5 // FIXME: fix skybox after vid_restart
6 cvar_t r_sky = {CVAR_SAVE, "r_sky", "1", "enables sky rendering (black otherwise)"};
7 cvar_t r_skyscroll1 = {CVAR_SAVE, "r_skyscroll1", "1", "speed at which upper clouds layer scrolls in quake sky"};
8 cvar_t r_skyscroll2 = {CVAR_SAVE, "r_skyscroll2", "2", "speed at which lower clouds layer scrolls in quake sky"};
9 cvar_t r_sky_scissor = {0, "r_sky_scissor", "1", "limit rendering of sky to approximately the area of the sky surfaces"};
13 float skyscissormins[3];
14 float skyscissormaxs[3];
16 static int skyrendersphere;
17 static int skyrenderbox;
18 static rtexturepool_t *skytexturepool;
19 static char skyname[MAX_QPATH];
20 static matrix4x4_t skymatrix;
21 static matrix4x4_t skyinversematrix;
23 typedef struct suffixinfo_s
26 qboolean flipx, flipy, flipdiagonal;
29 static const suffixinfo_t suffix[3][6] =
32 {"px", false, false, false},
33 {"nx", false, false, false},
34 {"py", false, false, false},
35 {"ny", false, false, false},
36 {"pz", false, false, false},
37 {"nz", false, false, false}
40 {"posx", false, false, false},
41 {"negx", false, false, false},
42 {"posy", false, false, false},
43 {"negy", false, false, false},
44 {"posz", false, false, false},
45 {"negz", false, false, false}
48 {"rt", false, false, true},
49 {"lf", true, true, true},
50 {"bk", false, true, false},
51 {"ft", true, false, false},
52 {"up", false, false, true},
53 {"dn", false, false, true}
57 static skinframe_t *skyboxskinframe[6];
59 void R_SkyStartFrame(void)
61 skyrendersphere = false;
63 skyrendermasked = false;
64 // for depth-masked sky, we need to know whether any sky was rendered
65 skyrenderlater = false;
66 // we can scissor the sky to just the relevant area
68 VectorClear(skyscissormins);
69 VectorClear(skyscissormaxs);
72 if (skyboxskinframe[0] || skyboxskinframe[1] || skyboxskinframe[2] || skyboxskinframe[3] || skyboxskinframe[4] || skyboxskinframe[5])
74 else if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.solidskyskinframe)
75 skyrendersphere = true;
76 skyrendermasked = true;
85 static void R_UnloadSkyBox(void)
91 if (skyboxskinframe[i])
93 // TODO: make a R_SkinFrame_Purge for single skins...
96 skyboxskinframe[i] = NULL;
98 if (c && developer_loading.integer)
99 Con_Printf("unloading skybox\n");
102 static int R_LoadSkyBox(void)
105 int indices[4] = {0,1,2,3};
106 char name[MAX_INPUTLINE];
107 unsigned char *image_buffer;
121 if (dpsnprintf(name, sizeof(name), "%s_%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
123 if (dpsnprintf(name, sizeof(name), "%s%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
125 if (dpsnprintf(name, sizeof(name), "env/%s%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
127 if (dpsnprintf(name, sizeof(name), "gfx/env/%s%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
132 temp = (unsigned char *)Mem_Alloc(tempmempool, image_width*image_height*4);
133 Image_CopyMux (temp, image_buffer, image_width, image_height, suffix[j][i].flipx, suffix[j][i].flipy, suffix[j][i].flipdiagonal, 4, 4, indices);
