/* gl_draw.c Draw functions for chars, textures, etc 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: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA $Id$ */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include #include "cmd.h" #include "console.h" #include "crc.h" #include "draw.h" #include "glquake.h" #include "sbar.h" #include "screen.h" #include "sys.h" static int GL_LoadPicTexture (qpic_t *pic, qboolean alpha); extern byte *host_basepal; extern unsigned char d_15to8table[65536]; extern cvar_t *crosshair, *cl_crossx, *cl_crossy, *crosshaircolor, *gl_colorlights; cvar_t *gl_max_size; cvar_t *gl_picmip; cvar_t *gl_constretch; cvar_t *gl_conalpha; cvar_t *gl_conspin; cvar_t *cl_verstring; cvar_t *gl_lightmode; // LordHavoc: lighting mode byte *draw_chars; // 8*8 graphic characters qpic_t *draw_disc; qpic_t *draw_backtile; static int translate_texture; static int char_texture; static int cs_texture; // crosshair texturea static byte cs_data[64] = { 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; typedef struct { int texnum; int bytesperpixel; float sl, tl, sh, th; } glpic_t; 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; typedef struct { int texnum; char identifier[64]; int width, height; int bytesperpixel; qboolean mipmap; unsigned short crc; // LordHavoc: CRC for texture // validation } gltexture_t; static gltexture_t gltextures[MAX_GLTEXTURES]; static int numgltextures = 0; //============================================================================= /* Support Routines */ typedef struct cachepic_s { char name[MAX_QPATH]; qboolean dirty; qpic_t pic; byte padding[32]; // for appended glpic } cachepic_t; #define MAX_CACHED_PICS 128 static cachepic_t cachepics[MAX_CACHED_PICS]; static int numcachepics; static byte menuplyr_pixels[4096]; qpic_t * Draw_PicFromWad (char *name) { qpic_t *p; glpic_t *gl; p = W_GetLumpName (name); gl = (glpic_t *) p->data; gl->texnum = GL_LoadPicTexture (p, true); gl->sl = 0; gl->sh = 1; gl->tl = 0; gl->th = 1; return p; } void Draw_ClearCache (void) { cachepic_t *pic; int i; for (pic = cachepics, i = 0; i < numcachepics; pic++, i++) pic->dirty = true; } /* Draw_CachePic */ qpic_t * Draw_CachePic (char *path, qboolean alpha) { cachepic_t *pic; int i; qpic_t *dat; glpic_t *gl; // First, check and see if its cached.. for (pic = cachepics, i = 0; i < numcachepics; pic++, i++) if ((!strcmp (path, pic->name)) && !pic->dirty) return &pic->pic; // Its not cached, lets make sure we have space in the cache.. if (numcachepics == MAX_CACHED_PICS) Sys_Error ("menu_numcachepics == MAX_CACHED_PICS"); // Load the picture.. dat = (qpic_t *) COM_LoadTempFile (path); if (!dat) Sys_Error ("Draw_CachePic: failed to load %s", path); // Adjust for endian.. SwapPic (dat); // Ok, the image is here, lets load it up into the cache.. // First the image name.. strncpy (pic->name, path, sizeof (pic->name)); // Now the width and height. pic->pic.width = dat->width; pic->pic.height = dat->height; // Now feed it to the GL stuff and get a texture number.. gl = (glpic_t *) pic->pic.data; gl->texnum = GL_LoadPicTexture (dat, alpha); // Alignment stuff.. gl->sl = 0; gl->sh = 1; gl->tl = 0; gl->th = 1; // Now lets mark this cache entry as used.. pic->dirty = false; numcachepics++; // FIXME: // A really ugly kluge, keep a specific image in memory // for the menu system. // // Some days I really dislike legacy support.. if (!strcmp (path, "gfx/menuplyr.lmp")) memcpy (menuplyr_pixels, dat->data, dat->width * dat->height); // And now we are done, return what was asked for.. return &pic->pic; } typedef struct { char *name; int minimize, maximize; } glmode_t; static 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 */ static 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 (!stricmp (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) { glBindTexture (GL_TEXTURE_2D, glt->texnum); glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min); glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); } } } void