]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - r_light.c
no time to explain, more changes on the path to q3bsp support
[xonotic/darkplaces.git] / r_light.c
index d8708134d3aad0f207ed0e166a01116231270fd6..5cc2697948a874ac0fd021b97ea179db61d80b51 100644 (file)
--- a/r_light.c
+++ b/r_light.c
@@ -141,18 +141,11 @@ void R_BuildLightList(void)
 void R_DrawCoronas(void)
 {
        int i;
-       rmeshstate_t m;
-       float scale, viewdist, diff[3], dist;
+       float cscale, scale, viewdist, dist;
        rdlight_t *rd;
        if (!r_coronas.integer)
                return;
-       memset(&m, 0, sizeof(m));
-       m.blendfunc1 = GL_ONE;
-       m.blendfunc2 = GL_ONE;
-       m.depthdisable = true; // magic
-       m.tex[0] = R_GetTexture(lightcorona);
        R_Mesh_Matrix(&r_identitymatrix);
-       R_Mesh_State(&m);
        viewdist = DotProduct(r_origin, vpn);
        for (i = 0;i < r_numdlights;i++)
        {
@@ -160,19 +153,14 @@ void R_DrawCoronas(void)
                dist = (DotProduct(rd->origin, vpn) - viewdist);
                if (dist >= 24.0f && CL_TraceLine(rd->origin, r_origin, NULL, NULL, 0, true, NULL) == 1)
                {
-                       scale = r_colorscale * (1.0f / 131072.0f);
-                       if (gl_flashblend.integer)
-                               scale *= 4.0f;
-                       if (fogenabled)
-                       {
-                               VectorSubtract(rd->origin, r_origin, diff);
-                               scale *= 1 - exp(fogdensity/DotProduct(diff,diff));
-                       }
-                       GL_Color(rd->light[0] * scale, rd->light[1] * scale, rd->light[2] * scale, 1);
+                       cscale = (1.0f / 131072.0f);
                        scale = rd->cullradius * 0.25f;
                        if (gl_flashblend.integer)
+                       {
+                               cscale *= 4.0f;
                                scale *= 2.0f;
-                       R_DrawSpriteMesh(rd->origin, vright, vup, scale, -scale, -scale, scale);
+                       }
+                       R_DrawSprite(GL_ONE, GL_ONE, lightcorona, true, rd->origin, vright, vup, scale, -scale, -scale, scale, rd->light[0] * cscale, rd->light[1] * cscale, rd->light[2] * cscale, 1);
                }
        }
 }
@@ -185,255 +173,111 @@ DYNAMIC LIGHTS
 =============================================================================
 */
 
+static int lightpvsbytes;
+static qbyte lightpvs[(MAX_MAP_LEAFS+7)>>3];
+
 /*
 =============
 R_MarkLights
 =============
 */
-static void R_OldMarkLights (entity_render_t *ent, vec3_t lightorigin, rdlight_t *rd, int bit, int bitindex, mnode_t *node)
+static void R_RecursiveMarkLights(entity_render_t *ent, vec3_t lightorigin, rdlight_t *rd, int bit, int bitindex, mnode_t *node, qbyte *pvs, int pvsbits)
 {
-       float ndist, maxdist;
-       msurface_t *surf;
-       int i, *surfacepvsframes;
-       int d, impacts, impactt;
-       float dist, dist2, impact[3];
-
-       if (!r_dynamic.integer)
-               return;
+       int i;
+       mleaf_t *leaf;
+       float dist;
 
