++)
|
|
{
|
|
p = src[(u*pic->width)>>6];
|
|
if (p == 255)
|
|
dest[u] = p;
|
|
else
|
|
dest[u] = d_8to24table[translation[p]];
|
|
}
|
|
}
|
|
|
|
glTexImage2D (GL_TEXTURE_2D, 0, gl_alpha_format, 64, 64, 0, GL_RGBA, GL_UNSIGNED_BYTE, trans);
|
|
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
|
|
glColor3f (1,1,1);
|
|
glBegin (GL_QUADS);
|
|
glTexCoord2f (0, 0);
|
|
glVertex2f (x, y);
|
|
glTexCoord2f (1, 0);
|
|
glVertex2f (x+pic->width, y);
|
|
glTexCoord2f (1, 1);
|
|
glVertex2f (x+pic->width, y+pic->height);
|
|
glTexCoord2f (0, 1);
|
|
glVertex2f (x, y+pic->height);
|
|
glEnd ();
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
Draw_ConsoleBackground
|
|
|
|
================
|
|
*/
|
|
void Draw_ConsoleBackground (int lines)
|
|
{
|
|
int y = (vid.height * 3) >> 2;
|
|
|
|
if (lines > y)
|
|
Draw_Pic(0, lines - vid.height, conback);
|
|
else
|
|
Draw_AlphaPic (0, lines - vid.height, conback, (float)(1.2 * lines)/y);
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
Draw_TileClear
|
|
|
|
This repeats a 64*64 tile graphic to fill the screen around a sized down
|
|
refresh window.
|
|
=============
|
|
*/
|
|
void Draw_TileClear (int x, int y, int w, int h)
|
|
{
|
|
glColor3f (1,1,1);
|
|
GL_Bind (*(int *)draw_backtile->data);
|
|
glBegin (GL_QUADS);
|
|
glTexCoord2f (x/64.0, y/64.0);
|
|
glVertex2f (x, y);
|
|
glTexCoord2f ( (x+w)/64.0, y/64.0);
|
|
glVertex2f (x+w, y);
|
|
glTexCoord2f ( (x+w)/64.0, (y+h)/64.0);
|
|
glVertex2f (x+w, y+h);
|
|
glTexCoord2f ( x/64.0, (y+h)/64.0 );
|
|
glVertex2f (x, y+h);
|
|
glEnd ();
|
|
}
|
|
|
|
|
|
/*
|
|
=============
|
|
Draw_Fill
|
|
|
|
Fills a box of pixels with a single color
|
|
=============
|
|
*/
|
|
void Draw_Fill (int x, int y, int w, int h, int c)
|
|
{
|
|
glDisable (GL_TEXTURE_2D);
|
|
glColor3f (host_basepal[c*3]/255.0,
|
|
host_basepal[c*3+1]/255.0,
|
|
host_basepal[c*3+2]/255.0);
|
|
|
|
glBegin (GL_QUADS);
|
|
|
|
glVertex2f (x,y);
|
|
glVertex2f (x+w, y);
|
|
glVertex2f (x+w, y+h);
|
|
glVertex2f (x, y+h);
|
|
|
|
glEnd ();
|
|
glColor3f (1,1,1);
|
|
glEnable (GL_TEXTURE_2D);
|
|
}
|
|
//=============================================================================
|
|
|
|
/*
|
|
================
|
|
Draw_FadeScreen
|
|
|
|
================
|
|
*/
|
|
void Draw_FadeScreen (void)
|
|
{
|
|
glEnable (GL_BLEND);
|
|
glDisable (GL_TEXTURE_2D);
|
|
glColor4f (0, 0, 0, 0.8);
|
|
glBegin (GL_QUADS);
|
|
|
|
glVertex2f (0,0);
|
|
glVertex2f (vid.width, 0);
|
|
glVertex2f (vid.width, vid.height);
|
|
glVertex2f (0, vid.height);
|
|
|
|
glEnd ();
|
|
glColor4f (1,1,1,1);
|
|
glEnable (GL_TEXTURE_2D);
|
|
glDisable (GL_BLEND);
|
|
|
|
Sbar_Changed();
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
/*
|
|
================
|
|
Draw_BeginDisc
|
|
|
|
Draws the little blue disc in the corner of the screen.
