]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - r_light.c
removed unused leaf parameter on CompleteLightPoint
[xonotic/darkplaces.git] / r_light.c
index 0a3e27ff03eced79d4f817b43c99ed3f31905aad..716998a44ea49e3fd777948969f117ecbb58d5d9 100644 (file)
--- a/r_light.c
+++ b/r_light.c
@@ -23,13 +23,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "cl_collision.h"
 #include "r_shadow.h"
 
-rdlight_t r_dlight[MAX_DLIGHTS];
+dlight_t r_dlight[MAX_DLIGHTS];
 int r_numdlights = 0;
 
 cvar_t r_modellights = {CVAR_SAVE, "r_modellights", "4"};
 cvar_t r_vismarklights = {0, "r_vismarklights", "1"};
 cvar_t r_coronas = {CVAR_SAVE, "r_coronas", "1"};
-cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "1"};
+cvar_t gl_flashblend = {CVAR_SAVE, "gl_flashblend", "0"};
 
 static rtexture_t *lightcorona;
 static rtexturepool_t *lighttexturepool;
@@ -81,17 +81,18 @@ void R_Light_Init(void)
 
 /*
 ==================
-R_AnimateLight
+R_UpdateLights
 ==================
 */
-void R_AnimateLight (void)
+void R_UpdateLights(void)
 {
-       int i, j, k;
+       float frac;
+       int i, j, k, l;
 
-//
 // light animations
 // 'm' is normal light, 'a' is no light, 'z' is double bright
        i = (int)(cl.time * 10);
+       frac = (cl.time * 10) - i;
        for (j = 0;j < MAX_LIGHTSTYLES;j++)
        {
                if (!cl_lightstyle || !cl_lightstyle[j].length)
@@ -100,18 +101,11 @@ void R_AnimateLight (void)
                        continue;
                }
                k = i % cl_lightstyle[j].length;
+               l = (i-1) % cl_lightstyle[j].length;
                k = cl_lightstyle[j].map[k] - 'a';
-               k = k*22;
-               d_lightstylevalue[j] = k;
+               l = cl_lightstyle[j].map[l] - 'a';
+               d_lightstylevalue[j] = ((k*frac)+(l*(1-frac)))*22;
        }
-}
-
-
-void R_BuildLightList(void)
-{
-       int i;
-       dlight_t *cd;
-       rdlight_t *rd;
 
        r_numdlights = 0;
        c_dlights = 0;
@@ -119,311 +113,54 @@ void R_BuildLightList(void)
        if (!r_dynamic.integer || !cl_dlights)
                return;
 
+       // TODO: optimize to not scan whole cl_dlights array if possible
        for (i = 0;i < MAX_DLIGHTS;i++)
        {
-               cd = cl_dlights + i;
-               if (cd->radius <= 0)
-                       continue;
-               rd = &r_dlight[r_numdlights++];
-               VectorCopy(cd->origin, rd->origin);
-               VectorScale(cd->color, cd->radius * 64.0f, rd->light);
-               rd->cullradius2 = DotProduct(rd->light, rd->light) * (0.25f / (64.0f * 64.0f)) + 4096.0f;
-               // clamp radius to avoid overflowing division table in lightmap code
-               if (rd->cullradius2 > (2048.0f * 2048.0f))
-                       rd->cullradius2 = (2048.0f * 2048.0f);
-               rd->cullradius = sqrt(rd->cullradius2);
-               rd->subtract = 1.0f / rd->cullradius2;
-               rd->ent = cd->ent;
-               c_dlights++; // count every dlight in use
+               if (cl_dlights[i].radius > 0)
+               {
+                       R_RTLight_UpdateFromDLight(&cl_dlights[i].rtlight, &cl_dlights[i], false);
+                       // FIXME: use pointer instead of copy
+                       r_dlight[r_numdlights++] = cl_dlights[i];
+                       c_dlights++; // count every dlight in use
+               }
        }
 }
 
