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-rw-r--r--src/engine/rendersky.cpp774
1 files changed, 0 insertions, 774 deletions
diff --git a/src/engine/rendersky.cpp b/src/engine/rendersky.cpp
deleted file mode 100644
index 458befb..0000000
--- a/src/engine/rendersky.cpp
+++ /dev/null
@@ -1,774 +0,0 @@
-#include "engine.h"
-
-Texture *sky[6] = { 0, 0, 0, 0, 0, 0 }, *clouds[6] = { 0, 0, 0, 0, 0, 0 };
-
-void loadsky(const char *basename, Texture *texs[6])
-{
- const char *wildcard = strchr(basename, '*');
- loopi(6)
- {
- const char *side = cubemapsides[i].name;
- string name;
- copystring(name, makerelpath("packages", basename));
- if(wildcard)
- {
- char *chop = strchr(name, '*');
- if(chop) { *chop = '\0'; concatstring(name, side); concatstring(name, wildcard+1); }
- texs[i] = textureload(name, 3, true, false);
- }
- else
- {
- defformatstring(ext, "_%s.jpg", side);
- concatstring(name, ext);
- if((texs[i] = textureload(name, 3, true, false))==notexture)
- {
- strcpy(name+strlen(name)-3, "png");
- texs[i] = textureload(name, 3, true, false);
- }
- }
- if(texs[i]==notexture) conoutf(CON_ERROR, "could not load side %s of sky texture %s", side, basename);
- }
-}
-
-Texture *cloudoverlay = NULL;
-
-Texture *loadskyoverlay(const char *basename)
-{
- const char *ext = strrchr(basename, '.');
- string name;
- copystring(name, makerelpath("packages", basename));
- Texture *t = notexture;
- if(ext) t = textureload(name, 0, true, false);
- else
- {
- concatstring(name, ".jpg");
- if((t = textureload(name, 0, true, false)) == notexture)
- {
- strcpy(name+strlen(name)-3, "png");
- t = textureload(name, 0, true, false);
- }
- }
- if(t==notexture) conoutf(CON_ERROR, "could not load sky overlay texture %s", basename);
- return t;
-}
-
-SVARFR(skybox, "", { if(skybox[0]) loadsky(skybox, sky); });
-HVARR(skyboxcolour, 0, 0xFFFFFF, 0xFFFFFF);
-FVARR(spinsky, -720, 0, 720);
-VARR(yawsky, 0, 0, 360);
-SVARFR(cloudbox, "", { if(cloudbox[0]) loadsky(cloudbox, clouds); });
-HVARR(cloudboxcolour, 0, 0xFFFFFF, 0xFFFFFF);
-FVARR(cloudboxalpha, 0, 1, 1);
-FVARR(spinclouds, -720, 0, 720);
-VARR(yawclouds, 0, 0, 360);
-FVARR(cloudclip, 0, 0.5f, 1);
-SVARFR(cloudlayer, "", { if(cloudlayer[0]) cloudoverlay = loadskyoverlay(cloudlayer); });
-FVARR(cloudoffsetx, 0, 0, 1);
-FVARR(cloudoffsety, 0, 0, 1);
-FVARR(cloudscrollx, -16, 0, 16);
-FVARR(cloudscrolly, -16, 0, 16);
-FVARR(cloudscale, 0.001, 1, 64);
-FVARR(spincloudlayer, -720, 0, 720);
-VARR(yawcloudlayer, 0, 0, 360);
-FVARR(cloudheight, -1, 0.2f, 1);
-FVARR(cloudfade, 0, 0.2f, 1);
-FVARR(cloudalpha, 0, 1, 1);
-VARR(cloudsubdiv, 4, 16, 64);
-HVARR(cloudcolour, 0, 0xFFFFFF, 0xFFFFFF);
-
-void drawenvboxface(float s0, float t0, int x0, int y0, int z0,
- float s1, float t1, int x1, int y1, int z1,
- float s2, float t2, int x2, int y2, int z2,
- float s3, float t3, int x3, int y3, int z3,
- Texture *tex)
-{