|
|
Call before beginning any disc IO.
|
|
================
|
|
*/
|
|
void Draw_BeginDisc (void)
|
|
{
|
|
if (!draw_disc)
|
|
return;
|
|
glDrawBuffer (GL_FRONT);
|
|
Draw_Pic (vid.width - 24, 0, draw_disc);
|
|
glDrawBuffer (GL_BACK);
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
Draw_EndDisc
|
|
|
|
Erases the disc icon.
|
|
Call after completing any disc IO
|
|
================
|
|
*/
|
|
void Draw_EndDisc (void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
================
|
|
GL_Set2D
|
|
|
|
Setup as if the screen was 320*200
|
|
================
|
|
*/
|
|
void GL_Set2D (void)
|
|
{
|
|
glViewport (glx, gly, glwidth, glheight);
|
|
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity ();
|
|
glOrtho (0, vid.width, vid.height, 0, -99999, 99999);
|
|
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity ();
|
|
|
|
glDisable (GL_DEPTH_TEST);
|
|
glDisable (GL_CULL_FACE);
|
|
glDisable (GL_BLEND);
|
|
glEnable (GL_ALPHA_TEST);
|
|
// glDisable (GL_ALPHA_TEST);
|
|
|
|
glColor4f (1,1,1,1);
|
|
}
|
|
|
|
//====================================================================
|
|
|
|
/*
|
|
================
|
|
GL_FindTexture
|
|
================
|
|
*/
|
|
int GL_FindTexture (char *identifier)
|
|
{
|
|
int i;
|
|
gltexture_t *glt;
|
|
|
|
for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
|
|
{
|
|
if (!strcmp (identifier, glt->identifier))
|
|
return gltextures[i].texnum;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
================
|
|
GL_ResampleTexture
|
|
================
|
|
*/
|
|
void GL_ResampleTexture (unsigned *in, int inwidth, int inheight, unsigned *out, int outwidth, int outheight)
|
|
{
|
|
int i, j;
|
|
unsigned *inrow;
|
|
unsigned frac, fracstep;
|
|
|
|
fracstep = inwidth*0x10000/outwidth;
|
|
for (i=0 ; i<outheight ; i++, out += outwidth)
|
|
{
|
|
inrow = in + inwidth*(i*inheight/outheight);
|
|
frac = fracstep >> 1;
|
|
for (j=0 ; j<outwidth ; j+=4)
|
|
{
|
|
out[j] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
out[j+1] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
out[j+2] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
out[j+3] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
GL_Resample8BitTexture -- JACK
|
|
================
|
|
*/
|
|
void GL_Resample8BitTexture (unsigned char *in, int inwidth, int inheight, unsigned char *out, int outwidth, int outheight)
|
|
{
|
|
int i, j;
|
|
unsigned char *inrow;
|
|
unsigned frac, fracstep;
|
|
|
|
fracstep = inwidth*0x10000/outwidth;
|
|
for (i=0 ; i<outheight ; i++, out += outwidth)
|
|
{
|
|
inrow = in + inwidth*(i*inheight/outheight);
|
|
frac = fracstep >> 1;
|
|
for (j=0 ; j<outwidth ; j+=4)
|
|
{
|
|
out[j] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
out[j+1] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
out[j+2] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
out[j+3] = inrow[frac>>16];
|
|
frac += fracstep;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
GL_MipMap
|
|
