2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 cvar_t scr_conalpha = {CVAR_SAVE, "scr_conalpha", "1"};
25 static rtexture_t *char_texture;
27 //=============================================================================
28 /* Support Routines */
30 #define MAX_CACHED_PICS 256
31 #define CACHEPICHASHSIZE 256
32 static cachepic_t *cachepichash[CACHEPICHASHSIZE];
33 static cachepic_t cachepics[MAX_CACHED_PICS];
34 static int numcachepics;
36 static rtexturepool_t *drawtexturepool;
38 static qbyte pointerimage[256] =
58 static rtexture_t *draw_generatemousepointer(void)
62 for (i = 0;i < 256;i++)
64 if (pointerimage[i] == '.')
73 buffer[i][0] = (pointerimage[i] - '0') * 16;
74 buffer[i][1] = (pointerimage[i] - '0') * 16;
75 buffer[i][2] = (pointerimage[i] - '0') * 16;
79 return R_LoadTexture(drawtexturepool, "mousepointer", 16, 16, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE);
82 // must match NUMCROSSHAIRS in r_crosshairs.c
83 #define NUMCROSSHAIRS 5
85 static qbyte *crosshairtexdata[NUMCROSSHAIRS] =
173 static rtexture_t *draw_generatecrosshair(int num)
177 qbyte data[16*16][4];
178 in = crosshairtexdata[num];
179 for (i = 0;i < 16*16;i++)
193 data[i][3] = (qbyte) ((int) (in[i] - '0') * 255 / 7);
196 return R_LoadTexture(drawtexturepool, va("crosshair%i", num), 16, 16, &data[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE);
204 // FIXME: move this to client somehow
205 cachepic_t *Draw_CachePic (char *path)
211 crc = CRC_Block(path, strlen(path));
212 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
213 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
214 if (!strcmp (path, pic->name))
217 if (numcachepics == MAX_CACHED_PICS)
218 Sys_Error ("numcachepics == MAX_CACHED_PICS");
219 pic = cachepics + (numcachepics++);
220 strcpy (pic->name, path);
222 pic->chain = cachepichash[hashkey];
223 cachepichash[hashkey] = pic;
225 // load the pic from disk
226 pic->tex = loadtextureimage(drawtexturepool, path, 0, 0, false, false, true);
227 if (pic->tex == NULL && (p = W_GetLumpName (path)))
229 if (!strcmp(path, "conchars"))
232 // conchars is a raw image and with the wrong transparent color
234 for (i = 0;i < 128 * 128;i++)
237 pic->tex = R_LoadTexture (drawtexturepool, path, 128, 128, pix, TEXTYPE_QPALETTE, TEXF_ALPHA | TEXF_PRECACHE);
240 pic->tex = R_LoadTexture (drawtexturepool, path, p->width, p->height, p->data, TEXTYPE_QPALETTE, TEXF_ALPHA | TEXF_PRECACHE);
242 if (pic->tex == NULL && !strcmp(path, "ui/mousepointer.tga"))
243 pic->tex = draw_generatemousepointer();
244 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair1.tga"))
245 pic->tex = draw_generatecrosshair(0);
246 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair2.tga"))
247 pic->tex = draw_generatecrosshair(1);
248 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair3.tga"))
249 pic->tex = draw_generatecrosshair(2);
250 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair4.tga"))
251 pic->tex = draw_generatecrosshair(3);
252 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair5.tga"))
253 pic->tex = draw_generatecrosshair(4);
254 if (pic->tex == NULL)
255 Sys_Error ("Draw_CachePic: failed to load %s", path);
257 pic->width = R_TextureWidth(pic->tex);
258 pic->height = R_TextureHeight(pic->tex);
262 cachepic_t *Draw_NewPic(char *picname, int width, int height, int alpha, qbyte *pixels)
267 crc = CRC_Block(picname, strlen(picname));
268 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
269 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
270 if (!strcmp (picname, pic->name))
275 if (pic->tex && pic->width == width && pic->height == height)
277 R_UpdateTexture(pic->tex, pixels);
285 if (numcachepics == MAX_CACHED_PICS)
286 Sys_Error ("numcachepics == MAX_CACHED_PICS");
287 pic = cachepics + (numcachepics++);