- glBindTexture(GL_TEXTURE_2D, (tex ? tex : notexture)->id);
- gle::begin(GL_TRIANGLE_STRIP);
- gle::attribf(x3, y3, z3); gle::attribf(s3, t3);
- gle::attribf(x2, y2, z2); gle::attribf(s2, t2);
- gle::attribf(x0, y0, z0); gle::attribf(s0, t0);
- gle::attribf(x1, y1, z1); gle::attribf(s1, t1);
- xtraverts += gle::end();
-}
-
-void drawenvbox(int w, float z1clip = 0.0f, float z2clip = 1.0f, int faces = 0x3F, Texture **sky = NULL)
-{
- if(z1clip >= z2clip) return;
-
- float v1 = 1-z1clip, v2 = 1-z2clip;
- int z1 = int(ceil(2*w*(z1clip-0.5f))), z2 = int(ceil(2*w*(z2clip-0.5f)));
-
- gle::defvertex();
- gle::deftexcoord0();
-
- if(faces&0x01)
- drawenvboxface(0.0f, v2, -w, -w, z2,
- 1.0f, v2, -w, w, z2,
- 1.0f, v1, -w, w, z1,
- 0.0f, v1, -w, -w, z1, sky[0]);
-
- if(faces&0x02)
- drawenvboxface(1.0f, v1, w, -w, z1,
- 0.0f, v1, w, w, z1,
- 0.0f, v2, w, w, z2,
- 1.0f, v2, w, -w, z2, sky[1]);
-
- if(faces&0x04)
- drawenvboxface(1.0f, v1, -w, -w, z1,
- 0.0f, v1, w, -w, z1,
- 0.0f, v2, w, -w, z2,
- 1.0f, v2, -w, -w, z2, sky[2]);
-
- if(faces&0x08)
- drawenvboxface(1.0f, v1, w, w, z1,
- 0.0f, v1, -w, w, z1,
- 0.0f, v2, -w, w, z2,
- 1.0f, v2, w, w, z2, sky[3]);
-
- if(z1clip <= 0 && faces&0x10)
- drawenvboxface(0.0f, 1.0f, -w, w, -w,
- 0.0f, 0.0f, w, w, -w,
- 1.0f, 0.0f, w, -w, -w,
- 1.0f, 1.0f, -w, -w, -w, sky[4]);
-
- if(z2clip >= 1 && faces&0x20)
- drawenvboxface(0.0f, 1.0f, w, w, w,
- 0.0f, 0.0f, -w, w, w,
- 1.0f, 0.0f, -w, -w, w,
- 1.0f, 1.0f, w, -w, w, sky[5]);
-}
-
-void drawenvoverlay(int w, Texture *overlay = NULL, float tx = 0, float ty = 0)
-{
- float z = w*cloudheight, tsz = 0.5f*(1-cloudfade)/cloudscale, psz = w*(1-cloudfade);
- glBindTexture(GL_TEXTURE_2D, overlay ? overlay->id : notexture->id);
- vec color = vec::hexcolor(cloudcolour);
- gle::color(color, cloudalpha);
- gle::defvertex();
- gle::deftexcoord0();
- gle::begin(GL_TRIANGLE_FAN);
- loopi(cloudsubdiv+1)
- {
- vec p(1, 1, 0);
- p.rotate_around_z((-2.0f*M_PI*i)/cloudsubdiv);
- gle::attribf(p.x*psz, p.y*psz, z);
- gle::attribf(tx + p.x*tsz, ty + p.y*tsz);
- }
- xtraverts += gle::end();
- float tsz2 = 0.5f/cloudscale;
- gle::defvertex();
- gle::deftexcoord0();
- gle::defcolor(4);
- gle::begin(GL_TRIANGLE_STRIP);
- loopi(cloudsubdiv+1)
- {
- vec p(1, 1, 0);
- p.rotate_around_z((-2.0f*M_PI*i)/cloudsubdiv);
- gle::attribf(p.x*psz, p.y*psz, z);
- gle::attribf(tx + p.x*tsz, ty + p.y*tsz);
- gle::attrib(color, cloudalpha);
- gle::attribf(p.x*w, p.y*w, z);
- gle::attribf(tx + p.x*tsz2, ty + p.y*tsz2);
- gle::attrib(color, 0.0f);
- }
- xtraverts += gle::end();
-}
-
-FVARR(fogdomeheight, -1, -0.5f, 1);
-FVARR(fogdomemin, 0, 0, 1);
-FVARR(fogdomemax, 0, 0, 1);
-VARR(fogdomecap, 0, 1, 1);
-FVARR(fogdomeclip, 0, 1, 1);
-bvec fogdomecolor(0, 0, 0);
-HVARFR(fogdomecolour, 0, 0, 0xFFFFFF,
-{
- fogdomecolor = bvec((fogdomecolour>>16)&0xFF, (fogdomecolour>>8)&0xFF, fogdomecolour&0xFF);
-});
-VARR(fogdomeclouds, 0, 1, 1);
-
-namespace fogdome
-{