|
|
Operates in place, quartering the size of the texture
|
|
================
|
|
*/
|
|
void GL_MipMap (byte *in, int width, int height)
|
|
{
|
|
int i, j;
|
|
byte *out;
|
|
|
|
width <<=2;
|
|
height >>= 1;
|
|
out = in;
|
|
for (i=0 ; i<height ; i++, in+=width)
|
|
{
|
|
for (j=0 ; j<width ; j+=8, out+=4, in+=8)
|
|
{
|
|
out[0] = (in[0] + in[4] + in[width+0] + in[width+4])>>2;
|
|
out[1] = (in[1] + in[5] + in[width+1] + in[width+5])>>2;
|
|
out[2] = (in[2] + in[6] + in[width+2] + in[width+6])>>2;
|
|
out[3] = (in[3] + in[7] + in[width+3] + in[width+7])>>2;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
GL_MipMap8Bit
|
|
|
|
Mipping for 8 bit textures
|
|
================
|
|
*/
|
|
void GL_MipMap8Bit (byte *in, int width, int height)
|
|
{
|
|
int i, j;
|
|
unsigned short r,g,b;
|
|
byte *out, *at1, *at2, *at3, *at4;
|
|
|
|
// width <<=2;
|
|
height >>= 1;
|
|
out = in;
|
|
for (i=0 ; i<height ; i++, in+=width)
|
|
{
|
|
for (j=0 ; j<width ; j+=2, out+=1, in+=2)
|
|
{
|
|
at1 = (byte *) (d_8to24table + in[0]);
|
|
at2 = (byte *) (d_8to24table + in[1]);
|
|
at3 = (byte *) (d_8to24table + in[width+0]);
|
|
at4 = (byte *) (d_8to24table + in[width+1]);
|
|
|
|
r = (at1[0]+at2[0]+at3[0]+at4[0]); r>>=5;
|
|
g = (at1[1]+at2[1]+at3[1]+at4[1]); g>>=5;
|
|
b = (at1[2]+at2[2]+at3[2]+at4[2]); b>>=5;
|
|
|
|
out[0] = d_15to8table[(r<<0) + (g<<5) + (b<<10)];
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
GL_Upload32
|
|
===============
|
|
*/
|
|
void GL_Upload32 (unsigned *data, int width, int height, qboolean mipmap, qboolean alpha)
|
|
{
|
|
int samples;
|
|
static unsigned scaled[1024*512]; // [512*256];
|
|
int scaled_width, scaled_height;
|
|
|
|
for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
|
|
;
|
|
for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
|
|
;
|
|
|
|
scaled_width >>= (int)gl_picmip.value;
|
|
scaled_height >>= (int)gl_picmip.value;
|
|
|
|
if (scaled_width > gl_max_size.value)
|
|
scaled_width = gl_max_size.value;
|
|
if (scaled_height > gl_max_size.value)
|
|
scaled_height = gl_max_size.value;
|
|
|
|
if (scaled_width * scaled_height > sizeof(scaled)/4)
|
|
Sys_Error ("GL_LoadTexture: too big");
|
|
|
|
samples = alpha ? gl_alpha_format : gl_solid_format;
|
|
|
|
#if 0
|
|
if (mipmap)
|
|
gluBuild2DMipmaps (GL_TEXTURE_2D, samples, width, height, GL_RGBA, GL_UNSIGNED_BYTE, trans);
|
|
else if (scaled_width == width && scaled_height == height)
|
|
glTexImage2D (GL_TEXTURE_2D, 0, samples, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, trans);
|
|
else
|
|
{
|
|
gluScaleImage (GL_RGBA, width, height, GL_UNSIGNED_BYTE, trans,
|
|
scaled_width, scaled_height, GL_UNSIGNED_BYTE, scaled);
|
|
glTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
|
|
}
|
|
#else
|
|
texels += scaled_width * scaled_height;
|
|
|
|
if (scaled_width == width && scaled_height == height)
|
|
{
|
|
if (!mipmap)
|
|
{
|
|
glTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
|
|
goto done;
|
|
}
|
|
