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.
28 static rtexture_t *char_texture;
30 //=============================================================================
31 /* Support Routines */
33 #define FONT_FILESIZE 13468
34 #define MAX_CACHED_PICS 256
35 #define CACHEPICHASHSIZE 256
36 static cachepic_t *cachepichash[CACHEPICHASHSIZE];
37 static cachepic_t cachepics[MAX_CACHED_PICS];
38 static int numcachepics;
40 static rtexturepool_t *drawtexturepool;
42 static qbyte concharimage[FONT_FILESIZE] =
47 extern qbyte *LoadTGA (qbyte *f, int matchwidth, int matchheight);
49 static rtexture_t *draw_generateconchars(void)
52 qbyte buffer[65536][4], *data = NULL;
55 fs_filesize = FONT_FILESIZE;
56 data = LoadTGA (concharimage, 256, 256);
59 for (i = 0;i < 8192;i++)
61 random = lhrandom (0.0,1.0);
62 buffer[i][0] = 83 + (qbyte)(random * 64);
63 buffer[i][1] = 71 + (qbyte)(random * 32);
64 buffer[i][2] = 23 + (qbyte)(random * 16);
65 buffer[i][3] = data[i*4+0];
68 for (i = 8192;i < 32768;i++)
70 random = lhrandom (0.0,1.0);
71 buffer[i][0] = 95 + (qbyte)(random * 64);
72 buffer[i][1] = 95 + (qbyte)(random * 64);
73 buffer[i][2] = 95 + (qbyte)(random * 64);
74 buffer[i][3] = data[i*4+0];
77 for (i = 32768;i < 40960;i++)
79 random = lhrandom (0.0,1.0);
80 buffer[i][0] = 83 + (qbyte)(random * 64);
81 buffer[i][1] = 71 + (qbyte)(random * 32);
82 buffer[i][2] = 23 + (qbyte)(random * 16);
83 buffer[i][3] = data[i*4+0];
86 for (i = 40960;i < 65536;i++)
88 random = lhrandom (0.0,1.0);
89 buffer[i][0] = 96 + (qbyte)(random * 64);
90 buffer[i][1] = 43 + (qbyte)(random * 32);
91 buffer[i][2] = 27 + (qbyte)(random * 32);
92 buffer[i][3] = data[i*4+0];
96 Image_WriteTGARGBA ("gfx/generated_conchars.tga", 256, 256, &buffer[0][0]);
100 return R_LoadTexture2D(drawtexturepool, "conchars", 256, 256, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
103 static qbyte pointerimage[256] =
123 static rtexture_t *draw_generatemousepointer(void)
126 qbyte buffer[256][4];
127 for (i = 0;i < 256;i++)
129 if (pointerimage[i] == '.')
138 buffer[i][0] = (pointerimage[i] - '0') * 16;
139 buffer[i][1] = (pointerimage[i] - '0') * 16;
140 buffer[i][2] = (pointerimage[i] - '0') * 16;
144 return R_LoadTexture2D(drawtexturepool, "mousepointer", 16, 16, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
147 // must match NUMCROSSHAIRS in r_crosshairs.c
148 #define NUMCROSSHAIRS 6
150 static qbyte *crosshairtexdata[NUMCROSSHAIRS] =
255 static rtexture_t *draw_generatecrosshair(int num)
259 qbyte data[16*16][4];
260 in = crosshairtexdata[num];
261 for (i = 0;i < 16*16;i++)
275 data[i][3] = (qbyte) ((int) (in[i] - '0') * 255 / 7);
278 return R_LoadTexture2D(drawtexturepool, va("crosshair%i", num), 16, 16, &data[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
281 static rtexture_t *draw_generateditherpattern(void)
286 for (y = 0;y < 8;y++)
288 for (x = 0;x < 8;x++)
290 data[(y*8+x)*4+0] = data[(y*8+x)*4+1] = data[(y*8+x)*4+2] = ((x^y) & 4) ? 255 : 0;
291 data[(y*8+x)*4+3] = 255;
294 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 8, 8, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
297 memset(data, 255, sizeof(data));
298 data[0] = data[1] = data[2] = data[12] = data[13] = data[14] = 0;
299 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 2, 2, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
308 // FIXME: move this to client somehow
309 cachepic_t *Draw_CachePic (const char *path, qboolean persistent)
316 if (!strncmp(CLVIDEOPREFIX, path, sizeof(CLVIDEOPREFIX) - 1))
321 video = CL_GetVideo(path);
326 crc = CRC_Block(path, strlen(path));
327 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
328 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
329 if (!strcmp (path, pic->name))
332 if (numcachepics == MAX_CACHED_PICS)
334 Con_Printf ("Draw_CachePic: numcachepics == MAX_CACHED_PICS");
335 // FIXME: support NULL in callers?