288 strcpy (pic->name, picname);
290 pic->chain = cachepichash[hashkey];
291 cachepichash[hashkey] = pic;
296 pic->height = height;
298 R_FreeTexture(pic->tex);
299 pic->tex = R_LoadTexture (drawtexturepool, picname, width, height, pixels, TEXTYPE_RGBA, alpha ? TEXF_ALPHA : 0);
303 void Draw_FreePic(char *picname)
308 // this doesn't really free the pic, but does free it's texture
309 crc = CRC_Block(picname, strlen(picname));
310 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
311 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
313 if (!strcmp (picname, pic->name))
315 R_FreeTexture(pic->tex);
328 static void gl_draw_start(void)
330 drawtexturepool = R_AllocTexturePool();
333 memset(cachepichash, 0, sizeof(cachepichash));
335 char_texture = Draw_CachePic("conchars")->tex;
338 static void gl_draw_shutdown(void)
340 R_FreeTexturePool(&drawtexturepool);
343 memset(cachepichash, 0, sizeof(cachepichash));
346 static void gl_draw_newmap(void)
350 void GL_Draw_Init (void)
352 Cvar_RegisterVariable (&scr_conalpha);
355 memset(cachepichash, 0, sizeof(cachepichash));
357 R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap);
360 extern cvar_t gl_mesh_drawrangeelements;
361 extern int gl_maxdrawrangeelementsvertices;
362 extern int gl_maxdrawrangeelementsindices;
365 void R_DrawQueue(void)
367 int pos, num, chartexnum, overbright;
368 float x, y, w, h, s, t, u, v;
371 char *str, *currentpic;
372 int batch, batchcount, additive;
374 drawqueuemesh_t *mesh;
376 if (!r_render.integer)
379 GL_SetupView_ViewPort(vid.realx, vid.realy, vid.realwidth, vid.realheight);
380 GL_SetupView_Mode_Ortho(0, 0, vid.conwidth, vid.conheight, -10, 100);
381 GL_SetupView_Orientation_Identity();
382 GL_DepthFunc(GL_LEQUAL);
385 chartexnum = R_GetTexture(char_texture);
388 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
391 qglBindTexture(GL_TEXTURE_2D, 0);
393 qglColor4ub(0,0,0,0);
395 overbright = v_overbrightbits.integer;
398 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
400 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
401 additive = (dq->flags & DRAWFLAG_ADDITIVE) != 0;
403 m.blendfunc1 = GL_SRC_ALPHA;
405 m.blendfunc2 = GL_ONE;
407 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
408 m.depthdisable = true;
409 R_Mesh_MainState(&m);
410 cr = (float) ((color >> 24) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
411 cg = (float) ((color >> 16) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
412 cb = (float) ((color >> 8) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
413 ca = (float) ( color & 0xFF) * (1.0f / 255.0f);
421 str = (char *)(dq + 1);
424 if (strcmp(str, currentpic))
432 pic = Draw_CachePic(str);
433 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(pic->tex));
442 qglBegin(GL_TRIANGLES);
445 qglTexCoord2f (0, 0);qglVertex2f (x , y );
446 qglTexCoord2f (1, 0);qglVertex2f (x+w, y );
447 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
448 qglTexCoord2f (0, 0);qglVertex2f (x , y );
449 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
450 qglTexCoord2f (0, 1);qglVertex2f (x , y+h);
463 qglBindTexture(GL_TEXTURE_2D, 0);
468 qglBegin(GL_TRIANGLES);
471 qglTexCoord2f (0, 0);qglVertex2f (x , y );
472 qglTexCoord2f (1, 0);qglVertex2f (x+w, y );
473 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
474 qglTexCoord2f (0, 0);qglVertex2f (x , y );
475 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
476 qglTexCoord2f (0, 1);qglVertex2f (x , y+h);
480 case DRAWQUEUE_STRING:
481 str = (char *)(dq + 1);
482 if (strcmp("conchars", currentpic))
489 currentpic = "conchars";
490 qglBindTexture(GL_TEXTURE_2D, chartexnum);
495 qglBegin(GL_TRIANGLES);
498 while ((num = *str++) && x < vid.conwidth)
502 s = (num & 15)*0.0625f + (0.5f / 256.0f);
503 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