- struct vert
- {
- vec pos;
- bvec4 color;
-
- vert() {}
- vert(const vec &pos, const bvec &fcolor, float alpha) : pos(pos), color(fcolor, uchar(alpha*255))
- {
- }
- vert(const vert &v0, const vert &v1) : pos(vec(v0.pos).add(v1.pos).normalize()), color(v0.color)
- {
- if(v0.pos.z != v1.pos.z) color.a += uchar((v1.color.a - v0.color.a) * (pos.z - v0.pos.z) / (v1.pos.z - v0.pos.z));
- }
- } *verts = NULL;
- GLushort *indices = NULL;
- int numverts = 0, numindices = 0, capindices = 0;
- GLuint vbuf = 0, ebuf = 0;
- bvec lastcolor(0, 0, 0);
- float lastminalpha = 0, lastmaxalpha = 0, lastcapsize = -1, lastclipz = 1;
-
- void subdivide(int depth, int face);
-
- void genface(int depth, int i1, int i2, int i3)
- {
- int face = numindices; numindices += 3;
- indices[face] = i3;
- indices[face+1] = i2;
- indices[face+2] = i1;
- subdivide(depth, face);
- }
-
- void subdivide(int depth, int face)
- {
- if(depth-- <= 0) return;
- int idx[6];
- loopi(3) idx[i] = indices[face+2-i];
- loopi(3)
- {
- int curvert = numverts++;
- verts[curvert] = vert(verts[idx[i]], verts[idx[(i+1)%3]]); //push on to unit sphere
- idx[3+i] = curvert;
- indices[face+2-i] = curvert;
- }
- subdivide(depth, face);
- loopi(3) genface(depth, idx[i], idx[3+i], idx[3+(i+2)%3]);
- }
-
- int sortcap(GLushort x, GLushort y)
- {
- const vec &xv = verts[x].pos, &yv = verts[y].pos;
- return xv.y < 0 ? yv.y >= 0 || xv.x < yv.x : yv.y >= 0 && xv.x > yv.x;
- }
-
- void init(const bvec &color, float minalpha = 0.0f, float maxalpha = 1.0f, float capsize = -1, float clipz = 1, int hres = 16, int depth = 2)
- {
- const int tris = hres << (2*depth);
- numverts = numindices = capindices = 0;
- verts = new vert[tris+1 + (capsize >= 0 ? 1 : 0)];
- indices = new GLushort[(tris + (capsize >= 0 ? hres<<depth : 0))*3];
- if(clipz >= 1)
- {
- verts[numverts++] = vert(vec(0.0f, 0.0f, 1.0f), color, minalpha); //build initial 'hres' sided pyramid
- loopi(hres) verts[numverts++] = vert(vec(sincos360[(360*i)/hres], 0.0f), color, maxalpha);
- loopi(hres) genface(depth, 0, i+1, 1+(i+1)%hres);
- }
- else if(clipz <= 0)
- {
- loopi(hres<<depth) verts[numverts++] = vert(vec(sincos360[(360*i)/(hres<<depth)], 0.0f), color, maxalpha);
- }
- else
- {
- float clipxy = sqrtf(1 - clipz*clipz);
- const vec2 &scm = sincos360[180/hres];
- loopi(hres)
- {
- const vec2 &sc = sincos360[(360*i)/hres];
- verts[numverts++] = vert(vec(sc.x*clipxy, sc.y*clipxy, clipz), color, minalpha);
- verts[numverts++] = vert(vec(sc.x, sc.y, 0.0f), color, maxalpha);
- verts[numverts++] = vert(vec(sc.x*scm.x - sc.y*scm.y, sc.y*scm.x + sc.x*scm.y, 0.0f), color, maxalpha);
- }
- loopi(hres)
- {
- genface(depth-1, 3*i, 3*i+1, 3*i+2);
- genface(depth-1, 3*i, 3*i+2, 3*((i+1)%hres));
- genface(depth-1, 3*i+2, 3*((i+1)%hres)+1, 3*((i+1)%hres));
- }
- }
-
- if(capsize >= 0)
- {
- GLushort *cap = &indices[numindices];
- int capverts = 0;
- loopi(numverts) if(!verts[i].pos.z) cap[capverts++] = i;
