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 MAX_CACHED_PICS 256
34 #define CACHEPICHASHSIZE 256
35 static cachepic_t *cachepichash[CACHEPICHASHSIZE];
36 static cachepic_t cachepics[MAX_CACHED_PICS];
37 static int numcachepics;
39 static rtexturepool_t *drawtexturepool;
41 static qbyte concharimage[13396] =
46 extern qbyte *LoadTGA (qbyte *f, int matchwidth, int matchheight);
48 static rtexture_t *draw_generateconchars(void)
51 qbyte buffer[65536][4], *data = NULL;
55 data = LoadTGA (concharimage, 256, 256);
58 for (i = 0;i < 8192;i++)
60 random = lhrandom (0.0,1.0);
61 buffer[i][0] = 83 + (qbyte)(random * 64);
62 buffer[i][1] = 71 + (qbyte)(random * 32);
63 buffer[i][2] = 23 + (qbyte)(random * 16);
64 buffer[i][3] = data[i*4+0];
67 for (i = 8192;i < 32768;i++)
69 random = lhrandom (0.0,1.0);
70 buffer[i][0] = 95 + (qbyte)(random * 64);
71 buffer[i][1] = 95 + (qbyte)(random * 64);
72 buffer[i][2] = 95 + (qbyte)(random * 64);
73 buffer[i][3] = data[i*4+0];
76 for (i = 32768;i < 40960;i++)
78 random = lhrandom (0.0,1.0);
79 buffer[i][0] = 83 + (qbyte)(random * 64);
80 buffer[i][1] = 71 + (qbyte)(random * 32);
81 buffer[i][2] = 23 + (qbyte)(random * 16);
82 buffer[i][3] = data[i*4+0];
85 for (i = 40960;i < 65536;i++)
87 random = lhrandom (0.0,1.0);
88 buffer[i][0] = 96 + (qbyte)(random * 64);
89 buffer[i][1] = 43 + (qbyte)(random * 32);
90 buffer[i][2] = 27 + (qbyte)(random * 32);
91 buffer[i][3] = data[i*4+0];
95 return R_LoadTexture2D(drawtexturepool, "conchars", 256, 256, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
98 static qbyte pointerimage[256] =
118 static rtexture_t *draw_generatemousepointer(void)
121 qbyte buffer[256][4];
122 for (i = 0;i < 256;i++)
124 if (pointerimage[i] == '.')
133 buffer[i][0] = (pointerimage[i] - '0') * 16;
134 buffer[i][1] = (pointerimage[i] - '0') * 16;
135 buffer[i][2] = (pointerimage[i] - '0') * 16;
139 return R_LoadTexture2D(drawtexturepool, "mousepointer", 16, 16, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
142 // must match NUMCROSSHAIRS in r_crosshairs.c
143 #define NUMCROSSHAIRS 5
145 static qbyte *crosshairtexdata[NUMCROSSHAIRS] =
233 static rtexture_t *draw_generatecrosshair(int num)
237 qbyte data[16*16][4];
238 in = crosshairtexdata[num];
239 for (i = 0;i < 16*16;i++)
253 data[i][3] = (qbyte) ((int) (in[i] - '0') * 255 / 7);
256 return R_LoadTexture2D(drawtexturepool, va("crosshair%i", num), 16, 16, &data[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
259 static rtexture_t *draw_generateditherpattern(void)
264 for (y = 0;y < 8;y++)
266 for (x = 0;x < 8;x++)
268 data[(y*8+x)*4+0] = data[(y*8+x)*4+1] = data[(y*8+x)*4+2] = ((x^y) & 4) ? 255 : 0;
269 data[(y*8+x)*4+3] = 255;
272 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 8, 8, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
275 memset(data, 255, sizeof(data));
276 data[0] = data[1] = data[2] = data[12] = data[13] = data[14] = 0;
277 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 2, 2, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
286 // FIXME: move this to client somehow
287 cachepic_t *Draw_CachePic (const char *path, qboolean persistent)
