462 lines
11 KiB
C
462 lines
11 KiB
C
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#include "quakedef.h"
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#include "image.h"
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// FIXME: fix skybox after vid_restart
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cvar_t r_sky = {CVAR_SAVE, "r_sky", "1", "enables sky rendering (black otherwise)"};
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cvar_t r_skyscroll1 = {CVAR_SAVE, "r_skyscroll1", "1", "speed at which upper clouds layer scrolls in quake sky"};
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cvar_t r_skyscroll2 = {CVAR_SAVE, "r_skyscroll2", "2", "speed at which lower clouds layer scrolls in quake sky"};
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int skyrenderlater;
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int skyrendermasked;
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static int skyrendersphere;
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static int skyrenderbox;
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static rtexturepool_t *skytexturepool;
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static char skyname[MAX_QPATH];
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static matrix4x4_t skymatrix;
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static matrix4x4_t skyinversematrix;
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typedef struct suffixinfo_s
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{
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const char *suffix;
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qboolean flipx, flipy, flipdiagonal;
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}
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suffixinfo_t;
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static const suffixinfo_t suffix[3][6] =
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{
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{
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{"px", false, false, false},
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{"nx", false, false, false},
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{"py", false, false, false},
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{"ny", false, false, false},
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{"pz", false, false, false},
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{"nz", false, false, false}
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},
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{
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{"posx", false, false, false},
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{"negx", false, false, false},
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{"posy", false, false, false},
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{"negy", false, false, false},
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{"posz", false, false, false},
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{"negz", false, false, false}
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},
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{
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{"rt", false, false, true},
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{"lf", true, true, true},
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{"bk", false, true, false},
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{"ft", true, false, false},
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{"up", false, false, true},
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{"dn", false, false, true}
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}
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};
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static skinframe_t *skyboxskinframe[6];
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void R_SkyStartFrame(void)
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{
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skyrendersphere = false;
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skyrenderbox = false;
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skyrendermasked = false;
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// for depth-masked sky, we need to know whether any sky was rendered
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skyrenderlater = false;
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if (r_sky.integer)
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{
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if (skyboxskinframe[0] || skyboxskinframe[1] || skyboxskinframe[2] || skyboxskinframe[3] || skyboxskinframe[4] || skyboxskinframe[5])
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skyrenderbox = true;
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else if (r_refdef.scene.worldmodel && r_refdef.scene.worldmodel->brush.solidskyskinframe)
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skyrendersphere = true;
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skyrendermasked = true;
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}
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}
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/*
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==================
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R_SetSkyBox
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==================
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*/
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static void R_UnloadSkyBox(void)
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{
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int i;
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int c = 0;
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for (i = 0;i < 6;i++)
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{
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if (skyboxskinframe[i])
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{
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// TODO: make a R_SkinFrame_Purge for single skins...
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c++;
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}
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skyboxskinframe[i] = NULL;
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}
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if (c && developer_loading.integer)
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Con_TimePrintf("unloading skybox\n");
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}
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static int R_LoadSkyBox(void)
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{
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int i, j, success;
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int indices[4] = {0,1,2,3};
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char name[MAX_INPUTLINE];
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unsigned char *image_buffer;
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unsigned char *temp;
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char vabuf[1024];
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R_UnloadSkyBox();
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if (!skyname[0])
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return true;
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for (j=0; j<3; j++)
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{
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success = 0;
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for (i=0; i<6; i++)
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{
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if (dpsnprintf(name, sizeof(name), "%s_%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
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{
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if (dpsnprintf(name, sizeof(name), "%s%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
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{
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if (dpsnprintf(name, sizeof(name), "env/%s%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
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{
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if (dpsnprintf(name, sizeof(name), "gfx/env/%s%s", skyname, suffix[j][i].suffix) < 0 || !(image_buffer = loadimagepixelsbgra(name, false, false, false, NULL)))
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continue;
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}
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}
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}
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temp = (unsigned char *)Mem_Alloc(tempmempool, image_width*image_height*4);
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Image_CopyMux (temp, image_buffer, image_width, image_height, suffix[j][i].flipx, suffix[j][i].flipy, suffix[j][i].flipdiagonal, 4, 4, indices);
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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);
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Mem_Free(image_buffer);
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Mem_Free(temp);
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success++;
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}
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if (success)
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break;
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}
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if (j == 3)
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return false;
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if (developer_loading.integer)
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Con_TimePrintf("loading skybox \"%s\"\n", name);
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return true;
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}
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int R_SetSkyBox(const char *sky)
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{
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if (strcmp(sky, skyname) == 0) // no change
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return true;
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if (strlen(sky) > 1000)
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{
