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;
29 cachepic_t *r_crosshairs[NUMCROSSHAIRS];
31 //=============================================================================
32 /* Support Routines */
34 #define FONT_FILESIZE 13468
35 #define MAX_CACHED_PICS 1024
36 #define CACHEPICHASHSIZE 256
37 static cachepic_t *cachepichash[CACHEPICHASHSIZE];
38 static cachepic_t cachepics[MAX_CACHED_PICS];
39 static int numcachepics;
41 static rtexturepool_t *drawtexturepool;
43 static unsigned char concharimage[FONT_FILESIZE] =
48 static rtexture_t *draw_generateconchars(void)
51 unsigned char buffer[65536][4], *data = NULL;
54 data = LoadTGA (concharimage, FONT_FILESIZE, 256, 256);
56 for (i = 0;i < 8192;i++)
58 random = lhrandom (0.0,1.0);
59 buffer[i][0] = 83 + (unsigned char)(random * 64);
60 buffer[i][1] = 71 + (unsigned char)(random * 32);
61 buffer[i][2] = 23 + (unsigned char)(random * 16);
62 buffer[i][3] = data[i*4+0];
65 for (i = 8192;i < 32768;i++)
67 random = lhrandom (0.0,1.0);
68 buffer[i][0] = 95 + (unsigned char)(random * 64);
69 buffer[i][1] = 95 + (unsigned char)(random * 64);
70 buffer[i][2] = 95 + (unsigned char)(random * 64);
71 buffer[i][3] = data[i*4+0];
74 for (i = 32768;i < 40960;i++)
76 random = lhrandom (0.0,1.0);
77 buffer[i][0] = 83 + (unsigned char)(random * 64);
78 buffer[i][1] = 71 + (unsigned char)(random * 32);
79 buffer[i][2] = 23 + (unsigned char)(random * 16);
80 buffer[i][3] = data[i*4+0];
83 for (i = 40960;i < 65536;i++)
85 random = lhrandom (0.0,1.0);
86 buffer[i][0] = 96 + (unsigned char)(random * 64);
87 buffer[i][1] = 43 + (unsigned char)(random * 32);
88 buffer[i][2] = 27 + (unsigned char)(random * 32);
89 buffer[i][3] = data[i*4+0];
93 Image_WriteTGARGBA ("gfx/generated_conchars.tga", 256, 256, &buffer[0][0]);
97 return R_LoadTexture2D(drawtexturepool, "conchars", 256, 256, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
100 static char *pointerimage =
119 static rtexture_t *draw_generatemousepointer(void)
122 unsigned char buffer[256][4];
123 for (i = 0;i < 256;i++)
125 if (pointerimage[i] == '.')
134 buffer[i][0] = (pointerimage[i] - '0') * 16;
135 buffer[i][1] = (pointerimage[i] - '0') * 16;
136 buffer[i][2] = (pointerimage[i] - '0') * 16;
140 return R_LoadTexture2D(drawtexturepool, "mousepointer", 16, 16, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
143 static char *crosshairtexdata[NUMCROSSHAIRS] =
248 static rtexture_t *draw_generatecrosshair(int num)
252 unsigned char data[16*16][4];
253 in = crosshairtexdata[num];
254 for (i = 0;i < 16*16;i++)
268 data[i][3] = (unsigned char) ((int) (in[i] - '0') * 255 / 7);
271 return R_LoadTexture2D(drawtexturepool, va("crosshair%i", num), 16, 16, &data[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
274 static rtexture_t *draw_generateditherpattern(void)
278 unsigned char data[8*8*4];
279 for (y = 0;y < 8;y++)
281 for (x = 0;x < 8;x++)
283 data[(y*8+x)*4+0] = data[(y*8+x)*4+1] = data[(y*8+x)*4+2] = ((x^y) & 4) ? 255 : 0;
284 data[(y*8+x)*4+3] = 255;
287 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 8, 8, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
289 unsigned char data[16];
290 memset(data, 255, sizeof(data));
291 data[0] = data[1] = data[2] = data[12] = data[13] = data[14] = 0;
292 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 2, 2, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
301 // FIXME: move this to client somehow
302 cachepic_t *Draw_CachePic (const char *path, qboolean persistent)
309 if (!strncmp(CLVIDEOPREFIX, path, sizeof(CLVIDEOPREFIX) - 1))
313 video = CL_GetVideoByName(path);
318 crc = CRC_Block((unsigned char *)path, strlen(path));
319 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
320 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
321 if (!strcmp (path, pic->name))
324 if (numcachepics == MAX_CACHED_PICS)
326 Con_Printf ("Draw_CachePic: numcachepics == MAX_CACHED_PICS\n");
327 // FIXME: support NULL in callers?
