| 0,0 → 1,1297 |
|---|
| /* |
| Copyright (C) 1996-1997 Id Software, Inc. |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; either version 2 |
| of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| |
| See the GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| */ |
| |
| // draw.c -- this is the only file outside the refresh that touches the |
| // vid buffer |
| |
| #include "quakedef.h" |
| |
| #define GL_COLOR_INDEX8_EXT 0x80E5 |
| |
| extern unsigned char d_15to8table[65536]; |
| |
| cvar_t gl_nobind = {"gl_nobind", "0"}; |
| cvar_t gl_max_size = {"gl_max_size", "1024"}; |
| cvar_t gl_picmip = {"gl_picmip", "0"}; |
| |
| byte *draw_chars; // 8*8 graphic characters |
| qpic_t *draw_disc; |
| qpic_t *draw_backtile; |
| |
| int translate_texture; |
| int char_texture; |
| |
| typedef struct |
| { |
| int texnum; |
| float sl, tl, sh, th; |
| } glpic_t; |
| |
| byte conback_buffer[sizeof(qpic_t) + sizeof(glpic_t)]; |
| qpic_t *conback = (qpic_t *)&conback_buffer; |
| |
| int gl_lightmap_format = 4; |
| int gl_solid_format = 3; |
| int gl_alpha_format = 4; |
| |
| int gl_filter_min = GL_LINEAR_MIPMAP_NEAREST; |
| int gl_filter_max = GL_LINEAR; |
| |
| |
| int texels; |
| |
| typedef struct |
| { |
| int texnum; |
| char identifier[64]; |
| int width, height; |
| qboolean mipmap; |
| } gltexture_t; |
| |
| #define MAX_GLTEXTURES 1024 |
| gltexture_t gltextures[MAX_GLTEXTURES]; |
| int numgltextures; |
| |
| |
| void GL_Bind (int texnum) |
| { |
| if (gl_nobind.value) |
| texnum = char_texture; |
| if (currenttexture == texnum) |
| return; |
| currenttexture = texnum; |
| #ifdef _WIN32 |
| bindTexFunc (GL_TEXTURE_2D, texnum); |
| #else |
| glBindTexture(GL_TEXTURE_2D, texnum); |
| #endif |
| } |
| |
| |
| /* |
| ============================================================================= |
| |
| scrap allocation |
| |
| Allocate all the little status bar obejcts into a single texture |
| to crutch up stupid hardware / drivers |
| |
| ============================================================================= |
| */ |
| |
| #define MAX_SCRAPS 2 |
| #define BLOCK_WIDTH 256 |
| #define BLOCK_HEIGHT 256 |
| |
| int scrap_allocated[MAX_SCRAPS][BLOCK_WIDTH]; |
| byte scrap_texels[MAX_SCRAPS][BLOCK_WIDTH*BLOCK_HEIGHT*4]; |
| qboolean scrap_dirty; |
| int scrap_texnum; |
| |
| // returns a texture number and the position inside it |
| int Scrap_AllocBlock (int w, int h, int *x, int *y) |
| { |
| int i, j; |
| int best, best2; |
| int bestx; |
| int texnum; |
| |
| for (texnum=0 ; texnum<MAX_SCRAPS ; texnum++) |
| { |
| best = BLOCK_HEIGHT; |
| |
| for (i=0 ; i<BLOCK_WIDTH-w ; i++) |
| { |
| best2 = 0; |
| |
| for (j=0 ; j<w ; j++) |
| { |
| if (scrap_allocated[texnum][i+j] >= best) |
| break; |
| if (scrap_allocated[texnum][i+j] > best2) |
| best2 = scrap_allocated[texnum][i+j]; |
| } |
| if (j == w) |
| { // this is a valid spot |
| *x = i; |
| *y = best = best2; |
| } |
| } |
| |
| if (best + h > BLOCK_HEIGHT) |
| continue; |
| |
| for (i=0 ; i<w ; i++) |
| scrap_allocated[texnum][*x + i] = best + h; |
| |
| return texnum; |
| } |
| |
| Sys_Error ("Scrap_AllocBlock: full"); |
| } |
| |
| int scrap_uploads; |
| |
| void Scrap_Upload (void) |
| { |