134 skyboxskinframe[i] = R_SkinFrame_LoadInternalBGRA(va(vabuf, sizeof(vabuf), "skyboxside%d", i), TEXF_CLAMP | (gl_texturecompression_sky.integer ? TEXF_COMPRESS : 0), temp, image_width, image_height, vid.sRGB3D);
135 Mem_Free(image_buffer);
147 if (developer_loading.integer)
148 Con_Printf("loading skybox \"%s\"\n", name);
153 int R_SetSkyBox(const char *sky)
155 if (strcmp(sky, skyname) == 0) // no change
158 if (strlen(sky) > 1000)
160 Con_Printf("sky name too long (%i, max is 1000)\n", (int)strlen(sky));
164 strlcpy(skyname, sky, sizeof(skyname));
166 return R_LoadSkyBox();
169 // LordHavoc: added LoadSky console command
170 static void LoadSky_f (void)
176 Con_Printf("current sky: %s\n", skyname);
178 Con_Print("no skybox has been set\n");
181 if (R_SetSkyBox(Cmd_Argv(1)))
184 Con_Printf("skybox set to %s\n", skyname);
186 Con_Print("skybox disabled\n");
189 Con_Printf("failed to load skybox %s\n", Cmd_Argv(1));
192 Con_Print("usage: loadsky skyname\n");
197 static const float skyboxvertex3f[6*4*3] =
231 static const float skyboxtexcoord2f[6*4*2] =
265 static const int skyboxelement3i[6*2*3] =
287 static const unsigned short skyboxelement3s[6*2*3] =
309 static void R_SkyBox(void)
312 RSurf_ActiveCustomEntity(&skymatrix, &skyinversematrix, 0, 0, 1, 1, 1, 1, 6*4, skyboxvertex3f, skyboxtexcoord2f, NULL, NULL, NULL, NULL, 6*2, skyboxelement3i, skyboxelement3s, false, false);
313 for (i = 0;i < 6;i++)
314 if(skyboxskinframe[i])
315 R_DrawCustomSurface(skyboxskinframe[i], &identitymatrix, MATERIALFLAG_SKY | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE | MATERIALFLAG_NODEPTHTEST, i*4, 4, i*2, 2, false, false);
319 #define skygridx1 (skygridx + 1)
320 #define skygridxrecip (1.0f / (skygridx))
322 #define skygridy1 (skygridy + 1)
323 #define skygridyrecip (1.0f / (skygridy))
324 #define skysphere_numverts (skygridx1 * skygridy1)
325 #define skysphere_numtriangles (skygridx * skygridy * 2)
326 static float skysphere_vertex3f[skysphere_numverts * 3];
327 static float skysphere_texcoord2f[skysphere_numverts * 2];
328 static int skysphere_element3i[skysphere_numtriangles * 3];
329 static unsigned short skysphere_element3s[skysphere_numtriangles * 3];
331 static void skyspherecalc(void)
335 float a, b, x, ax, ay, v[3], length, *vertex3f, *texcoord2f;
340 vertex3f = skysphere_vertex3f;
341 texcoord2f = skysphere_texcoord2f;
342 for (j = 0;j <= skygridy;j++)
344 a = j * skygridyrecip;
345 ax = cos(a * M_PI * 2);
346 ay = -sin(a * M_PI * 2);
347 for (i = 0;i <= skygridx;i++)
349 b = i * skygridxrecip;
350 x = cos((b + 0.5) * M_PI);
353 v[2] = -sin((b + 0.5) * M_PI) * dz;
354 length = 3.0f / sqrt(v[0]*v[0]+v[1]*v[1]+(v[2]*v[2]*9));
355 *texcoord2f++ = v[0] * length;
356 *texcoord2f++ = v[1] * length;
362 e = skysphere_element3s;
363 for (j = 0;j < skygridy;j++)
365 for (i = 0;i < skygridx;i++)
367 *e++ = j * skygridx1 + i;
368 *e++ = j * skygridx1 + i + 1;
369 *e++ = (j + 1) * skygridx1 + i;
371 *e++ = j * skygridx1 + i + 1;
372 *e++ = (j + 1) * skygridx1 + i + 1;
373 *e++ = (j + 1) * skygridx1 + i;
376 for (i = 0;i < skysphere_numtriangles*3;i++)
377 skysphere_element3i[i] = skysphere_element3s[i];
380 static void R_SkySphere(void)