        // for comparisons to minimum acceptable light
-       maxdist = rd->cullradius2;
-
-       surfacepvsframes = ent->model->surfacepvsframes;
-loc0:
-       if (node->contents < 0)
-               return;
-
-       ndist = PlaneDiff(lightorigin, node->plane);
-
-       if (ndist > rd->cullradius)
-       {
-               node = node->children[0];
-               goto loc0;
-       }
-       if (ndist < -rd->cullradius)
-       {
-               node = node->children[1];
-               goto loc0;
-       }
-
-// mark the polygons
-       surf = ent->model->surfaces + node->firstsurface;
-       for (i = 0;i < node->numsurfaces;i++, surf++)
+       while(node->contents >= 0)
        {
-               if (surfacepvsframes[surf->number] != ent->model->pvsframecount)
-                       continue;
-               dist = ndist;
-               if (surf->flags & SURF_PLANEBACK)
-                       dist = -dist;
-
-               if (dist < -0.25f && !(surf->flags & SURF_LIGHTBOTHSIDES))
-                       continue;
-
-               dist2 = dist * dist;
-               if (dist2 >= maxdist)
-                       continue;
-
-               if (node->plane->type < 3)
-               {
-                       VectorCopy(lightorigin, impact);
-                       impact[node->plane->type] -= dist;
-               }
+               dist = PlaneDiff(lightorigin, node->plane);
+               if (dist > rd->cullradius)
+                       node = node->children[0];
                else
                {
-                       impact[0] = lightorigin[0] - surf->plane->normal[0] * dist;
-                       impact[1] = lightorigin[1] - surf->plane->normal[1] * dist;
-                       impact[2] = lightorigin[2] - surf->plane->normal[2] * dist;
-               }
-
-               impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
-
-               d = bound(0, impacts, surf->extents[0] + 16) - impacts;
-               dist2 += d * d;
-               if (dist2 > maxdist)
-                       continue;
-
-               impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
-
-               d = bound(0, impactt, surf->extents[1] + 16) - impactt;
-               dist2 += d * d;
-               if (dist2 > maxdist)
-                       continue;
-
-               if (surf->dlightframe != r_framecount) // not dynamic until now
-               {
-                       surf->dlightbits[0] = surf->dlightbits[1] = surf->dlightbits[2] = surf->dlightbits[3] = surf->dlightbits[4] = surf->dlightbits[5] = surf->dlightbits[6] = surf->dlightbits[7] = 0;
-                       surf->dlightframe = r_framecount;
-                       if (r_dlightmap.integer)
-                               surf->cached_dlight = true;
+                       if (dist >= -rd->cullradius)
+                               R_RecursiveMarkLights(ent, lightorigin, rd, bit, bitindex, node->children[0], pvs, pvsbits);
+                       node = node->children[1];
                }
-               surf->dlightbits[bitindex] |= bit;
        }
 
-       if (node->children[0]->contents >= 0)
+       // check if leaf is visible according to pvs
+       leaf = (mleaf_t *)node;
+       i = (leaf - ent->model->brushq1.leafs) - 1;
+       if (leaf->nummarksurfaces && (i >= pvsbits || pvs[i >> 3] & (1 << (i & 7))))
        {
-               if (node->children[1]->contents >= 0)
+               int *surfacepvsframes, d, impacts, impactt;
+               float sdist, maxdist, dist2, impact[3];
+               msurface_t *surf;
+               // mark the polygons
+               maxdist = rd->cullradius2;
+               surfacepvsframes = ent->model->brushq1.surfacepvsframes;
+               for (i = 0;i < leaf->nummarksurfaces;i++)
                {
-                       R_OldMarkLights (ent, lightorigin, rd, bit, bitindex, node->children[0]);
-                       node = node->children[1];
-                       goto loc0;
-               }
-               else
-               {
-                       node = node->children[0];
-                       goto loc0;
-               }
-       }
-       else if (node->children[1]->contents >= 0)
-       {
-               node = node->children[1];
-               goto loc0;
-       }
-}
-
-
-static void R_VisMarkLights (entity_render_t *ent, rdlight_t *rd, int bit, int bitindex)
-{
-       static int lightframe = 0;
-       mleaf_t *pvsleaf;
-       vec3_t lightorigin;
-       model_t *model;
-       int i, k, m, c, leafnum, *surfacepvsframes, *mark;
-       msurface_t *surf;
-       mleaf_t *leaf;
-       qbyte *in;
-       int row;
-       float low[3], high[3], dist, maxdist;
+                       if (surfacepvsframes[leaf->firstmarksurface[i]] != ent->model->brushq1.pvsframecount)
+                               continue;
+                       surf = ent->model->brushq1.surfaces + leaf->firstmarksurface[i];
+                       dist = sdist = PlaneDiff(lightorigin, surf->plane);
+                       if (surf->flags & SURF_PLANEBACK)
+                               dist = -dist;
 