memcpy (scaled, data, width*height*4);
|
|
}
|
|
else
|
|
GL_ResampleTexture (data, width, height, scaled, scaled_width, scaled_height);
|
|
|
|
glTexImage2D (GL_TEXTURE_2D, 0, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
|
|
if (mipmap)
|
|
{
|
|
int miplevel;
|
|
|
|
miplevel = 0;
|
|
while (scaled_width > 1 || scaled_height > 1)
|
|
{
|
|
GL_MipMap ((byte *)scaled, scaled_width, scaled_height);
|
|
scaled_width >>= 1;
|
|
scaled_height >>= 1;
|
|
if (scaled_width < 1)
|
|
scaled_width = 1;
|
|
if (scaled_height < 1)
|
|
scaled_height = 1;
|
|
miplevel++;
|
|
glTexImage2D (GL_TEXTURE_2D, miplevel, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled);
|
|
}
|
|
}
|
|
done: ;
|
|
#endif
|
|
|
|
|
|
if (mipmap)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
|
|
}
|
|
}
|
|
|
|
void GL_Upload8_EXT (byte *data, int width, int height, qboolean mipmap, qboolean alpha)
|
|
{
|
|
int i, s;
|
|
qboolean noalpha;
|
|
int p;
|
|
static unsigned j;
|
|
int samples;
|
|
static unsigned char scaled[1024*512]; // [512*256];
|
|
int scaled_width, scaled_height;
|
|
|
|
s = width*height;
|
|
// if there are no transparent pixels, make it a 3 component
|
|
// texture even if it was specified as otherwise
|
|
if (alpha)
|
|
{
|
|
noalpha = true;
|
|
for (i=0 ; i<s ; i++)
|
|
{
|
|
if (data[i] == 255)
|
|
noalpha = false;
|
|
}
|
|
|
|
if (alpha && noalpha)
|
|
alpha = false;
|
|
}
|
|
for (scaled_width = 1 ; scaled_width < width ; scaled_width<<=1)
|
|
;
|
|
for (scaled_height = 1 ; scaled_height < height ; scaled_height<<=1)
|
|
;
|
|
|
|
scaled_width >>= (int)gl_picmip.value;
|
|
scaled_height >>= (int)gl_picmip.value;
|
|
|
|
if (scaled_width > gl_max_size.value)
|
|
scaled_width = gl_max_size.value;
|
|
if (scaled_height > gl_max_size.value)
|
|
scaled_height = gl_max_size.value;
|
|
|
|
if (scaled_width * scaled_height > sizeof(scaled))
|
|
Sys_Error ("GL_LoadTexture: too big");
|
|
|
|
samples = 1; // alpha ? gl_alpha_format : gl_solid_format;
|
|
|
|
texels += scaled_width * scaled_height;
|
|
|
|
if (scaled_width == width && scaled_height == height)
|
|
{
|
|
if (!mipmap)
|
|
{
|
|
glTexImage2D (GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX , GL_UNSIGNED_BYTE, data);
|
|
goto done;
|
|
}
|
|
memcpy (scaled, data, width*height);
|
|
}
|
|
else
|
|
GL_Resample8BitTexture (data, width, height, scaled, scaled_width, scaled_height);
|
|
|
|
glTexImage2D (GL_TEXTURE_2D, 0, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, scaled);
|
|
if (mipmap)
|
|
{
|
|
int miplevel;
|
|
|
|
miplevel = 0;
|
|
while (scaled_width > 1 || scaled_height > 1)
|
|
{
|
|
GL_MipMap8Bit ((byte *)scaled, scaled_width, scaled_height);
|
|
scaled_width >>= 1;
|
|
scaled_height >>= 1;
|
|
if (scaled_width < 1)
|
|
scaled_width = 1;
|
|
if (scaled_height < 1)
|
|
scaled_height = 1;
|
|
miplevel++;
|
|
glTexImage2D (GL_TEXTURE_2D, miplevel, GL_COLOR_INDEX8_EXT, scaled_width, scaled_height, 0, GL_COLOR_INDEX, GL_UNSIGNED_BYTE, scaled);
|
|
}
|
|
}