- verts[numverts++] = vert(vec(0.0f, 0.0f, -capsize), color, maxalpha);
- quicksort(cap, capverts, sortcap);
- loopi(capverts)
- {
- int n = capverts-1-i;
- cap[n*3] = cap[n];
- cap[n*3+1] = cap[(n+1)%capverts];
- cap[n*3+2] = numverts-1;
- capindices += 3;
- }
- }
-
- if(!vbuf) glGenBuffers_(1, &vbuf);
- gle::bindvbo(vbuf);
- glBufferData_(GL_ARRAY_BUFFER, numverts*sizeof(vert), verts, GL_STATIC_DRAW);
- DELETEA(verts);
-
- if(!ebuf) glGenBuffers_(1, &ebuf);
- gle::bindebo(ebuf);
- glBufferData_(GL_ELEMENT_ARRAY_BUFFER, (numindices + capindices)*sizeof(GLushort), indices, GL_STATIC_DRAW);
- DELETEA(indices);
- }
-
- void cleanup()
- {
- numverts = numindices = 0;
- if(vbuf) { glDeleteBuffers_(1, &vbuf); vbuf = 0; }
- if(ebuf) { glDeleteBuffers_(1, &ebuf); ebuf = 0; }
- }
-
- void draw()
- {
- float capsize = fogdomecap && fogdomeheight < 1 ? (1 + fogdomeheight) / (1 - fogdomeheight) : -1;
- bvec color = fogdomecolour ? fogdomecolor : fogcolor;
- if(!numverts || lastcolor != color || lastminalpha != fogdomemin || lastmaxalpha != fogdomemax || lastcapsize != capsize || lastclipz != fogdomeclip)
- {
- init(color, min(fogdomemin, fogdomemax), fogdomemax, capsize, fogdomeclip);
- lastcolor = color;
- lastminalpha = fogdomemin;
- lastmaxalpha = fogdomemax;
- lastcapsize = capsize;
- lastclipz = fogdomeclip;
- }
-
- gle::bindvbo(vbuf);
- gle::bindebo(ebuf);
-
- gle::vertexpointer(sizeof(vert), &verts->pos);
- gle::colorpointer(sizeof(vert), &verts->color);
- gle::enablevertex();
- gle::enablecolor();
-
- glDrawRangeElements_(GL_TRIANGLES, 0, numverts-1, numindices + fogdomecap*capindices, GL_UNSIGNED_SHORT, indices);
- xtraverts += numverts;
- glde++;
-
- gle::disablevertex();
- gle::disablecolor();
-
- gle::clearvbo();
- gle::clearebo();
- }
-}
-
-static void drawfogdome(int farplane)
-{
- SETSHADER(skyfog);
-
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
- matrix4 skymatrix = cammatrix, skyprojmatrix;
- skymatrix.settranslation(vec(cammatrix.c).mul(farplane*fogdomeheight*0.5f));
- skymatrix.scale(farplane/2, farplane/2, farplane*(0.5f - fogdomeheight*0.5f));
- skyprojmatrix.mul(projmatrix, skymatrix);
- LOCALPARAM(skymatrix, skyprojmatrix);
-
- fogdome::draw();
-
- glDisable(GL_BLEND);
-}
-
-void cleanupsky()
-{
- fogdome::cleanup();
-}
-
-extern int atmo;
-
-void preloadatmoshaders(bool force = false)
-{
- static bool needatmo = false;
- if(force) needatmo = true;
- if(!atmo || !needatmo) return;
-
- useshaderbyname("atmosphere");
- useshaderbyname("atmosphereglare");
-}
-
-void setupsky()
-{
- preloadatmoshaders(true);
-}
-
-VARFR(atmo, 0, 0, 1, preloadatmoshaders());
-FVARR(atmoplanetsize, 1e-3f, 1, 1e3f);
-FVARR(atmoheight, 1e-3f, 1, 1e3f);
-FVARR(atmobright, 0, 1, 16);
-bvec atmosunlightcolor(0, 0, 0);
-HVARFR(atmosunlight, 0, 0, 0xFFFFFF,
-{
- if(atmosunlight <= 255) atmosunlight |= (atmosunlight<<8) | (atmosunlight<<16);