-       if (!r_dynamic.integer)
-               return;
-
-       Matrix4x4_Transform(&ent->inversematrix, rd->origin, lightorigin);
+                       if (dist < -0.25f && !(surf->flags & SURF_LIGHTBOTHSIDES))
+                               continue;
 
-       model = ent->model;
-       pvsleaf = Mod_PointInLeaf (lightorigin, model);
-       if (pvsleaf == NULL)
-               return;
+                       dist2 = dist * dist;
+                       if (dist2 >= maxdist)
+                               continue;
 
-       in = pvsleaf->compressed_vis;
-       if (!r_vismarklights.integer || !in)
-       {
-               // told not to use pvs, or there's no pvs to use
-               R_OldMarkLights(ent, lightorigin, rd, bit, bitindex, model->nodes + model->hulls[0].firstclipnode);
-               return;
-       }
+                       VectorCopy(lightorigin, impact);
+                       if (surf->plane->type >= 3)
+                               VectorMA(impact, -sdist, surf->plane->normal, impact);
+                       else
+                               impact[surf->plane->type] -= sdist;
 
-       lightframe++;
+                       impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
 
-       low[0] = lightorigin[0] - rd->cullradius;low[1] = lightorigin[1] - rd->cullradius;low[2] = lightorigin[2] - rd->cullradius;
-       high[0] = lightorigin[0] + rd->cullradius;high[1] = lightorigin[1] + rd->cullradius;high[2] = lightorigin[2] + rd->cullradius;
+                       d = bound(0, impacts, surf->extents[0] + 16) - impacts;
+                       dist2 += d * d;
+                       if (dist2 > maxdist)
+                               continue;
 
-       // for comparisons to minimum acceptable light
-       maxdist = rd->cullradius2;
+                       impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
 
-       row = (model->numleafs+7)>>3;
-       surfacepvsframes = model->surfacepvsframes;
+                       d = bound(0, impactt, surf->extents[1] + 16) - impactt;
+                       dist2 += d * d;
+                       if (dist2 > maxdist)
+                               continue;
 