|
|
done: ;
|
|
|
|
|
|
if (mipmap)
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
|
|
}
|
|
else
|
|
{
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_max);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
|
|
}
|
|
}
|
|
|
|
/*
|
|
===============
|
|
GL_Upload8
|
|
===============
|
|
*/
|
|
void GL_Upload8 (byte *data, int width, int height, qboolean mipmap, qboolean alpha)
|
|
{
|
|
static unsigned trans[640*480]; // FIXME, temporary
|
|
int i, s;
|
|
qboolean noalpha;
|
|
int p;
|
|
|
|
s = width*height;
|
|
// if there are no transparent pixels, make it a 3 component
|
|
// texture even if it was specified as otherwise
|
|
if (alpha)
|
|
{
|
|
noalpha = true;
|
|
for (i=0 ; i<s ; i++)
|
|
{
|
|
p = data[i];
|
|
if (p == 255)
|
|
noalpha = false;
|
|
trans[i] = d_8to24table[p];
|
|
}
|
|
|
|
if (alpha && noalpha)
|
|
alpha = false;
|
|
}
|
|
else
|
|
{
|
|
if (s&3)
|
|
Sys_Error ("GL_Upload8: s&3");
|
|
for (i=0 ; i<s ; i+=4)
|
|
{
|
|
trans[i] = d_8to24table[data[i]];
|
|
trans[i+1] = d_8to24table[data[i+1]];
|
|
trans[i+2] = d_8to24table[data[i+2]];
|
|
trans[i+3] = d_8to24table[data[i+3]];
|
|
}
|
|
}
|
|
|
|
if (VID_Is8bit() && !alpha && (data!=scrap_texels[0])) {
|
|
GL_Upload8_EXT (data, width, height, mipmap, alpha);
|
|
return;
|
|
}
|
|
GL_Upload32 (trans, width, height, mipmap, alpha);
|
|
}
|
|
|
|
/*
|
|
================
|
|
GL_LoadTexture
|
|
================
|
|
*/
|
|
int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha)
|
|
{
|
|
qboolean noalpha;
|
|
int i, p, s;
|
|
gltexture_t *glt;
|
|
|
|
// see if the texture is allready present
|
|
if (identifier[0])
|
|
{
|
|
for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++)
|
|
{
|
|
if (!strcmp (identifier, glt->identifier))
|
|
{
|
|
if (width != glt->width || height != glt->height)
|
|
Sys_Error ("GL_LoadTexture: cache mismatch");
|
|
return gltextures[i].texnum;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
glt = &gltextures[numgltextures];
|
|
numgltextures++;
|
|
}
|
|
|
|
strcpy (glt->identifier, identifier);
|
|
glt->texnum = texture_extension_number;
|
|
glt->width = width;
|
|
glt->height = height;
|
|
glt->mipmap = mipmap;
|
|
|
|
GL_Bind(texture_extension_number );
|
|
|
|
GL_Upload8 (data, width, height, mipmap, alpha);
|
|
|
|
texture_extension_number++;
|
|
|
|
return texture_extension_number-1;
|
|
}
|
|
|
|
/*
|
|
================
|
|
GL_LoadPicTexture
|
|
================
|
|
*/
|
|
int GL_LoadPicTexture (qpic_t *pic)
|
|
{
|
|
return GL_LoadTexture ("", pic->width, pic->height, pic->data, false, true);
|
|
}
|
|
|
|
/****************************************/
|
|
|
|
static GLenum oldtarget = TEXTURE0_SGIS;
|
|
|
|
void GL_SelectTexture (GLenum target)
|
|
{
|
|
if (!gl_mtexable)
|
|
return;
|
|
qglSelectTextureSGIS(target);
|
|
if (target == oldtarget)
|
|
return;
|
|
cnttextures[oldtarget-TEXTURE0_SGIS] = currenttexture;
|
|
currenttexture = cnttextures[target-TEXTURE0_SGIS];
|
|
oldtarget = target;
|
|
}
|