Draw_TextBox (int x, int y, int width, int lines) { qpic_t *p; int cx, cy; int n; // draw left side cx = x; cy = y; p = Draw_CachePic ("gfx/box_tl.lmp", true); Draw_Pic (cx, cy, p); p = Draw_CachePic ("gfx/box_ml.lmp", true); for (n = 0; n < lines; n++) { cy += 8; Draw_Pic (cx, cy, p); } p = Draw_CachePic ("gfx/box_bl.lmp", true); Draw_Pic (cx, cy + 8, p); // draw middle cx += 8; while (width > 0) { cy = y; p = Draw_CachePic ("gfx/box_tm.lmp", true); Draw_Pic (cx, cy, p); p = Draw_CachePic ("gfx/box_mm.lmp", true); for (n = 0; n < lines; n++) { cy += 8; if (n == 1) p = Draw_CachePic ("gfx/box_mm2.lmp", true); Draw_Pic (cx, cy, p); } p = Draw_CachePic ("gfx/box_bm.lmp", true); Draw_Pic (cx, cy + 8, p); width -= 2; cx += 16; } // draw right side cy = y; p = Draw_CachePic ("gfx/box_tr.lmp", true); Draw_Pic (cx, cy, p); p = Draw_CachePic ("gfx/box_mr.lmp", true); for (n = 0; n < lines; n++) { cy += 8; Draw_Pic (cx, cy, p); } p = Draw_CachePic ("gfx/box_br.lmp", true); Draw_Pic (cx, cy + 8, p); } extern void glrmain_init (void); extern void glrsurf_init (void); /* Draw_Init */ void Draw_Init (void) { int i; // 3dfx can only handle 256 wide textures if (!strncasecmp ((char *) gl_renderer, "3dfx", 4) || !strncasecmp ((char *) gl_renderer, "Mesa", 4)) Cvar_Set (gl_max_size, "256"); // LordHavoc: 3DFX's dithering has terrible artifacting when using // lightmode 1 if (!strncasecmp ((char *) gl_renderer, "3dfx", 4)) Cvar_Set (gl_lightmode, "0"); lighthalf = gl_lightmode->int_val != 0; // to avoid re-rendering all // lightmaps on first frame if (lighthalf) { lighthalf_v[0] = lighthalf_v[1] = lighthalf_v[2] = 128; } else { lighthalf_v[0] = lighthalf_v[1] = lighthalf_v[2] = 255; } Cmd_AddCommand ("gl_texturemode", &Draw_TextureMode_f, "No Description"); // 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, 1); // 1999-12-27 Conwidth/height charset fix by TcT cs_texture = GL_LoadTexture ("crosshair", 8, 8, cs_data, false, true, 1); // char_texture = GL_LoadTexture ("charset", 128, 128, draw_chars, false, true, 1); // 1999-12-27 Conwidth/height charset fix by TcT glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // save a texture slot for translated picture translate_texture = texture_extension_number++; // // get the other pics we need // draw_disc = Draw_PicFromWad ("disc"); draw_backtile = Draw_PicFromWad ("backtile"); // LordHavoc: call init code for other GL renderer modules; glrmain_init (); glrsurf_init (); } void Draw_Init_Cvars (void) { gl_lightmode = Cvar_Get ("gl_lightmode", "1", CVAR_ARCHIVE, NULL, "Lighting mode (0 = GLQuake style, 1 = new style)"); gl_max_size = Cvar_Get ("gl_max_size", "1024", CVAR_NONE, NULL, "Texture dimension"); gl_picmip = Cvar_Get ("gl_picmip", "0", CVAR_NONE, NULL, "Dimensions of displayed textures. 0 is normal, 1 is half, 2 is 1/4"); gl_colorlights = Cvar_Get ("gl_colorlights", "1", CVAR_ROM, NULL, "Whether to use RGB lightmaps or not"); gl_constretch = Cvar_Get ("gl_constretch", "0", CVAR_ARCHIVE, NULL, "whether slide the console or stretch it"); gl_conalpha = Cvar_Get ("gl_conalpha", "0.6", CVAR_ARCHIVE, NULL, "alpha value for the console background"); gl_conspin = Cvar_Get ("gl_conspin", "0", CVAR_ARCHIVE, NULL, "speed at which the console spins"); cl_verstring = Cvar_Get ("cl_verstring", PROGRAM " " VERSION, CVAR_NONE, NULL, "Client version string"); } /* Draw_Character8 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_Character8 (int x, int y, int num) { 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; glBindTexture (GL_TEXTURE_2D, 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_String8 */ void Draw_String8 (int x, int y, char *str) { while (*str) { Draw_Character8 (x, y, *str); str++; x += 8; } } /* Draw_AltString8 */ void Draw_AltString8 (int x, int y, char *str) { while (*str) { Draw_Character8 (x, y, (*str) | 0x80); str++; x += 8; } } void Draw_Crosshair (void) { int x, y; extern vrect_t scr_vrect; unsigned char *pColor; switch (crosshair->int_val) { case 0: break; case 1: default: Draw_Character8 (scr_vrect.x + scr_vrect.width / 2 - 4 + cl_crossx->int_val, scr_vrect.y + scr_vrect.height / 2 - 4 + cl_crossy->int_val, '+'); break; case 2: x = scr_vrect.x + scr_vrect.width / 2 - 3 + cl_crossx->int_val; y = scr_vrect.y + scr_vrect.height / 2 - 3 + cl_crossy->int_val; pColor = (unsigned char *) &d_8to24table[crosshaircolor->int_val]; if (lighthalf) glColor4ub ((byte) ((int) pColor[0] >> 1), (byte) ((int) pColor[1] >> 1), (byte) ((int) pColor[2] >> 1), pColor[3]); else glColor4ubv (pColor); glBindTexture (GL_TEXTURE_2D, cs_texture); glBegin (GL_QUADS); glTexCoord2f (0, 0); glVertex2f (x - 4, y - 4); glTexCoord2f (1, 0); glVertex2f (x + 12, y - 4); glTexCoord2f (1, 1); glVertex2f (x + 12, y + 12); glTexCoord2f (0, 1); glVertex2f (x - 4, y + 12); glEnd (); glColor3ubv (lighthalf_v); break; } } /* Draw_Pic */ void Draw_Pic (int x, int y, qpic_t *pic) { glpic_t *gl; gl = (glpic_t *) pic->data; glBindTexture (GL_TEXTURE_2D, 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 (); } void Draw_SubPic (int x, int y, qpic_t *pic, int srcx, int srcy, int width, int height) { glpic_t *gl; float newsl, newtl, newsh, newth; float oldglwidth, oldglheight; gl = (glpic_t *) pic->data; oldglwidth = gl->sh - gl->sl; oldglheight = gl->th - gl->tl; newsl = gl->sl + (srcx * oldglwidth) / pic->width; newsh = newsl + (width * oldglwidth) / pic->width; newtl = gl->tl + (srcy * oldglheight) / pic->height; newth = newtl + (height * oldglheight) / pic->height; if (lighthalf) glColor3f (0.4, 0.4, 0.4); else glColor3f (0.8, 0.8, 0.8); glBindTexture (GL_TEXTURE_2D, gl->texnum); glBegin (GL_QUADS); glTexCoord2f (newsl, newtl); glVertex2f (x, y); glTexCoord2f (newsh, newtl); glVertex2f (x + width, y); glTexCoord2f (newsh, newth); glVertex2f (x + width, y + height); glTexCoord2f (newsl, newth); glVertex2f (x, y + height); glEnd (); glColor3ubv (lighthalf_v); } /* 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 int trans[64 * 64], *dest; byte *src; int p; glBindTexture (GL_TEXTURE_2D, 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_filter_min); glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); if (lighthalf) glColor3f (0.4, 0.4, 0.4); else glColor3f (0.8, 0.8, 0.8); 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 (); glColor3ubv (lighthalf_v); } /* Draw_ConsoleBackground Draws console background (obviously!) Completely rewritten to use several simple yet very cool GL effects. --KB */ void Draw_ConsoleBackground (int lines) { int y; qpic_t *conback; glpic_t *gl; float ofs; float alpha; // This can be a CachePic now, just like in software conback = Draw_CachePic ("gfx/conback.lmp", false); gl = (glpic_t *) conback->data; // spin the console? - effect described in a QER tutorial if (gl_conspin->value) { static float xangle = 0; static float xfactor = .3f; static float xstep = .005f; glPushMatrix (); glMatrixMode (GL_TEXTURE); glPushMatrix (); glLoadIdentity (); xangle += gl_conspin->value; xfactor += xstep; if (xfactor > 8 || xfactor < .3f) xstep = -xstep; glRotatef (xangle, 0, 0, 1); glScalef (xfactor, xfactor, xfactor); } // slide console up/down or stretch it? if (gl_constretch->int_val) ofs = 0; else ofs = (vid.conheight - lines) / (float) vid.conheight; y = vid.height * scr_consize->value; if (cls.state != ca_active || lines > y) { alpha = 1.0; } else { // set up to draw alpha console alpha = (float) (gl_conalpha->value * lines) / y; } if (lighthalf) glColor4f (0.4, 0.4, 0.4, alpha); else glColor4f (0.8, 0.8, 0.8, alpha); // draw the console texture glBindTexture (GL_TEXTURE_2D, gl->texnum); glBegin (GL_QUADS); glTexCoord2f (gl->sl, gl->tl + ofs); glVertex2f (0, 0); glTexCoord2f (gl->sh, gl->tl + ofs); glVertex2f (vid.conwidth, 0); glTexCoord2f (gl->sh, gl->th); glVertex2f (vid.conwidth, lines); glTexCoord2f (gl->sl, gl->th); glVertex2f (0, lines); glEnd (); // turn off alpha blending if (alpha < 1.0) { if (lighthalf) glColor3f (0.4, 