336 return cachepics; // return the first one
338 pic = cachepics + (numcachepics++);
339 strlcpy (pic->name, path, sizeof(pic->name));
341 pic->chain = cachepichash[hashkey];
342 cachepichash[hashkey] = pic;
346 flags |= TEXF_PRECACHE;
347 if (!strcmp(path, "gfx/colorcontrol/ditherpattern.tga"))
350 // load the pic from disk
351 pic->tex = loadtextureimage(drawtexturepool, path, 0, 0, false, flags);
352 if (pic->tex == NULL && !strncmp(path, "gfx/", 4))
354 // compatibility with older versions
355 pic->tex = loadtextureimage(drawtexturepool, path + 4, 0, 0, false, flags);
356 // failed to find gfx/whatever.tga or similar, try the wad
357 if (pic->tex == NULL && (p = W_GetLumpName (path + 4)))
359 if (!strcmp(path, "gfx/conchars"))
362 // conchars is a raw image and with the wrong transparent color
364 for (i = 0;i < 128 * 128;i++)
367 pic->tex = R_LoadTexture2D(drawtexturepool, path, 128, 128, pix, TEXTYPE_PALETTE, flags, palette_complete);
370 pic->tex = R_LoadTexture2D(drawtexturepool, path, p->width, p->height, p->data, TEXTYPE_PALETTE, flags, palette_complete);
374 if (pic->tex == NULL && !strcmp(path, "gfx/conchars"))
375 pic->tex = draw_generateconchars();
376 if (pic->tex == NULL && !strcmp(path, "ui/mousepointer.tga"))
377 pic->tex = draw_generatemousepointer();
378 if (pic->tex == NULL && !strcmp(path, "gfx/prydoncursor001.tga"))
379 pic->tex = draw_generatemousepointer();
380 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair1.tga"))
381 pic->tex = draw_generatecrosshair(0);
382 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair2.tga"))
383 pic->tex = draw_generatecrosshair(1);
384 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair3.tga"))
385 pic->tex = draw_generatecrosshair(2);
386 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair4.tga"))
387 pic->tex = draw_generatecrosshair(3);
388 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair5.tga"))
389 pic->tex = draw_generatecrosshair(4);
390 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair6.tga"))
391 pic->tex = draw_generatecrosshair(5);
392 if (pic->tex == NULL && !strcmp(path, "gfx/colorcontrol/ditherpattern.tga"))
393 pic->tex = draw_generateditherpattern();
394 if (pic->tex == NULL)
396 Con_Printf("Draw_CachePic: failed to load %s\n", path);
397 pic->tex = r_texture_notexture;
400 pic->width = R_TextureWidth(pic->tex);
401 pic->height = R_TextureHeight(pic->tex);
405 cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, qbyte *pixels)
410 crc = CRC_Block(picname, strlen(picname));
411 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
412 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
413 if (!strcmp (picname, pic->name))
418 if (pic->tex && pic->width == width && pic->height == height)
420 R_UpdateTexture(pic->tex, pixels);
428 if (numcachepics == MAX_CACHED_PICS)
430 Con_Printf ("Draw_NewPic: numcachepics == MAX_CACHED_PICS");
431 // FIXME: support NULL in callers?
