]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - cl_particles.c
reworked decal system to limit the number of decal splats active at once
[xonotic/darkplaces.git] / cl_particles.c
index ae5aa388ba5573dfc8043621ffa39cc5401b726e..404ff845cbe998dbf7e32464e509cd65b0897adc 100644 (file)
@@ -120,10 +120,8 @@ typedef struct particleeffectinfo_s
 }
 particleeffectinfo_t;
 
-#define MAX_PARTICLEEFFECTNAME 256
 char particleeffectname[MAX_PARTICLEEFFECTNAME][64];
 
-#define MAX_PARTICLEEFFECTINFO 4096
 
 particleeffectinfo_t particleeffectinfo[MAX_PARTICLEEFFECTINFO];
 
@@ -169,7 +167,6 @@ int         ramp3[8] = {0x6d, 0x6b, 6, 5, 4, 3};
 
 //static int explosparkramp[8] = {0x4b0700, 0x6f0f00, 0x931f07, 0xb7330f, 0xcf632b, 0xe3974f, 0xffe7b5, 0xffffff};
 
-#define MAX_PARTICLETEXTURES 1024
 // particletexture_t is a rectangle in the particlefonttexture
 typedef struct particletexture_s
 {
@@ -181,6 +178,7 @@ particletexture_t;
 static rtexturepool_t *particletexturepool;
 static rtexture_t *particlefonttexture;
 static particletexture_t particletexture[MAX_PARTICLETEXTURES];
+skinframe_t *decalskinframe;
 
 // texture numbers in particle font
 static const int tex_smoke[8] = {0, 1, 2, 3, 4, 5, 6, 7};
@@ -216,6 +214,11 @@ cvar_t cl_decals = {CVAR_SAVE, "cl_decals", "1", "enables decals (bullet holes,
 cvar_t cl_decals_visculling = {CVAR_SAVE, "cl_decals_visculling", "1", "perform a very cheap check if each decal is visible before drawing"};
 cvar_t cl_decals_time = {CVAR_SAVE, "cl_decals_time", "20", "how long before decals start to fade away"};
 cvar_t cl_decals_fadetime = {CVAR_SAVE, "cl_decals_fadetime", "1", "how long decals take to fade away"};
+cvar_t cl_decals_newsystem = {CVAR_SAVE, "cl_decals_newsystem", "0", "enables new advanced decal system"};
+cvar_t cl_decals_newsystem_intensitymultiplier = {CVAR_SAVE, "cl_decals_newsystem_intensitymultiplier", "2", "boosts intensity of decals (because the distance fade can make them hard to see otherwise)"};
+cvar_t cl_decals_models = {CVAR_SAVE, "cl_decals_models", "0", "enables decals on animated models (if newsystem is also 1)"};
+cvar_t cl_decals_bias = {CVAR_SAVE, "cl_decals_bias", "0.125", "distance to bias decals from surface to prevent depth fighting"};
+cvar_t cl_decals_max = {CVAR_SAVE, "cl_decals_max", "4096", "maximum number of decals allowed to exist in the world at once"};
 
 
 void CL_Particles_ParseEffectInfo(const char *textstart, const char *textend)
@@ -496,12 +499,20 @@ void CL_Particles_Init (void)
        Cvar_RegisterVariable (&cl_decals_visculling);
        Cvar_RegisterVariable (&cl_decals_time);
        Cvar_RegisterVariable (&cl_decals_fadetime);
+       Cvar_RegisterVariable (&cl_decals_newsystem);
+       Cvar_RegisterVariable (&cl_decals_newsystem_intensitymultiplier);
+       Cvar_RegisterVariable (&cl_decals_models);
+       Cvar_RegisterVariable (&cl_decals_bias);
+       Cvar_RegisterVariable (&cl_decals_max);
 }
 
