]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - model_shared.c
Reworked v_isometric code significantly, it now defaults to a proper isometric view...
[xonotic/darkplaces.git] / model_shared.c
index 2be02ff9b017610520bbc8189bb624096b7284e3..5fea22985f3ccf20c3ffe2dd70ebd46abaabceba 100644 (file)
@@ -2011,7 +2011,7 @@ void Mod_LoadQ3Shaders(void)
                                                        // multilayer terrain shader or similar
                                                        shader.textureblendalpha = true;
                                                        if (mod_q3shader_force_terrain_alphaflag.integer)
-                                                               shader.layers[0].texflags |= TEXF_ALPHA;
+                                                               shader.layers[0].dptexflags |= TEXF_ALPHA;
                                                }
                                        }
 
@@ -2023,29 +2023,29 @@ void Mod_LoadQ3Shaders(void)
                                                        layer->blendfunc[0] = GL_SRC_ALPHA;
                                        }
                                        
-                                       layer->texflags = 0;
+                                       layer->dptexflags = 0;
                                        if (layer->alphatest)
-                                               layer->texflags |= TEXF_ALPHA;
+                                               layer->dptexflags |= TEXF_ALPHA;
                                        switch(layer->blendfunc[0])
                                        {
                                                case GL_SRC_ALPHA:
                                                case GL_ONE_MINUS_SRC_ALPHA:
-                                                       layer->texflags |= TEXF_ALPHA;
+                                                       layer->dptexflags |= TEXF_ALPHA;
                                                        break;
                                        }
                                        switch(layer->blendfunc[1])
                                        {
                                                case GL_SRC_ALPHA:
                                                case GL_ONE_MINUS_SRC_ALPHA:
-                                                       layer->texflags |= TEXF_ALPHA;
+                                                       layer->dptexflags |= TEXF_ALPHA;
                                                        break;
                                        }
                                        if (!(shader.surfaceparms & Q3SURFACEPARM_NOMIPMAPS))
-                                               layer->texflags |= TEXF_MIPMAP;
+                                               layer->dptexflags |= TEXF_MIPMAP;
                                        if (!(shader.textureflags & Q3TEXTUREFLAG_NOPICMIP))
-                                               layer->texflags |= TEXF_PICMIP | TEXF_COMPRESS;
+                                               layer->dptexflags |= TEXF_PICMIP | TEXF_COMPRESS;
                                        if (layer->clampmap)
-                                               layer->texflags |= TEXF_CLAMP;
+                                               layer->dptexflags |= TEXF_CLAMP;
                                        continue;
                                }
                                numparameters = 0;
@@ -2412,9 +2412,9 @@ q3shaderinfo_t *Mod_LookupQ3Shader(const char *name)
        return NULL;
 }
 
-texture_shaderpass_t *Mod_CreateShaderPass(skinframe_t *skinframe)
+texture_shaderpass_t *Mod_CreateShaderPass(mempool_t *mempool, skinframe_t *skinframe)
 {
-       texture_shaderpass_t *shaderpass = (texture_shaderpass_t *)Mem_Alloc(loadmodel->mempool, sizeof(*shaderpass));
+       texture_shaderpass_t *shaderpass = (texture_shaderpass_t *)Mem_Alloc(mempool, sizeof(*shaderpass));
        shaderpass->framerate = 0.0f;
        shaderpass->numframes = 1;
        shaderpass->blendfunc[0] = GL_ONE;
@@ -2427,10 +2427,10 @@ texture_shaderpass_t *Mod_CreateShaderPass(skinframe_t *skinframe)
        return shaderpass;
 }
 
-texture_shaderpass_t *Mod_CreateShaderPassFromQ3ShaderLayer(q3shaderinfo_layer_t *layer, int layerindex, int texflags, const char *texturename)
+texture_shaderpass_t *Mod_CreateShaderPassFromQ3ShaderLayer(mempool_t *mempool, const char *modelname, q3shaderinfo_layer_t *layer, int layerindex, int texflags, const char *texturename)
 {
        int j;
