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.
24 cvar_t scr_conalpha = {CVAR_SAVE, "scr_conalpha", "1"};
26 static rtexture_t *char_texture;
28 //=============================================================================
29 /* Support Routines */
31 #define MAX_CACHED_PICS 256
32 #define CACHEPICHASHSIZE 256
33 static cachepic_t *cachepichash[CACHEPICHASHSIZE];
34 static cachepic_t cachepics[MAX_CACHED_PICS];
35 static int numcachepics;
37 static rtexturepool_t *drawtexturepool;
39 static qbyte pointerimage[256] =
59 static rtexture_t *draw_generatemousepointer(void)
63 for (i = 0;i < 256;i++)
65 if (pointerimage[i] == '.')
74 buffer[i][0] = (pointerimage[i] - '0') * 16;
75 buffer[i][1] = (pointerimage[i] - '0') * 16;
76 buffer[i][2] = (pointerimage[i] - '0') * 16;
80 return R_LoadTexture2D(drawtexturepool, "mousepointer", 16, 16, &buffer[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
83 // must match NUMCROSSHAIRS in r_crosshairs.c
84 #define NUMCROSSHAIRS 5
86 static qbyte *crosshairtexdata[NUMCROSSHAIRS] =
174 static rtexture_t *draw_generatecrosshair(int num)
178 qbyte data[16*16][4];
179 in = crosshairtexdata[num];
180 for (i = 0;i < 16*16;i++)
194 data[i][3] = (qbyte) ((int) (in[i] - '0') * 255 / 7);
197 return R_LoadTexture2D(drawtexturepool, va("crosshair%i", num), 16, 16, &data[0][0], TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
200 static rtexture_t *draw_generateditherpattern(void)
203 memset(data, 255, sizeof(data));
204 data[0] = data[1] = data[2] = data[12] = data[13] = data[14] = 0;
205 return R_LoadTexture2D(drawtexturepool, "ditherpattern", 2, 2, data, TEXTYPE_RGBA, TEXF_FORCENEAREST | TEXF_PRECACHE, NULL);
213 // FIXME: move this to client somehow
214 cachepic_t *Draw_CachePic (char *path)
220 crc = CRC_Block(path, strlen(path));
221 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
222 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
223 if (!strcmp (path, pic->name))
226 if (numcachepics == MAX_CACHED_PICS)
227 Sys_Error ("numcachepics == MAX_CACHED_PICS");
228 pic = cachepics + (numcachepics++);
229 strcpy (pic->name, path);
231 pic->chain = cachepichash[hashkey];
232 cachepichash[hashkey] = pic;
234 // load the pic from disk
235 pic->tex = loadtextureimage(drawtexturepool, path, 0, 0, false, TEXF_ALPHA | TEXF_PRECACHE);
236 if (pic->tex == NULL && !strncmp(path, "gfx/", 4))
238 // compatibility with older versions
239 pic->tex = loadtextureimage(drawtexturepool, path + 4, 0, 0, false, TEXF_ALPHA | TEXF_PRECACHE);
240 // failed to find gfx/whatever.tga or similar, try the wad
241 if (pic->tex == NULL && (p = W_GetLumpName (path + 4)))
243 if (!strcmp(path, "gfx/conchars"))
246 // conchars is a raw image and with the wrong transparent color
248 for (i = 0;i < 128 * 128;i++)
251 pic->tex = R_LoadTexture2D(drawtexturepool, path, 128, 128, pix, TEXTYPE_PALETTE, TEXF_ALPHA | TEXF_PRECACHE, palette_complete);
254 pic->tex = R_LoadTexture2D(drawtexturepool, path, p->width, p->height, p->data, TEXTYPE_PALETTE, TEXF_ALPHA | TEXF_PRECACHE, palette_complete);
257 if (pic->tex == NULL && !strcmp(path, "ui/mousepointer.tga"))
258 pic->tex = draw_generatemousepointer();
259 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair1.tga"))
260 pic->tex = draw_generatecrosshair(0);
261 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair2.tga"))
262 pic->tex = draw_generatecrosshair(1);
263 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair3.tga"))
264 pic->tex = draw_generatecrosshair(2);
265 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair4.tga"))
266 pic->tex = draw_generatecrosshair(3);
267 if (pic->tex == NULL && !strcmp(path, "gfx/crosshair5.tga"))
