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;
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);
392 overbright = v_overbrightbits.integer;
395 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
397 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
398 additive = (dq->flags & DRAWFLAG_ADDITIVE) != 0;
400 m.blendfunc1 = GL_SRC_ALPHA;
402 m.blendfunc2 = GL_ONE;
404 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
405 m.depthdisable = true;
406 R_Mesh_MainState(&m);
408 cr = (float) ((color >> 24) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
409 cg = (float) ((color >> 16) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
410 cb = (float) ((color >> 8) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
411 ca = (float) ( color & 0xFF) * (1.0f / 255.0f);
420 str = (char *)(dq + 1);
421 if (strcmp(str, currentpic))
429 pic = Draw_CachePic(str);
430 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(pic->tex));
439 varray_color[0] = varray_color[4] = varray_color[ 8] = varray_color[12] = cr;
440 varray_color[1] = varray_color[5] = varray_color[ 9] = varray_color[13] = cg;
441 varray_color[2] = varray_color[6] = varray_color[10] = varray_color[14] = cb;
442 varray_color[3] = varray_color[7] = varray_color[11] = varray_color[15] = ca;
443 varray_texcoord[0] = 0;varray_texcoord[1] = 0;
444 varray_texcoord[2] = 1;varray_texcoord[3] = 0;
445 varray_texcoord[4] = 1;varray_texcoord[5] = 1;
446 varray_texcoord[6] = 0;varray_texcoord[7] = 1;
447 varray_vertex[ 0] = x ;varray_vertex[ 1] = y ;varray_vertex[ 2] = 0;
448 varray_vertex[ 4] = x+w;varray_vertex[ 5] = y ;varray_vertex[ 6] = 0;
449 varray_vertex[ 8] = x+w;varray_vertex[ 9] = y+h;varray_vertex[10] = 0;
450 varray_vertex[12] = x ;varray_vertex[13] = y+h;varray_vertex[14] = 0;
451 R_Mesh_Draw(4, 2, polygonelements);
453 case DRAWQUEUE_STRING:
454 str = (char *)(dq + 1);
455 if (strcmp("conchars", currentpic))
462 currentpic = "conchars";
463 qglBindTexture(GL_TEXTURE_2D, chartexnum);
467 at = varray_texcoord;
469 while ((num = *str++) && x < vid.conwidth)
473 s = (num & 15)*0.0625f + (0.5f / 256.0f);
474 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
475 u = 0.0625f - (1.0f / 256.0f);
476 v = 0.0625f - (1.0f / 256.0f);
477 ac[0] = ac[4] = ac[ 8] = ac[12] = cr;
478 ac[1] = ac[5] = ac[ 9] = ac[13] = cg;
479 ac[2] = ac[6] = ac[10] = ac[14] = cb;
480 ac[3] = ac[7] = ac[11] = ac[15] = ca;
481 at[0] = s ;at[1] = t ;
482 at[2] = s+u;at[3] = t ;
483 at[4] = s+u;at[5] = t+v;
484 at[6] = s ;at[7] = t+v;
485 av[0] = x ;av[1] = y ;av[2] = 0;
486 av[4] = x+w;av[1] = y ;av[2] = 0;
487 av[8] = x+w;av[1] = y+h;av[2] = 0;
488 av[0] = x ;av[1] = y+h;av[2] = 0;
493 if (batchcount >= 128)
495 R_Mesh_Draw(batchcount * 4, batchcount * 2, polygonelements);
498 at = varray_texcoord;
504 R_Mesh_Draw(batchcount * 4, batchcount * 2, polygonelements);
507 mesh = (void *)(dq + 1);
508 m.tex[0] = R_GetTexture(mesh->texture);
509 R_Mesh_ResizeCheck(mesh->numvertices);
510 memcpy(varray_vertex, mesh->vertices, sizeof(float[4]) * mesh->numvertices);
511 memcpy(varray_texcoord, mesh->texcoords, sizeof(float[2]) * mesh->numvertices);
512 memcpy(varray_color, mesh->colors, sizeof(float[4]) * mesh->numvertices);