| int texnum; |
| |
| scrap_uploads++; |
| |
| for (texnum=0 ; texnum<MAX_SCRAPS ; texnum++) { |
| GL_Bind(scrap_texnum + texnum); |
| GL_Upload8 (scrap_texels[texnum], BLOCK_WIDTH, BLOCK_HEIGHT, false, true); |
| } |
| scrap_dirty = false; |
| } |
| |
| //============================================================================= |
| /* Support Routines */ |
| |
| typedef struct cachepic_s |
| { |
| char name[MAX_QPATH]; |
| qpic_t pic; |
| byte padding[32]; // for appended glpic |
| } cachepic_t; |
| |
| #define MAX_CACHED_PICS 128 |
| cachepic_t menu_cachepics[MAX_CACHED_PICS]; |
| int menu_numcachepics; |
| |
| byte menuplyr_pixels[4096]; |
| |
| int pic_texels; |
| int pic_count; |
| |
| qpic_t *Draw_PicFromWad (char *name) |
| { |
| qpic_t *p; |
| glpic_t *gl; |
| |
| p = W_GetLumpName (name); |
| gl = (glpic_t *)p->data; |
| |
| // load little ones into the scrap |
| if (p->width < 64 && p->height < 64) |
| { |
| int x, y; |
| int i, j, k; |
| int texnum; |
| |
| texnum = Scrap_AllocBlock (p->width, p->height, &x, &y); |
| scrap_dirty = true; |
| k = 0; |
| for (i=0 ; i<p->height ; i++) |
| for (j=0 ; j<p->width ; j++, k++) |
| scrap_texels[texnum][(y+i)*BLOCK_WIDTH + x + j] = p->data[k]; |
| texnum += scrap_texnum; |
| gl->texnum = texnum; |
| gl->sl = (x+0.01)/(float)BLOCK_WIDTH; |
| gl->sh = (x+p->width-0.01)/(float)BLOCK_WIDTH; |
| gl->tl = (y+0.01)/(float)BLOCK_WIDTH; |
| gl->th = (y+p->height-0.01)/(float)BLOCK_WIDTH; |
| |
| pic_count++; |
| pic_texels += p->width*p->height; |
| } |
| else |
| { |
| gl->texnum = GL_LoadPicTexture (p); |
| gl->sl = 0; |
| gl->sh = 1; |
| gl->tl = 0; |
| gl->th = 1; |
| } |
| return p; |
| } |
| |
| |
| /* |
| ================ |
| Draw_CachePic |
| ================ |
| */ |
| qpic_t *Draw_CachePic (char *path) |
| { |
| cachepic_t *pic; |
| int i; |
| qpic_t *dat; |
| glpic_t *gl; |
| |
| for (pic=menu_cachepics, i=0 ; i<menu_numcachepics ; pic++, i++) |
| if (!strcmp (path, pic->name)) |
| return &pic->pic; |
| |
| if (menu_numcachepics == MAX_CACHED_PICS) |
| Sys_Error ("menu_numcachepics == MAX_CACHED_PICS"); |
| menu_numcachepics++; |
| strcpy (pic->name, path); |
| |
| // |
| // load the pic from disk |
| // |
| dat = (qpic_t *)COM_LoadTempFile (path); |
| if (!dat) |
| Sys_Error ("Draw_CachePic: failed to load %s", path); |
| SwapPic (dat); |
| |
| // HACK HACK HACK --- we need to keep the bytes for |
| // the translatable player picture just for the menu |
| // configuration dialog |
| if (!strcmp (path, "gfx/menuplyr.lmp")) |
| memcpy (menuplyr_pixels, dat->data, dat->width*dat->height); |
| |
| pic->pic.width = dat->width; |
| pic->pic.height = dat->height; |
| |
| gl = (glpic_t *)pic->pic.data; |
| gl->texnum = GL_LoadPicTexture (dat); |
| gl->sl = 0; |
| gl->sh = 1; |
| gl->tl = 0; |
| gl->th = 1; |
| |
| return &pic->pic; |
| } |
| |
| |
| void Draw_CharToConback (int num, byte *dest) |
| { |
| int row, col; |
| byte *source; |
| int drawline; |
| int x; |
| |
| row = num>>4; |
| col = num&15; |
| source = draw_chars + (row<<10) + (col<<3); |
| |
| drawline = 8; |
| |
| while (drawline--) |
| { |
| for (x=0 ; x<8 ; x++) |
| if (source[x] != 255) |
| dest[x] = 0x60 + source[x]; |
| source += 128; |
| dest += 320; |