- atmosunlightcolor = bvec((atmosunlight>>16)&0xFF, (atmosunlight>>8)&0xFF, atmosunlight&0xFF);
-});
-FVARR(atmosunlightscale, 0, 1, 16);
-bvec atmosundiskcolor(0, 0, 0);
-HVARFR(atmosundisk, 0, 0, 0xFFFFFF,
-{
- if(atmosundisk <= 255) atmosundisk |= (atmosundisk<<8) | (atmosundisk<<16);
- atmosundiskcolor = bvec((atmosundisk>>16)&0xFF, (atmosundisk>>8)&0xFF, atmosundisk&0xFF);
-});
-FVARR(atmosundisksize, 0, 12, 90);
-FVARR(atmosundiskcorona, 0, 0.4f, 1);
-FVARR(atmosundiskbright, 0, 1, 16);
-FVARR(atmohaze, 0, 0.1f, 16);
-FVARR(atmodensity, 0, 1, 16);
-FVARR(atmoozone, 0, 1, 16);
-FVARR(atmoalpha, 0, 1, 1);
-
-static void drawatmosphere(int w, float z1clip = 0.0f, float z2clip = 1.0f, int faces = 0x3F)
-{
- if(z1clip >= z2clip) return;
-
- if(glaring) SETSHADER(atmosphereglare);
- else SETSHADER(atmosphere);
-
- matrix4 skymatrix = cammatrix, skyprojmatrix;
- skymatrix.settranslation(0, 0, 0);
- skyprojmatrix.mul(projmatrix, skymatrix);
- LOCALPARAM(skymatrix, skyprojmatrix);
-
- // optical depth scales for 3 different shells of atmosphere - air, haze, ozone
- const float earthradius = 6371e3f, earthairheight = 8.4e3f, earthhazeheight = 1.25e3f, earthozoneheight = 50e3f;
- float planetradius = earthradius*atmoplanetsize;
- vec atmoshells = vec(earthairheight, earthhazeheight, earthozoneheight).mul(atmoheight).add(planetradius).square().sub(planetradius*planetradius);
- LOCALPARAM(opticaldepthparams, vec4(atmoshells, planetradius));
-
- // Henyey-Greenstein approximation, 1/(4pi) * (1 - g^2)/(1 + g^2 - 2gcos)]^1.5
- // Hoffman-Preetham variation uses (1-g)^2 instead of 1-g^2 which avoids excessive glare
- // clamp values near 0 angle to avoid spotlight artifact inside sundisk
- float gm = max(0.95f - 0.2f*atmohaze, 0.65f), miescale = pow((1-gm)*(1-gm)/(4*M_PI), -2.0f/3.0f);
- LOCALPARAMF(mieparams, miescale*(1 + gm*gm), miescale*-2*gm, 1 - (1 - cosf(0.5f*atmosundisksize*(1 - atmosundiskcorona)*RAD)));
-
- static const vec lambda(680e-9f, 550e-9f, 450e-9f),
- k(0.686f, 0.678f, 0.666f),
- ozone(3.426f, 8.298f, 0.356f);
- vec betar = vec(lambda).square().square().recip().mul(1.241e-30f/M_LN2 * atmodensity),
- betam = vec(lambda).recip().square().mul(k).mul(9.072e-17f/M_LN2 * atmohaze),
- betao = vec(ozone).mul(1.5e-7f/M_LN2 * atmoozone);
- LOCALPARAM(betarayleigh, betar);
- LOCALPARAM(betamie, betam);
- LOCALPARAM(betaozone, betao);
-
- // extinction in direction of sun
- float sunoffset = sunlightdir.z*planetradius;
- vec sundepth = vec(atmoshells).add(sunoffset*sunoffset).sqrt().sub(sunoffset);
- vec sunweight = vec(betar).mul(sundepth.x).madd(betam, sundepth.y).madd(betao, sundepth.z - sundepth.x);
- vec sunextinction = vec(sunweight).neg().exp2();
- vec suncolor = atmosunlight ? atmosunlightcolor.tocolor().mul(atmosunlightscale) : sunlightcolor.tocolor().mul(sunlightscale);
- // assume sunlight color is gamma encoded, so decode to linear light, then apply extinction