 void R_DrawCoronas(void)
 {
-       int i;
+       int i, lnum, flag;
        float cscale, scale, viewdist, dist;
-       rdlight_t *rd;
-       if (!r_coronas.integer)
+       dlight_t *light;
+       if (r_coronas.value < 0.01)
                return;
        R_Mesh_Matrix(&r_identitymatrix);
-       viewdist = DotProduct(r_origin, vpn);
-       for (i = 0;i < r_numdlights;i++)
-       {
-               rd = r_dlight + i;
-               dist = (DotProduct(rd->origin, vpn) - viewdist);
-               if (dist >= 24.0f && CL_TraceLine(rd->origin, r_origin, NULL, NULL, 0, true, NULL) == 1)
-               {
-                       cscale = (1.0f / 131072.0f);
-                       scale = rd->cullradius * 0.25f;
-                       if (gl_flashblend.integer)
-                       {
-                               cscale *= 4.0f;
-                               scale *= 2.0f;
-                       }
-                       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);
-               }
-       }
-}
-
-/*
-=============================================================================
-
-DYNAMIC LIGHTS
-
-=============================================================================
-*/
-
-/*
-=============
-R_MarkLights
-=============
-*/
-static void R_OldMarkLights (entity_render_t *ent, vec3_t lightorigin, rdlight_t *rd, int bit, int bitindex, mnode_t *node)
-{
-       float ndist, maxdist;
-       msurface_t *surf;
-       int i, *surfacepvsframes;
-       int d, impacts, impactt;
-       float dist, dist2, impact[3];
-
-       if (!r_dynamic.integer)
-               return;
-
-       // for comparisons to minimum acceptable light
-       maxdist = rd->cullradius2;
-
-       surfacepvsframes = ent->model->brushq1.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->brushq1.surfaces + node->firstsurface;
-       for (i = 0;i < node->numsurfaces;i++, surf++)
-       {
-               if (surfacepvsframes[surf->number] != ent->model->brushq1.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;
-               }
-               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;
-       }
-
-       if (node->children[0]->contents >= 0)
+       viewdist = DotProduct(r_vieworigin, r_viewforward);
+       flag = r_rtworld ? LIGHTFLAG_REALTIMEMODE : LIGHTFLAG_NORMALMODE;
+       for (lnum = 0, light = r_shadow_worldlightchain;light;light = light->next, lnum++)
        {
-               if (node->children[1]->contents >= 0)
+               if ((light->flags & flag) && light->corona * r_coronas.value > 0 && (r_shadow_debuglight.integer < 0 || r_shadow_debuglight.integer == lnum) && (dist = (DotProduct(light->rtlight.shadoworigin, r_viewforward) - viewdist)) >= 24.0f && CL_TraceLine(light->rtlight.shadoworigin, r_vieworigin, NULL, NULL, true, NULL, SUPERCONTENTS_SOLID) == 1)
                {
-                       R_OldMarkLights (ent, lightorigin, rd, bit, bitindex, node->children[0]);
-                       node = node->children[1];
-                       goto loc0;
+                       cscale = light->rtlight.corona * r_coronas.value * 0.25f;
+                       scale = light->rtlight.radius * light->rtlight.coronasizescale;
+                       R_DrawSprite(GL_ONE, GL_ONE, lightcorona, true, light->rtlight.shadoworigin, r_viewright, r_viewup, scale, -scale, -scale, scale, light->rtlight.color[0] * cscale, light->rtlight.color[1] * cscale, light->rtlight.color[2] * cscale, 1);
                }
-               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 (!r_dynamic.integer || !ent->model)
-               return;
-
-       Matrix4x4_Transform(&ent->inversematrix, rd->origin, lightorigin);
-
-       model = ent->model;
-       pvsleaf = model->brushq1.PointInLeaf(model, lightorigin);
-       if (pvsleaf == NULL)
-               return;
-
-       in = pvsleaf->compressed_vis;
-       if (!r_vismarklights.integer || !in)
+       for (i = 0, light = r_dlight;i < r_numdlights;i++, light++)
        {
-               // told not to use pvs, or there's no pvs to use
-               R_OldMarkLights(ent, lightorigin, rd, bit, bitindex, model->brushq1.nodes + model->brushq1.hulls[0].firstclipnode);
-               return;
-       }
-
-       lightframe++;
-
-       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;
-
-       // for comparisons to minimum acceptable light
-       maxdist = rd->cullradius2;
-
-       row = (model->brushq1.numleafs+7)>>3;
-       surfacepvsframes = model->brushq1.surfacepvsframes;
-
-       k = 0;
-       while (k < row)
-       {
-               c = *in++;
-               if (c)
+               if ((light->flags & flag) && light->corona * r_coronas.value > 0 && (dist = (DotProduct(light->origin, r_viewforward) - viewdist)) >= 24.0f && CL_TraceLine(light->origin, r_vieworigin, NULL, NULL, true, NULL, SUPERCONTENTS_SOLID) == 1)
                {
-                       for (i = 0;i < 8;i++)
+                       cscale = light->corona * r_coronas.value * 0.25f;
+                       scale = light->rtlight.radius * light->rtlight.coronasizescale;
+                       if (gl_flashblend.integer)
                        {
-                               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->brushq1.numleafs)
-                                               return;
-                                       leaf = &model->brushq1.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->brushq1.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->brushq1.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);
-                                       }
-                               }
+                               cscale *= 4.0f;
+                               scale *= 2.0f;
                        }
-                       k++;
-                       continue;
+                       R_DrawSprite(GL_ONE, GL_ONE, lightcorona, true, light->origin, r_viewright, r_viewup, scale, -scale, -scale, scale, light->color[0] * cscale, light->color[1] * cscale, light->color[2] * cscale, 1);
                }
-
-               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);
-}
-
 /*
 =============================================================================
 