-       k = 0;
-       while (k < row)
-       {
-               c = *in++;
-               if (c)
-               {
-                       for (i = 0;i < 8;i++)
+                       if (surf->dlightframe != r_framecount) // not dynamic until now
                        {
-                               if (c & (1<<i))
-                               {
-                                       // warning to the clumsy: numleafs is one less than it should be, it only counts leafs with vis bits (skips leaf 0)
-                                       leafnum = (k << 3)+i+1;
-                                       if (leafnum > model->numleafs)
-                                               return;
-                                       leaf = &model->leafs[leafnum];
-                                       if (leaf->mins[0] > high[0] || leaf->maxs[0] < low[0]
-                                        || leaf->mins[1] > high[1] || leaf->maxs[1] < low[1]
-                                        || leaf->mins[2] > high[2] || leaf->maxs[2] < low[2])
-                                               continue;
-                                       if ((m = leaf->nummarksurfaces))
-                                       {
-                                               mark = leaf->firstmarksurface;
-                                               do
-                                               {
-                                                       surf = model->surfaces + *mark++;
-                                                       // if not visible in current frame, or already marked because it was in another leaf we passed, skip
-                                                       if (surf->lightframe == lightframe)
-                                                               continue;
-                                                       surf->lightframe = lightframe;
-                                                       if (surfacepvsframes[surf->number] != model->pvsframecount)
-                                                               continue;
-                                                       dist = PlaneDiff(lightorigin, surf->plane);
-                                                       if (surf->flags & SURF_PLANEBACK)
-                                                               dist = -dist;
-                                                       // LordHavoc: make sure it is infront of the surface and not too far away
-                                                       if (dist < rd->cullradius && (dist > -0.25f || ((surf->flags & SURF_LIGHTBOTHSIDES) && dist > -rd->cullradius)))
-                                                       {
-                                                               int d;
-                                                               int impacts, impactt;
-                                                               float dist2, impact[3];
-
-                                                               dist2 = dist * dist;
-
-                                                               if (surf->plane->type < 3)
-                                                               {
-                                                                       VectorCopy(lightorigin, impact);
-                                                                       impact[surf->plane->type] -= dist;
-                                                               }
-                                                               else
-                                                               {
-                                                                       impact[0] = lightorigin[0] - surf->plane->normal[0] * dist;
-                                                                       impact[1] = lightorigin[1] - surf->plane->normal[1] * dist;
-                                                                       impact[2] = lightorigin[2] - surf->plane->normal[2] * dist;
-                                                               }
-
-                                                               impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
-                                                               d = bound(0, impacts, surf->extents[0] + 16) - impacts;
-                                                               dist2 += d * d;
-                                                               if (dist2 > maxdist)
-                                                                       continue;
-
-                                                               impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
-                                                               d = bound(0, impactt, surf->extents[1] + 16) - impactt;
-                                                               dist2 += d * d;
-                                                               if (dist2 > maxdist)
-                                                                       continue;
-
-                                                               if (surf->dlightframe != r_framecount) // not dynamic until now
-                                                               {
-                                                                       surf->dlightbits[0] = surf->dlightbits[1] = surf->dlightbits[2] = surf->dlightbits[3] = surf->dlightbits[4] = surf->dlightbits[5] = surf->dlightbits[6] = surf->dlightbits[7] = 0;
-                                                                       surf->dlightframe = r_framecount;
-                                                                       if (r_dlightmap.integer)
-                                                                               surf->cached_dlight = true;
-                                                               }
-                                                               surf->dlightbits[bitindex] |= bit;
-                                                       }
-                                               }
-                                               while (--m);
-                                       }
-                               }
+                               surf->dlightbits[0] = surf->dlightbits[1] = surf->dlightbits[2] = surf->dlightbits[3] = surf->dlightbits[4] = surf->dlightbits[5] = surf->dlightbits[6] = surf->dlightbits[7] = 0;
+                               surf->dlightframe = r_framecount;
+                               if (r_dlightmap.integer)
+                                       surf->cached_dlight = true;
                        }
-                       k++;
-                       continue;
+                       surf->dlightbits[bitindex] |= bit;
                }
-
-               k += *in++;
        }
 }
 
 void R_MarkLights(entity_render_t *ent)
 {
-       int i;
-       if (!gl_flashblend.integer)
-               for (i = 0;i < r_numdlights;i++)
-                       R_VisMarkLights (ent, r_dlight + i, 1 << (i & 31), i >> 5);
+       int i, bit, bitindex;
+       rdlight_t *rd;
+       vec3_t lightorigin;
+       if (!gl_flashblend.integer && r_dynamic.integer && ent->model)
+       {
+               for (i = 0, rd = r_dlight;i < r_numdlights;i++, rd++)
+               {
+                       bit = 1 << (i & 31);
+                       bitindex = i >> 5;
+                       Matrix4x4_Transform(&ent->inversematrix, rd->origin, lightorigin);
+                       lightpvsbytes = 0;
+                       if (r_vismarklights.integer && ent->model->brush.FatPVS)
+                               lightpvsbytes = ent->model->brush.FatPVS(ent->model, lightorigin, 0, lightpvs, sizeof(lightpvs));
+                       R_RecursiveMarkLights(ent, lightorigin, rd, bit, bitindex, ent->model->brushq1.nodes + ent->model->brushq1.hulls[0].firstclipnode, lightpvs, min(lightpvsbytes * 8, ent->model->brushq1.visleafs));
+               }
+       }
 }
 