294 if (!strncmp(CLVIDEOPREFIX, path, sizeof(CLVIDEOPREFIX) - 1)) {
297 video = CL_GetVideo(path);
303 persistentflag = TEXF_PRECACHE;
308 crc = CRC_Block(path, strlen(path));
309 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
310 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
311 if (!strcmp (path, pic->name))
314 if (numcachepics == MAX_CACHED_PICS)
315 Sys_Error ("numcachepics == MAX_CACHED_PICS");
316 pic = cachepics + (numcachepics++);
317 strlcpy (pic->name, path, sizeof(pic->name));
319 pic->chain = cachepichash[hashkey];
320 cachepichash[hashkey] = pic;
322 // load the pic from disk
323 pic->tex = loadtextureimage(drawtexturepool, path, 0, 0, false, TEXF_ALPHA | persistentflag);
324 if (pic->tex == NULL && !strncmp(path, "gfx/", 4))
326 // compatibility with older versions
327 pic->tex = loadtextureimage(drawtexturepool, path + 4, 0, 0, false, TEXF_ALPHA | persistentflag);
328 // failed to find gfx/whatever.tga or similar, try the wad
329 if (pic->tex == NULL && (p = W_GetLumpName (path + 4)))
331 if (!strcmp(path, "gfx/conchars"))
334 // conchars is a raw image and with the wrong transparent color
336 for (i = 0;i < 128 * 128;i++)
339 pic->tex = R_LoadTexture2D(drawtexturepool, path, 128, 128, pix, TEXTYPE_PALETTE, TEXF_ALPHA | persistentflag, palette_complete);
342 pic->tex = R_LoadTexture2D(drawtexturepool, path, p->width, p->height, p->data, TEXTYPE_PALETTE, TEXF_ALPHA | persistentflag, palette_complete);
346 if (pic->tex == NULL && !strcmp(path, "gfx/conchars"))
347 pic->tex = draw_generateconchars();
348 if (pic->tex == NULL && !strcmp(path, "ui/mousepointer.tga"))
349 pic->tex = draw_generatemousepointer();
350 if (pic->tex == NULL && !strcmp(path, "gfx/prydoncursor001.tga"))
351 pic->tex = draw_generatemousepointer();
352 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair1.tga"))
353 pic->tex = draw_generatecrosshair(0);
354 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair2.tga"))
355 pic->tex = draw_generatecrosshair(1);
356 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair3.tga"))
357 pic->tex = draw_generatecrosshair(2);
358 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair4.tga"))
359 pic->tex = draw_generatecrosshair(3);
360 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair5.tga"))
361 pic->tex = draw_generatecrosshair(4);
362 if (pic->tex == NULL && !strcmp(path, "gfx/colorcontrol/ditherpattern.tga"))
363 pic->tex = draw_generateditherpattern();
364 if (pic->tex == NULL)
366 Con_Printf("Draw_CachePic: failed to load %s\n", path);
367 pic->tex = r_texture_notexture;
370 pic->width = R_TextureWidth(pic->tex);
371 pic->height = R_TextureHeight(pic->tex);
375 cachepic_t *Draw_NewPic(const char *picname, int width, int height, int alpha, qbyte *pixels)
380 crc = CRC_Block(picname, strlen(picname));
381 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
382 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
383 if (!strcmp (picname, pic->name))
388 if (pic->tex && pic->width == width && pic->height == height)
390 R_UpdateTexture(pic->tex, pixels);
398 if (numcachepics == MAX_CACHED_PICS)
399 Sys_Error ("numcachepics == MAX_CACHED_PICS");
