merge render-refactoring branch into the HEAD

1 files changed, 665 insertions, 0 deletions

diff --git a/src/jake2/render/basic/Warp.java b/src/jake2/render/basic/Warp.java
new file mode 100644
index 0000000..16a1a0e
--- /dev/null
+++ b/src/jake2/render/basic/Warp.java
@@ -0,0 +1,665 @@
+/*
+ * Warp.java
+ * Copyright (C) 2003
+ *
+ * $Id: Warp.java,v 1.2 2006-11-21 00:50:46 cawe Exp $
+ */
+/*
+ Copyright (C) 1997-2001 Id Software, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+ See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+ */
+package jake2.render.basic;
+
+import jake2.Defines;
+import jake2.Globals;
+import jake2.qcommon.Com;
+import jake2.render.*;
+import jake2.util.Math3D;
+
+/**
+ * Warp
+ * 
+ * @author cwei
+ */
+public abstract class Warp extends Model {
+
+    // warpsin.h
+    public static final float[] SIN = { 0f, 0.19633f, 0.392541f, 0.588517f,
+            0.784137f, 0.979285f, 1.17384f, 1.3677f, 1.56072f, 1.75281f,
+            1.94384f, 2.1337f, 2.32228f, 2.50945f, 2.69512f, 2.87916f,
+            3.06147f, 3.24193f, 3.42044f, 3.59689f, 3.77117f, 3.94319f,
+            4.11282f, 4.27998f, 4.44456f, 4.60647f, 4.76559f, 4.92185f,
+            5.07515f, 5.22538f, 5.37247f, 5.51632f, 5.65685f, 5.79398f,
+            5.92761f, 6.05767f, 6.18408f, 6.30677f, 6.42566f, 6.54068f,
+            6.65176f, 6.75883f, 6.86183f, 6.9607f, 7.05537f, 7.14579f,
+            7.23191f, 7.31368f, 7.39104f, 7.46394f, 7.53235f, 7.59623f,
+            7.65552f, 7.71021f, 7.76025f, 7.80562f, 7.84628f, 7.88222f,
+            7.91341f, 7.93984f, 7.96148f, 7.97832f, 7.99036f, 7.99759f, 8f,
+            7.99759f, 7.99036f, 7.97832f, 7.96148f, 7.93984f, 7.91341f,
+            7.88222f, 7.84628f, 7.80562f, 7.76025f, 7.71021f, 7.65552f,
+            7.59623f, 7.53235f, 7.46394f, 7.39104f, 7.31368f, 7.23191f,
+            7.14579f, 7.05537f, 6.9607f, 6.86183f, 6.75883f, 6.65176f,
+            6.54068f, 6.42566f, 6.30677f, 6.18408f, 6.05767f, 5.92761f,
+            5.79398f, 5.65685f, 5.51632f, 5.37247f, 5.22538f, 5.07515f,
+            4.92185f, 4.76559f, 4.60647f, 4.44456f, 4.27998f, 4.11282f,
+            3.94319f, 3.77117f, 3.59689f, 3.42044f, 3.24193f, 3.06147f,
+            2.87916f, 2.69512f, 2.50945f, 2.32228f, 2.1337f, 1.94384f,
+            1.75281f, 1.56072f, 1.3677f, 1.17384f, 0.979285f, 0.784137f,
+            0.588517f, 0.392541f, 0.19633f, 9.79717e-16f, -0.19633f,
+            -0.392541f, -0.588517f, -0.784137f, -0.979285f, -1.17384f,
+            -1.3677f, -1.56072f, -1.75281f, -1.94384f, -2.1337f, -2.32228f,
+            -2.50945f, -2.69512f, -2.87916f, -3.06147f, -3.24193f, -3.42044f,
+            -3.59689f, -3.77117f, -3.94319f, -4.11282f, -4.27998f, -4.44456f,
+            -4.60647f, -4.76559f, -4.92185f, -5.07515f, -5.22538f, -5.37247f,
+            -5.51632f, -5.65685f, -5.79398f, -5.92761f, -6.05767f, -6.18408f,
+            -6.30677f, -6.42566f, -6.54068f, -6.65176f, -6.75883f, -6.86183f,
+            -6.9607f, -7.05537f, -7.14579f, -7.23191f, -7.31368f, -7.39104f,
+            -7.46394f, -7.53235f, -7.59623f, -7.65552f, -7.71021f, -7.76025f,
+            -7.80562f, -7.84628f, -7.88222f, -7.91341f, -7.93984f, -7.96148f,
+            -7.97832f, -7.99036f, -7.99759f, -8f, -7.99759f, -7.99036f,
+            -7.97832f, -7.96148f, -7.93984f, -7.91341f, -7.88222f, -7.84628f,
+            -7.80562f, -7.76025f, -7.71021f, -7.65552f, -7.59623f, -7.53235f,
+            -7.46394f, -7.39104f, -7.31368f, -7.23191f, -7.14579f, -7.05537f,