0.4, 0.4); else glColor3f (0.8, 0.8, 0.8); } if (gl_conspin->value) { glPopMatrix (); glMatrixMode (GL_MODELVIEW); glPopMatrix (); } // draw version string if not downloading if (!cls.download) Draw_AltString8 (vid.conwidth - strlen (cl_verstring->string) * 8 - 11, lines - 14, cl_verstring->string); glColor3ubv (lighthalf_v); } /* 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) { if (lighthalf) glColor3f (0.4, 0.4, 0.4); else glColor3f (0.8, 0.8, 0.8); glBindTexture (GL_TEXTURE_2D, *(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 (); glColor3ubv (lighthalf_v); } /* 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); if (lighthalf) glColor3f (host_basepal[c * 3] / 510.0, host_basepal[c * 3 + 1] / 510.0, host_basepal[c * 3 + 2] / 510.0); else 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 (); glColor3ubv (lighthalf_v); glEnable (GL_TEXTURE_2D); } //============================================================================= /* Draw_FadeScreen */ void Draw_FadeScreen (void) { glDisable (GL_TEXTURE_2D); glColor4f (0, 0, 0, 0.7); glBegin (GL_QUADS); glVertex2f (0, 0); glVertex2f (vid.width, 0); glVertex2f (vid.width, vid.height); glVertex2f (0, vid.height); glEnd (); glColor3ubv (lighthalf_v); glEnable (GL_TEXTURE_2D); 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) { } /* 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); glColor3ubv (lighthalf_v); } //==================================================================== /* GL_ResampleTexture */ static void GL_ResampleTexture (unsigned int *in, int inwidth, int inheight, unsigned int *out, int outwidth, int outheight) { int i, j; unsigned int *inrow; unsigned int frac, fracstep; if (!outwidth || !outheight) return; 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 ++) { out[j] = inrow[frac >> 16]; frac += fracstep; } } } /* GL_Resample8BitTexture -- JACK */ #if defined(GL_SHARED_TEXTURE_PALETTE_EXT) && defined(HAVE_GL_COLOR_INDEX8_EXT) static void GL_Resample8BitTexture (unsigned char *in, int inwidth, int inheight, unsigned char *out, int outwidth, int outheight) { int i, j; unsigned char *inrow; unsigned int frac, fracstep; if (!outwidth || !outheight) return; 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 ++) { out[j] = inrow[frac >> 16]; frac += fracstep; } } } #endif /* GL_MipMap Operates in place, quartering the size of the texture */ static 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 */ #if defined(GL_SHARED_TEXTURE_PALETTE_EXT) && defined(HAVE_GL_COLOR_INDEX8_EXT) static void GL_MipMap8Bit (byte * in, int width, int height) { int i, j; byte *out; unsigned short r, g, b; byte *at1, *at2, *at3, *at4; 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)]; } } #endif /* GL_Upload32 */ static void GL_Upload32 (unsigned int *data, int width, int height, qboolean mipmap, qboolean alpha) { unsigned int *scaled; int scaled_width, scaled_height, samples; if (!width || !height) return; // Null texture // Snap the height and width to a power of 2. for (scaled_width = 1; scaled_width < width; scaled_width <<= 1); for (scaled_height = 1; scaled_height < height; scaled_height <<= 1); scaled_width >>= gl_picmip->int_val; scaled_height >>= gl_picmip->int_val; scaled_width = min (scaled_width, gl_max_size->int_val); scaled_height = min (scaled_height, gl_max_size->int_val); if (!(scaled = malloc (scaled_width * scaled_height * sizeof (GLuint)))) Sys_Error ("GL_LoadTexture: too big"); samples = alpha ? gl_alpha_format : gl_solid_format; // If the real width/height and the 'scaled' width/height then we // rescale it. if (scaled_width == width && scaled_height == height) { memcpy (scaled, data, width * height * sizeof (GLuint)); } 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; scaled_width = max (scaled_width, 1); scaled_height = max (scaled_height, 1); miplevel++; glTexImage2D (GL_TEXTURE_2D, miplevel, samples, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, scaled); } } 