 /*
@@ -444,167 +288,29 @@ LIGHT SAMPLING
 =============================================================================
 */
 
-static int RecursiveLightPoint (vec3_t color, const mnode_t *node, float x, float y, float startz, float endz)
+void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, int dynamic, const mleaf_t *leaf)
 {
-       int side, distz = endz - startz;
-       float front, back;
-       float mid;
+       VectorClear(diffusecolor);
+       VectorClear(diffusenormal);
 
-loc0:
-       if (node->contents < 0)
-               return false;           // didn't hit anything
-
-       switch (node->plane->type)
+       if (!r_fullbright.integer && cl.worldmodel && cl.worldmodel->brush.LightPoint)
        {
-       case PLANE_X:
-               node = node->children[x < node->plane->dist];
-               goto loc0;
-       case PLANE_Y:
-               node = node->children[y < node->plane->dist];
-               goto loc0;
-       case PLANE_Z:
-               side = startz < node->plane->dist;
-               if ((endz < node->plane->dist) == side)
-               {
-                       node = node->children[side];
-                       goto loc0;
-               }
-               // found an intersection
-               mid = node->plane->dist;
-               break;
-       default:
-               back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
-               front += startz * node->plane->normal[2];
-               back += endz * node->plane->normal[2];
-               side = front < node->plane->dist;
-               if ((back < node->plane->dist) == side)
-               {
-                       node = node->children[side];
-                       goto loc0;
-               }
-               // found an intersection
-               mid = startz + distz * (front - node->plane->dist) / (front - back);
-               break;
+               ambientcolor[0] = ambientcolor[1] = ambientcolor[2] = r_ambient.value * (2.0f / 128.0f);
+               cl.worldmodel->brush.LightPoint(cl.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
        }
-
-       // go down front side
-       if (node->children[side]->contents >= 0 && RecursiveLightPoint (color, node->children[side], x, y, startz, mid))
-               return true;    // hit something
        else
-       {
-               // check for impact on this node
-               if (node->numsurfaces)
-               {
-                       int i, ds, dt;
-                       msurface_t *surf;
-
-                       surf = cl.worldmodel->surfaces + node->firstsurface;
-                       for (i = 0;i < node->numsurfaces;i++, surf++)
-                       {
-                               if (!(surf->flags & SURF_LIGHTMAP))
-                                       continue;       // no lightmaps
-
-                               ds = (int) (x * surf->texinfo->vecs[0][0] + y * surf->texinfo->vecs[0][1] + mid * surf->texinfo->vecs[0][2] + surf->texinfo->vecs[0][3]);
-                               dt = (int) (x * surf->texinfo->vecs[1][0] + y * surf->texinfo->vecs[1][1] + mid * surf->texinfo->vecs[1][2] + surf->texinfo->vecs[1][3]);
-
-                               if (ds < surf->texturemins[0] || dt < surf->texturemins[1])
-                                       continue;
-
-                               ds -= surf->texturemins[0];
-                               dt -= surf->texturemins[1];
-
-                               if (ds > surf->extents[0] || dt > surf->extents[1])
-                                       continue;
-
-                               if (surf->samples)
-                               {
-                                       qbyte *lightmap;
-                                       int maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
-                                       line3 = ((surf->extents[0]>>4)+1)*3;
-                                       size3 = ((surf->extents[0]>>4)+1) * ((surf->extents[1]>>4)+1)*3; // LordHavoc: *3 for colored lighting
-
-                                       lightmap = surf->samples + ((dt>>4) * ((surf->extents[0]>>4)+1) + (ds>>4))*3; // LordHavoc: *3 for color
-
-                                       for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
-                                       {
-                                               scale = d_lightstylevalue[surf->styles[maps]];
-                                               r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
-                                               r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
-                                               r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
-                                               r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
-                                               lightmap += size3;
-                                       }
-
-/*
-LordHavoc: here's the readable version of the interpolation
-code, not quite as easy for the compiler to optimize...
-
-dsfrac is the X position in the lightmap pixel, * 16
-dtfrac is the Y position in the lightmap pixel, * 16
-r00 is top left corner, r01 is top right corner
-r10 is bottom left corner, r11 is bottom right corner
-g and b are the same layout.
-r0 and r1 are the top and bottom intermediate results
-
-first we interpolate the top two points, to get the top
-edge sample
-
-       r0 = (((r01-r00) * dsfrac) >> 4) + r00;
-       g0 = (((g01-g00) * dsfrac) >> 4) + g00;
-       b0 = (((b01-b00) * dsfrac) >> 4) + b00;
+               VectorSet(ambientcolor, 1, 1, 1);
 
