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-rw-r--r--src/jake2/render/common/Light.java685
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diff --git a/src/jake2/render/common/Light.java b/src/jake2/render/common/Light.java
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+/*
+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.
+
+*/
+
+// Created on 20.08.2006 by RST.
+
+// $Id: Light.java,v 1.1 2006-10-31 13:06:32 salomo Exp $
+
+package jake2.render.common;
+
+
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
+import java.util.Arrays;
+
+import jake2.*;
+import jake2.client.*;
+import jake2.game.*;
+import jake2.qcommon.*;
+import jake2.render.*;
+import jake2.server.*;
+import jake2.util.Math3D;
+import jake2.util.Vec3Cache;
+
+public abstract class Light extends Warp {
+
+ protected float[] pointcolor = { 0, 0, 0 }; // vec3_t
+
+ protected cplane_t lightplane; // used as shadow plane
+
+ protected float[] lightspot = { 0, 0, 0 }; // vec3_t
+
+ protected float[] s_blocklights = new float[34 * 34 * 3];
+
+ protected int r_dlightframecount;
+
+ protected final float[] impact = { 0, 0, 0 };
+
+
+ public static final int DLIGHT_CUTOFF = 64;
+
+ /**
+ * R_AddDynamicLights
+ */
+ protected void R_AddDynamicLights(msurface_t surf) {
+ int sd, td;
+ float fdist, frad, fminlight;
+ int s, t;
+ dlight_t dl;
+ float[] pfBL;
+ float fsacc, ftacc;
+
+ int smax = (surf.extents[0] >> 4) + 1;
+ int tmax = (surf.extents[1] >> 4) + 1;
+ mtexinfo_t tex = surf.texinfo;
+
+ float local0, local1;
+ for (int lnum = 0; lnum < r_newrefdef.num_dlights; lnum++) {
+ if ((surf.dlightbits & (1 << lnum)) == 0)
+ continue; // not lit by this light
+
+ dl = r_newrefdef.dlights[lnum];
+ frad = dl.intensity;
+ fdist = Math3D.DotProduct(dl.origin, surf.plane.normal)
+ - surf.plane.dist;
+ frad -= Math.abs(fdist);
+ // rad is now the highest intensity on the plane
+
+ fminlight = DLIGHT_CUTOFF; // FIXME: make configurable?
+ if (frad < fminlight)
+ continue;
+ fminlight = frad - fminlight;
+
+ for (int i = 0; i < 3; i++) {
+ impact[i] = dl.origin[i] - surf.plane.normal[i] * fdist;
+ }
+
+ local0 = Math3D.DotProduct(impact, tex.vecs[0]) + tex.vecs[0][3]
+ - surf.texturemins[0];
+ local1 = Math3D.DotProduct(impact, tex.vecs[1]) + tex.vecs[1][3]
+ - surf.texturemins[1];
+
+ pfBL = s_blocklights;
+ int pfBLindex = 0;
+ for (t = 0, ftacc = 0; t < tmax; t++, ftacc += 16) {
+ td = (int) (local1 - ftacc);
+ if (td < 0)
+ td = -td;
+
+ for (s = 0, fsacc = 0; s < smax; s++, fsacc += 16, pfBLindex += 3) {
+ sd = (int) (local0 - fsacc);
+
+ if (sd < 0)
+ sd = -sd;
+
+ if (sd > td)
+ fdist = sd + (td >> 1);
+ else
+ fdist = td + (sd >> 1);
+
+ if (fdist < fminlight) {
+ pfBL[pfBLindex + 0] += (frad - fdist) * dl.color[0];
+ pfBL[pfBLindex + 1] += (frad - fdist) * dl.color[1];
+ pfBL[pfBLindex + 2] += (frad - fdist) * dl.color[2];
+ }
+ }
+ }
+ }
+ }
+
+ // replaces the goto jump
+ private Throwable gotoStore = new Throwable();
+
+ /**
+ * R_BuildLightMap
+ *
+ * Combine and scale multiple lightmaps into the floating format in
+ * blocklights
+ */
+
+ protected void R_BuildLightMap(msurface_t surf, IntBuffer dest, int stride) {
+ int r, g, b, a, max;
+ int i, j;
+ int nummaps;
+ float[] bl;
+ // lightstyle_t style;
+
+ if ((surf.texinfo.flags & (Defines.SURF_SKY | Defines.SURF_TRANS33
+ | Defines.SURF_TRANS66 | Defines.SURF_WARP)) != 0)
+ Com.Error(Defines.ERR_DROP,
+ "R_BuildLightMap called for non-lit surface");
+
+ int smax = (surf.extents[0] >> 4) + 1;
+ int tmax = (surf.extents[1] >> 4) + 1;
+ int size = smax * tmax;