504 u = 0.0625f - (1.0f / 256.0f);
505 v = 0.0625f - (1.0f / 256.0f);
506 qglTexCoord2f (s , t );qglVertex2f (x , y );
507 qglTexCoord2f (s+u, t );qglVertex2f (x+w, y );
508 qglTexCoord2f (s+u, t+v);qglVertex2f (x+w, y+h);
509 qglTexCoord2f (s , t );qglVertex2f (x , y );
510 qglTexCoord2f (s+u, t+v);qglVertex2f (x+w, y+h);
511 qglTexCoord2f (s , t+v);qglVertex2f (x , y+h);
524 mesh = (void *)(dq + 1);
525 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(mesh->texture));
526 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), mesh->vertices);CHECKGLERROR
527 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), mesh->texcoords);CHECKGLERROR
528 qglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(qbyte[4]), mesh->colors);CHECKGLERROR
529 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
530 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
531 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
532 GL_DrawRangeElements(0, mesh->numvertices, mesh->numindices, mesh->indices);
533 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
534 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
535 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
537 // restore color, since it got trashed by using color array
538 qglColor4ub((qbyte)(((color >> 24) & 0xFF) >> overbright), (qbyte)(((color >> 16) & 0xFF) >> overbright), (qbyte)(((color >> 8) & 0xFF) >> overbright), (qbyte)(color & 0xFF));
548 if (!v_hwgamma.integer)
550 qglDisable(GL_TEXTURE_2D);
552 t = v_contrast.value * (float) (1 << v_overbrightbits.integer);
555 qglBlendFunc (GL_DST_COLOR, GL_ONE);
557 qglBegin (GL_TRIANGLES);
560 num = (int) ((t - 1.0f) * 255.0f);
563 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
564 qglVertex2f (-5000, -5000);
565 qglVertex2f (10000, -5000);
566 qglVertex2f (-5000, 10000);
574 qglBlendFunc(GL_ZERO, GL_SRC_COLOR);
576 qglBegin(GL_TRIANGLES);
577 num = (int) (t * 255.0f);
578 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
579 qglVertex2f (-5000, -5000);
580 qglVertex2f (10000, -5000);
581 qglVertex2f (-5000, 10000);
585 if (v_brightness.value >= 0.01f)
587 qglBlendFunc (GL_ONE, GL_ONE);
589 num = (int) (v_brightness.value * 255.0f);
590 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
592 qglBegin (GL_TRIANGLES);
593 qglVertex2f (-5000, -5000);
594 qglVertex2f (10000, -5000);
595 qglVertex2f (-5000, 10000);
599 qglEnable(GL_TEXTURE_2D);
603 qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
605 qglEnable (GL_CULL_FACE);
607 qglEnable (GL_DEPTH_TEST);
609 qglDisable (GL_BLEND);
611 qglColor4ub (255, 255, 255, 255);
615 void R_DrawQueue(void)
617 int pos, num, chartexnum, overbright;
618 float x, y, w, h, s, t, u, v;
621 char *str, *currentpic;
622 int batch, batchcount, additive;
624 drawqueuemesh_t *mesh;
626 if (!r_render.integer)
629 qglMatrixMode(GL_PROJECTION);
631 qglOrtho(0, vid.conwidth, vid.conheight, 0, -99999, 99999);
633 qglMatrixMode(GL_MODELVIEW);
636 qglDisable(GL_DEPTH_TEST);
637 qglDisable(GL_CULL_FACE);
639 qglEnable(GL_TEXTURE_2D);
640 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
642 chartexnum = R_GetTexture(char_texture);
645 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
648 qglBindTexture(GL_TEXTURE_2D, 0);
650 qglColor4ub(0,0,0,0);
652 overbright = v_overbrightbits.integer;
655 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
657 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
658 if (dq->flags & DRAWFLAG_ADDITIVE)
668 qglBlendFunc(GL_SRC_ALPHA, GL_ONE);
681 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
684 if (color != dq->color)
687 qglColor4ub((qbyte)(((color >> 24) & 0xFF) >> overbright), (qbyte)(((color >> 16) & 0xFF) >> overbright), (qbyte)(((color >> 8) & 0xFF) >> overbright), (qbyte)(color & 0xFF));
689 if (batch && batchcount > 128)