- vec sunscale = vec(suncolor).square().mul(atmobright * 16).mul(sunextinction);
- float maxsunweight = max(max(sunweight.x, sunweight.y), sunweight.z);
- if(maxsunweight > 127) sunweight.mul(127/maxsunweight);
- sunweight.add(1e-4f);
- LOCALPARAM(sunweight, sunweight);
- LOCALPARAM(sunlight, vec4(sunscale, atmoalpha));
- LOCALPARAM(sundir, sunlightdir);
-
- // invert extinction at zenith to get an approximation of how bright the sun disk should be
- vec zenithdepth = vec(atmoshells).add(planetradius*planetradius).sqrt().sub(planetradius);
- vec zenithweight = vec(betar).mul(zenithdepth.x).madd(betam, zenithdepth.y).madd(betao, zenithdepth.z - zenithdepth.x);
- vec zenithextinction = vec(zenithweight).sub(sunweight).exp2();
- vec diskcolor = (atmosundisk ? atmosundiskcolor.tocolor() : suncolor).square().mul(zenithextinction).mul(atmosundiskbright * (glaring ? 1 : 1.5f)).min(1);
- LOCALPARAM(sundiskcolor, diskcolor);
-
- // convert from view cosine into mu^2 for limb darkening, where mu = sqrt(1 - sin^2) and sin^2 = 1 - cos^2, thus mu^2 = 1 - (1 - cos^2*scale)
- // convert corona offset into scale for mu^2, where sin = (1-corona) and thus mu^2 = 1 - (1-corona^2)
- float sundiskscale = sinf(0.5f*atmosundisksize*RAD);
- float coronamu = 1 - (1-atmosundiskcorona)*(1-atmosundiskcorona);
- if(sundiskscale > 0) LOCALPARAMF(sundiskparams, 1.0f/(sundiskscale*sundiskscale), 1.0f/max(coronamu, 1e-3f));
- else LOCALPARAMF(sundiskparams, 0, 0);
-
- float z1 = 2*w*(z1clip-0.5f), z2 = ceil(2*w*(z2clip-0.5f));
-
- gle::defvertex();
-
- if(glaring)
- {
- if(sundiskscale > 0 && sunlightdir.z*w + sundiskscale > z1 && sunlightdir.z*w - sundiskscale < z2)
- {
- gle::begin(GL_TRIANGLE_FAN);
- vec spoke;
- spoke.orthogonal(sunlightdir);
- spoke.rescale(2*sundiskscale);
- loopi(4) gle::attrib(vec(spoke).rotate(-2*M_PI*i/4.0f, sunlightdir).add(sunlightdir).mul(w));
- xtraverts += gle::end();
- }
- return;
- }
-
- gle::begin(GL_QUADS);
-
- if(faces&0x01)
- {
- gle::attribf(-w, -w, z1);
- gle::attribf(-w, w, z1);
- gle::attribf(-w, w, z2);
- gle::attribf(-w, -w, z2);
- }
-
- if(faces&0x02)
- {
- gle::attribf(w, -w, z2);
- gle::attribf(w, w, z2);
- gle::attribf(w, w, z1);
- gle::attribf(w, -w, z1);
- }
-
- if(faces&0x04)
- {
- gle::attribf(-w, -w, z2);
- gle::attribf( w, -w, z2);
- gle::attribf( w, -w, z1);
- gle::attribf(-w, -w, z1);
- }
-
- if(faces&0x08)
- {
- gle::attribf( w, w, z2);
- gle::attribf(-w, w, z2);
- gle::attribf(-w, w, z1);
- gle::attribf( w, w, z1);
- }
-
- if(z1clip <= 0 && faces&0x10)
- {
- gle::attribf(-w, -w, -w);
- gle::attribf( w, -w, -w);
- gle::attribf( w, w, -w);
- gle::attribf(-w, w, -w);
- }
-
- if(z2clip >= 1 && faces&0x20)
- {
- gle::attribf( w, -w, w);
- gle::attribf(-w, -w, w);
- gle::attribf(-w, w, w);
- gle::attribf( w, w, w);
- }
-
- xtraverts += gle::end();
-}
-
-VARP(sparklyfix, 0, 0, 1);
-VAR(showsky, 0, 1, 1);
-VAR(clipsky, 0, 1, 1);
-