+ if (size > ((s_blocklights.length * Defines.SIZE_OF_FLOAT) >> 4))
+ Com.Error(Defines.ERR_DROP, "Bad s_blocklights size");
+
+ try {
+ // set to full bright if no light data
+ if (surf.samples == null) {
+
+ for (i = 0; i < size * 3; i++)
+ s_blocklights[i] = 255;
+
+ // goto store;
+ throw gotoStore;
+ }
+
+ // count the # of maps
+ for (nummaps = 0; nummaps < Defines.MAXLIGHTMAPS
+ && surf.styles[nummaps] != (byte) 255; nummaps++);
+
+ ByteBuffer lightmap = surf.samples;
+ int lightmapIndex = 0;
+
+ // add all the lightmaps
+ float scale0;
+ float scale1;
+ float scale2;
+ if (nummaps == 1) {
+ int maps;
+
+ for (maps = 0; maps < Defines.MAXLIGHTMAPS
+ && surf.styles[maps] != (byte) 255; maps++) {
+ bl = s_blocklights;
+ int blp = 0;
+
+ // for (i = 0; i < 3; i++)
+ // scale[i] = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[i];
+
+ scale0 = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[0];
+ scale1 = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[1];
+ scale2 = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[2];
+
+ if (scale0 == 1.0F && scale1 == 1.0F && scale2 == 1.0F) {
+ for (i = 0; i < size; i++) {
+ bl[blp++] = lightmap.get(lightmapIndex++) & 0xFF;
+ bl[blp++] = lightmap.get(lightmapIndex++) & 0xFF;
+ bl[blp++] = lightmap.get(lightmapIndex++) & 0xFF;
+ }
+ } else {
+ for (i = 0; i < size; i++) {
+ bl[blp++] = (lightmap.get(lightmapIndex++) & 0xFF) * scale0;
+ bl[blp++] = (lightmap.get(lightmapIndex++) & 0xFF) * scale1;
+ bl[blp++] = (lightmap.get(lightmapIndex++) & 0xFF) * scale2;
+ }
+ }
+ // lightmap += size*3; // skip to next lightmap
+ }
+ } else {
+ int maps;
+
+ Arrays.fill(s_blocklights, 0, size * 3, 0.0f);
+
+ for (maps = 0; maps < Defines.MAXLIGHTMAPS
+ && surf.styles[maps] != (byte) 255; maps++) {
+ bl = s_blocklights;
+ int blp = 0;
+
+ // for (i = 0; i < 3; i++)
+ // scale[i] = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[i];
+ scale0 = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[0];
+ scale1 = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[1];
+ scale2 = gl_modulate.value * r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb[2];
+
+ if (scale0 == 1.0F && scale1 == 1.0F && scale2 == 1.0F) {
+ for (i = 0; i < size; i++) {
+ bl[blp++] += lightmap.get(lightmapIndex++) & 0xFF;
+ bl[blp++] += lightmap.get(lightmapIndex++) & 0xFF;
+ bl[blp++] += lightmap.get(lightmapIndex++) & 0xFF;
+ }
+ } else {
+ for (i = 0; i < size; i++) {
+ bl[blp++] += (lightmap.get(lightmapIndex++) & 0xFF) * scale0;
+ bl[blp++] += (lightmap.get(lightmapIndex++) & 0xFF) * scale1;
+ bl[blp++] += (lightmap.get(lightmapIndex++) & 0xFF) * scale2;
+ }
+ }
+ // lightmap += size*3; // skip to next lightmap
+ }
+ }
+
+ // add all the dynamic lights
+ if (surf.dlightframe == r_framecount)
+ R_AddDynamicLights(surf);
+
+ // label store:
+ } catch (Throwable store) {
+ }
+
+ // put into texture format
+ stride -= smax;
+ bl = s_blocklights;
+ int blp = 0;
+
+ int monolightmap = gl_monolightmap.string.charAt(0);
+
+ int destp = 0;
+
+ if (monolightmap == '0') {
+ for (i = 0; i < tmax; i++, destp += stride) {
+ // dest.position(destp);
+
+ for (j = 0; j < smax; j++) {
+
+ r = (int) bl[blp++];
+ g = (int) bl[blp++];
+ b = (int) bl[blp++];
+
+ // catch negative lights
+ if (r < 0)
+ r = 0;
+ if (g < 0)
+ g = 0;
+ if (b < 0)
+ b = 0;
+
+ /*
+ * * determine the brightest of the three color components
+ */
+ if (r > g)
+ max = r;
+ else
+ max = g;
+ if (b > max)
+ max = b;
+
+ /*
+ * * alpha is ONLY used for the mono lightmap case. For this
+ * reason * we set it to the brightest of the color
+ * components so that * things don't get too dim.