701 str = (char *)(dq + 1);
704 if (strcmp(str, currentpic))
712 pic = Draw_CachePic(str);
713 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(pic->tex));
722 qglBegin(GL_TRIANGLES);
725 qglTexCoord2f (0, 0);qglVertex2f (x , y );
726 qglTexCoord2f (1, 0);qglVertex2f (x+w, y );
727 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
728 qglTexCoord2f (0, 0);qglVertex2f (x , y );
729 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
730 qglTexCoord2f (0, 1);qglVertex2f (x , y+h);
743 qglBindTexture(GL_TEXTURE_2D, 0);
748 qglBegin(GL_TRIANGLES);
751 qglTexCoord2f (0, 0);qglVertex2f (x , y );
752 qglTexCoord2f (1, 0);qglVertex2f (x+w, y );
753 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
754 qglTexCoord2f (0, 0);qglVertex2f (x , y );
755 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
756 qglTexCoord2f (0, 1);qglVertex2f (x , y+h);
760 case DRAWQUEUE_STRING:
761 str = (char *)(dq + 1);
762 if (strcmp("conchars", currentpic))
769 currentpic = "conchars";
770 qglBindTexture(GL_TEXTURE_2D, chartexnum);
775 qglBegin(GL_TRIANGLES);
778 while ((num = *str++) && x < vid.conwidth)
782 s = (num & 15)*0.0625f + (0.5f / 256.0f);
783 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
784 u = 0.0625f - (1.0f / 256.0f);
785 v = 0.0625f - (1.0f / 256.0f);
786 qglTexCoord2f (s , t );qglVertex2f (x , y );
787 qglTexCoord2f (s+u, t );qglVertex2f (x+w, y );
788 qglTexCoord2f (s+u, t+v);qglVertex2f (x+w, y+h);
789 qglTexCoord2f (s , t );qglVertex2f (x , y );
790 qglTexCoord2f (s+u, t+v);qglVertex2f (x+w, y+h);
791 qglTexCoord2f (s , t+v);qglVertex2f (x , y+h);
804 mesh = (void *)(dq + 1);
805 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(mesh->texture));
806 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), mesh->vertices);CHECKGLERROR
807 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), mesh->texcoords);CHECKGLERROR
808 qglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(qbyte[4]), mesh->colors);CHECKGLERROR
809 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
810 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
811 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
812 GL_DrawRangeElements(0, mesh->numvertices, mesh->numindices, mesh->indices);
813 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
814 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
815 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
817 // restore color, since it got trashed by using color array
818 qglColor4ub((qbyte)(((color >> 24) & 0xFF) >> overbright), (qbyte)(((color >> 16) & 0xFF) >> overbright), (qbyte)(((color >> 8) & 0xFF) >> overbright), (qbyte)(color & 0xFF));
828 if (!v_hwgamma.integer)
830 qglDisable(GL_TEXTURE_2D);
832 t = v_contrast.value * (float) (1 << v_overbrightbits.integer);
835 qglBlendFunc (GL_DST_COLOR, GL_ONE);
837 qglBegin (GL_TRIANGLES);
840 num = (int) ((t - 1.0f) * 255.0f);
843 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
844 qglVertex2f (-5000, -5000);
845 qglVertex2f (10000, -5000);
846 qglVertex2f (-5000, 10000);
854 qglBlendFunc(GL_ZERO, GL_SRC_COLOR);
856 qglBegin(GL_TRIANGLES);
857 num = (int) (t * 255.0f);
858 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
859 qglVertex2f (-5000, -5000);
860 qglVertex2f (10000, -5000);
861 qglVertex2f (-5000, 10000);
865 if (v_brightness.value >= 0.01f)
867 qglBlendFunc (GL_ONE, GL_ONE);
869 num = (int) (v_brightness.value * 255.0f);
870 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
872 qglBegin (GL_TRIANGLES);
873 qglVertex2f (-5000, -5000);
874 qglVertex2f (10000, -5000);
875 qglVertex2f (-5000, 10000);
879 qglEnable(GL_TEXTURE_2D);
883 qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
885 qglEnable (GL_CULL_FACE);
887 qglEnable (GL_DEPTH_TEST);
889 qglDisable (GL_BLEND);
891 qglColor4ub (255, 255, 255, 255);