+            -6.9607f, -6.86183f, -6.75883f, -6.65176f, -6.54068f, -6.42566f,
+            -6.30677f, -6.18408f, -6.05767f, -5.92761f, -5.79398f, -5.65685f,
+            -5.51632f, -5.37247f, -5.22538f, -5.07515f, -4.92185f, -4.76559f,
+            -4.60647f, -4.44456f, -4.27998f, -4.11282f, -3.94319f, -3.77117f,
+            -3.59689f, -3.42044f, -3.24193f, -3.06147f, -2.87916f, -2.69512f,
+            -2.50945f, -2.32228f, -2.1337f, -1.94384f, -1.75281f, -1.56072f,
+            -1.3677f, -1.17384f, -0.979285f, -0.784137f, -0.588517f,
+            -0.392541f, -0.19633f };
+
+    // gl_warp.c -- sky and water polygons
+    //extern model_t *loadmodel; // Model.java
+
+    String skyname;
+
+    float skyrotate;
+
+    float[] skyaxis = { 0, 0, 0 };
+
+    image_t[] sky_images = new image_t[6];
+
+    msurface_t warpface;
+
+    static final int SUBDIVIDE_SIZE = 64;
+
+    void BoundPoly(int numverts, float[][] verts, float[] mins, float[] maxs) {
+        int i, j;
+        float[] v;
+
+        mins[0] = mins[1] = mins[2] = 9999;
+        maxs[0] = maxs[1] = maxs[2] = -9999;
+        for (i = 0; i < numverts; i++) {
+            v = verts[i];
+            for (j = 0; j < 3; j++) {
+                if (v[j] < mins[j])
+                    mins[j] = v[j];
+                if (v[j] > maxs[j])
+                    maxs[j] = v[j];
+            }
+        }
+    }
+
+    void SubdividePolygon(int numverts, float[][] verts) {
+        int i, j, k;
+        float[] mins = { 0, 0, 0 };
+        float[] maxs = { 0, 0, 0 };
+        float m;
+        float[] v = { 0, 0, 0 };
+        float[][] front = new float[64][3];
+        float[][] back = new float[64][3];
+
+        int f, b;
+        float[] dist = new float[64];
+        float frac;
+        float s, t;
+        float[] total = { 0, 0, 0 };
+        float total_s, total_t;
+
+        if (numverts > 60)
+            Com.Error(Defines.ERR_DROP, "numverts = " + numverts);
+
+        BoundPoly(numverts, verts, mins, maxs);
+
+        // x,y und z
+        for (i = 0; i < 3; i++) {
+            m = (mins[i] + maxs[i]) * 0.5f;
+            m = SUBDIVIDE_SIZE * (float) Math.floor(m / SUBDIVIDE_SIZE + 0.5f);
+            if (maxs[i] - m < 8)
+                continue;
+            if (m - mins[i] < 8)
+                continue;
+
+            // cut it
+            for (j = 0; j < numverts; j++) {
+                dist[j] = verts[j][i] - m;
+            }
+
+            // wrap cases
+            dist[j] = dist[0];
+
+            Math3D.VectorCopy(verts[0], verts[numverts]);
+
+            f = b = 0;
+            for (j = 0; j < numverts; j++) {
+                v = verts[j];
+                if (dist[j] >= 0) {
+                    Math3D.VectorCopy(v, front[f]);
+                    f++;
+                }
+                if (dist[j] <= 0) {
+                    Math3D.VectorCopy(v, back[b]);
+                    b++;
+                }
+                if (dist[j] == 0 || dist[j + 1] == 0)
+                    continue;
+
+                if ((dist[j] > 0) != (dist[j + 1] > 0)) {
+                    // clip point
+                    frac = dist[j] / (dist[j] - dist[j + 1]);
+                    for (k = 0; k < 3; k++)
+                        front[f][k] = back[b][k] = v[k] + frac
+                                * (verts[j + 1][k] - v[k]);
+
+                    f++;
+                    b++;
+                }
+            }
+
+            SubdividePolygon(f, front);
+            SubdividePolygon(b, back);
+            return;
+        }
+
+        // add a point in the center to help keep warp valid