-then we interpolate the bottom two points, to get the
-bottom edge sample
-
-       r1 = (((r11-r10) * dsfrac) >> 4) + r10;
-       g1 = (((g11-g10) * dsfrac) >> 4) + g10;
-       b1 = (((b11-b10) * dsfrac) >> 4) + b10;
-
-then we interpolate the top and bottom samples to get the
-middle sample (the one which was requested)
-
-       r = (((r1-r0) * dtfrac) >> 4) + r0;
-       g = (((g1-g0) * dtfrac) >> 4) + g0;
-       b = (((b1-b0) * dtfrac) >> 4) + b0;
-*/
-
-                                       color[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
-                                       color[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
-                                       color[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
-                               }
-                               return true; // success
-                       }
-               }
-
-               // go down back side
-               node = node->children[side ^ 1];
-               startz = mid;
-               distz = endz - startz;
-               goto loc0;
-       }
-}
-
-void R_CompleteLightPoint (vec3_t color, const vec3_t p, int dynamic, const mleaf_t *leaf)
-{
-       int i;
-       vec3_t v;
-       float f;
-       rdlight_t *rd;
-       mlight_t *sl;
-       if (leaf == NULL)
-               leaf = Mod_PointInLeaf(p, cl.worldmodel);
-       if (!leaf || leaf->contents == CONTENTS_SOLID || r_fullbright.integer || !cl.worldmodel->lightdata)
+       // FIXME: this .lights related stuff needs to be ported into the Mod_Q1BSP code
+       if (cl.worldmodel->brushq1.numlights)
        {
-               color[0] = color[1] = color[2] = 1;
-               return;
-       }
-
-       color[0] = color[1] = color[2] = r_ambient.value * (2.0f / 128.0f);
-       if (cl.worldmodel->numlights)
-       {
-               for (i = 0;i < cl.worldmodel->numlights;i++)
+               int i;
+               vec3_t v;
+               float f;
+               mlight_t *sl;
+               for (i = 0;i < cl.worldmodel->brushq1.numlights;i++)
                {
-                       sl = cl.worldmodel->lights + i;
+                       sl = cl.worldmodel->brushq1.lights + i;
                        if (d_lightstylevalue[sl->style] > 0)
                        {
                                VectorSubtract (p, sl->origin, v);
@@ -612,25 +318,27 @@ void R_CompleteLightPoint (vec3_t color, const vec3_t p, int dynamic, const mlea
                                if (f > 0 && CL_TraceLine(p, sl->origin, NULL, NULL, 0, false, NULL) == 1)
                                {
                                        f *= d_lightstylevalue[sl->style] * (1.0f / 65536.0f);
-                                       VectorMA(color, f, sl->light, color);
+                                       VectorMA(ambientcolor, f, sl->light, ambientcolor);
                                }
                        }
                }
        }
-       else
-               RecursiveLightPoint (color, cl.worldmodel->nodes, p[0], p[1], p[2], p[2] - 65536);
 