+ */
+ a = max;
+
+ /*
+ * * rescale all the color components if the intensity of
+ * the greatest * channel exceeds 1.0
+ */
+ if (max > 255) {
+ float t = 255.0F / max;
+
+ r = (int) (r * t);
+ g = (int) (g * t);
+ b = (int) (b * t);
+ a = (int) (a * t);
+ }
+ // r &= 0xFF; g &= 0xFF; b &= 0xFF; a &= 0xFF;
+ dest.put(destp++, (a << 24) | (b << 16) | (g << 8) | r);
+ }
+ }
+ } else {
+ for (i = 0; i < tmax; i++, destp += stride) {
+ // dest.position(destp);
+
+ for (j = 0; j < smax; j++) {
+
+ r = (int) bl[blp++];
+ g = (int) bl[blp++];
+ b = (int) bl[blp++];
+
+ // catch negative lights
+ if (r < 0)
+ r = 0;
+ if (g < 0)
+ g = 0;
+ if (b < 0)
+ b = 0;
+
+ /*
+ * * determine the brightest of the three color components
+ */
+ if (r > g)
+ max = r;
+ else
+ max = g;
+ if (b > max)
+ max = b;
+
+ /*
+ * * alpha is ONLY used for the mono lightmap case. For this
+ * reason * we set it to the brightest of the color
+ * components so that * things don't get too dim.
+ */
+ a = max;
+
+ /*
+ * * rescale all the color components if the intensity of
+ * the greatest * channel exceeds 1.0
+ */
+ if (max > 255) {
+ float t = 255.0F / max;
+
+ r = (int) (r * t);
+ g = (int) (g * t);
+ b = (int) (b * t);
+ a = (int) (a * t);
+ }
+
+ /*
+ * * So if we are doing alpha lightmaps we need to set the
+ * R, G, and B * components to 0 and we need to set alpha to
+ * 1-alpha.
+ */
+ switch (monolightmap) {
+ case 'L':
+ case 'I':
+ r = a;
+ g = b = 0;
+ break;
+ case 'C':
+ // try faking colored lighting
+ a = 255 - ((r + g + b) / 3);
+ float af = a / 255.0f;
+ r *= af;
+ g *= af;
+ b *= af;
+ break;
+ case 'A':
+ default:
+ r = g = b = 0;
+ a = 255 - a;
+ break;
+ }
+ // r &= 0xFF; g &= 0xFF; b &= 0xFF; a &= 0xFF;
+ dest.put(destp++, (a << 24) | (b << 16) | (g << 8) | r);
+ }
+ }
+ }
+ }
+
+
+ // stack variable
+ private final float[] end = { 0, 0, 0 };
+
+ /**
+ * R_LightPoint
+ */
+ protected void R_LightPoint(float[] p, float[] color) {
+ assert (p.length == 3) : "vec3_t bug";
+ assert (color.length == 3) : "rgb bug";
+
+ if (r_worldmodel.lightdata == null) {
+ color[0] = color[1] = color[2] = 1.0f;
+ return;
+ }
+
+ end[0] = p[0];
+ end[1] = p[1];
+ end[2] = p[2] - 2048;
+
+ float r = RecursiveLightPoint(r_worldmodel.nodes[0], p, end);
+
+ if (r == -1) {
+ Math3D.VectorCopy(Globals.vec3_origin, color);
+ } else {
+ Math3D.VectorCopy(pointcolor, color);
+ }
+
+ //
+ // add dynamic lights
+ //
+ dlight_t dl;
+ float add;
+ for (int lnum = 0; lnum < r_newrefdef.num_dlights; lnum++) {
+ dl = r_newrefdef.dlights[lnum];
+
+ Math3D.VectorSubtract(currententity.origin, dl.origin, end);
+ add = dl.intensity - Math3D.VectorLength(end);
+ add *= (1.0f / 256);
+ if (add > 0) {
+ Math3D.VectorMA(color, add, dl.color, color);
+ }
+ }
+ Math3D.VectorScale(color, gl_modulate.value, color);
+ }
+
+ /**
+ * RecursiveLightPoint
+ *
+ * @param node
+ * @param start
+ * @param end
+ * @return
+ */
+ protected int RecursiveLightPoint(mnode_t node, float[] start, float[] end) {
+ if (node.contents != -1)
+ return -1; // didn't hit anything
+
+ // calculate mid point
+
+ // FIXME: optimize for axial
+ cplane_t plane = node.plane;