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); if (gl_picmip->int_val) glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); else glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); } free (scaled); } /* GL_Upload8_EXT If we have shared or global palettes, upload an 8-bit texture. If we don't, this function does nothing. */ void GL_Upload8_EXT (byte * data, int width, int height, qboolean mipmap, qboolean alpha) { #if defined(GL_SHARED_TEXTURE_PALETTE_EXT) && defined(HAVE_GL_COLOR_INDEX8_EXT) byte *scaled; int scaled_width, scaled_height; // Snap the height and width to a power of 2. for (scaled_width = 1; scaled_width < width; scaled_width <<= 1); for (scaled_height = 1; scaled_height < height; scaled_height <<= 1); scaled_width >>= gl_picmip->int_val; scaled_height >>= gl_picmip->int_val; scaled_width = min (scaled_width, gl_max_size->int_val); scaled_height = min (scaled_height, gl_max_size->int_val); if (!(scaled = malloc (scaled_width * scaled_height))) Sys_Error ("GL_LoadTexture: too big"); // If the real width/height and the 'scaled' width/height then we // rescale it. if (scaled_width == width && scaled_height == height) { 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; scaled_width = max (scaled_width, 1); scaled_height = max (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); } } 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); if (gl_picmip->int_val) glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); else glTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); } free (scaled); #endif } extern qboolean VID_Is8bit (void); /* GL_Upload8 */ void GL_Upload8 (byte * data, int width, int height, qboolean mipmap, qboolean alpha) { unsigned int *trans = NULL; int i, s, p; s = width * height; trans = malloc (s * sizeof (unsigned int)); // if there are no transparent pixels, make it a 3 component // texture even if it was specified as otherwise if (alpha) { alpha = false; for (i = 0; i < s; i++) { p = data[i]; if (p == 255) alpha = true; trans[i] = d_8to24table[p]; } } else { if (s & 3) Sys_Error ("GL_Upload8: width*height divisible by 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 defined(GL_SHARED_TEXTURE_PALETTE_EXT) && defined(HAVE_GL_COLOR_INDEX8_EXT) if (VID_Is8bit () && !alpha) { GL_Upload8_EXT (data, width, height, mipmap, alpha); } else { #else { #endif GL_Upload32 (trans, width, height, mipmap, alpha); } free (trans); } /* GL_LoadTexture */ int GL_LoadTexture (char *identifier, int width, int height, byte * data, qboolean mipmap, qboolean alpha, int bytesperpixel) { gltexture_t *glt; int i, crc; // LordHavoc: now just using a standard CRC for texture validation crc = CRC_Block (data, width * height * bytesperpixel); // see if the texture is already present if (identifier[0]) { for (i = 0, glt = gltextures; i < numgltextures; i++, glt++) { if (strequal (identifier, glt->identifier)) { if (crc != glt->crc || width != glt->width || height != glt->height || bytesperpixel != glt->bytesperpixel) goto SetupTexture; else return gltextures[i].texnum; } } } if (numgltextures == MAX_GLTEXTURES) Sys_Error ("numgltextures == MAX_GLTEXTURES"); glt = &gltextures[numgltextures]; numgltextures++; strncpy (glt->identifier, identifier, sizeof (glt->identifier) - 1); glt->identifier[sizeof (glt->identifier) - 1] = '\0'; glt->texnum = texture_extension_number; texture_extension_number++; SetupTexture: glt->crc = crc; glt->width = width; glt->height = height; glt->bytesperpixel = bytesperpixel; glt->mipmap = mipmap; glBindTexture (GL_TEXTURE_2D, glt->texnum); switch (glt->bytesperpixel) { case 1: GL_Upload8 (data, width, height, mipmap, alpha); break; case 4: GL_Upload32 ((GLuint *) data, width, height, mipmap, alpha); break; default: Sys_Error ("SetupTexture: unknown bytesperpixel %i", glt->bytesperpixel); } return glt->texnum; } /* GL_LoadPicTexture */ static int GL_LoadPicTexture (qpic_t *pic, qboolean alpha) { return GL_LoadTexture ("", pic->width, pic->height, pic->data, false, alpha, 1); }