-bool drawskylimits(bool explicitonly)
-{
- nocolorshader->set();
-
- glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
- bool rendered = rendersky(explicitonly);
- glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
-
- return rendered;
-}
-
-void drawskyoutline()
-{
- notextureshader->set();
-
- glDepthMask(GL_FALSE);
- extern int wireframe;
- if(!wireframe)
- {
- enablepolygonoffset(GL_POLYGON_OFFSET_LINE);
- glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
- }
- gle::colorf(0.5f, 0.0f, 0.5f);
- rendersky(true);
- if(!wireframe)
- {
- glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
- disablepolygonoffset(GL_POLYGON_OFFSET_LINE);
- }
- glDepthMask(GL_TRUE);
-}
-
-VAR(clampsky, 0, 1, 1);
-
-static int yawskyfaces(int faces, int yaw, float spin = 0)
-{
- if(spin || yaw%90) return faces&0x0F ? faces | 0x0F : faces;
- static const int faceidxs[3][4] =
- {
- { 3, 2, 0, 1 },
- { 1, 0, 3, 2 },
- { 2, 3, 1, 0 }
- };
- yaw /= 90;
- if(yaw < 1 || yaw > 3) return faces;
- const int *idxs = faceidxs[yaw - 1];
- return (faces & ~0x0F) | (((faces>>idxs[0])&1)<<0) | (((faces>>idxs[1])&1)<<1) | (((faces>>idxs[2])&1)<<2) | (((faces>>idxs[3])&1)<<3);
-}
-
-void drawskybox(int farplane, bool limited, bool force)
-{
- extern int renderedskyfaces, renderedskyclip; // , renderedsky, renderedexplicitsky;
- bool alwaysrender = editmode || !insideworld(camera1->o) || reflecting || force,
- explicitonly = false;
- if(limited)
- {
- explicitonly = alwaysrender || !sparklyfix || refracting;
- if(!drawskylimits(explicitonly) && !alwaysrender) return;
- extern int ati_skybox_bug;
- if(!alwaysrender && !renderedskyfaces && !ati_skybox_bug) explicitonly = false;
- }
- else if(!alwaysrender)
- {
- renderedskyfaces = 0;
- renderedskyclip = INT_MAX;
- for(vtxarray *va = visibleva; va; va = va->next)
- {
- if(va->occluded >= OCCLUDE_BB && va->skyfaces&0x80) continue;
- renderedskyfaces |= va->skyfaces&0x3F;
- if(!(va->skyfaces&0x1F) || camera1->o.z < va->skyclip) renderedskyclip = min(renderedskyclip, va->skyclip);
- else renderedskyclip = 0;
- }
- if(!renderedskyfaces) return;
- }
-
- if(alwaysrender)
- {
- renderedskyfaces = 0x3F;
- renderedskyclip = 0;
- }
-
- float skyclip = clipsky ? max(renderedskyclip-1, 0) : 0, topclip = 1;
- if(reflectz<worldsize)
- {
- if(refracting<0) topclip = 0.5f + 0.5f*(reflectz-camera1->o.z)/float(worldsize);
- else if(reflectz>skyclip) skyclip = reflectz;
- }
- if(skyclip) skyclip = 0.5f + 0.5f*(skyclip-camera1->o.z)/float(worldsize);
-
- if(limited)
- {
- if(explicitonly) glDisable(GL_DEPTH_TEST);
- else glDepthFunc(GL_GEQUAL);
- }
- else glDepthFunc(GL_LEQUAL);
-
- glDepthMask(GL_FALSE);
-
- if(clampsky) glDepthRange(1, 1);
-
- if(!atmo || (skybox[0] && atmoalpha < 1))
- {
- if(glaring) SETSHADER(skyboxglare);
- else SETSHADER(skybox);
-
- gle::color(vec::hexcolor(skyboxcolour));
-
- matrix4 skymatrix = cammatrix, skyprojmatrix;