+
+        // wird im Konstruktor erschlagen
+        // poly = Hunk_Alloc (sizeof(glpoly_t) + ((numverts-4)+2) *
+        // VERTEXSIZE*sizeof(float));
+
+        // init polys
+        glpoly_t poly = Polygon.create(numverts + 2);
+
+        poly.next = warpface.polys;
+        warpface.polys = poly;
+        Math3D.VectorClear(total);
+        total_s = 0;
+        total_t = 0;
+        for (i = 0; i < numverts; i++) {
+            poly.x(i + 1, verts[i][0]);
+            poly.y(i + 1, verts[i][1]);
+            poly.z(i + 1, verts[i][2]);
+            s = Math3D.DotProduct(verts[i], warpface.texinfo.vecs[0]);
+            t = Math3D.DotProduct(verts[i], warpface.texinfo.vecs[1]);
+
+            total_s += s;
+            total_t += t;
+            Math3D.VectorAdd(total, verts[i], total);
+
+            poly.s1(i + 1, s);
+            poly.t1(i + 1, t);
+        }
+        
+        float scale = 1.0f / numverts; 
+        poly.x(0, total[0] * scale);
+        poly.y(0, total[1] * scale);
+        poly.z(0, total[2] * scale);
+        poly.s1(0, total_s * scale);
+        poly.t1(0, total_t * scale);
+
+        poly.x(i + 1, poly.x(1));
+        poly.y(i + 1, poly.y(1));
+        poly.z(i + 1, poly.z(1));
+        poly.s1(i + 1, poly.s1(1));
+        poly.t1(i + 1, poly.t1(1));
+        poly.s2(i + 1, poly.s2(1));
+        poly.t2(i + 1, poly.t2(1));
+    }
+
+    /*
+     * GL_SubdivideSurface
+     * 
+     * Breaks a polygon up along axial 64 unit boundaries so that turbulent and
+     * sky warps can be done reasonably.
+     */
+    float[][] tmpVerts = new float[64][3];
+
+    void GL_SubdivideSurface(msurface_t fa) {
+        float[][] verts = tmpVerts;
+        float[] vec;
+        warpface = fa;
+        //
+        // convert edges back to a normal polygon
+        //
+        int numverts = 0;
+        for (int i = 0; i < fa.numedges; i++) {
+            int lindex = loadmodel.surfedges[fa.firstedge + i];
+
+            if (lindex > 0)
+                vec = loadmodel.vertexes[loadmodel.edges[lindex].v[0]].position;
+            else
+                vec = loadmodel.vertexes[loadmodel.edges[-lindex].v[1]].position;
+            Math3D.VectorCopy(vec, verts[numverts]);
+            numverts++;
+        }
+        SubdividePolygon(numverts, verts);
+    }
+
+    //	  =========================================================
+
+    //// speed up sin calculations - Ed
+    //	float r_turbsin[] =
+    //	{
+    //		#include "warpsin.h"
+    //	};
+    static final float TURBSCALE = (float) (256.0f / (2 * Math.PI));
+
+    /*
+     * ============= EmitWaterPolys
+     * 
+     * Does a water warp on the pre-fragmented glpoly_t chain =============
+     */
+    void EmitWaterPolys(msurface_t fa) {
+        glpoly_t p, bp;
+        int i;
+        float s = 0;
+        float t = 0;
+        float os, ot;
+        float scroll;
+        float rdt = r_newrefdef.time;
+
+        if ((fa.texinfo.flags & Defines.SURF_FLOWING) != 0)
+            scroll = -64
+                    * ((r_newrefdef.time * 0.5f) - (int) (r_newrefdef.time * 0.5f));
+        else
+            scroll = 0;
+        for (bp = fa.polys; bp != null; bp = bp.next) {
+            p = bp;
+
+            gl.glBegin(GL_TRIANGLE_FAN);
+            for (i = 0; i < p.numverts; i++) {
+                os = p.s1(i);
+                ot = p.t1(i);
+
+                s = os
+                        + Warp.SIN[(int) ((ot * 0.125f + r_newrefdef.time) * TURBSCALE) & 255];
+                s += scroll;