400 pic = cachepics + (numcachepics++);
401 strcpy (pic->name, picname);
403 pic->chain = cachepichash[hashkey];
404 cachepichash[hashkey] = pic;
409 pic->height = height;
411 R_FreeTexture(pic->tex);
412 pic->tex = R_LoadTexture2D(drawtexturepool, picname, width, height, pixels, TEXTYPE_RGBA, alpha ? TEXF_ALPHA : 0, NULL);
416 void Draw_FreePic(const char *picname)
421 // this doesn't really free the pic, but does free it's texture
422 crc = CRC_Block(picname, strlen(picname));
423 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
424 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
426 if (!strcmp (picname, pic->name) && pic->tex)
428 R_FreeTexture(pic->tex);
441 static void gl_draw_start(void)
443 drawtexturepool = R_AllocTexturePool();
446 memset(cachepichash, 0, sizeof(cachepichash));
448 char_texture = Draw_CachePic("gfx/conchars", true)->tex;
451 static void gl_draw_shutdown(void)
453 R_FreeTexturePool(&drawtexturepool);
456 memset(cachepichash, 0, sizeof(cachepichash));
459 static void gl_draw_newmap(void)
463 void GL_Draw_Init (void)
466 memset(cachepichash, 0, sizeof(cachepichash));
468 R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap);
471 float blendvertex3f[9] = {-5000, -5000, 10, 10000, -5000, 10, -5000, 10000, 10};
473 int quadelements[768];
474 void R_DrawQueue(void)
476 int pos, num, chartexnum, texnum, batch;
477 float x, y, w, h, s, t, u, v, *av, *at, c[4];
483 drawqueuemesh_t *mesh;
486 if (!r_render.integer)
489 if (!quadelements[1])
491 // elements for rendering a series of quads as triangles
492 for (batch = 0, pos = 0, num = 0;batch < 128;batch++, num += 4)
494 quadelements[pos++] = num;
495 quadelements[pos++] = num + 1;
496 quadelements[pos++] = num + 2;
497 quadelements[pos++] = num;
498 quadelements[pos++] = num + 2;
499 quadelements[pos++] = num + 3;
503 r_view_width = bound(0, r_refdef.width, vid.width);
504 r_view_height = bound(0, r_refdef.height, vid.height);
506 r_view_x = bound(0, r_refdef.x, vid.width - r_refdef.width);
507 r_view_y = bound(0, r_refdef.y, vid.height - r_refdef.height);
509 r_view_fov_x = bound(0.1, r_refdef.fov_x, 170);
510 r_view_fov_y = bound(0.1, r_refdef.fov_y, 170);
511 r_view_matrix = r_refdef.viewentitymatrix;
512 GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
514 qglViewport(r_view_x, vid.height - (r_view_y + r_view_height), r_view_width, r_view_height);
515 GL_SetupView_Mode_Ortho(0, 0, vid_conwidth.integer, vid_conheight.integer, -10, 100);
516 qglDepthFunc(GL_LEQUAL);
517 R_Mesh_Matrix(&r_identitymatrix);
519 chartexnum = R_GetTexture(char_texture);
521 memset(&m, 0, sizeof(m));
530 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
532 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
535 if(dq->flags == DRAWFLAG_ADDITIVE)
536 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
537 else if(dq->flags == DRAWFLAG_MODULATE)
538 GL_BlendFunc(GL_DST_COLOR, GL_ZERO);
539 else if(dq->flags == DRAWFLAG_2XMODULATE)
540 GL_BlendFunc(GL_DST_COLOR,GL_SRC_COLOR);
542 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
547 c[0] = (float) ((color >> 24) & 0xFF) * (1.0f / 255.0f);