+ float front = Math3D.DotProduct(start, plane.normal) - plane.dist;
+ float back = Math3D.DotProduct(end, plane.normal) - plane.dist;
+ boolean side = (front < 0);
+ int sideIndex = (side) ? 1 : 0;
+
+ if ((back < 0) == side)
+ return RecursiveLightPoint(node.children[sideIndex], start, end);
+
+ float frac = front / (front - back);
+ float[] mid = Vec3Cache.get();
+ mid[0] = start[0] + (end[0] - start[0]) * frac;
+ mid[1] = start[1] + (end[1] - start[1]) * frac;
+ mid[2] = start[2] + (end[2] - start[2]) * frac;
+
+ // go down front side
+ int r = RecursiveLightPoint(node.children[sideIndex], start, mid);
+ if (r >= 0) {
+ Vec3Cache.release(); // mid
+ return r; // hit something
+ }
+
+ if ((back < 0) == side) {
+ Vec3Cache.release(); // mid
+ return -1; // didn't hit anuthing
+ }
+
+ // check for impact on this node
+ Math3D.VectorCopy(mid, lightspot);
+ lightplane = plane;
+ int surfIndex = node.firstsurface;
+
+ msurface_t surf;
+ int s, t, ds, dt;
+ mtexinfo_t tex;
+ ByteBuffer lightmap;
+ int maps;
+ for (int i = 0; i < node.numsurfaces; i++, surfIndex++) {
+ surf = r_worldmodel.surfaces[surfIndex];
+
+ if ((surf.flags & (Defines.SURF_DRAWTURB | Defines.SURF_DRAWSKY)) != 0)
+ continue; // no lightmaps
+
+ tex = surf.texinfo;
+
+ s = (int) (Math3D.DotProduct(mid, tex.vecs[0]) + tex.vecs[0][3]);
+ t = (int) (Math3D.DotProduct(mid, tex.vecs[1]) + tex.vecs[1][3]);
+
+ if (s < surf.texturemins[0] || t < surf.texturemins[1])
+ continue;
+
+ ds = s - surf.texturemins[0];
+ dt = t - surf.texturemins[1];
+
+ if (ds > surf.extents[0] || dt > surf.extents[1])
+ continue;
+
+ if (surf.samples == null)
+ return 0;
+
+ ds >>= 4;
+ dt >>= 4;
+
+ lightmap = surf.samples;
+ int lightmapIndex = 0;
+
+ Math3D.VectorCopy(Globals.vec3_origin, pointcolor);
+ if (lightmap != null) {
+ float[] rgb;
+ lightmapIndex += 3 * (dt * ((surf.extents[0] >> 4) + 1) + ds);
+
+ float scale0, scale1, scale2;
+ for (maps = 0; maps < Defines.MAXLIGHTMAPS
+ && surf.styles[maps] != (byte) 255; maps++) {
+ rgb = r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].rgb;
+ scale0 = gl_modulate.value * rgb[0];
+ scale1 = gl_modulate.value * rgb[1];
+ scale2 = gl_modulate.value * rgb[2];
+
+ pointcolor[0] += (lightmap.get(lightmapIndex + 0) & 0xFF)
+ * scale0 * (1.0f / 255);
+ pointcolor[1] += (lightmap.get(lightmapIndex + 1) & 0xFF)
+ * scale1 * (1.0f / 255);
+ pointcolor[2] += (lightmap.get(lightmapIndex + 2) & 0xFF)
+ * scale2 * (1.0f / 255);
+ lightmapIndex += 3 * ((surf.extents[0] >> 4) + 1)
+ * ((surf.extents[1] >> 4) + 1);
+ }
+ }
+ Vec3Cache.release(); // mid
+ return 1;
+ }
+
+ // go down back side
+ r = RecursiveLightPoint(node.children[1 - sideIndex], mid, end);
+ Vec3Cache.release(); // mid
+ return r;
+ }
+
+ /**
+ * R_MarkLights
+ */
+ protected void R_MarkLights(dlight_t light, int bit, mnode_t node) {
+ if (node.contents != -1)
+ return;
+
+ cplane_t splitplane = node.plane;
+ float dist = Math3D.DotProduct(light.origin, splitplane.normal)
+ - splitplane.dist;
+
+ if (dist > light.intensity - DLIGHT_CUTOFF) {
+ R_MarkLights(light, bit, node.children[0]);
+ return;
+ }