432 return cachepics; // return the first one
434 pic = cachepics + (numcachepics++);
435 strcpy (pic->name, picname);
437 pic->chain = cachepichash[hashkey];
438 cachepichash[hashkey] = pic;
443 pic->height = height;
445 R_FreeTexture(pic->tex);
446 pic->tex = R_LoadTexture2D(drawtexturepool, picname, width, height, pixels, TEXTYPE_RGBA, alpha ? TEXF_ALPHA : 0, NULL);
450 void Draw_FreePic(const char *picname)
455 // this doesn't really free the pic, but does free it's texture
456 crc = CRC_Block(picname, strlen(picname));
457 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
458 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
460 if (!strcmp (picname, pic->name) && pic->tex)
462 R_FreeTexture(pic->tex);
475 static void gl_draw_start(void)
477 drawtexturepool = R_AllocTexturePool();
480 memset(cachepichash, 0, sizeof(cachepichash));
482 char_texture = Draw_CachePic("gfx/conchars", true)->tex;
485 static void gl_draw_shutdown(void)
487 R_FreeTexturePool(&drawtexturepool);
490 memset(cachepichash, 0, sizeof(cachepichash));
493 static void gl_draw_newmap(void)
497 void GL_Draw_Init (void)
500 memset(cachepichash, 0, sizeof(cachepichash));
502 R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap);
505 float blendvertex3f[9] = {-5000, -5000, 10, 10000, -5000, 10, -5000, 10000, 10};
507 int quadelements[768];
508 void R_DrawQueue(void)
510 int pos, num, chartexnum, texnum, batch;
511 float x, y, w, h, s, t, u, v, *av, *at, c[4];
517 drawqueuemesh_t *mesh;
520 if (!r_render.integer)
523 if (!quadelements[1])
525 // elements for rendering a series of quads as triangles
526 for (batch = 0, pos = 0, num = 0;batch < 128;batch++, num += 4)
528 quadelements[pos++] = num;
529 quadelements[pos++] = num + 1;
530 quadelements[pos++] = num + 2;
531 quadelements[pos++] = num;
532 quadelements[pos++] = num + 2;
533 quadelements[pos++] = num + 3;
537 r_view_width = bound(0, r_refdef.width, vid.width);
538 r_view_height = bound(0, r_refdef.height, vid.height);
540 r_view_x = bound(0, r_refdef.x, vid.width - r_refdef.width);
541 r_view_y = bound(0, r_refdef.y, vid.height - r_refdef.height);
543 r_view_fov_x = bound(0.1, r_refdef.fov_x, 170);
544 r_view_fov_y = bound(0.1, r_refdef.fov_y, 170);
545 r_view_matrix = r_refdef.viewentitymatrix;
546 GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
548 qglViewport(r_view_x, vid.height - (r_view_y + r_view_height), r_view_width, r_view_height);
549 GL_SetupView_Mode_Ortho(0, 0, vid_conwidth.integer, vid_conheight.integer, -10, 100);
550 qglDepthFunc(GL_LEQUAL);
551 R_Mesh_Matrix(&r_identitymatrix);
553 chartexnum = R_GetTexture(char_texture);
555 memset(&m, 0, sizeof(m));
564 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
566 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
569 if(dq->flags == DRAWFLAG_ADDITIVE)
570 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
571 else if(dq->flags == DRAWFLAG_MODULATE)
572 GL_BlendFunc(GL_DST_COLOR, GL_ZERO);
573 else if(dq->flags == DRAWFLAG_2XMODULATE)
574 GL_BlendFunc(GL_DST_COLOR,GL_SRC_COLOR);
576 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
581 c[0] = (float) ((color >> 24) & 0xFF) * (1.0f / 255.0f);