548 c[1] = (float) ((color >> 16) & 0xFF) * (1.0f / 255.0f);
549 c[2] = (float) ((color >> 8) & 0xFF) * (1.0f / 255.0f);
550 c[3] = (float) ( color & 0xFF) * (1.0f / 255.0f);
558 case DRAWQUEUE_STRING:
559 GL_Color(c[0], c[1], c[2], c[3]);
560 str = (char *)(dq + 1);
562 m.pointer_vertex = varray_vertex3f;
563 m.pointer_color = NULL;
564 m.pointer_texcoord[0] = varray_texcoord2f[0];
565 m.tex[0] = chartexnum;
567 at = varray_texcoord2f[0];
568 av = varray_vertex3f;
569 while ((num = *str++) && x < vid_conwidth.integer)
573 s = (num & 15)*0.0625f + (0.5f / 256.0f);
574 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
575 u = 0.0625f - (1.0f / 256.0f);
576 v = 0.0625f - (1.0f / 256.0f);
577 at[ 0] = s ;at[ 1] = t ;
578 at[ 2] = s+u;at[ 3] = t ;
579 at[ 4] = s+u;at[ 5] = t+v;
580 at[ 6] = s ;at[ 7] = t+v;
581 av[ 0] = x ;av[ 1] = y ;av[ 2] = 10;
582 av[ 3] = x+w;av[ 4] = y ;av[ 5] = 10;
583 av[ 6] = x+w;av[ 7] = y+h;av[ 8] = 10;
584 av[ 9] = x ;av[10] = y+h;av[11] = 10;
588 if (batchcount >= 128)
590 GL_LockArrays(0, batchcount * 4);
591 R_Mesh_Draw(0, batchcount * 4, batchcount * 2, quadelements);
594 at = varray_texcoord2f[0];
595 av = varray_vertex3f;
602 GL_LockArrays(0, batchcount * 4);
603 R_Mesh_Draw(0, batchcount * 4, batchcount * 2, quadelements);
608 mesh = (void *)(dq + 1);
609 m.pointer_vertex = mesh->data_vertex3f;
610 m.pointer_color = mesh->data_color4f;
611 m.pointer_texcoord[0] = mesh->data_texcoord2f;
612 m.tex[0] = R_GetTexture(mesh->texture);
614 m.pointer_texcoord[0] = NULL;
616 GL_LockArrays(0, mesh->num_vertices);
617 R_Mesh_Draw(0, mesh->num_vertices, mesh->num_triangles, mesh->data_element3i);
620 case DRAWQUEUE_SETCLIP:
622 // We have to convert the con coords into real coords
623 int x , y, width, height;
624 x = dq->x * ((float)vid.width / vid_conwidth.integer);
625 // OGL uses top to bottom
626 y = dq->y * ((float) vid.height / vid_conheight.integer);
627 width = dq->scalex * ((float)vid.width / vid_conwidth.integer);
628 height = dq->scaley * ((float)vid.height / vid_conheight.integer);
630 GL_Scissor(x, y, width, height);
632 GL_ScissorTest(true);
635 case DRAWQUEUE_RESETCLIP:
636 GL_ScissorTest(false);
641 if (!vid_usinghwgamma)
643 // all the blends ignore depth
644 memset(&m, 0, sizeof(m));
645 m.pointer_vertex = blendvertex3f;
649 if (v_color_enable.integer)
651 c[0] = v_color_white_r.value;
652 c[1] = v_color_white_g.value;
653 c[2] = v_color_white_b.value;
656 c[0] = c[1] = c[2] = v_contrast.value;
657 if (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
659 GL_BlendFunc(GL_DST_COLOR, GL_ONE);
660 while (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
662 GL_Color(bound(0, c[0] - 1, 1), bound(0, c[1] - 1, 1), bound(0, c[2] - 1, 1), 1);
663 R_Mesh_Draw(0, 3, 1, polygonelements);
664 VectorScale(c, 0.5, c);
667 if (v_color_enable.integer)
669 c[0] = v_color_black_r.value;
670 c[1] = v_color_black_g.value;
671 c[2] = v_color_black_b.value;
674 c[0] = c[1] = c[2] = v_brightness.value;
675 if (c[0] >= 0.01f || c[1] >= 0.01f || c[2] >= 0.01f)
677 GL_BlendFunc(GL_ONE, GL_ONE);
678 GL_Color(c[0], c[1], c[2], 1);
679 R_Mesh_Draw(0, 3, 1, polygonelements);