+ if (dist < -light.intensity + DLIGHT_CUTOFF) {
+ R_MarkLights(light, bit, node.children[1]);
+ return;
+ }
+
+ // mark the polygons
+ msurface_t surf;
+ int sidebit;
+ for (int i = 0; i < node.numsurfaces; i++) {
+
+ surf = r_worldmodel.surfaces[node.firstsurface + i];
+
+ /*
+ * cwei bugfix for dlight behind the walls
+ */
+ dist = Math3D.DotProduct(light.origin, surf.plane.normal)
+ - surf.plane.dist;
+ sidebit = (dist >= 0) ? 0 : Defines.SURF_PLANEBACK;
+ if ((surf.flags & Defines.SURF_PLANEBACK) != sidebit)
+ continue;
+ /*
+ * cwei bugfix end
+ */
+
+ if (surf.dlightframe != r_dlightframecount) {
+ surf.dlightbits = 0;
+ surf.dlightframe = r_dlightframecount;
+ }
+ surf.dlightbits |= bit;
+ }
+
+ R_MarkLights(light, bit, node.children[0]);
+ R_MarkLights(light, bit, node.children[1]);
+ }
+
+ /**
+ * R_SetCacheState
+ */
+ protected void R_SetCacheState(msurface_t surf) {
+ for (int maps = 0; maps < Defines.MAXLIGHTMAPS
+ && surf.styles[maps] != (byte) 255; maps++) {
+ surf.cached_light[maps] = r_newrefdef.lightstyles[surf.styles[maps] & 0xFF].white;
+ }
+ }
+
+
+ /**
+ * R_PushDlights
+ */
+ protected void R_PushDlights() {
+ if (gl_flashblend.value != 0)
+ return;
+
+ r_dlightframecount = r_framecount + 1; // because the count hasn't
+ // advanced yet for this frame
+ dlight_t l;
+ for (int i = 0; i < r_newrefdef.num_dlights; i++) {
+ l = r_newrefdef.dlights[i];
+ R_MarkLights(l, 1 << i, r_worldmodel.nodes[0]);
+ }
+ }
+
+
+ /*
+ * =============================================================================
+ *
+ * DYNAMIC LIGHTS BLEND RENDERING
+ *
+ * =============================================================================
+ */
+
+ void R_RenderDlight(dlight_t light) {
+ float rad = light.intensity * 0.35f;
+ float[] v = Vec3Cache.get();
+ Math3D.VectorSubtract(light.origin, r_origin, v);
+
+ ggl.glBegin(ggl.GL_TRIANGLE_FAN);
+ ggl.glColor3f(light.color[0] * 0.2f, light.color[1] * 0.2f,
+ light.color[2] * 0.2f);
+ for (int i = 0; i < 3; i++)
+ v[i] = light.origin[i] - vpn[i] * rad;
+
+ ggl.glVertex3f(v[0], v[1], v[2]);
+ ggl.glColor3f(0, 0, 0);
+ float a;
+ for (int i = 16; i >= 0; i--) {
+ a = (float) (i / 16.0f * Math.PI * 2);
+ for (int j = 0; j < 3; j++)
+ v[j] = (float) (light.origin[j] + vright[j] * Math.cos(a) * rad + vup[j]
+ * Math.sin(a) * rad);
+ ggl.glVertex3f(v[0], v[1], v[2]);
+ }
+ ggl.glEnd();
+ Vec3Cache.release();
+ }
+
+
+ /**
+ * ============= R_RenderDlights =============
+ */
+ public void R_RenderDlights() {
+ if (gl_flashblend.value == 0)
+ return;
+
+ r_dlightframecount = r_framecount + 1; // because the count hasn't
+ // advanced yet for this frame
+ ggl.glDepthMask(false);
+ ggl.glDisable(ggl.GL_TEXTURE_2D);
+ ggl.glShadeModel(ggl.GL_SMOOTH);
+ ggl.glDisable(ggl.GL_BLEND);
+ ggl.glBlendFunc(ggl.GL_ONE, ggl.GL_ONE);
+
+ for (int i = 0; i < r_newrefdef.num_dlights; i++) {
+ R_RenderDlight(r_newrefdef.dlights[i]);
+ }
+
+ ggl.glColor3f(1, 1, 1);
+ ggl.glDisable(ggl.GL_BLEND);
+ ggl.glDisable(ggl.GL_TEXTURE_2D);
+ ggl.glBlendFunc(ggl.GL_SRC_ALPHA, ggl.GL_ONE_MINUS_SRC_ALPHA);
+ ggl.glDepthMask(true);
+ }
+}
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