328 return cachepics; // return the first one
330 pic = cachepics + (numcachepics++);
331 strlcpy (pic->name, path, sizeof(pic->name));
333 pic->chain = cachepichash[hashkey];
334 cachepichash[hashkey] = pic;
338 flags |= TEXF_PRECACHE;
339 if (!strcmp(path, "gfx/colorcontrol/ditherpattern"))
342 // load the pic from disk
343 pic->tex = loadtextureimage(drawtexturepool, path, 0, 0, false, flags);
344 if (pic->tex == NULL && !strncmp(path, "gfx/", 4))
346 // compatibility with older versions
347 pic->tex = loadtextureimage(drawtexturepool, path + 4, 0, 0, false, flags);
348 // failed to find gfx/whatever.tga or similar, try the wad
349 if (pic->tex == NULL && (p = (qpic_t *)W_GetLumpName (path + 4)))
351 if (!strcmp(path, "gfx/conchars"))
353 // conchars is a raw image and with color 0 as transparent instead of 255
354 pic->tex = R_LoadTexture2D(drawtexturepool, path, 128, 128, (unsigned char *)p, TEXTYPE_PALETTE, flags, palette_font);
357 pic->tex = R_LoadTexture2D(drawtexturepool, path, p->width, p->height, p->data, TEXTYPE_PALETTE, flags, palette_transparent);
361 if (pic->tex == NULL && !strcmp(path, "gfx/conchars"))
362 pic->tex = draw_generateconchars();
363 if (pic->tex == NULL && !strcmp(path, "ui/mousepointer"))
364 pic->tex = draw_generatemousepointer();
365 if (pic->tex == NULL && !strcmp(path, "gfx/prydoncursor001"))
366 pic->tex = draw_generatemousepointer();
367 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair1"))
368 pic->tex = draw_generatecrosshair(0);
369 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair2"))
370 pic->tex = draw_generatecrosshair(1);
371 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair3"))
372 pic->tex = draw_generatecrosshair(2);
373 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair4"))
374 pic->tex = draw_generatecrosshair(3);
375 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair5"))
376 pic->tex = draw_generatecrosshair(4);
377 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair6"))
378 pic->tex = draw_generatecrosshair(5);
379 if (pic->tex == NULL && !strcmp(path, "gfx/colorcontrol/ditherpattern"))
380 pic->tex = draw_generateditherpattern();
381 if (pic->tex == NULL)
383 Con_Printf("Draw_CachePic: failed to load %s\n", path);
384 pic->tex = r_texture_notexture;
387 pic->width = R_TextureWidth(pic->tex);
388 pic->height = R_TextureHeight(pic->tex);
392 cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, unsigned char *pixels)
397 crc = CRC_Block((unsigned char *)picname, strlen(picname));
398 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
399 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
400 if (!strcmp (picname, pic->name))
405 if (pic->tex && pic->width == width && pic->height == height)
407 R_UpdateTexture(pic->tex, pixels);
415 if (numcachepics == MAX_CACHED_PICS)
417 Con_Printf ("Draw_NewPic: numcachepics == MAX_CACHED_PICS\n");
418 // FIXME: support NULL in callers?