-       texture_shaderpass_t *shaderpass = (texture_shaderpass_t *)Mem_Alloc(loadmodel->mempool, sizeof(*shaderpass));
+       texture_shaderpass_t *shaderpass = (texture_shaderpass_t *)Mem_Alloc(mempool, sizeof(*shaderpass));
        shaderpass->alphatest = layer->alphatest != 0;
        shaderpass->framerate = layer->framerate;
        shaderpass->numframes = layer->numframes;
@@ -2442,21 +2442,11 @@ texture_shaderpass_t *Mod_CreateShaderPassFromQ3ShaderLayer(q3shaderinfo_layer_t
        for (j = 0; j < Q3MAXTCMODS && layer->tcmods[j].tcmod != Q3TCMOD_NONE; j++)
                shaderpass->tcmods[j] = layer->tcmods[j];
        for (j = 0; j < layer->numframes; j++)
-       {
-               if (cls.state == ca_dedicated)
-               {
-                       shaderpass->skinframes[j] = NULL;
-               }
-               else if (!(shaderpass->skinframes[j] = R_SkinFrame_LoadExternal(layer->texturename[j], texflags, false)))
-               {
-                       Con_Printf("^1%s:^7 could not load texture ^3\"%s\"^7 (frame %i) for layer %i of shader ^2\"%s\"\n", loadmodel->name, layer->texturename[j], j, layerindex, texturename);
-                       shaderpass->skinframes[j] = R_SkinFrame_LoadMissing();
-               }
-       }
+               shaderpass->skinframes[j] = R_SkinFrame_LoadExternal(layer->texturename[j], texflags, false, true);
        return shaderpass;
 }
 
-qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qboolean warnmissing, qboolean fallback, int defaulttexflags)
+qboolean Mod_LoadTextureFromQ3Shader(mempool_t *mempool, const char *modelname, texture_t *texture, const char *name, qboolean warnmissing, qboolean fallback, int defaulttexflags, int defaultmaterialflags)
 {
        int texflagsmask, texflagsor;
        qboolean success = true;
@@ -2467,6 +2457,7 @@ qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qbool
        texture->basealpha = 1.0f;
        shader = name[0] ? Mod_LookupQ3Shader(name) : NULL;
 
+       // allow disabling of picmip or compression by defaulttexflags
        texflagsmask = ~0;
        if(!(defaulttexflags & TEXF_PICMIP))
                texflagsmask &= ~TEXF_PICMIP;
@@ -2491,15 +2482,12 @@ qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qbool
        if (shader)
        {
                if (developer_loading.integer)
-                       Con_Printf("%s: loaded shader for %s\n", loadmodel->name, name);
-
-               // allow disabling of picmip or compression by defaulttexflags
-               texture->textureflags = (shader->textureflags & texflagsmask) | texflagsor;
+                       Con_Printf("%s: loaded shader for %s\n", modelname, name);
 
                if (shader->surfaceparms & Q3SURFACEPARM_SKY)
                {
-                       texture->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
-                       if (shader->skyboxname[0])
+                       texture->basematerialflags = MATERIALFLAG_SKY;
+                       if (shader->skyboxname[0] && loadmodel)
                        {
                                // quake3 seems to append a _ to the skybox name, so this must do so as well
                                dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
@@ -2625,6 +2613,9 @@ nothing                GL_ZERO GL_ONE
                                materiallayer = rgbgenvertexlayer;
                                endofprelayers = rgbgenvertexlayer;
                                firstpostlayer = rgbgenvertexlayer + 1;
+                               // special case for rgbgen vertex if MATERIALFLAG_VERTEXCOLOR is expected on this material
+                               if (defaultmaterialflags & MATERIALFLAG_VERTEXCOLOR)
+                                       texture->basematerialflags |= MATERIALFLAG_VERTEXCOLOR;
                        }
                        else if (rgbgendiffuselayer >= 0)
                        {
@@ -2646,19 +2637,19 @@ nothing                GL_ZERO GL_ONE
                        // convert the main material layer
                        // FIXME: if alphagenspecularlayer is used, we should pass a specular texture name to R_SkinFrame_LoadExternal and have it load that texture instead of the assumed name for _gloss texture
                        if (materiallayer >= 0)
-                               texture->materialshaderpass = texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(&shader->layers[materiallayer], materiallayer, (shader->layers[materiallayer].texflags & texflagsmask) | texflagsor, texture->name);