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Con_Printf("sky name too long (%i, max is 1000)\n", (int)strlen(sky));
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return false;
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}
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strlcpy(skyname, sky, sizeof(skyname));
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return R_LoadSkyBox();
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}
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// LordHavoc: added LoadSky console command
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static void LoadSky_f (void)
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{
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switch (Cmd_Argc())
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{
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case 1:
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if (skyname[0])
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Con_Printf("current sky: %s\n", skyname);
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else
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Con_Print("no skybox has been set\n");
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break;
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case 2:
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if (R_SetSkyBox(Cmd_Argv(1)))
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{
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if (skyname[0])
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Con_Printf("skybox set to %s\n", skyname);
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else
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Con_Print("skybox disabled\n");
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}
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else
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Con_Printf("failed to load skybox %s\n", Cmd_Argv(1));
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break;
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default:
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Con_Print("usage: loadsky skyname\n");
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break;
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}
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}
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static const float skyboxvertex3f[6*4*3] =
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{
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// skyside[0]
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16, -16, 16,
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16, -16, -16,
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16, 16, -16,
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16, 16, 16,
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// skyside[1]
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-16, 16, 16,
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-16, 16, -16,
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-16, -16, -16,
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-16, -16, 16,
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// skyside[2]
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16, 16, 16,
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16, 16, -16,
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-16, 16, -16,
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-16, 16, 16,
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// skyside[3]
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-16, -16, 16,
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-16, -16, -16,
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16, -16, -16,
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16, -16, 16,
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// skyside[4]
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-16, -16, 16,
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16, -16, 16,
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16, 16, 16,
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-16, 16, 16,
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// skyside[5]
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16, -16, -16,
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-16, -16, -16,
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-16, 16, -16,
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16, 16, -16
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};
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static const float skyboxtexcoord2f[6*4*2] =
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{
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// skyside[0]
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0, 1,
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1, 1,
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1, 0,
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0, 0,
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// skyside[1]
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1, 0,
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0, 0,
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0, 1,
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1, 1,
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// skyside[2]
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1, 1,
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1, 0,
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0, 0,
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0, 1,
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// skyside[3]
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0, 0,
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0, 1,
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1, 1,
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1, 0,
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// skyside[4]
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0, 1,
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1, 1,
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1, 0,
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0, 0,
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// skyside[5]
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0, 1,
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1, 1,
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1, 0,
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0, 0
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};
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static const int skyboxelement3i[6*2*3] =
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{
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// skyside[3]
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0, 1, 2,
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0, 2, 3,
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// skyside[1]
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4, 5, 6,
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4, 6, 7,
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// skyside[0]
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8, 9, 10,
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8, 10, 11,
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// skyside[2]
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12, 13, 14,
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12, 14, 15,
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// skyside[4]
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16, 17, 18,
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16, 18, 19,
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// skyside[5]
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20, 21, 22,
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20, 22, 23
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};
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static const unsigned short skyboxelement3s[6*2*3] =
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{
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// skyside[3]
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0, 1, 2,
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0, 2, 3,
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// skyside[1]
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4, 5, 6,
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4, 6, 7,
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// skyside[0]
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8, 9, 10,
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8, 10, 11,
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// skyside[2]
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12, 13, 14,
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12, 14, 15,
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// skyside[4]
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16, 17, 18,
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16, 18, 19,
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// skyside[5]
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20, 21, 22,
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20, 22, 23
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};
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static void R_SkyBox(void)
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{
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int i;
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RSurf_ActiveCustomEntity(&skymatrix, &skyinversematrix, 0, 0, 1, 1, 1, 1, 6*4, skyboxvertex3f, skyboxtexcoord2f, NULL, NULL, NULL, NULL, 6*2, skyboxelement3i, skyboxelement3s, false, false);
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for (i = 0;i < 6;i++)
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if(skyboxskinframe[i])
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R_DrawCustomSurface(skyboxskinframe[i], &identitymatrix, MATERIALFLAG_SKY | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOCULLFACE | MATERIALFLAG_NODEPTHTEST, i*4, 4, i*2, 2, false, false);
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}
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#define skygridx 32
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#define skygridx1 (skygridx + 1)
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#define skygridxrecip (1.0f / (skygridx))
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#define skygridy 32
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#define skygridy1 (skygridy + 1)