 void CL_Particles_Shutdown (void)
 {
 }
 
+void CL_SpawnDecalParticleForSurface(int hitent, const vec3_t org, const vec3_t normal, int color1, int color2, int texnum, float size, float alpha);
+void CL_SpawnDecalParticleForPoint(const vec3_t org, float maxdist, float size, float alpha, int texnum, int color1, int color2);
+
 // list of all 26 parameters:
 // ptype - any of the pt_ enum values (pt_static, pt_blood, etc), see ptype_t near the top of this file
 // pcolor1,pcolor2 - minimum and maximum ranges of color, randomly interpolated to decide particle color
@@ -519,7 +530,7 @@ void CL_Particles_Shutdown (void)
 // orientation - one of the PARTICLE_ values
 // staincolor1, staincolor2: minimum and maximum ranges of stain color, randomly interpolated to decide particle color (-1 to use none)
 // staintex: any of the tex_ values such as tex_smoke[rand()&7] or tex_particle (-1 to use none)
-static particle_t *CL_NewParticle(unsigned short ptypeindex, int pcolor1, int pcolor2, int ptex, float psize, float psizeincrease, float palpha, float palphafade, float pgravity, float pbounce, float px, float py, float pz, float pvx, float pvy, float pvz, float pairfriction, float pliquidfriction, float originjitter, float velocityjitter, qboolean pqualityreduction, float lifetime, float stretch, pblend_t blendmode, porientation_t orientation, int staincolor1, int staincolor2, int staintex)
+particle_t *CL_NewParticle(unsigned short ptypeindex, int pcolor1, int pcolor2, int ptex, float psize, float psizeincrease, float palpha, float palphafade, float pgravity, float pbounce, float px, float py, float pz, float pvx, float pvy, float pvz, float pairfriction, float pliquidfriction, float originjitter, float velocityjitter, qboolean pqualityreduction, float lifetime, float stretch, pblend_t blendmode, porientation_t orientation, int staincolor1, int staincolor2, int staintex)
 {
        int l1, l2, r, g, b;
        particle_t *part;
@@ -640,15 +651,57 @@ static particle_t *CL_NewParticle(unsigned short ptypeindex, int pcolor1, int pc
                trace = CL_TraceLine(part->org, endvec, MOVE_NOMONSTERS, NULL, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY, true, false, NULL, false);
                part->delayedcollisions = cl.time + lifetime * trace.fraction - 0.1;
        }
+
        return part;
 }
 