| } |
| |
| } |
| |
| typedef struct |
| { |
| char *name; |
| int minimize, maximize; |
| } glmode_t; |
| |
| glmode_t modes[] = { |
| {"GL_NEAREST", GL_NEAREST, GL_NEAREST}, |
| {"GL_LINEAR", GL_LINEAR, GL_LINEAR}, |
| {"GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST}, |
| {"GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR}, |
| {"GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST}, |
| {"GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR} |
| }; |
| |
| /* |
| =============== |
| Draw_TextureMode_f |
| =============== |
| */ |
| void Draw_TextureMode_f (void) |
| { |
| int i; |
| gltexture_t *glt; |
| |
| if (Cmd_Argc() == 1) |
| { |
| for (i=0 ; i< 6 ; i++) |
| if (gl_filter_min == modes[i].minimize) |
| { |
| Con_Printf ("%s\n", modes[i].name); |
| return; |
| } |
| Con_Printf ("current filter is unknown???\n"); |
| return; |
| } |
| |
| for (i=0 ; i< 6 ; i++) |
| { |
| if (!Q_strcasecmp (modes[i].name, Cmd_Argv(1) ) ) |
| break; |
| } |
| if (i == 6) |
| { |
| Con_Printf ("bad filter name\n"); |
| return; |
| } |
| |
| gl_filter_min = modes[i].minimize; |
| gl_filter_max = modes[i].maximize; |
| |
| // change all the existing mipmap texture objects |
| for (i=0, glt=gltextures ; i<numgltextures ; i++, glt++) |
| { |
| if (glt->mipmap) |
| { |
| GL_Bind (glt->texnum); |
| glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min); |
| glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); |
| } |
| } |
| } |
| |
| /* |
| =============== |
| Draw_Init |
| =============== |
| */ |
| void Draw_Init (void) |
| { |
| int i; |
| qpic_t *cb; |
| byte *dest, *src; |
| int x, y; |
| char ver[40]; |
| glpic_t *gl; |
| int start; |
| byte *ncdata; |
| int f, fstep; |
| |
| |
| Cvar_RegisterVariable (&gl_nobind); |
| Cvar_RegisterVariable (&gl_max_size); |
| Cvar_RegisterVariable (&gl_picmip); |
| |
| // 3dfx can only handle 256 wide textures |
| if (!Q_strncasecmp ((char *)gl_renderer, "3dfx",4) || |
| strstr((char *)gl_renderer, "Glide")) |
| Cvar_Set ("gl_max_size", "256"); |
| |
| Cmd_AddCommand ("gl_texturemode", &Draw_TextureMode_f); |
| |
| // load the console background and the charset |
| // by hand, because we need to write the version |
| // string into the background before turning |
| // it into a texture |
| draw_chars = W_GetLumpName ("conchars"); |
| for (i=0 ; i<256*64 ; i++) |
| if (draw_chars[i] == 0) |
| draw_chars[i] = 255; // proper transparent color |
| |
| // now turn them into textures |
| char_texture = GL_LoadTexture ("charset", 128, 128, draw_chars, false, true); |
| |
| start = Hunk_LowMark(); |
| |
| cb = (qpic_t *)COM_LoadTempFile ("gfx/conback.lmp"); |
| if (!cb) |
| Sys_Error ("Couldn't load gfx/conback.lmp"); |
| SwapPic (cb); |
| |
| // hack the version number directly into the pic |
| #if defined(__linux__) |
| sprintf (ver, "(Linux %2.2f, gl %4.2f) %4.2f", (float)LINUX_VERSION, (float)GLQUAKE_VERSION, (float)VERSION); |
| #else |
| sprintf (ver, "(gl %4.2f) %4.2f", (float)GLQUAKE_VERSION, (float)VERSION); |
| #endif |
| dest = cb->data + 320*186 + 320 - 11 - 8*strlen(ver); |
| y = strlen(ver); |
| for (x=0 ; x<y ; x++) |
| Draw_CharToConback (ver[x], dest+(x<<3)); |
| |
| #if 0 |