        if (dynamic)
        {
+               int i;
+               float f, v[3];
+               rdlight_t *rd;
+               // FIXME: this really should handle dlights as diffusecolor/diffusenormal somehow
                for (i = 0;i < r_numdlights;i++)
                {
                        rd = r_dlight + i;
-                       VectorSubtract (p, rd->origin, v);
+                       VectorSubtract(p, rd->origin, v);
                        f = DotProduct(v, v);
                        if (f < rd->cullradius2 && CL_TraceLine(p, rd->origin, NULL, NULL, 0, false, NULL) == 1)
                        {
                                f = (1.0f / (f + LIGHTOFFSET)) - rd->subtract;
-                               VectorMA(color, f, rd->light, color);
+                               VectorMA(ambientcolor, f, rd->light, ambientcolor);
                        }
                }
        }
@@ -654,61 +362,43 @@ nearlight_t;
 static int nearlights;
 static nearlight_t nearlight[MAX_DLIGHTS];
 
-int R_LightModel(float *ambient4f, const entity_render_t *ent, float colorr, float colorg, float colorb, float colora, int worldcoords)
+int R_LightModel(float *ambient4f, float *diffusecolor, float *diffusenormal, const entity_render_t *ent, float colorr, float colorg, float colorb, float colora, int worldcoords)
 {
        int i, j, maxnearlights;
        float v[3], f, mscale, stylescale, intensity, ambientcolor[3];
        nearlight_t *nl;
        mlight_t *sl;
        rdlight_t *rd;
-       mleaf_t *leaf;
 
        nearlights = 0;
        maxnearlights = r_modellights.integer;
+       ambient4f[0] = ambient4f[1] = ambient4f[2] = r_ambient.value * (2.0f / 128.0f);
+       VectorClear(diffusecolor);
+       VectorClear(diffusenormal);
        if (r_fullbright.integer || (ent->effects & EF_FULLBRIGHT))
        {
                // highly rare
-               ambient4f[0] = colorr;
-               ambient4f[1] = colorg;
-               ambient4f[2] = colorb;
-               ambient4f[3] = colora;
-               return false;
-       }
-       if (r_shadow_realtime_world.integer)
-       {
-               // user config choice
-               ambient4f[0] = r_ambient.value * (2.0f / 128.0f) * colorr;
-               ambient4f[1] = r_ambient.value * (2.0f / 128.0f) * colorg;
-               ambient4f[2] = r_ambient.value * (2.0f / 128.0f) * colorb;
-               ambient4f[3] = colora;
-               return false;
-       }
-       if (maxnearlights == 0)
-       {
-               // user config choice
-               R_CompleteLightPoint (ambient4f, ent->origin, true, NULL);
-               ambient4f[0] *= colorr;
-               ambient4f[1] *= colorg;
-               ambient4f[2] *= colorb;
-               ambient4f[3] = colora;
-               return false;
+               VectorSet(ambient4f, 1, 1, 1);
+               maxnearlights = 0;
        }
-       leaf = Mod_PointInLeaf(ent->origin, cl.worldmodel);
-       if (!leaf || leaf->contents == CONTENTS_SOLID || !cl.worldmodel->lightdata)
-               ambient4f[0] = ambient4f[1] = ambient4f[2] = 1;
+       else if (r_shadow_realtime_world.integer)
+               maxnearlights = 0;
        else
        {
-               ambient4f[0] = ambient4f[1] = ambient4f[2] = r_ambient.value * (2.0f / 128.0f);
-               if (!cl.worldmodel->numlights)
-                       RecursiveLightPoint (ambient4f, cl.worldmodel->nodes, ent->origin[0], ent->origin[1], ent->origin[2], ent->origin[2] - 65536);
+               if (cl.worldmodel && cl.worldmodel->brush.LightPoint)
+                       cl.worldmodel->brush.LightPoint(cl.worldmodel, ent->origin, ambient4f, diffusecolor, diffusenormal);
+               else
+                       VectorSet(ambient4f, 1, 1, 1);
        }
+
        // scale of the model's coordinate space, to alter light attenuation to match
        // make the mscale squared so it can scale the squared distance results
        mscale = ent->scale * ent->scale;
+       // FIXME: no support for .lights on non-Q1BSP?
        nl = &nearlight[0];
        for (i = 0;i < ent->numentlights;i++)
        {
-               sl = cl.worldmodel->lights + ent->entlights[i];
+               sl = cl.worldmodel->brushq1.lights + ent->entlights[i];
                stylescale = d_lightstylevalue[sl->style] * (1.0f / 65536.0f);
                VectorSubtract (ent->origin, sl->origin, v);
                f = ((1.0f / (DotProduct(v, v) * sl->falloff + sl->distbias)) - sl->subtract) * stylescale;
@@ -834,18 +524,35 @@ int R_LightModel(float *ambient4f, const entity_render_t *ent, float colorr, flo
        ambient4f[1] *= colorg;
        ambient4f[2] *= colorb;
        ambient4f[3] = colora;
-       return nearlights != 0;
+       diffusecolor[0] *= colorr;
+       diffusecolor[1] *= colorg;
+       diffusecolor[2] *= colorb;
+       return nearlights != 0 || DotProduct(diffusecolor, diffusecolor) > 0;
 }
 