268 pic->tex = draw_generatecrosshair(4);
269 if (pic->tex == NULL && !strcmp(path, "gfx/colorcontrol/ditherpattern.tga"))
270 pic->tex = draw_generateditherpattern();
271 if (pic->tex == NULL)
273 Con_Printf ("Draw_CachePic: failed to load %s\n", path);
274 pic->tex = r_notexture;
277 pic->width = R_TextureWidth(pic->tex);
278 pic->height = R_TextureHeight(pic->tex);
282 cachepic_t *Draw_NewPic(char *picname, int width, int height, int alpha, qbyte *pixels)
287 crc = CRC_Block(picname, strlen(picname));
288 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
289 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
290 if (!strcmp (picname, pic->name))
295 if (pic->tex && pic->width == width && pic->height == height)
297 R_UpdateTexture(pic->tex, pixels);
305 if (numcachepics == MAX_CACHED_PICS)
306 Sys_Error ("numcachepics == MAX_CACHED_PICS");
307 pic = cachepics + (numcachepics++);
308 strcpy (pic->name, picname);
310 pic->chain = cachepichash[hashkey];
311 cachepichash[hashkey] = pic;
316 pic->height = height;
318 R_FreeTexture(pic->tex);
319 pic->tex = R_LoadTexture2D(drawtexturepool, picname, width, height, pixels, TEXTYPE_RGBA, alpha ? TEXF_ALPHA : 0, NULL);
323 void Draw_FreePic(char *picname)
328 // this doesn't really free the pic, but does free it's texture
329 crc = CRC_Block(picname, strlen(picname));
330 hashkey = ((crc >> 8) ^ crc) % CACHEPICHASHSIZE;
331 for (pic = cachepichash[hashkey];pic;pic = pic->chain)
333 if (!strcmp (picname, pic->name))
335 R_FreeTexture(pic->tex);
348 static void gl_draw_start(void)
350 drawtexturepool = R_AllocTexturePool();
353 memset(cachepichash, 0, sizeof(cachepichash));
355 char_texture = Draw_CachePic("gfx/conchars")->tex;
358 static void gl_draw_shutdown(void)
360 R_FreeTexturePool(&drawtexturepool);
363 memset(cachepichash, 0, sizeof(cachepichash));
366 static void gl_draw_newmap(void)
370 void GL_Draw_Init (void)
372 Cvar_RegisterVariable (&scr_conalpha);
375 memset(cachepichash, 0, sizeof(cachepichash));
377 R_RegisterModule("GL_Draw", gl_draw_start, gl_draw_shutdown, gl_draw_newmap);
380 int quadelements[768];
381 void R_DrawQueue(void)
383 int pos, num, chartexnum, overbright, texnum, additive, batch;
384 float x, y, w, h, s, t, u, v, *av, *at, c[4];
387 char *str, *currentpic;
390 drawqueuemesh_t *mesh;
393 if (!r_render.integer)
396 if (!quadelements[1])
398 // elements for rendering a series of quads as triangles
399 for (batch = 0, pos = 0, num = 0;batch < 128;batch++, num += 4)
401 quadelements[pos++] = num;
402 quadelements[pos++] = num + 1;
403 quadelements[pos++] = num + 2;
404 quadelements[pos++] = num;
405 quadelements[pos++] = num + 2;
406 quadelements[pos++] = num + 3;
409 GL_SetupView_ViewPort(vid.realx, vid.realy, vid.realwidth, vid.realheight);
410 GL_SetupView_Mode_Ortho(0, 0, vid.conwidth, vid.conheight, -10, 100);
411 qglDepthFunc(GL_LEQUAL);
413 R_Mesh_Matrix(&r_identitymatrix);
415 chartexnum = R_GetTexture(char_texture);
417 memset(&m, 0, sizeof(m));
419 R_Mesh_TextureState(&m);
426 overbright = v_overbrightbits.integer;
429 for (pos = 0;pos < r_refdef.drawqueuesize;pos += ((drawqueue_t *)(r_refdef.drawqueue + pos))->size)
431 dq = (drawqueue_t *)(r_refdef.drawqueue + pos);
432 additive = (dq->flags & DRAWFLAG_ADDITIVE) != 0;
434 m.blendfunc1 = GL_SRC_ALPHA;
436 m.blendfunc2 = GL_ONE;
438 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
439 m.depthdisable = true;
440 R_Mesh_MainState(&m);
442 c[0] = (float) ((color >> 24) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
443 c[1] = (float) ((color >> 16) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
444 c[2] = (float) ((color >> 8) & 0xFF) * (1.0f / 255.0f) * r_colorscale;
445 c[3] = (float) ( color & 0xFF) * (1.0f / 255.0f);