582 c[1] = (float) ((color >> 16) & 0xFF) * (1.0f / 255.0f);
583 c[2] = (float) ((color >> 8) & 0xFF) * (1.0f / 255.0f);
584 c[3] = (float) ( color & 0xFF) * (1.0f / 255.0f);
592 case DRAWQUEUE_STRING:
593 GL_Color(c[0], c[1], c[2], c[3]);
594 str = (char *)(dq + 1);
596 m.pointer_vertex = varray_vertex3f;
597 m.pointer_color = NULL;
598 m.pointer_texcoord[0] = varray_texcoord2f[0];
599 m.tex[0] = chartexnum;
601 at = varray_texcoord2f[0];
602 av = varray_vertex3f;
603 while ((num = *str++) && x < vid_conwidth.integer)
607 s = (num & 15)*0.0625f + (0.5f / 256.0f);
608 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
609 u = 0.0625f - (1.0f / 256.0f);
610 v = 0.0625f - (1.0f / 256.0f);
611 at[ 0] = s ;at[ 1] = t ;
612 at[ 2] = s+u;at[ 3] = t ;
613 at[ 4] = s+u;at[ 5] = t+v;
614 at[ 6] = s ;at[ 7] = t+v;
615 av[ 0] = x ;av[ 1] = y ;av[ 2] = 10;
616 av[ 3] = x+w;av[ 4] = y ;av[ 5] = 10;
617 av[ 6] = x+w;av[ 7] = y+h;av[ 8] = 10;
618 av[ 9] = x ;av[10] = y+h;av[11] = 10;
622 if (batchcount >= 128)
624 GL_LockArrays(0, batchcount * 4);
625 R_Mesh_Draw(0, batchcount * 4, batchcount * 2, quadelements);
628 at = varray_texcoord2f[0];
629 av = varray_vertex3f;
636 GL_LockArrays(0, batchcount * 4);
637 R_Mesh_Draw(0, batchcount * 4, batchcount * 2, quadelements);
642 mesh = (void *)(dq + 1);
643 m.pointer_vertex = mesh->data_vertex3f;
644 m.pointer_color = mesh->data_color4f;
645 m.pointer_texcoord[0] = mesh->data_texcoord2f;
646 m.tex[0] = R_GetTexture(mesh->texture);
648 m.pointer_texcoord[0] = NULL;
650 GL_LockArrays(0, mesh->num_vertices);
651 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
654 case DRAWQUEUE_SETCLIP:
656 // We have to convert the con coords into real coords
657 int x , y, width, height;
658 x = dq->x * ((float)vid.width / vid_conwidth.integer);
659 // OGL uses top to bottom
660 y = dq->y * ((float) vid.height / vid_conheight.integer);
661 width = dq->scalex * ((float)vid.width / vid_conwidth.integer);
662 height = dq->scaley * ((float)vid.height / vid_conheight.integer);
664 GL_Scissor(x, y, width, height);
666 GL_ScissorTest(true);
669 case DRAWQUEUE_RESETCLIP:
670 GL_ScissorTest(false);
675 if (!vid_usinghwgamma)
677 // all the blends ignore depth
678 memset(&m, 0, sizeof(m));
679 m.pointer_vertex = blendvertex3f;
683 if (v_color_enable.integer)
685 c[0] = v_color_white_r.value;
686 c[1] = v_color_white_g.value;
687 c[2] = v_color_white_b.value;
690 c[0] = c[1] = c[2] = v_contrast.value;
691 if (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
693 GL_BlendFunc(GL_DST_COLOR, GL_ONE);
694 while (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
696 GL_Color(bound(0, c[0] - 1, 1), bound(0, c[1] - 1, 1), bound(0, c[2] - 1, 1), 1);
697 R_Mesh_Draw(0, 3, 1, polygonelements);
698 VectorScale(c, 0.5, c);
701 if (v_color_enable.integer)
703 c[0] = v_color_black_r.value;
704 c[1] = v_color_black_g.value;
705 c[2] = v_color_black_b.value;
708 c[0] = c[1] = c[2] = v_brightness.value;
709 if (c[0] >= 0.01f || c[1] >= 0.01f || c[2] >= 0.01f)
711 GL_BlendFunc(GL_ONE, GL_ONE);
712 GL_Color(c[0], c[1], c[2], 1);
713 R_Mesh_Draw(0, 3, 1, polygonelements);