+                s *= (1.0f / 64);
+
+                t = ot
+                        + Warp.SIN[(int) ((os * 0.125f + rdt) * TURBSCALE) & 255];
+                t *= (1.0f / 64);
+
+                gl.glTexCoord2f(s, t);
+                gl.glVertex3f(p.x(i), p.y(i), p.z(i));
+            }
+            gl.glEnd();
+        }
+    }
+
+    //	  ===================================================================
+
+    float[][] skyclip = { { 1, 1, 0 }, { 1, -1, 0 }, { 0, -1, 1 }, { 0, 1, 1 },
+            { 1, 0, 1 }, { -1, 0, 1 } };
+
+    int c_sky;
+
+    // 1 = s, 2 = t, 3 = 2048
+    int[][] st_to_vec = { { 3, -1, 2 }, { -3, 1, 2 },
+
+    { 1, 3, 2 }, { -1, -3, 2 },
+
+    { -2, -1, 3 }, // 0 degrees yaw, look straight up
+            { 2, -1, -3 } // look straight down
+
+    };
+
+    int[][] vec_to_st = { { -2, 3, 1 }, { 2, 3, -1 },
+
+    { 1, 3, 2 }, { -1, 3, -2 },
+
+    { -2, -1, 3 }, { -2, 1, -3 }
+
+    };
+
+    float[][] skymins = new float[2][6];
+
+    float[][] skymaxs = new float[2][6];
+
+    float sky_min, sky_max;
+
+    void DrawSkyPolygon(int nump, float[][] vecs) {
+        int i, j;
+        float[] v = { 0, 0, 0 };
+        float[] av = { 0, 0, 0 };
+        float s, t, dv;
+        int axis;
+        float[] vp;
+
+        c_sky++;
+        // decide which face it maps to
+        Math3D.VectorCopy(Globals.vec3_origin, v);
+        for (i = 0; i < nump; i++) {
+            Math3D.VectorAdd(vecs[i], v, v);
+        }
+        av[0] = Math.abs(v[0]);
+        av[1] = Math.abs(v[1]);
+        av[2] = Math.abs(v[2]);
+        if (av[0] > av[1] && av[0] > av[2]) {
+            if (v[0] < 0)
+                axis = 1;
+            else
+                axis = 0;
+        } else if (av[1] > av[2] && av[1] > av[0]) {
+            if (v[1] < 0)
+                axis = 3;
+            else
+                axis = 2;
+        } else {
+            if (v[2] < 0)
+                axis = 5;
+            else
+                axis = 4;
+        }
+
+        // project new texture coords
+        for (i = 0; i < nump; i++) {
+            j = vec_to_st[axis][2];
+            if (j > 0)
+                dv = vecs[i][j - 1];
+            else
+                dv = -vecs[i][-j - 1];
+            if (dv < 0.001f)
+                continue; // don't divide by zero
+            j = vec_to_st[axis][0];
+            if (j < 0)
+                s = -vecs[i][-j - 1] / dv;
+            else
+                s = vecs[i][j - 1] / dv;
+            j = vec_to_st[axis][1];
+            if (j < 0)
+                t = -vecs[i][-j - 1] / dv;
+            else
+                t = vecs[i][j - 1] / dv;
+
+            if (s < skymins[0][axis])
+                skymins[0][axis] = s;
+            if (t < skymins[1][axis])
+                skymins[1][axis] = t;
+            if (s > skymaxs[0][axis])
+                skymaxs[0][axis] = s;
+            if (t > skymaxs[1][axis])
+                skymaxs[1][axis] = t;
+        }
+    }
+
+    static final float ON_EPSILON = 0.1f; // point on plane side epsilon
+
+    static final int MAX_CLIP_VERTS = 64;
+
+    static final int SIDE_BACK = 1;
+
+    static final int SIDE_FRONT = 0;
+
+    static final int SIDE_ON = 2;
+
+    float[] dists = new float[MAX_CLIP_VERTS];
+
+    int[] sides = new int[MAX_CLIP_VERTS];
+
+    float[][][][] newv = new float[6][2][MAX_CLIP_VERTS][3];
+
+    void ClipSkyPolygon(int nump, float[][] vecs, int stage) {
+        float[] norm;
+        float[] v;
+        boolean front, back;
+        float d, e;