513 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->indices);
519 if (!v_hwgamma.integer)
521 t = v_contrast.value * (float) (1 << v_overbrightbits.integer);
524 m.blendfunc1 = GL_DST_COLOR;
525 m.blendfunc2 = GL_ONE;
526 m.depthdisable = true;
533 varray_color[0] = varray_color[4] = varray_color[ 8] = varray_color[12] = cr;
534 varray_color[1] = varray_color[5] = varray_color[ 9] = varray_color[13] = cr;
535 varray_color[2] = varray_color[6] = varray_color[10] = varray_color[14] = cr;
536 varray_texcoord[0] = 0;varray_texcoord[1] = 0;
537 varray_texcoord[2] = 0;varray_texcoord[3] = 0;
538 varray_texcoord[4] = 0;varray_texcoord[5] = 0;
539 varray_vertex[0] = -5000;varray_vertex[1] = -5000;varray_vertex[2] = 0;
540 varray_vertex[4] = 10000;varray_vertex[1] = -5000;varray_vertex[2] = 0;
541 varray_vertex[8] = -5000;varray_vertex[1] = 10000;varray_vertex[2] = 0;
542 R_Mesh_Draw(3, 1, polygonelements);
548 qglBlendFunc(GL_ZERO, GL_SRC_COLOR);
550 qglBegin(GL_TRIANGLES);
551 num = (int) (t * 255.0f);
552 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
553 qglVertex2f (-5000, -5000);
554 qglVertex2f (10000, -5000);
555 qglVertex2f (-5000, 10000);
559 if (v_brightness.value >= 0.01f)
561 qglBlendFunc (GL_ONE, GL_ONE);
563 num = (int) (v_brightness.value * 255.0f);
564 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
566 qglBegin (GL_TRIANGLES);
567 qglVertex2f (-5000, -5000);
568 qglVertex2f (10000, -5000);
569 qglVertex2f (-5000, 10000);
573 qglEnable(GL_TEXTURE_2D);
577 qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
579 qglEnable (GL_CULL_FACE);
581 qglEnable (GL_DEPTH_TEST);
583 qglDisable (GL_BLEND);
585 qglColor4ub (255, 255, 255, 255);
589 void R_DrawQueue(void)
591 int pos, num, chartexnum, overbright;
592 float x, y, w, h, s, t, u, v;
595 char *str, *currentpic;
596 int batch, batchcount, additive;
598 drawqueuemesh_t *mesh;
600 if (!r_render.integer)
603 qglMatrixMode(GL_PROJECTION);
605 qglOrtho(0, vid.conwidth, vid.conheight, 0, -99999, 99999);
607 qglMatrixMode(GL_MODELVIEW);
610 qglDisable(GL_DEPTH_TEST);
611 qglDisable(GL_CULL_FACE);
613 qglEnable(GL_TEXTURE_2D);
614 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
616 chartexnum = R_GetTexture(char_texture);
619 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
622 qglBindTexture(GL_TEXTURE_2D, 0);
624 qglColor4ub(0,0,0,0);
626 overbright = v_overbrightbits.integer;
629 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
631 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
632 if (dq->flags & DRAWFLAG_ADDITIVE)
642 qglBlendFunc(GL_SRC_ALPHA, GL_ONE);
655 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
658 if (color != dq->color)
661 qglColor4ub((qbyte)(((color >> 24) & 0xFF) >> overbright), (qbyte)(((color >> 16) & 0xFF) >> overbright), (qbyte)(((color >> 8) & 0xFF) >> overbright), (qbyte)(color & 0xFF));
663 if (batch && batchcount > 128)
675 str = (char *)(dq + 1);
678 if (strcmp(str, currentpic))
686 pic = Draw_CachePic(str);
687 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(pic->tex));
696 qglBegin(GL_TRIANGLES);
699 qglTexCoord2f (0, 0);qglVertex2f (x , y );
700 qglTexCoord2f (1, 0);qglVertex2f (x+w, y );