+static void CL_ImmediateBloodStain(particle_t *part)
+{
+       vec3_t v;
+       int staintex;
+
+       // blood creates a splash at spawn, not just at impact, this makes monsters bloody where they are shot
+       if (part->staintexnum >= 0 && cl_decals_newsystem.integer && cl_decals.integer)
+       {
+               VectorCopy(part->vel, v);
+               VectorNormalize(v);
+               staintex = part->staintexnum;
+               R_DecalSystem_SplatEntities(part->org, v, 1-((part->staincolor>>16)&255)*(1.0f/255.0f), 1-((part->staincolor>>8)&255)*(1.0f/255.0f), 1-((part->staincolor)&255)*(1.0f/255.0f), part->alpha*(1.0f/255.0f), particletexture[staintex].s1, particletexture[staintex].t1, particletexture[staintex].s2, particletexture[staintex].t2, part->size * 2);
+       }
+
+       // blood creates a splash at spawn, not just at impact, this makes monsters bloody where they are shot
+       if (part->typeindex == pt_blood && cl_decals_newsystem.integer && cl_decals.integer)
+       {
+               VectorCopy(part->vel, v);
+               VectorNormalize(v);
+               staintex = tex_blooddecal[rand()&7];
+               R_DecalSystem_SplatEntities(part->org, v, part->color[0]*(1.0f/255.0f), part->color[1]*(1.0f/255.0f), part->color[2]*(1.0f/255.0f), part->alpha*(1.0f/255.0f), particletexture[staintex].s1, particletexture[staintex].t1, particletexture[staintex].s2, particletexture[staintex].t2, part->size * 2);
+       }
+}
+
 void CL_SpawnDecalParticleForSurface(int hitent, const vec3_t org, const vec3_t normal, int color1, int color2, int texnum, float size, float alpha)
 {
        int l1, l2;
        decal_t *decal;
+       entity_render_t *ent = &cl.entities[hitent].render;
+       unsigned char color[3];
        if (!cl_decals.integer)
                return;
+       if (!ent->allowdecals)
+               return;
+
+       l2 = (int)lhrandom(0.5, 256.5);
+       l1 = 256 - l2;
+       color[0] = ((((color1 >> 16) & 0xFF) * l1 + ((color2 >> 16) & 0xFF) * l2) >> 8) & 0xFF;
+       color[1] = ((((color1 >>  8) & 0xFF) * l1 + ((color2 >>  8) & 0xFF) * l2) >> 8) & 0xFF;
+       color[2] = ((((color1 >>  0) & 0xFF) * l1 + ((color2 >>  0) & 0xFF) * l2) >> 8) & 0xFF;
+
+       if (cl_decals_newsystem.integer)
+       {
+               R_DecalSystem_SplatEntities(org, normal, color[0]*(1.0f/255.0f), color[1]*(1.0f/255.0f), color[2]*(1.0f/255.0f), alpha*(1.0f/255.0f), particletexture[texnum].s1, particletexture[texnum].t1, particletexture[texnum].s2, particletexture[texnum].t2, size);
+               return;
+       }
+
        for (;cl.free_decal < cl.max_decals && cl.decals[cl.free_decal].typeindex;cl.free_decal++);
        if (cl.free_decal >= cl.max_decals)
                return;
@@ -656,18 +709,17 @@ void CL_SpawnDecalParticleForSurface(int hitent, const vec3_t org, const vec3_t
        if (cl.num_decals < cl.free_decal)
                cl.num_decals = cl.free_decal;
        memset(decal, 0, sizeof(*decal));
+       decal->decalsequence = cl.decalsequence++;
        decal->typeindex = pt_decal;
        decal->texnum = texnum;
-       VectorAdd(org, normal, decal->org);
+       VectorMA(org, cl_decals_bias.value, normal, decal->org);
        VectorCopy(normal, decal->normal);
        decal->size = size;
        decal->alpha = alpha;
        decal->time2 = cl.time;
-       l2 = (int)lhrandom(0.5, 256.5);
-       l1 = 256 - l2;
-       decal->color[0] = ((((color1 >> 16) & 0xFF) * l1 + ((color2 >> 16) & 0xFF) * l2) >> 8) & 0xFF;
-       decal->color[1] = ((((color1 >>  8) & 0xFF) * l1 + ((color2 >>  8) & 0xFF) * l2) >> 8) & 0xFF;
-       decal->color[2] = ((((color1 >>  0) & 0xFF) * l1 + ((color2 >>  0) & 0xFF) * l2) >> 8) & 0xFF;
+       decal->color[0] = color[0];
+       decal->color[1] = color[1];
+       decal->color[2] = color[2];
        decal->owner = hitent;
        decal->clusterindex = -1000; // no vis culling unless we're sure
        if (hitent)
@@ -721,6 +773,7 @@ void CL_ParticleEffect_Fallback(int effectnameindex, float count, const vec3_t o
 {
        vec3_t center;
        matrix4x4_t tempmatrix;
+       particle_t *part;
        VectorLerp(originmins, 0.5, originmaxs, center);
        Matrix4x4_CreateTranslate(&tempmatrix, center[0], center[1], center[2]);
        if (effectnameindex == EFFECT_SVC_PARTICLE)
@@ -838,10 +891,18 @@ void CL_ParticleEffect_Fallback(int effectnameindex, float count, const vec3_t o
                else
                {
                        static double bloodaccumulator = 0;
+                       qboolean immediatebloodstain = true;
                        //CL_NewParticle(pt_alphastatic, 0x4f0000,0x7f0000, tex_particle, 2.5, 0, 256, 256, 0, 0, lhrandom(originmins[0], originmaxs[0]), lhrandom(originmins[1], originmaxs[1]), lhrandom(originmins[2], originmaxs[2]), 0, 0, 0, 1, 4, 0, 0, true, 0, 1, PBLEND_ALPHA, PARTICLE_BILLBOARD);
                        bloodaccumulator += count * 0.333 * cl_particles_quality.value;
                        for (;bloodaccumulator > 0;bloodaccumulator--)
-                               CL_NewParticle(pt_blood, 0xFFFFFF, 0xFFFFFF, tex_bloodparticle[rand()&7], 8, 0, cl_particles_blood_alpha.value * 768, cl_particles_blood_alpha.value * 384, 1, -1, lhrandom(originmins[0], originmaxs[0]), lhrandom(originmins[1], originmaxs[1]), lhrandom(originmins[2], originmaxs[2]), lhrandom(velocitymins[0], velocitymaxs[0]), lhrandom(velocitymins[1], velocitymaxs[1]), lhrandom(velocitymins[2], velocitymaxs[2]), 1, 4, 0, 64, true, 0, 1, PBLEND_INVMOD, PARTICLE_BILLBOARD, -1, -1, -1);
+                       {