+                               texture->materialshaderpass = texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(mempool, modelname, &shader->layers[materiallayer], materiallayer, (shader->layers[materiallayer].dptexflags & texflagsmask) | texflagsor, texture->name);
                        // convert the terrain background blend layer (if any)
                        if (terrainbackgroundlayer >= 0)
-                               texture->backgroundshaderpass = texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(&shader->layers[terrainbackgroundlayer], terrainbackgroundlayer, (shader->layers[terrainbackgroundlayer].texflags & texflagsmask) | texflagsor, texture->name);
+                               texture->backgroundshaderpass = texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(mempool, modelname, &shader->layers[terrainbackgroundlayer], terrainbackgroundlayer, (shader->layers[terrainbackgroundlayer].dptexflags & texflagsmask) | texflagsor, texture->name);
                        // convert the prepass layers (if any)
                        texture->startpreshaderpass = shaderpassindex;
                        for (i = 0; i < endofprelayers; i++)
-                               texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(&shader->layers[i], i, (shader->layers[i].texflags & texflagsmask) | texflagsor, texture->name);
+                               texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(mempool, modelname, &shader->layers[i], i, (shader->layers[i].dptexflags & texflagsmask) | texflagsor, texture->name);
                        texture->endpreshaderpass = shaderpassindex;
                        texture->startpostshaderpass = shaderpassindex;
                        // convert the postpass layers (if any)
                        for (i = firstpostlayer; i < shader->numlayers; i++)
-                               texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(&shader->layers[i], i, (shader->layers[i].texflags & texflagsmask) | texflagsor, texture->name);
+                               texture->shaderpasses[shaderpassindex++] = Mod_CreateShaderPassFromQ3ShaderLayer(mempool, modelname, &shader->layers[i], i, (shader->layers[i].dptexflags & texflagsmask) | texflagsor, texture->name);
                        texture->startpostshaderpass = shaderpassindex;
                }
 
@@ -2768,38 +2759,38 @@ nothing                GL_ZERO GL_ONE
                if (shader->dpmeshcollisions)
                        texture->basematerialflags |= MATERIALFLAG_MESHCOLLISIONS;
                if (shader->dpshaderkill && developer_extra.integer)
-                       Con_DPrintf("^1%s:^7 killing shader ^3\"%s\" because of cvar\n", loadmodel->name, name);
+                       Con_DPrintf("^1%s:^7 killing shader ^3\"%s\" because of cvar\n", modelname, name);
        }
        else if (!strcmp(texture->name, "noshader") || !texture->name[0])
        {
                if (developer_extra.integer)
-                       Con_DPrintf("^1%s:^7 using fallback noshader material for ^3\"%s\"\n", loadmodel->name, name);
+                       Con_DPrintf("^1%s:^7 using fallback noshader material for ^3\"%s\"\n", modelname, name);
                texture->supercontents = SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
        }
        else if (!strcmp(texture->name, "common/nodraw") || !strcmp(texture->name, "textures/common/nodraw"))
        {
                if (developer_extra.integer)
-                       Con_DPrintf("^1%s:^7 using fallback nodraw material for ^3\"%s\"\n", loadmodel->name, name);
+                       Con_DPrintf("^1%s:^7 using fallback nodraw material for ^3\"%s\"\n", modelname, name);
                texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
                texture->supercontents = SUPERCONTENTS_SOLID;
        }
        else
        {
                if (developer_extra.integer)
-                       Con_DPrintf("^1%s:^7 No shader found for texture ^3\"%s\"\n", loadmodel->name, texture->name);
+                       Con_DPrintf("^1%s:^7 No shader found for texture ^3\"%s\"\n", modelname, texture->name);
                if (texture->surfaceflags & Q3SURFACEFLAG_NODRAW)
                {
-                       texture->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
+                       texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
                        texture->supercontents = SUPERCONTENTS_SOLID;
                }
                else if (texture->surfaceflags & Q3SURFACEFLAG_SKY)