701 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
702 qglTexCoord2f (0, 0);qglVertex2f (x , y );
703 qglTexCoord2f (1, 1);qglVertex2f (x+w, y+h);
704 qglTexCoord2f (0, 1);qglVertex2f (x , y+h);
717 qglBindTexture(GL_TEXTURE_2D, 0);
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);
734 case DRAWQUEUE_STRING:
735 str = (char *)(dq + 1);
736 if (strcmp("conchars", currentpic))
743 currentpic = "conchars";
744 qglBindTexture(GL_TEXTURE_2D, chartexnum);
749 qglBegin(GL_TRIANGLES);
752 while ((num = *str++) && x < vid.conwidth)
756 s = (num & 15)*0.0625f + (0.5f / 256.0f);
757 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
758 u = 0.0625f - (1.0f / 256.0f);
759 v = 0.0625f - (1.0f / 256.0f);
760 qglTexCoord2f (s , t );qglVertex2f (x , y );
761 qglTexCoord2f (s+u, t );qglVertex2f (x+w, y );
762 qglTexCoord2f (s+u, t+v);qglVertex2f (x+w, y+h);
763 qglTexCoord2f (s , t );qglVertex2f (x , y );
764 qglTexCoord2f (s+u, t+v);qglVertex2f (x+w, y+h);
765 qglTexCoord2f (s , t+v);qglVertex2f (x , y+h);
778 mesh = (void *)(dq + 1);
779 qglBindTexture(GL_TEXTURE_2D, R_GetTexture(mesh->texture));
780 qglVertexPointer(3, GL_FLOAT, sizeof(float[4]), mesh->vertices);CHECKGLERROR
781 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), mesh->texcoords);CHECKGLERROR
782 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), mesh->colors);CHECKGLERROR
783 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
784 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
785 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
786 GL_DrawRangeElements(0, mesh->numvertices, mesh->numindices, mesh->indices);
787 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
788 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
789 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
791 // restore color, since it got trashed by using color array
792 qglColor4ub((qbyte)(((color >> 24) & 0xFF) >> overbright), (qbyte)(((color >> 16) & 0xFF) >> overbright), (qbyte)(((color >> 8) & 0xFF) >> overbright), (qbyte)(color & 0xFF));
802 if (!v_hwgamma.integer)
804 qglDisable(GL_TEXTURE_2D);
806 t = v_contrast.value * (float) (1 << v_overbrightbits.integer);
809 qglBlendFunc (GL_DST_COLOR, GL_ONE);
811 qglBegin (GL_TRIANGLES);
814 num = (int) ((t - 1.0f) * 255.0f);
817 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
818 qglVertex2f (-5000, -5000);
819 qglVertex2f (10000, -5000);
820 qglVertex2f (-5000, 10000);
828 qglBlendFunc(GL_ZERO, GL_SRC_COLOR);
830 qglBegin(GL_TRIANGLES);
831 num = (int) (t * 255.0f);
832 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
833 qglVertex2f (-5000, -5000);
834 qglVertex2f (10000, -5000);
835 qglVertex2f (-5000, 10000);
839 if (v_brightness.value >= 0.01f)
841 qglBlendFunc (GL_ONE, GL_ONE);
843 num = (int) (v_brightness.value * 255.0f);
844 qglColor4ub ((qbyte) num, (qbyte) num, (qbyte) num, 255);
846 qglBegin (GL_TRIANGLES);
847 qglVertex2f (-5000, -5000);
848 qglVertex2f (10000, -5000);
849 qglVertex2f (-5000, 10000);
853 qglEnable(GL_TEXTURE_2D);
857 qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
859 qglEnable (GL_CULL_FACE);
861 qglEnable (GL_DEPTH_TEST);
863 qglDisable (GL_BLEND);
865 qglColor4ub (255, 255, 255, 255);