419 return cachepics; // return the first one
421 pic = cachepics + (numcachepics++);
422 strcpy (pic->name, picname);
424 pic->chain = cachepichash[hashkey];
425 cachepichash[hashkey] = pic;
430 pic->height = height;
432 R_FreeTexture(pic->tex);
433 pic->tex = R_LoadTexture2D(drawtexturepool, picname, width, height, pixels, TEXTYPE_RGBA, alpha ? TEXF_ALPHA : 0, NULL);
437 void Draw_FreePic(const char *picname)
442 // this doesn't really free the pic, but does free it's texture
443 crc = CRC_Block((unsigned char *)picname, strlen(picname));
444 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
445 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
447 if (!strcmp (picname, pic->name) && pic->tex)
449 R_FreeTexture(pic->tex);
462 static void gl_draw_start(void)
465 drawtexturepool = R_AllocTexturePool();
468 memset(cachepichash, 0, sizeof(cachepichash));
470 char_texture = Draw_CachePic("gfx/conchars", true)->tex;
471 for (i = 0;i < NUMCROSSHAIRS;i++)
472 r_crosshairs[i] = Draw_CachePic(va("gfx/crosshair%i", i), false);
475 static void gl_draw_shutdown(void)
477 R_FreeTexturePool(&drawtexturepool);
480 memset(cachepichash, 0, sizeof(cachepichash));
483 static void gl_draw_newmap(void)
487 void GL_Draw_Init (void)
490 memset(cachepichash, 0, sizeof(cachepichash));
492 R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap);
495 float blendvertex3f[9] = {-5000, -5000, 10, 10000, -5000, 10, -5000, 10000, 10};
497 int quadelements[768];
498 void R_DrawQueue(void)
500 int pos, num, chartexnum, texnum, batch;
501 float x, y, w, h, s, t, u, v, *av, *at, c[4];
507 drawqueuemesh_t *mesh;
510 if (!r_render.integer)
513 if (!quadelements[1])
515 // elements for rendering a series of quads as triangles
516 for (batch = 0, pos = 0, num = 0;batch < 128;batch++, num += 4)
518 quadelements[pos++] = num;
519 quadelements[pos++] = num + 1;
520 quadelements[pos++] = num + 2;
521 quadelements[pos++] = num;
522 quadelements[pos++] = num + 2;
523 quadelements[pos++] = num + 3;
527 r_view_width = bound(0, r_refdef.width, vid.width);
528 r_view_height = bound(0, r_refdef.height, vid.height);
530 r_view_x = bound(0, r_refdef.x, vid.width - r_refdef.width);
531 r_view_y = bound(0, r_refdef.y, vid.height - r_refdef.height);
533 r_view_matrix = r_refdef.viewentitymatrix;
534 GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
536 qglViewport(r_view_x, vid.height - (r_view_y + r_view_height), r_view_width, r_view_height);
537 GL_SetupView_Mode_Ortho(0, 0, vid_conwidth.integer, vid_conheight.integer, -10, 100);
538 qglDepthFunc(GL_LEQUAL);
539 R_Mesh_Matrix(&identitymatrix);
541 chartexnum = R_GetTexture(char_texture);
543 memset(&m, 0, sizeof(m));
552 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
554 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
557 if(dq->flags == DRAWFLAG_ADDITIVE)
558 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
559 else if(dq->flags == DRAWFLAG_MODULATE)
560 GL_BlendFunc(GL_DST_COLOR, GL_ZERO);
561 else if(dq->flags == DRAWFLAG_2XMODULATE)
562 GL_BlendFunc(GL_DST_COLOR,GL_SRC_COLOR);
564 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
569 c[0] = (float) ((color >> 24) & 0xFF) * (1.0f / 255.0f);
570 c[1] = (float) ((color >> 16) & 0xFF) * (1.0f / 255.0f);
571 c[2] = (float) ((color >> 8) & 0xFF) * (1.0f / 255.0f);