+        int[] newc = { 0, 0 };
+        int i, j;
+
+        if (nump > MAX_CLIP_VERTS - 2)
+            Com.Error(Defines.ERR_DROP, "ClipSkyPolygon: MAX_CLIP_VERTS");
+        if (stage == 6) { // fully clipped, so draw it
+            DrawSkyPolygon(nump, vecs);
+            return;
+        }
+
+        front = back = false;
+        norm = skyclip[stage];
+        for (i = 0; i < nump; i++) {
+            d = Math3D.DotProduct(vecs[i], norm);
+            if (d > ON_EPSILON) {
+                front = true;
+                sides[i] = SIDE_FRONT;
+            } else if (d < -ON_EPSILON) {
+                back = true;
+                sides[i] = SIDE_BACK;
+            } else
+                sides[i] = SIDE_ON;
+            dists[i] = d;
+        }
+
+        if (!front || !back) { // not clipped
+            ClipSkyPolygon(nump, vecs, stage + 1);
+            return;
+        }
+
+        // clip it
+        sides[i] = sides[0];
+        dists[i] = dists[0];
+        Math3D.VectorCopy(vecs[0], vecs[i]);
+        newc[0] = newc[1] = 0;
+
+        for (i = 0; i < nump; i++) {
+            v = vecs[i];
+            switch (sides[i]) {
+            case SIDE_FRONT:
+                Math3D.VectorCopy(v, newv[stage][0][newc[0]]);
+                newc[0]++;
+                break;
+            case SIDE_BACK:
+                Math3D.VectorCopy(v, newv[stage][1][newc[1]]);
+                newc[1]++;
+                break;
+            case SIDE_ON:
+                Math3D.VectorCopy(v, newv[stage][0][newc[0]]);
+                newc[0]++;
+                Math3D.VectorCopy(v, newv[stage][1][newc[1]]);
+                newc[1]++;
+                break;
+            }
+
+            if (sides[i] == SIDE_ON || sides[i + 1] == SIDE_ON
+                    || sides[i + 1] == sides[i])
+                continue;
+
+            d = dists[i] / (dists[i] - dists[i + 1]);
+            for (j = 0; j < 3; j++) {
+                e = v[j] + d * (vecs[i + 1][j] - v[j]);
+                newv[stage][0][newc[0]][j] = e;
+                newv[stage][1][newc[1]][j] = e;
+            }
+            newc[0]++;
+            newc[1]++;
+        }
+
+        // continue
+        ClipSkyPolygon(newc[0], newv[stage][0], stage + 1);
+        ClipSkyPolygon(newc[1], newv[stage][1], stage + 1);
+    }
+
+    float[][] verts = new float[MAX_CLIP_VERTS][3];
+
+    /*
+     * R_AddSkySurface
+     */
+    void R_AddSkySurface(msurface_t fa) {
+        // calculate vertex values for sky box
+        for (glpoly_t p = fa.polys; p != null; p = p.next) {
+            for (int i = 0; i < p.numverts; i++) {
+                verts[i][0] = p.x(i) - r_origin[0];
+                verts[i][1] = p.y(i) - r_origin[1];
+                verts[i][2] = p.z(i) - r_origin[2];
+            }
+            ClipSkyPolygon(p.numverts, verts, 0);
+        }
+    }
+
+    /*
+     * ============== R_ClearSkyBox ==============
+     */
+    void R_ClearSkyBox() {
+        int i;
+
+        for (i = 0; i < 6; i++) {
+            skymins[0][i] = skymins[1][i] = 9999;
+            skymaxs[0][i] = skymaxs[1][i] = -9999;
+        }
+    }
+
+    void MakeSkyVec(float s, float t, int axis) {
+        float[] v = { 0, 0, 0 };
+        float[] b = { 0, 0, 0 };
+        int j, k;
+
+        b[0] = s * 2300;
+        b[1] = t * 2300;
+        b[2] = 2300;
+
+        for (j = 0; j < 3; j++) {
+            k = st_to_vec[axis][j];
+            if (k < 0)
+                v[j] = -b[-k - 1];
+            else
+                v[j] = b[k - 1];
+        }
+