                {
-                       texture->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
+                       texture->basematerialflags = MATERIALFLAG_SKY;
                        texture->supercontents = SUPERCONTENTS_SKY;
                }
                else
                {
-                       texture->basematerialflags |= MATERIALFLAG_WALL;
+                       texture->basematerialflags = defaultmaterialflags;
                        texture->supercontents = SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
                }
                if(cls.state == ca_dedicated)
@@ -2809,29 +2800,26 @@ nothing                GL_ZERO GL_ONE
                }
                else
                {
-                       if (fallback)
+                       skinframe_t *skinframe = R_SkinFrame_LoadExternal(texture->name, defaulttexflags, false, fallback);
+                       if (skinframe)
                        {
-                               texture->materialshaderpass = texture->shaderpasses[0] = Mod_CreateShaderPass(R_SkinFrame_LoadExternal(texture->name, defaulttexflags, false));
-                               if (texture->materialshaderpass->skinframes[0])
-                               {
-                                       if (texture->materialshaderpass->skinframes[0]->hasalpha)
-                                               texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
-                                       if (texture->q2contents)
-                                               texture->supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(loadmodel, texture->q2contents);
-                               }
-                               else
-                                       success = false;
+                               texture->materialshaderpass = texture->shaderpasses[0] = Mod_CreateShaderPass(mempool, skinframe);
+                               if (texture->materialshaderpass->skinframes[0]->hasalpha)
+                                       texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
+                               if (texture->q2contents)
+                                       texture->supercontents = Mod_Q2BSP_SuperContentsFromNativeContents(texture->q2contents);
                        }
                        else
                                success = false;
                        if (!success && warnmissing)
-                               Con_Printf("^1%s:^7 could not load texture ^3\"%s\"\n", loadmodel->name, texture->name);
+                               Con_Printf("^1%s:^7 could not load texture ^3\"%s\"\n", modelname, texture->name);
                }
        }
        // init the animation variables
        texture->currentframe = texture;
+       texture->currentmaterialflags = texture->basematerialflags;
        if (!texture->materialshaderpass)
-               texture->materialshaderpass = texture->shaderpasses[0] = Mod_CreateShaderPass(R_SkinFrame_LoadMissing());
+               texture->materialshaderpass = texture->shaderpasses[0] = Mod_CreateShaderPass(mempool, R_SkinFrame_LoadMissing());
        if (!texture->materialshaderpass->skinframes[0])
                texture->materialshaderpass->skinframes[0] = R_SkinFrame_LoadMissing();
        texture->currentskinframe = texture->materialshaderpass ? texture->materialshaderpass->skinframes[0] : NULL;
@@ -2839,6 +2827,58 @@ nothing                GL_ZERO GL_ONE
        return success;
 }
 
+void Mod_LoadCustomMaterial(mempool_t *mempool, texture_t *texture, const char *name, int supercontents, int materialflags, skinframe_t *skinframe)
+{
+       if (!(materialflags & (MATERIALFLAG_WALL | MATERIALFLAG_SKY)))
+               Con_DPrintf("^1Custom texture ^3\"%s\" does not have MATERIALFLAG_WALL set\n", texture->name);
+
+       strlcpy(texture->name, name, sizeof(texture->name));
+       texture->basealpha = 1.0f;
+       texture->basematerialflags = materialflags;
+       texture->supercontents = supercontents;
+
+       texture->offsetmapping = (mod_noshader_default_offsetmapping.value) ? OFFSETMAPPING_DEFAULT : OFFSETMAPPING_OFF;
+       texture->offsetscale = 1;
+       texture->offsetbias = 0;
+       texture->specularscalemod = 1;
+       texture->specularpowermod = 1;
+       texture->rtlightambient = 0;
+       texture->transparentsort = TRANSPARENTSORT_DISTANCE;
+       // WHEN ADDING DEFAULTS HERE, REMEMBER TO PUT DEFAULTS IN ALL LOADERS
+       // JUST GREP FOR "specularscalemod = 1".