@@ -432,44 +169,34 @@ LIGHT SAMPLING
 =============================================================================
 */
 
-void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, int dynamic, const mleaf_t *leaf)
+void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const vec3_t p, int dynamic)
 {
        VectorClear(diffusecolor);
        VectorClear(diffusenormal);
 
-       if (!r_fullbright.integer && cl.worldmodel && cl.worldmodel->brush.LightPoint)
+       if (!r_fullbright.integer && r_refdef.worldmodel && r_refdef.worldmodel->brush.LightPoint)
        {
                ambientcolor[0] = ambientcolor[1] = ambientcolor[2] = r_ambient.value * (2.0f / 128.0f);
-               cl.worldmodel->brush.LightPoint(cl.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
+               r_refdef.worldmodel->brush.LightPoint(r_refdef.worldmodel, p, ambientcolor, diffusecolor, diffusenormal);
        }
        else
                VectorSet(ambientcolor, 1, 1, 1);
 
-       /*
-       if (leaf == NULL && cl.worldmodel != NULL)
-               leaf = cl.worldmodel->brushq1.PointInLeaf(cl.worldmodel, p);
-       if (!leaf || leaf->contents == CONTENTS_SOLID || !cl.worldmodel->brushq1.lightdata)
-       {
-               VectorSet(ambientcolor, 1, 1, 1);
-               return;
-       }
-       */
-
        // FIXME: this .lights related stuff needs to be ported into the Mod_Q1BSP code
-       if (cl.worldmodel->brushq1.numlights)
+       if (r_refdef.worldmodel->brushq1.numlights)
        {
                int i;
                vec3_t v;
                float f;
                mlight_t *sl;
-               for (i = 0;i < cl.worldmodel->brushq1.numlights;i++)
+               for (i = 0;i < r_refdef.worldmodel->brushq1.numlights;i++)
                {
-                       sl = cl.worldmodel->brushq1.lights + i;
+                       sl = r_refdef.worldmodel->brushq1.lights + i;
                        if (d_lightstylevalue[sl->style] > 0)
                        {
                                VectorSubtract (p, sl->origin, v);
                                f = ((1.0f / (DotProduct(v, v) * sl->falloff + sl->distbias)) - sl->subtract);
-                               if (f > 0 && CL_TraceLine(p, sl->origin, NULL, NULL, 0, false, NULL) == 1)
+                               if (f > 0 && CL_TraceLine(p, sl->origin, NULL, NULL, false, NULL, SUPERCONTENTS_SOLID) == 1)
                                {
                                        f *= d_lightstylevalue[sl->style] * (1.0f / 65536.0f);
                                        VectorMA(ambientcolor, f, sl->light, ambientcolor);
@@ -482,17 +209,17 @@ void R_CompleteLightPoint(vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffu
        {
                int i;
                float f, v[3];
-               rdlight_t *rd;
+               dlight_t *light;
                // 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);
+                       light = r_dlight + i;
+                       VectorSubtract(p, light->origin, v);
                        f = DotProduct(v, v);
-                       if (f < rd->cullradius2 && CL_TraceLine(p, rd->origin, NULL, NULL, 0, false, NULL) == 1)
+                       if (f < light->rtlight.lightmap_cullradius2 && CL_TraceLine(p, light->origin, NULL, NULL, false, NULL, SUPERCONTENTS_SOLID) == 1)
                        {
-                               f = (1.0f / (f + LIGHTOFFSET)) - rd->subtract;
-                               VectorMA(ambientcolor, f, rd->light, ambientcolor);
+                               f = (1.0f / (f + LIGHTOFFSET)) - light->rtlight.lightmap_subtract;
+                               VectorMA(ambientcolor, f, light->rtlight.lightmap_light, ambientcolor);
                        }
                }
        }
@@ -519,28 +246,32 @@ static nearlight_t nearlight[MAX_DLIGHTS];
 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];
+       float v[3], f, mscale, stylescale, intensity, ambientcolor[3], tempdiffusenormal[3];
        nearlight_t *nl;
        mlight_t *sl;
-       rdlight_t *rd;
+       dlight_t *light;
 