+        // avoid bilerp seam
+        s = (s + 1) * 0.5f;
+        t = (t + 1) * 0.5f;
+
+        if (s < sky_min)
+            s = sky_min;
+        else if (s > sky_max)
+            s = sky_max;
+        if (t < sky_min)
+            t = sky_min;
+        else if (t > sky_max)
+            t = sky_max;
+
+        t = 1.0f - t;
+        gl.glTexCoord2f(s, t);
+        gl.glVertex3f(v[0], v[1], v[2]);
+    }
+
+    /*
+     * ============== R_DrawSkyBox ==============
+     */
+    int[] skytexorder = { 0, 2, 1, 3, 4, 5 };
+
+    void R_DrawSkyBox() {
+        int i;
+
+        if (skyrotate != 0) { // check for no sky at all
+            for (i = 0; i < 6; i++)
+                if (skymins[0][i] < skymaxs[0][i]
+                        && skymins[1][i] < skymaxs[1][i])
+                    break;
+            if (i == 6)
+                return; // nothing visible
+        }
+
+        gl.glPushMatrix();
+        gl.glTranslatef(r_origin[0], r_origin[1], r_origin[2]);
+        gl.glRotatef(r_newrefdef.time * skyrotate, skyaxis[0], skyaxis[1],
+                skyaxis[2]);
+
+        for (i = 0; i < 6; i++) {
+            if (skyrotate != 0) { // hack, forces full sky to draw when rotating
+                skymins[0][i] = -1;
+                skymins[1][i] = -1;
+                skymaxs[0][i] = 1;
+                skymaxs[1][i] = 1;
+            }
+
+            if (skymins[0][i] >= skymaxs[0][i]
+                    || skymins[1][i] >= skymaxs[1][i])
+                continue;
+
+            GL_Bind(sky_images[skytexorder[i]].texnum);
+
+            gl.glBegin(GL_QUADS);
+            MakeSkyVec(skymins[0][i], skymins[1][i], i);
+            MakeSkyVec(skymins[0][i], skymaxs[1][i], i);
+            MakeSkyVec(skymaxs[0][i], skymaxs[1][i], i);
+            MakeSkyVec(skymaxs[0][i], skymins[1][i], i);
+            gl.glEnd();
+        }
+        gl.glPopMatrix();
+    }
+
+    /*
+     * ============ R_SetSky ============
+     */
+    // 3dstudio environment map names
+    String[] suf = { "rt", "bk", "lf", "ft", "up", "dn" };
+
+    public void R_SetSky(String name, float rotate, float[] axis) {
+        assert (axis.length == 3) : "vec3_t bug";
+        int i;
+        String pathname;
+
+        //		strncpy (skyname, name, sizeof(skyname)-1);
+        skyname = name;
+
+        skyrotate = rotate;
+        Math3D.VectorCopy(axis, skyaxis);
+
+        for (i = 0; i < 6; i++) {
+            // chop down rotating skies for less memory
+            if (gl_skymip.value != 0 || skyrotate != 0)
+                gl_picmip.value++;
+
+            if (qglColorTableEXT && gl_ext_palettedtexture.value != 0) {
+                //	Com_sprintf (pathname, sizeof(pathname), "env/%s%s.pcx",
+                // skyname, suf[i]);
+                pathname = "env/" + skyname + suf[i] + ".pcx";
+            } else {
+                // Com_sprintf (pathname, sizeof(pathname), "env/%s%s.tga",
+                // skyname, suf[i]);
+                pathname = "env/" + skyname + suf[i] + ".tga";
+            }
+
+            sky_images[i] = GL_FindImage(pathname, it_sky);
+
+            if (sky_images[i] == null)
+                sky_images[i] = r_notexture;
+
+            if (gl_skymip.value != 0 || skyrotate != 0) { // take less memory
+                gl_picmip.value--;
+                sky_min = 1.0f / 256;
+                sky_max = 255.0f / 256;
+            } else {
+                sky_min = 1.0f / 512;
+                sky_max = 511.0f / 512;
+            }
+        }
+    }
+
+}
\ No newline at end of file