| conback->width = vid.conwidth; |
| conback->height = vid.conheight; |
| |
| // scale console to vid size |
| dest = ncdata = Hunk_AllocName(vid.conwidth * vid.conheight, "conback"); |
| |
| for (y=0 ; y<vid.conheight ; y++, dest += vid.conwidth) |
| { |
| src = cb->data + cb->width * (y*cb->height/vid.conheight); |
| if (vid.conwidth == cb->width) |
| memcpy (dest, src, vid.conwidth); |
| else |
| { |
| f = 0; |
| fstep = cb->width*0x10000/vid.conwidth; |
| for (x=0 ; x<vid.conwidth ; x+=4) |
| { |
| dest[x] = src[f>>16]; |
| f += fstep; |
| dest[x+1] = src[f>>16]; |
| f += fstep; |
| dest[x+2] = src[f>>16]; |
| f += fstep; |
| dest[x+3] = src[f>>16]; |
| f += fstep; |
| } |
| } |
| } |
| #else |
| conback->width = cb->width; |
| conback->height = cb->height; |
| ncdata = cb->data; |
| #endif |
| |
| glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| |
| gl = (glpic_t *)conback->data; |
| gl->texnum = GL_LoadTexture ("conback", conback->width, conback->height, ncdata, false, false); |
| gl->sl = 0; |
| gl->sh = 1; |
| gl->tl = 0; |
| gl->th = 1; |
| conback->width = vid.width; |
| conback->height = vid.height; |
| |
| // free loaded console |
| Hunk_FreeToLowMark(start); |
| |
| // save a texture slot for translated picture |
| translate_texture = texture_extension_number++; |
| |
| // save slots for scraps |
| scrap_texnum = texture_extension_number; |
| texture_extension_number += MAX_SCRAPS; |
| |
| // |
| // get the other pics we need |
| // |
| draw_disc = Draw_PicFromWad ("disc"); |
| draw_backtile = Draw_PicFromWad ("backtile"); |
| } |
| |
| |
| |
| /* |
| ================ |
| Draw_Character |
| |
| Draws one 8*8 graphics character with 0 being transparent. |
| It can be clipped to the top of the screen to allow the console to be |
| smoothly scrolled off. |
| ================ |
| */ |
| void Draw_Character (int x, int y, int num) |
| { |
| byte *dest; |
| byte *source; |
| unsigned short *pusdest; |
| int drawline; |
| int row, col; |
| float frow, fcol, size; |
| |
| if (num == 32) |
| return; // space |
| |
| num &= 255; |
| |
| if (y <= -8) |
| return; // totally off screen |
| |
| row = num>>4; |
| col = num&15; |
| |
| frow = row*0.0625; |
| fcol = col*0.0625; |
| size = 0.0625; |
| |
| GL_Bind (char_texture); |
| |
| glBegin (GL_QUADS); |
| glTexCoord2f (fcol, frow); |
| glVertex2f (x, y); |
| glTexCoord2f (fcol + size, frow); |
| glVertex2f (x+8, y); |
| glTexCoord2f (fcol + size, frow + size); |
| glVertex2f (x+8, y+8); |
| glTexCoord2f (fcol, frow + size); |
| glVertex2f (x, y+8); |
| glEnd (); |
| } |
| |
| /* |
| ================ |
| Draw_String |
| ================ |
| */ |
| void Draw_String (int x, int y, char *str) |
| { |
| while (*str) |
| { |
| Draw_Character (x, y, *str); |
| str++; |
| x += 8; |
| } |
| } |
| |
| /* |
| ================ |
| Draw_DebugChar |
| |
| Draws a single character directly to the upper right corner of the screen. |
| This is for debugging lockups by drawing different chars in different parts |
| of the code. |
| ================ |
| */ |
| void Draw_DebugChar (char num) |
| { |
| } |
| |
| /* |
| ============= |
| Draw_AlphaPic |
| ============= |
| */ |
| 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; |
| } |