-void R_LightModel_CalcVertexColors(const float *ambientcolor4f, int numverts, const float *vertex3f, const float *normal3f, float *color4f)
+void R_LightModel_CalcVertexColors(const float *ambientcolor4f, const float *diffusecolor, const float *diffusenormal, int numverts, const float *vertex3f, const float *normal3f, float *color4f)
 {
-       int i, j;
-       float color[4], v[3], dot, dist2, f;
+       int i, j, usediffuse;
+       float color[4], v[3], dot, dist2, f, dnormal[3];
        nearlight_t *nl;
+       usediffuse = DotProduct(diffusecolor, diffusecolor) > 0;
+       VectorCopy(diffusenormal, dnormal);
+       if (usediffuse)
+               VectorNormalize(dnormal);
        // directional shading code here
        for (i = 0;i < numverts;i++, vertex3f += 3, normal3f += 3, color4f += 4)
        {
                VectorCopy4(ambientcolor4f, color);
+
+               // silly directional diffuse shading
+               if (usediffuse)
+               {
+                       dot = DotProduct(normal3f, dnormal);
+                       if (dot > 0)
+                               VectorMA(color, dot, diffusecolor, color);
+               }
+
+               // pretty good lighting
                for (j = 0, nl = &nearlight[0];j < nearlights;j++, nl++)
                {
                        VectorSubtract(vertex3f, nl->origin, v);
@@ -878,7 +585,7 @@ void R_UpdateEntLights(entity_render_t *ent)
        int i;
        const mlight_t *sl;
        vec3_t v;
-       if (r_shadow_realtime_dlight.integer)
+       if (r_shadow_realtime_dlight.integer || gl_flashblend.integer)
                return;
        VectorSubtract(ent->origin, ent->entlightsorigin, v);
        if (ent->entlightsframe != (r_framecount - 1) || (realtime > ent->entlightstime && DotProduct(v,v) >= 1.0f))
@@ -887,9 +594,10 @@ void R_UpdateEntLights(entity_render_t *ent)
                VectorCopy(ent->origin, ent->entlightsorigin);
                ent->numentlights = 0;
                if (cl.worldmodel)
-                       for (i = 0, sl = cl.worldmodel->lights;i < cl.worldmodel->numlights && ent->numentlights < MAXENTLIGHTS;i++, sl++)
+                       for (i = 0, sl = cl.worldmodel->brushq1.lights;i < cl.worldmodel->brushq1.numlights && ent->numentlights < MAXENTLIGHTS;i++, sl++)
                                if (CL_TraceLine(ent->origin, sl->origin, NULL, NULL, 0, false, NULL) == 1)
                                        ent->entlights[ent->numentlights++] = i;
        }
        ent->entlightsframe = r_framecount;
 }
+