+                               part = CL_NewParticle(pt_blood, 0xFFFFFF, 0xFFFFFF, tex_bloodparticle[rand()&7], 8, 0, cl_particles_blood_alpha.value * 768, cl_particles_blood_alpha.value * 384, 1, -1, lhrandom(originmins[0], originmaxs[0]), lhrandom(originmins[1], originmaxs[1]), lhrandom(originmins[2], originmaxs[2]), lhrandom(velocitymins[0], velocitymaxs[0]), lhrandom(velocitymins[1], velocitymaxs[1]), lhrandom(velocitymins[2], velocitymaxs[2]), 1, 4, 0, 64, true, 0, 1, PBLEND_INVMOD, PARTICLE_BILLBOARD, -1, -1, -1);
+                               if (immediatebloodstain && part)
+                               {
+                                       immediatebloodstain = false;
+                                       CL_ImmediateBloodStain(part);
+                               }
+                       }
                }
        }
        else if (effectnameindex == EFFECT_TE_SPARK)
@@ -1255,6 +1316,8 @@ void CL_ParticleTrail(int effectnameindex, float pcount, const vec3_t originmins
                vec_t traillen;
                vec_t trailstep;
                qboolean underwater;
+               qboolean immediatebloodstain;
+               particle_t *part;
                // note this runs multiple effects with the same name, each one spawns only one kind of particle, so some effects need more than one
                VectorLerp(originmins, 0.5, originmaxs, center);
                VectorLerp(velocitymins, 0.5, velocitymaxs, centervelocity);
@@ -1337,11 +1400,13 @@ void CL_ParticleTrail(int effectnameindex, float pcount, const vec3_t originmins
                                        {
                                                info->particleaccumulator += traillen / info->trailspacing * cl_particles_quality.value;
                                                trailstep = info->trailspacing / cl_particles_quality.value;
+                                               immediatebloodstain = false;
                                        }
                                        else
                                        {
                                                info->particleaccumulator += info->countabsolute + pcount * info->countmultiplier * cl_particles_quality.value;
                                                trailstep = 0;
+                                               immediatebloodstain = info->particletype == pt_blood || staintex;
                                        }
                                        info->particleaccumulator = bound(0, info->particleaccumulator, 16384);
                                        for (;info->particleaccumulator >= 1;info->particleaccumulator--)
@@ -1358,7 +1423,12 @@ void CL_ParticleTrail(int effectnameindex, float pcount, const vec3_t originmins
                                                        trailpos[2] = lhrandom(originmins[2], originmaxs[2]);
                                                }
                                                VectorRandom(rvec);
-                                               CL_NewParticle(info->particletype, info->color[0], info->color[1], tex, lhrandom(info->size[0], info->size[1]), info->size[2], lhrandom(info->alpha[0], info->alpha[1]), info->alpha[2], info->gravity, info->bounce, trailpos[0] + info->originoffset[0] + info->originjitter[0] * rvec[0], trailpos[1] + info->originoffset[1] + info->originjitter[1] * rvec[1], trailpos[2] + info->originoffset[2] + info->originjitter[2] * rvec[2], lhrandom(velocitymins[0], velocitymaxs[0]) * info->velocitymultiplier + info->velocityoffset[0] + info->velocityjitter[0] * rvec[0], lhrandom(velocitymins[1], velocitymaxs[1]) * info->velocitymultiplier + info->velocityoffset[1] + info->velocityjitter[1] * rvec[1], lhrandom(velocitymins[2], velocitymaxs[2]) * info->velocitymultiplier + info->velocityoffset[2] + info->velocityjitter[2] * rvec[2], info->airfriction, info->liquidfriction, 0, 0, info->countabsolute <= 0, lhrandom(info->time[0], info->time[1]), info->stretchfactor, info->blendmode, info->orientation, info->staincolor[0], info->staincolor[1], staintex);
+                                               part = CL_NewParticle(info->particletype, info->color[0], info->color[1], tex, lhrandom(info->size[0], info->size[1]), info->size[2], lhrandom(info->alpha[0], info->alpha[1]), info->alpha[2], info->gravity, info->bounce, trailpos[0] + info->originoffset[0] + info->originjitter[0] * rvec[0], trailpos[1] + info->originoffset[1] + info->originjitter[1] * rvec[1], trailpos[2] + info->originoffset[2] + info->originjitter[2] * rvec[2], lhrandom(velocitymins[0], velocitymaxs[0]) * info->velocitymultiplier + info->velocityoffset[0] + info->velocityjitter[0] * rvec[0], lhrandom(velocitymins[1], velocitymaxs[1]) * info->velocitymultiplier + info->velocityoffset[1] + info->velocityjitter[1] * rvec[1], lhrandom(velocitymins[2], velocitymaxs[2]) * info->velocitymultiplier + info->velocityoffset[2] + info->velocityjitter[2] * rvec[2], info->airfriction, info->liquidfriction, 0, 0, info->countabsolute <= 0, lhrandom(info->time[0], info->time[1]), info->stretchfactor, info->blendmode, info->orientation, info->staincolor[0], info->staincolor[1], staintex);
+                                               if (immediatebloodstain && part)
+                                               {
+                                                       immediatebloodstain = false;
+                                                       CL_ImmediateBloodStain(part);
+                                               }
                                                if (trailstep)
                                                        VectorMA(trailpos, trailstep, traildir, trailpos);
                                        }
@@ -1836,9 +1906,10 @@ static void R_InitParticleTexture (void)
        // we invert it again during the blendfunc to make it work...
 