383 static qboolean skysphereinitialized = false;
384 matrix4x4_t scroll1matrix, scroll2matrix;
385 if (!skysphereinitialized)
387 skysphereinitialized = true;
391 // wrap the scroll values just to be extra kind to float accuracy
393 // scroll speed for upper layer
394 speedscale = r_refdef.scene.time*r_skyscroll1.value*8.0/128.0;
395 speedscale -= floor(speedscale);
396 Matrix4x4_CreateTranslate(&scroll1matrix, speedscale, speedscale, 0);
397 // scroll speed for lower layer (transparent layer)
398 speedscale = r_refdef.scene.time*r_skyscroll2.value*8.0/128.0;
399 speedscale -= floor(speedscale);
400 Matrix4x4_CreateTranslate(&scroll2matrix, speedscale, speedscale, 0);
402 RSurf_ActiveCustomEntity(&skymatrix, &skyinversematrix, 0, 0, 1, 1, 1, 1, skysphere_numverts, skysphere_vertex3f, skysphere_texcoord2f, NULL, NULL, NULL, NULL, skysphere_numtriangles, skysphere_element3i, skysphere_element3s, false, false);
403 R_DrawCustomSurface(r_refdef.scene.worldmodel->brush.solidskyskinframe, &scroll1matrix, MATERIALFLAG_SKY | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE | MATERIALFLAG_NODEPTHTEST , 0, skysphere_numverts, 0, skysphere_numtriangles, false, false);
404 R_DrawCustomSurface(r_refdef.scene.worldmodel->brush.alphaskyskinframe, &scroll2matrix, MATERIALFLAG_SKY | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE | MATERIALFLAG_NODEPTHTEST | MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED, 0, skysphere_numverts, 0, skysphere_numtriangles, false, false);
410 Matrix4x4_CreateFromQuakeEntity(&skymatrix, r_refdef.view.origin[0], r_refdef.view.origin[1], r_refdef.view.origin[2], 0, 0, 0, r_refdef.farclip * (0.5f / 16.0f));
411 Matrix4x4_Invert_Simple(&skyinversematrix, &skymatrix);
413 if (r_sky_scissor.integer && skyscissor)
415 // compute the scissor, if it's offscreen just return
416 if (R_ScissorForBBox(skyscissormins, skyscissormaxs, scissor))
418 GL_Scissor(scissor[0], scissor[1], scissor[2], scissor[3]);
419 GL_ScissorTest(true);
423 // this does not modify depth buffer
426 else if (skyrenderbox)
428 // this does not modify depth buffer
431 /* this will be skyroom someday
434 // this modifies the depth buffer so we have to clear it afterward
436 // clear the depthbuffer that was used while rendering the skyroom
437 //GL_Clear(GL_DEPTH_BUFFER_BIT);
440 GL_Scissor(0, 0, vid.width, vid.height);
443 //===============================================================
445 void R_ResetSkyBox(void)
452 static void r_sky_start(void)
454 skytexturepool = R_AllocTexturePool();
458 static void r_sky_shutdown(void)
461 R_FreeTexturePool(&skytexturepool);
464 static void r_sky_newmap(void)
469 void R_Sky_Init(void)
471 Cmd_AddCommand ("loadsky", &LoadSky_f, "load a skybox by basename (for example loadsky mtnsun_ loads mtnsun_ft.tga and so on)");
472 Cvar_RegisterVariable (&r_sky);
473 Cvar_RegisterVariable (&r_skyscroll1);
474 Cvar_RegisterVariable (&r_skyscroll2);
475 Cvar_RegisterVariable (&r_sky_scissor);
476 memset(&skyboxskinframe, 0, sizeof(skyboxskinframe));
478 R_RegisterModule("R_Sky", r_sky_start, r_sky_shutdown, r_sky_newmap, NULL, NULL);