+
+       if (developer_extra.integer)
+               Con_DPrintf("^1Custom texture ^3\"%s\"\n", texture->name);
+       if (skinframe)
+               texture->materialshaderpass = texture->shaderpasses[0] = Mod_CreateShaderPass(mempool, skinframe);
+
+       // init the animation variables
+       texture->currentmaterialflags = texture->basematerialflags;
+       texture->currentframe = texture;
+       texture->currentskinframe = skinframe;
+       texture->backgroundcurrentskinframe = NULL;
+}
+
+void Mod_UnloadCustomMaterial(texture_t *texture, qboolean purgeskins)
+{
+       int i, j;
+       for (i = 0; i < sizeof(texture->shaderpasses) / sizeof(texture->shaderpasses[0]); i++)
+       {
+               if (texture->shaderpasses[i])
+               {
+                       if (purgeskins)
+                               for (j = 0; j < sizeof(texture->shaderpasses[i]->skinframes) / sizeof(skinframe_t *);j++)
+                                       if (texture->shaderpasses[i]->skinframes[j] && texture->shaderpasses[i]->skinframes[j]->base)
+                                               R_SkinFrame_PurgeSkinFrame(texture->shaderpasses[i]->skinframes[j]);
+                       Mem_Free(texture->shaderpasses[i]);
+                       texture->shaderpasses[i] = NULL;
+               }
+       }
+       texture->materialshaderpass = NULL;
+       texture->currentskinframe = NULL;
+       texture->backgroundcurrentskinframe = NULL;
+}
+
 skinfile_t *Mod_LoadSkinFiles(void)
 {
        int i, words, line, wordsoverflow;
@@ -3732,7 +3772,7 @@ static void Mod_GenerateLightmaps_LightPoint(dp_model_t *model, const vec3_t pos
                        continue;
                if (model && model->TraceLine)
                {
-                       model->TraceLine(model, NULL, NULL, &trace, pos, lightorigin, SUPERCONTENTS_VISBLOCKERMASK, SUPERCONTENTS_SKY);
+                       model->TraceLine(model, NULL, NULL, &trace, pos, lightorigin, SUPERCONTENTS_SOLID, 0, MATERIALFLAGMASK_TRANSLUCENT | MATERIALFLAG_NOSHADOW);
                        if (trace.fraction < 1)
                                continue;
                }
@@ -3934,7 +3974,7 @@ static void Mod_GenerateLightmaps_SamplePoint(const float *pos, const float *nor
                                if (!normal)
                                {
                                        // for light grid we'd better check visibility of the offset point
-                                       cl.worldmodel->TraceLine(cl.worldmodel, NULL, NULL, &trace, pos, offsetpos, SUPERCONTENTS_VISBLOCKERMASK, SUPERCONTENTS_SKY);
+                                       cl.worldmodel->TraceLine(cl.worldmodel, NULL, NULL, &trace, pos, offsetpos, SUPERCONTENTS_SOLID, 0, MATERIALFLAGMASK_TRANSLUCENT | MATERIALFLAG_NOSHADOW);
                                        if (trace.fraction < 1)
                                                VectorLerp(pos, trace.fraction, offsetpos, offsetpos);
                                }
@@ -4544,3 +4584,303 @@ static void Mod_GenerateLightmaps_f(void)
        }
        Mod_GenerateLightmaps(cl.worldmodel);
 }
+
+void Mod_Mesh_Create(dp_model_t *mod, const char *name)
+{
+       memset(mod, 0, sizeof(*mod));
+       strlcpy(mod->name, name, sizeof(mod->name));
+       mod->mempool = Mem_AllocPool(name, 0, NULL);
+       mod->texturepool = R_AllocTexturePool();
+       mod->Draw = R_Q1BSP_Draw;
+       mod->DrawDepth = R_Q1BSP_DrawDepth;
+       mod->DrawDebug = R_Q1BSP_DrawDebug;
+       mod->DrawPrepass = R_Q1BSP_DrawPrepass;
+       mod->GetLightInfo = R_Q1BSP_GetLightInfo;
+       mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
+       mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
+       mod->DrawLight = R_Q1BSP_DrawLight;
+}
+
+void Mod_Mesh_Destroy(dp_model_t *mod)
+{
+       Mod_UnloadModel(mod);
+}
+
+// resets the mesh model to have no geometry to render, ready for a new frame -
+// the mesh will be prepared for rendering later using Mod_Mesh_Finalize
+void Mod_Mesh_Reset(dp_model_t *mod)
+{
+       mod->num_surfaces = 0;
+       mod->surfmesh.num_vertices = 0;
+       mod->surfmesh.num_triangles = 0;
+       memset(mod->surfmesh.data_vertexhash, -1, mod->surfmesh.num_vertexhashsize * sizeof(*mod->surfmesh.data_vertexhash));
+       mod->DrawSky = NULL; // will be set if a texture needs it
+       mod->DrawAddWaterPlanes = NULL; // will be set if a texture needs it
+}
+
+texture_t *Mod_Mesh_GetTexture(dp_model_t *mod, const char *name, int defaultdrawflags, int defaulttexflags, int defaultmaterialflags)
+{
+       int i;
+       texture_t *t;