 #ifndef DUMPPARTICLEFONT
-       particlefonttexture = loadtextureimage(particletexturepool, "particles/particlefont.tga", false, TEXF_ALPHA | TEXF_PRECACHE | TEXF_FORCELINEAR, true);
-       if (particlefonttexture)
+       decalskinframe = R_SkinFrame_LoadExternal("particles/particlefont.tga", TEXF_ALPHA | TEXF_PRECACHE | TEXF_FORCELINEAR, false);
+       if (decalskinframe)
        {
+               particlefonttexture = decalskinframe->base;
                // TODO maybe allow custom grid size?
                particlefontwidth = image_width;
                particlefontheight = image_height;
@@ -1979,7 +2050,8 @@ static void R_InitParticleTexture (void)
                Image_WriteTGABGRA ("particles/particlefont.tga", PARTICLEFONTSIZE, PARTICLEFONTSIZE, particletexturedata);
 #endif
 
-               particlefonttexture = R_LoadTexture2D(particletexturepool, "particlefont", PARTICLEFONTSIZE, PARTICLEFONTSIZE, particletexturedata, TEXTYPE_BGRA, TEXF_ALPHA | TEXF_PRECACHE | TEXF_FORCELINEAR, NULL);
+               decalskinframe = R_SkinFrame_LoadInternalBGRA("particlefont", TEXF_ALPHA | TEXF_PRECACHE | TEXF_FORCELINEAR, particletexturedata, PARTICLEFONTSIZE, PARTICLEFONTSIZE);
+               particlefonttexture = decalskinframe->base;
 