- skymatrix.settranslation(0, 0, 0);
- skymatrix.rotate_around_z((spinsky*lastmillis/1000.0f+yawsky)*-RAD);
- skyprojmatrix.mul(projmatrix, skymatrix);
- LOCALPARAM(skymatrix, skyprojmatrix);
-
- drawenvbox(farplane/2, skyclip, topclip, yawskyfaces(renderedskyfaces, yawsky, spinsky), sky);
- }
-
- if(atmo)
- {
- if(atmoalpha < 1)
- {
- if(fading) glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- }
-
- drawatmosphere(farplane/2, skyclip, topclip, renderedskyfaces);
-
- if(atmoalpha < 1) glDisable(GL_BLEND);
- }
-
- if(!glaring)
- {
- if(fogdomemax && !fogdomeclouds)
- {
- if(fading) glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
- drawfogdome(farplane);
- }
-
- if(cloudbox[0])
- {
- SETSHADER(skybox);
-
- if(fading) glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
-
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
- gle::color(vec::hexcolor(cloudboxcolour), cloudboxalpha);
-
- matrix4 skymatrix = cammatrix, skyprojmatrix;
- skymatrix.settranslation(0, 0, 0);
- skymatrix.rotate_around_z((spinclouds*lastmillis/1000.0f+yawclouds)*-RAD);
- skyprojmatrix.mul(projmatrix, skymatrix);
- LOCALPARAM(skymatrix, skyprojmatrix);
-
- drawenvbox(farplane/2, skyclip ? skyclip : cloudclip, topclip, yawskyfaces(renderedskyfaces, yawclouds, spinclouds), clouds);
-
- glDisable(GL_BLEND);
- }
-
- if(cloudlayer[0] && cloudheight && renderedskyfaces&(cloudheight < 0 ? 0x1F : 0x2F))
- {
- SETSHADER(skybox);
-
- if(fading) glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
-
- glDisable(GL_CULL_FACE);
-
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
- matrix4 skymatrix = cammatrix, skyprojmatrix;
- skymatrix.settranslation(0, 0, 0);
- skymatrix.rotate_around_z((spincloudlayer*lastmillis/1000.0f+yawcloudlayer)*-RAD);
- skyprojmatrix.mul(projmatrix, skymatrix);
- LOCALPARAM(skymatrix, skyprojmatrix);
-
- drawenvoverlay(farplane/2, cloudoverlay, cloudoffsetx + cloudscrollx * lastmillis/1000.0f, cloudoffsety + cloudscrolly * lastmillis/1000.0f);
-
- glDisable(GL_BLEND);
-
- glEnable(GL_CULL_FACE);
- }
-
- if(fogdomemax && fogdomeclouds)
- {
- if(fading) glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
- drawfogdome(farplane);
- }
- }
-
- if(clampsky) glDepthRange(0, 1);
-
- glDepthMask(GL_TRUE);
-
- if(limited)
- {
- if(explicitonly) glEnable(GL_DEPTH_TEST);
- else glDepthFunc(GL_LESS);
- if(!reflecting && !refracting && !drawtex && editmode && showsky) drawskyoutline();
- }
- else glDepthFunc(GL_LESS);
-}
-
-VARNR(skytexture, useskytexture, 0, 1, 1);
-
-int explicitsky = 0;
-double skyarea = 0;
-
-bool limitsky()
-{
- return (explicitsky && (useskytexture || editmode)) || (sparklyfix && skyarea / (double(worldsize)*double(worldsize)*6) < 0.9);
-}
-
-bool shouldrenderskyenvmap()
-{
- return atmo != 0;
-}
-
-bool shouldclearskyboxglare()
-{
- return atmo && (!skybox[0] || atmoalpha >= 1);
-}
-
generated by cgit v1.2.3 (git 2.46.0) at 2026-02-21 04:56:21 +0000