454 str = (char *)(dq + 1);
455 if (strcmp(str, currentpic))
460 pic = Draw_CachePic(str);
461 m.tex[0] = R_GetTexture(pic->tex);
465 R_Mesh_TextureState(&m);
474 varray_texcoord[0][ 0] = 0;varray_texcoord[0][ 1] = 0;
475 varray_texcoord[0][ 4] = 1;varray_texcoord[0][ 5] = 0;
476 varray_texcoord[0][ 8] = 1;varray_texcoord[0][ 9] = 1;
477 varray_texcoord[0][12] = 0;varray_texcoord[0][13] = 1;
478 varray_vertex[ 0] = x ;varray_vertex[ 1] = y ;varray_vertex[ 2] = 10;
479 varray_vertex[ 4] = x+w;varray_vertex[ 5] = y ;varray_vertex[ 6] = 10;
480 varray_vertex[ 8] = x+w;varray_vertex[ 9] = y+h;varray_vertex[10] = 10;
481 varray_vertex[12] = x ;varray_vertex[13] = y+h;varray_vertex[14] = 10;
482 GL_Color(c[0], c[1], c[2], c[3]);
483 R_Mesh_Draw(4, 2, quadelements);
485 case DRAWQUEUE_STRING:
486 str = (char *)(dq + 1);
487 if (strcmp("gfx/conchars", currentpic))
489 currentpic = "gfx/conchars";
490 m.tex[0] = chartexnum;
491 R_Mesh_TextureState(&m);
494 at = varray_texcoord[0];
496 GL_Color(c[0], c[1], c[2], c[3]);
497 while ((num = *str++) && x < vid.conwidth)
501 s = (num & 15)*0.0625f + (0.5f / 256.0f);
502 t = (num >> 4)*0.0625f + (0.5f / 256.0f);
503 u = 0.0625f - (1.0f / 256.0f);
504 v = 0.0625f - (1.0f / 256.0f);
505 at[ 0] = s ;at[ 1] = t ;
506 at[ 4] = s+u;at[ 5] = t ;
507 at[ 8] = s+u;at[ 9] = t+v;
508 at[12] = s ;at[13] = t+v;
509 av[ 0] = x ;av[ 1] = y ;av[ 2] = 10;
510 av[ 4] = x+w;av[ 5] = y ;av[ 6] = 10;
511 av[ 8] = x+w;av[ 9] = y+h;av[10] = 10;
512 av[12] = x ;av[13] = y+h;av[14] = 10;
516 if (batchcount >= 128)
518 R_Mesh_Draw(batchcount * 4, batchcount * 2, quadelements);
520 at = varray_texcoord[0];
527 R_Mesh_Draw(batchcount * 4, batchcount * 2, quadelements);
530 mesh = (void *)(dq + 1);
531 m.tex[0] = R_GetTexture(mesh->texture);
532 R_Mesh_TextureState(&m);
533 R_Mesh_ResizeCheck(mesh->numvertices);
534 memcpy(varray_vertex, mesh->vertices, sizeof(float[4]) * mesh->numvertices);
535 memcpy(varray_texcoord[0], mesh->texcoords, sizeof(float[4]) * mesh->numvertices);
536 memcpy(varray_color, mesh->colors, sizeof(float[4]) * mesh->numvertices);
538 R_Mesh_Draw(mesh->numvertices, mesh->numtriangles, mesh->indices);
544 if (!vid_usinghwgamma)
546 // we use one big triangle for all the screen blends
547 varray_texcoord[0][0] = 0;varray_texcoord[0][1] = 0;
548 varray_texcoord[0][4] = 0;varray_texcoord[0][5] = 0;
549 varray_texcoord[0][8] = 0;varray_texcoord[0][9] = 0;
550 varray_vertex[0] = -5000;varray_vertex[1] = -5000;varray_vertex[2] = 10;
551 varray_vertex[4] = 10000;varray_vertex[5] = -5000;varray_vertex[6] = 10;
552 varray_vertex[8] = -5000;varray_vertex[9] = 10000;varray_vertex[10] = 10;
553 // all the blends ignore depth
554 memset(&m, 0, sizeof(m));
555 m.depthdisable = true;
556 if (v_color_enable.integer)
558 c[0] = v_color_white_r.value;
559 c[1] = v_color_white_g.value;
560 c[2] = v_color_white_b.value;
563 c[0] = c[1] = c[2] = v_contrast.value;
564 VectorScale(c, (float) (1 << v_overbrightbits.integer), c);
565 if (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
567 m.blendfunc1 = GL_DST_COLOR;
568 m.blendfunc2 = GL_ONE;
570 while (c[0] >= 1.01f || c[1] >= 1.01f || c[2] >= 1.01f)
572 GL_Color(bound(0, c[0] - 1, 1), bound(0, c[1] - 1, 1), bound(0, c[2] - 1, 1), 1);
573 R_Mesh_Draw(3, 1, polygonelements);
574 VectorScale(c, 0.5, c);
577 if (v_color_enable.integer)
579 c[0] = v_color_black_r.value;
580 c[1] = v_color_black_g.value;
581 c[2] = v_color_black_b.value;
584 c[0] = c[1] = c[2] = v_brightness.value;
585 if (c[0] >= 0.01f || c[1] >= 0.01f || c[2] >= 0.01f)
587 m.blendfunc1 = GL_ONE;
588 m.blendfunc2 = GL_ONE;
590 GL_Color(c[0], c[1], c[2], 1);
591 R_Mesh_Draw(3, 1, polygonelements);