                Mem_Free(particletexturedata);
        }
@@ -2097,6 +2169,8 @@ static void r_part_shutdown(void)
 
 static void r_part_newmap(void)
 {
+       if (decalskinframe)
+               R_SkinFrame_MarkUsed(decalskinframe);
        CL_Particles_LoadEffectInfo();
 }
 
@@ -2133,8 +2207,9 @@ void R_DrawDecal_TransparentCallback(const entity_render_t *ent, const rtlight_t
        float alphascale = (1.0f / 65536.0f) * cl_particles_alpha.value * r_refdef.view.colorscale;
        float particle_vertex3f[BATCHSIZE*12], particle_texcoord2f[BATCHSIZE*8], particle_color4f[BATCHSIZE*16];
 
-       r_refdef.stats.decals += numsurfaces;
-       R_Mesh_Matrix(&identitymatrix);
+       RSurf_ActiveWorldEntity();
+
+       r_refdef.stats.drawndecals += numsurfaces;
        R_Mesh_ResetTextureState();
        R_Mesh_VertexPointer(particle_vertex3f, 0, 0);
        R_Mesh_TexCoordPointer(0, 2, particle_texcoord2f, 0, 0);
@@ -2155,7 +2230,7 @@ void R_DrawDecal_TransparentCallback(const entity_render_t *ent, const rtlight_t
                c4f = particle_color4f + 16*surfacelistindex;
                ca = d->alpha * alphascale;
                if (r_refdef.fogenabled)
-                       ca *= FogPoint_World(d->org);
+                       ca *= RSurf_FogVertex(d->org);
                Vector4Set(c4f, d->color[0] * ca, d->color[1] * ca, d->color[2] * ca, 1);
                Vector4Copy(c4f, c4f + 4);
                Vector4Copy(c4f, c4f + 8);
@@ -2201,16 +2276,18 @@ void R_DrawDecal_TransparentCallback(const entity_render_t *ent, const rtlight_t
 void R_DrawDecals (void)
 {
        int i;
+       int drawdecals = r_drawdecals.integer;
        decal_t *decal;
        float frametime;
        float decalfade;
        float drawdist2;
+       int killsequence = cl.decalsequence - max(0, cl_decals_max.integer);
 
        frametime = bound(0, cl.time - cl.decals_updatetime, 1);
        cl.decals_updatetime = bound(cl.time - 1, cl.decals_updatetime + frametime, cl.time + 1);
 
        // LordHavoc: early out conditions
-       if ((!cl.num_decals) || (!r_drawdecals.integer))
+       if (!cl.num_decals)
                return;
 
        decalfade = frametime * 256 / cl_decals_fadetime.value;
@@ -2222,6 +2299,9 @@ void R_DrawDecals (void)
                if (!decal->typeindex)
                        continue;
 
+               if (killsequence - decal->decalsequence > 0)
+                       goto killdecal;
+
                if (cl.time > decal->time2 + cl_decals_time.value)
                {
                        decal->alpha -= decalfade;
@@ -2243,6 +2323,9 @@ void R_DrawDecals (void)
                if(cl_decals_visculling.integer && decal->clusterindex > -1000 && !CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, decal->clusterindex))
                        continue;
 