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#define skygridyrecip (1.0f / (skygridy))
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#define skysphere_numverts (skygridx1 * skygridy1)
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#define skysphere_numtriangles (skygridx * skygridy * 2)
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static float skysphere_vertex3f[skysphere_numverts * 3];
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static float skysphere_texcoord2f[skysphere_numverts * 2];
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static int skysphere_element3i[skysphere_numtriangles * 3];
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static unsigned short skysphere_element3s[skysphere_numtriangles * 3];
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static void skyspherecalc(void)
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{
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int i, j;
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unsigned short *e;
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float a, b, x, ax, ay, v[3], length, *vertex3f, *texcoord2f;
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float dx, dy, dz;
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dx = 16.0f;
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dy = 16.0f;
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dz = 16.0f / 3.0f;
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vertex3f = skysphere_vertex3f;
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texcoord2f = skysphere_texcoord2f;
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for (j = 0;j <= skygridy;j++)
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{
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a = j * skygridyrecip;
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ax = cos(a * M_PI * 2);
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ay = -sin(a * M_PI * 2);
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for (i = 0;i <= skygridx;i++)
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{
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b = i * skygridxrecip;
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x = cos((b + 0.5) * M_PI);
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v[0] = ax*x * dx;
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v[1] = ay*x * dy;
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v[2] = -sin((b + 0.5) * M_PI) * dz;
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length = 3.0f / sqrt(v[0]*v[0]+v[1]*v[1]+(v[2]*v[2]*9));
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*texcoord2f++ = v[0] * length;
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*texcoord2f++ = v[1] * length;
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*vertex3f++ = v[0];
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*vertex3f++ = v[1];
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*vertex3f++ = v[2];
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}
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}
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e = skysphere_element3s;
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for (j = 0;j < skygridy;j++)
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{
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for (i = 0;i < skygridx;i++)
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{
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*e++ = j * skygridx1 + i;
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*e++ = j * skygridx1 + i + 1;
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*e++ = (j + 1) * skygridx1 + i;
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*e++ = j * skygridx1 + i + 1;
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*e++ = (j + 1) * skygridx1 + i + 1;
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*e++ = (j + 1) * skygridx1 + i;
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}
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}
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for (i = 0;i < skysphere_numtriangles*3;i++)
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skysphere_element3i[i] = skysphere_element3s[i];
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}
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static void R_SkySphere(void)
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{
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double speedscale;
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static qboolean skysphereinitialized = false;
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matrix4x4_t scroll1matrix, scroll2matrix;
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if (!skysphereinitialized)
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{
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skysphereinitialized = true;
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skyspherecalc();
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}
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// wrap the scroll values just to be extra kind to float accuracy
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// scroll speed for upper layer
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speedscale = r_refdef.scene.time*r_skyscroll1.value*8.0/128.0;
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speedscale -= floor(speedscale);
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Matrix4x4_CreateTranslate(&scroll1matrix, speedscale, speedscale, 0);
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// scroll speed for lower layer (transparent layer)
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speedscale = r_refdef.scene.time*r_skyscroll2.value*8.0/128.0;
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speedscale -= floor(speedscale);
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Matrix4x4_CreateTranslate(&scroll2matrix, speedscale, speedscale, 0);
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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);
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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);
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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);
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}
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void R_Sky(void)
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{
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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));
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Matrix4x4_Invert_Simple(&skyinversematrix, &skymatrix);
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if (skyrendersphere)
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{
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// this does not modify depth buffer
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R_SkySphere();
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}
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else if (skyrenderbox)
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{
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// this does not modify depth buffer
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R_SkyBox();
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}
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/* this will be skyroom someday
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else
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{
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// this modifies the depth buffer so we have to clear it afterward
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//R_SkyRoom();
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// clear the depthbuffer that was used while rendering the skyroom
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//GL_Clear(GL_DEPTH_BUFFER_BIT);
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}
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*/
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}
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//===============================================================
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void R_ResetSkyBox(void)
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{
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R_UnloadSkyBox();
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skyname[0] = 0;
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R_LoadSkyBox();
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}
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static void r_sky_start(void)
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{
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skytexturepool = R_AllocTexturePool();
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R_LoadSkyBox();
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}
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static void r_sky_shutdown(void)
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{
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R_UnloadSkyBox();
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R_FreeTexturePool(&skytexturepool);
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}
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static void r_sky_newmap(void)
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{
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}
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void R_Sky_Init(void)
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{
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Cmd_AddCommand ("loadsky", &LoadSky_f, "load a skybox by basename (for example loadsky mtnsun_ loads mtnsun_ft.tga and so on)");
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Cvar_RegisterVariable (&r_sky);
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Cvar_RegisterVariable (&r_skyscroll1);
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Cvar_RegisterVariable (&r_skyscroll2);
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memset(&skyboxskinframe, 0, sizeof(skyboxskinframe));
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skyname[0] = 0;
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R_RegisterModule("R_Sky", r_sky_start, r_sky_shutdown, r_sky_newmap, NULL, NULL);
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}
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