        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))
+       if (!(ent->flags & RENDER_LIGHT))
        {
                // highly rare
                VectorSet(ambient4f, 1, 1, 1);
                maxnearlights = 0;
        }
-       else if (r_shadow_realtime_world.integer)
+       else if (r_lightmapintensity <= 0 && !(ent->flags & RENDER_TRANSPARENT))
                maxnearlights = 0;
        else
        {
-               if (cl.worldmodel && cl.worldmodel->brush.LightPoint)
-                       cl.worldmodel->brush.LightPoint(cl.worldmodel, ent->origin, ambient4f, diffusecolor, diffusenormal);
+               if (r_refdef.worldmodel && r_refdef.worldmodel->brush.LightPoint)
+               {
+                       r_refdef.worldmodel->brush.LightPoint(r_refdef.worldmodel, ent->origin, ambient4f, diffusecolor, tempdiffusenormal);
+                       Matrix4x4_Transform3x3(&ent->inversematrix, tempdiffusenormal, diffusenormal);
+                       VectorNormalize(diffusenormal);
+               }
                else
                        VectorSet(ambient4f, 1, 1, 1);
        }
@@ -552,7 +283,7 @@ int R_LightModel(float *ambient4f, float *diffusecolor, float *diffusenormal, co
        nl = &nearlight[0];
        for (i = 0;i < ent->numentlights;i++)
        {
-               sl = cl.worldmodel->brushq1.lights + ent->entlights[i];
+               sl = r_refdef.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;
@@ -600,23 +331,24 @@ int R_LightModel(float *ambient4f, float *diffusecolor, float *diffusenormal, co
                        nl->offset = sl->distbias;
                }
        }
-       if (!r_shadow_realtime_dlight.integer)
+       if (!r_rtdlight || (ent->flags & RENDER_TRANSPARENT))
        {
+               // FIXME: this dlighting doesn't look like rtlights
                for (i = 0;i < r_numdlights;i++)
                {
-                       rd = r_dlight + i;
-                       VectorCopy(rd->origin, v);
+                       light = r_dlight + i;
+                       VectorCopy(light->origin, v);
                        if (v[0] < ent->mins[0]) v[0] = ent->mins[0];if (v[0] > ent->maxs[0]) v[0] = ent->maxs[0];
                        if (v[1] < ent->mins[1]) v[1] = ent->mins[1];if (v[1] > ent->maxs[1]) v[1] = ent->maxs[1];
                        if (v[2] < ent->mins[2]) v[2] = ent->mins[2];if (v[2] > ent->maxs[2]) v[2] = ent->maxs[2];
-                       VectorSubtract (v, rd->origin, v);
-                       if (DotProduct(v, v) < rd->cullradius2)
+                       VectorSubtract (v, light->origin, v);
+                       if (DotProduct(v, v) < light->rtlight.lightmap_cullradius2)
                        {
-                               if (CL_TraceLine(ent->origin, rd->origin, NULL, NULL, 0, false, NULL) != 1)
+                               if (CL_TraceLine(ent->origin, light->origin, NULL, NULL, false, NULL, SUPERCONTENTS_SOLID) != 1)
                                        continue;
-                               VectorSubtract (ent->origin, rd->origin, v);
-                               f = ((1.0f / (DotProduct(v, v) + LIGHTOFFSET)) - rd->subtract);
-                               VectorScale(rd->light, f, ambientcolor);
+                               VectorSubtract (ent->origin, light->origin, v);
+                               f = ((1.0f / (DotProduct(v, v) + LIGHTOFFSET)) - light->rtlight.lightmap_subtract);
+                               VectorScale(light->rtlight.lightmap_light, f, ambientcolor);
                                intensity = DotProduct(ambientcolor, ambientcolor);
                                if (f < 0)
                                        intensity *= -1.0f;
@@ -647,14 +379,14 @@ int R_LightModel(float *ambient4f, float *diffusecolor, float *diffusenormal, co
                                        nl->intensity = intensity;
                                        // transform the light into the model's coordinate system
                                        if (worldcoords)
-                                               VectorCopy(rd->origin, nl->origin);
+                                               VectorCopy(light->origin, nl->origin);
                                        else
                                        {
-                                               Matrix4x4_Transform(&ent->inversematrix, rd->origin, nl->origin);