+               if (!drawdecals)
+                       continue;
+
                if (DotProduct(r_refdef.view.origin, decal->normal) > DotProduct(decal->org, decal->normal) && VectorDistance2(decal->org, r_refdef.view.origin) < drawdist2 * (decal->size * decal->size))
                        R_MeshQueue_AddTransparent(decal->org, R_DrawDecal_TransparentCallback, NULL, i, NULL);
                continue;
@@ -2264,6 +2347,8 @@ killdecal:
                memcpy(cl.decals, olddecals, cl.num_decals * sizeof(decal_t));
                Mem_Free(olddecals);
        }
+
+       r_refdef.stats.totaldecals = cl.num_decals;
 }
 
 void R_DrawParticle_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
@@ -2280,10 +2365,11 @@ void R_DrawParticle_TransparentCallback(const entity_render_t *ent, const rtligh
        vec4_t colormultiplier;
        float particle_vertex3f[BATCHSIZE*12], particle_texcoord2f[BATCHSIZE*8], particle_color4f[BATCHSIZE*16];
 
+       RSurf_ActiveWorldEntity();
+
        Vector4Set(colormultiplier, r_refdef.view.colorscale * (1.0 / 256.0f), r_refdef.view.colorscale * (1.0 / 256.0f), r_refdef.view.colorscale * (1.0 / 256.0f), cl_particles_alpha.value * (1.0 / 256.0f));
 
        r_refdef.stats.particles += numsurfaces;
-       R_Mesh_Matrix(&identitymatrix);
        R_Mesh_ResetTextureState();
        R_Mesh_VertexPointer(particle_vertex3f, 0, 0);
        R_Mesh_TexCoordPointer(0, 2, particle_texcoord2f, 0, 0);
@@ -2313,7 +2399,7 @@ void R_DrawParticle_TransparentCallback(const entity_render_t *ent, const rtligh
                case PBLEND_ADD:
                        // additive and modulate can just fade out in fog (this is correct)
                        if (r_refdef.fogenabled)
-                               c4f[3] *= FogPoint_World(p->org);
+                               c4f[3] *= RSurf_FogVertex(p->org);
                        // collapse alpha into color for these blends (so that the particlefont does not need alpha on most textures)
                        c4f[0] *= c4f[3];
                        c4f[1] *= c4f[3];
@@ -2332,7 +2418,7 @@ void R_DrawParticle_TransparentCallback(const entity_render_t *ent, const rtligh
                        // mix in the fog color
                        if (r_refdef.fogenabled)
                        {
-                               fog = FogPoint_World(p->org);
+                               fog = RSurf_FogVertex(p->org);
                                ifog = 1 - fog;
                                c4f[0] = c4f[0] * fog + r_refdef.fogcolor[0] * ifog;
                                c4f[1] = c4f[1] * fog + r_refdef.fogcolor[1] * ifog;
@@ -2481,6 +2567,7 @@ void R_DrawParticle_TransparentCallback(const entity_render_t *ent, const rtligh
 void R_DrawParticles (void)
 {
        int i, a, content;
+       int drawparticles = r_drawparticles.integer;
        float minparticledist;
        particle_t *p;
        float gravity, dvel, decalfade, frametime, f, dist, oldorg[3];
@@ -2493,7 +2580,7 @@ void R_DrawParticles (void)
        cl.particles_updatetime = bound(cl.time - 1, cl.particles_updatetime + frametime, cl.time + 1);
 
        // LordHavoc: early out conditions
-       if ((!cl.num_particles) || (!r_drawparticles.integer))
+       if (!cl.num_particles)
                return;
 
        minparticledist = DotProduct(r_refdef.view.origin, r_refdef.view.forward) + 4.0f;
@@ -2658,7 +2745,8 @@ void R_DrawParticles (void)
                }
                else if (p->delayedspawn)
                        continue;
-
+               if (!drawparticles)
+                       continue;
                // don't render particles too close to the view (they chew fillrate)
                // also don't render particles behind the view (useless)
                // further checks to cull to the frustum would be too slow here