572 c[3] = (float) ( color & 0xFF) * (1.0f / 255.0f);
580 case DRAWQUEUE_STRING:
581 GL_Color(c[0], c[1], c[2], c[3]);
582 str = (char *)(dq + 1);
584 m.pointer_vertex = varray_vertex3f;
585 m.pointer_color = NULL;
586 m.pointer_texcoord[0] = varray_texcoord2f[0];
587 m.tex[0] = chartexnum;
589 at = varray_texcoord2f[0];
590 av = varray_vertex3f;
591 while ((num = *str++) && x < vid_conwidth.integer)
595 s = (num & 15)*0.0625f + (0.5f / 256.0f);
596 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
597 u = 0.0625f - (1.0f / 256.0f);
598 v = 0.0625f - (1.0f / 256.0f);
599 at[ 0] = s ;at[ 1] = t ;
600 at[ 2] = s+u;at[ 3] = t ;
601 at[ 4] = s+u;at[ 5] = t+v;
602 at[ 6] = s ;at[ 7] = t+v;
603 av[ 0] = x ;av[ 1] = y ;av[ 2] = 10;
604 av[ 3] = x+w;av[ 4] = y ;av[ 5] = 10;
605 av[ 6] = x+w;av[ 7] = y+h;av[ 8] = 10;
606 av[ 9] = x ;av[10] = y+h;av[11] = 10;
610 if (batchcount >= 128)
612 GL_LockArrays(0, batchcount * 4);
613 R_Mesh_Draw(0, batchcount * 4, batchcount * 2, quadelements);
616 at = varray_texcoord2f[0];
617 av = varray_vertex3f;
624 GL_LockArrays(0, batchcount * 4);
625 R_Mesh_Draw(0, batchcount * 4, batchcount * 2, quadelements);
630 mesh = (drawqueuemesh_t *)(dq + 1);
631 m.pointer_vertex = mesh->data_vertex3f;
632 m.pointer_color = mesh->data_color4f;
633 m.pointer_texcoord[0] = mesh->data_texcoord2f;
634 m.tex[0] = R_GetTexture(mesh->texture);
636 m.pointer_texcoord[0] = NULL;
638 GL_LockArrays(0, mesh->num_vertices);
639 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
642 case DRAWQUEUE_SETCLIP:
644 // We have to convert the con coords into real coords
645 int x , y, width, height;
646 x = dq->x * ((float)vid.width / vid_conwidth.integer);
647 // OGL uses top to bottom
648 y = dq->y * ((float) vid.height / vid_conheight.integer);
649 width = dq->scalex * ((float)vid.width / vid_conwidth.integer);
650 height = dq->scaley * ((float)vid.height / vid_conheight.integer);
652 GL_Scissor(x, y, width, height);
654 GL_ScissorTest(true);
657 case DRAWQUEUE_RESETCLIP:
658 GL_ScissorTest(false);
660 case DRAWQUEUE_LINEWIDTH:
663 case DRAWQUEUE_LINES:
664 mesh = (drawqueuemesh_t *)(dq + 1);
665 GL_Color(c[0], c[1], c[2], c[3]);
666 qglBegin(GL_LINE_LOOP);
667 for (num = 0;num < mesh->num_vertices;num++)
668 qglVertex2f(mesh->data_vertex3f[num*3+0], mesh->data_vertex3f[num*3+1]);
674 if (!vid_usinghwgamma)
676 // all the blends ignore depth
677 memset(&m, 0, sizeof(m));
678 m.pointer_vertex = blendvertex3f;
682 if (v_color_enable.integer)
684 c[0] = v_color_white_r.value;
685 c[1] = v_color_white_g.value;
686 c[2] = v_color_white_b.value;
689 c[0] = c[1] = c[2] = v_contrast.value;
690 if (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
692 GL_BlendFunc(GL_DST_COLOR, GL_ONE);
693 while (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
695 GL_Color(bound(0, c[0] - 1, 1), bound(0, c[1] - 1, 1), bound(0, c[2] - 1, 1), 1);
696 R_Mesh_Draw(0, 3, 1, polygonelements);
697 VectorScale(c, 0.5, c);
700 if (v_color_enable.integer)
702 c[0] = v_color_black_r.value;
703 c[1] = v_color_black_g.value;
704 c[2] = v_color_black_b.value;
707 c[0] = c[1] = c[2] = v_brightness.value;
708 if (c[0] >= 0.01f || c[1] >= 0.01f || c[2] >= 0.01f)
710 GL_BlendFunc(GL_ONE, GL_ONE);
711 GL_Color(c[0], c[1], c[2], 1);
712 R_Mesh_Draw(0, 3, 1, polygonelements);