+                                               Matrix4x4_Transform(&ent->inversematrix, light->origin, nl->origin);
                                                /*
                                                Con_Printf("%i %s : %f %f %f : %f %f %f\n%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n"
                                                , rd - r_dlight, ent->model->name
-                                               , rd->origin[0], rd->origin[1], rd->origin[2]
+                                               , light->origin[0], light->origin[1], light->origin[2]
                                                , nl->origin[0], nl->origin[1], nl->origin[2]
                                                , ent->inversematrix.m[0][0], ent->inversematrix.m[0][1], ent->inversematrix.m[0][2], ent->inversematrix.m[0][3]
                                                , ent->inversematrix.m[1][0], ent->inversematrix.m[1][1], ent->inversematrix.m[1][2], ent->inversematrix.m[1][3]
@@ -665,10 +397,10 @@ int R_LightModel(float *ambient4f, float *diffusecolor, float *diffusenormal, co
                                        // integrate mscale into falloff, for maximum speed
                                        nl->falloff = mscale;
                                        VectorCopy(ambientcolor, nl->ambientlight);
-                                       nl->light[0] = rd->light[0] * colorr * 4.0f;
-                                       nl->light[1] = rd->light[1] * colorg * 4.0f;
-                                       nl->light[2] = rd->light[2] * colorb * 4.0f;
-                                       nl->subtract = rd->subtract;
+                                       nl->light[0] = light->rtlight.lightmap_light[0] * colorr * 4.0f;
+                                       nl->light[1] = light->rtlight.lightmap_light[1] * colorg * 4.0f;
+                                       nl->light[2] = light->rtlight.lightmap_light[2] * colorb * 4.0f;
+                                       nl->subtract = light->rtlight.lightmap_subtract;
                                        nl->offset = LIGHTOFFSET;
                                }
                        }
@@ -690,7 +422,9 @@ void R_LightModel_CalcVertexColors(const float *ambientcolor4f, const float *dif
        float color[4], v[3], dot, dist2, f, dnormal[3];
        nearlight_t *nl;
        usediffuse = DotProduct(diffusecolor, diffusecolor) > 0;
-       VectorCopy(diffusenormal, dnormal);
+       // negate the diffuse normal to avoid the need to negate the
+       // dotproduct on each vertex
+       VectorNegate(diffusenormal, dnormal);
        if (usediffuse)
                VectorNormalize(dnormal);
        // directional shading code here
@@ -709,7 +443,7 @@ void R_LightModel_CalcVertexColors(const float *ambientcolor4f, const float *dif
                // pretty good lighting
                for (j = 0, nl = &nearlight[0];j < nearlights;j++, nl++)
                {
-                       VectorSubtract(vertex3f, nl->origin, v);
+                       VectorSubtract(nl->origin, vertex3f, v);
                        // first eliminate negative lighting (back side)
                        dot = DotProduct(normal3f, v);
                        if (dot > 0)
@@ -739,7 +473,7 @@ void R_UpdateEntLights(entity_render_t *ent)
        int i;
        const mlight_t *sl;
        vec3_t v;
-       if (r_shadow_realtime_dlight.integer || gl_flashblend.integer)
+       if (r_lightmapintensity <= 0 && !(ent->flags & RENDER_TRANSPARENT))
                return;
        VectorSubtract(ent->origin, ent->entlightsorigin, v);
        if (ent->entlightsframe != (r_framecount - 1) || (realtime > ent->entlightstime && DotProduct(v,v) >= 1.0f))
@@ -747,9 +481,9 @@ void R_UpdateEntLights(entity_render_t *ent)
                ent->entlightstime = realtime + 0.1;
                VectorCopy(ent->origin, ent->entlightsorigin);
                ent->numentlights = 0;
-               if (cl.worldmodel)
-                       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)
+               if (r_refdef.worldmodel)
+                       for (i = 0, sl = r_refdef.worldmodel->brushq1.lights;i < r_refdef.worldmodel->brushq1.numlights && ent->numentlights < MAXENTLIGHTS;i++, sl++)
+                               if (CL_TraceLine(ent->origin, sl->origin, NULL, NULL, false, NULL, SUPERCONTENTS_SOLID) == 1)
                                        ent->entlights[ent->numentlights++] = i;
        }
        ent->entlightsframe = r_framecount;