+       for (i = 0; i < mod->num_textures; i++)
+               if (!strcmp(mod->data_textures[i].name, name))
+                       return mod->data_textures + i;
+       if (mod->max_textures <= mod->num_textures)
+       {
+               texture_t *oldtextures = mod->data_textures;
+               mod->max_textures = max(mod->max_textures * 2, 1024);
+               mod->data_textures = (texture_t *)Mem_Realloc(mod->mempool, mod->data_textures, mod->max_textures * sizeof(*mod->data_textures));
+               // update the pointers
+               for (i = 0; i < mod->num_surfaces; i++)
+                       mod->data_surfaces[i].texture = mod->data_textures + (mod->data_surfaces[i].texture - oldtextures);
+       }
+       t = &mod->data_textures[mod->num_textures++];
+       Mod_LoadTextureFromQ3Shader(mod->mempool, mod->name, t, name, false, true, defaulttexflags, defaultmaterialflags);
+       switch (defaultdrawflags & DRAWFLAG_MASK)
+       {
+       case DRAWFLAG_ADDITIVE:
+               t->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED;
+               t->currentmaterialflags = t->basematerialflags;
+               break;
+       case DRAWFLAG_MODULATE:
+               t->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_BLENDED;
+               t->currentmaterialflags = t->basematerialflags;
+               t->customblendfunc[0] = GL_DST_COLOR;
+               t->customblendfunc[1] = GL_ZERO;
+               break;
+       case DRAWFLAG_2XMODULATE:
+               t->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_BLENDED;
+               t->currentmaterialflags = t->basematerialflags;
+               t->customblendfunc[0] = GL_DST_COLOR;
+               t->customblendfunc[1] = GL_SRC_COLOR;
+               break;
+       case DRAWFLAG_SCREEN:
+               t->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_BLENDED;
+               t->currentmaterialflags = t->basematerialflags;
+               t->customblendfunc[0] = GL_ONE_MINUS_DST_COLOR;
+               t->customblendfunc[1] = GL_ONE;
+               break;
+       default:
+               break;
+       }
+       return t;
+}
+
+msurface_t *Mod_Mesh_AddSurface(dp_model_t *mod, texture_t *tex, qboolean batchwithprevioussurface)
+{
+       msurface_t *surf;
+       // batch if possible; primarily useful for UI rendering where bounding boxes don't matter
+       if (batchwithprevioussurface && mod->num_surfaces > 0 && mod->data_surfaces[mod->num_surfaces - 1].texture == tex)
+               return mod->data_surfaces + mod->num_surfaces - 1;
+       // create new surface
+       if (mod->max_surfaces == mod->num_surfaces)
+       {
+               mod->max_surfaces = 2 * max(mod->num_surfaces, 64);
+               mod->data_surfaces = (msurface_t *)Mem_Realloc(mod->mempool, mod->data_surfaces, mod->max_surfaces * sizeof(*mod->data_surfaces));
+               mod->sortedmodelsurfaces = (int *)Mem_Realloc(mod->mempool, mod->sortedmodelsurfaces, mod->max_surfaces * sizeof(*mod->sortedmodelsurfaces));
+       }
+       surf = mod->data_surfaces + mod->num_surfaces;
+       mod->num_surfaces++;
+       memset(surf, 0, sizeof(*surf));
+       surf->texture = tex;
+       surf->num_firsttriangle = mod->surfmesh.num_triangles;
+       surf->num_firstvertex = mod->surfmesh.num_vertices;
+       if (tex->basematerialflags & (MATERIALFLAG_SKY))
+               mod->DrawSky = R_Q1BSP_DrawSky;
+       if (tex->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA))
+               mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
+       return surf;
+}
+
+int Mod_Mesh_IndexForVertex(dp_model_t *mod, msurface_t *surf, float x, float y, float z, float nx, float ny, float nz, float s, float t, float u, float v, float r, float g, float b, float a)
+{
+       int hashindex, h, vnum, mask;
+       surfmesh_t *mesh = &mod->surfmesh;
+       if (mesh->max_vertices == mesh->num_vertices)
+       {
+               mesh->max_vertices = max(mesh->num_vertices * 2, 256);
+               mesh->data_vertex3f = (float *)Mem_Realloc(mod->mempool, mesh->data_vertex3f, mesh->max_vertices * sizeof(float[3]));
+               mesh->data_svector3f = (float *)Mem_Realloc(mod->mempool, mesh->data_svector3f, mesh->max_vertices * sizeof(float[3]));
+               mesh->data_tvector3f = (float *)Mem_Realloc(mod->mempool, mesh->data_tvector3f, mesh->max_vertices * sizeof(float[3]));
+               mesh->data_normal3f = (float *)Mem_Realloc(mod->mempool, mesh->data_normal3f, mesh->max_vertices * sizeof(float[3]));
+               mesh->data_texcoordtexture2f = (float *)Mem_Realloc(mod->mempool, mesh->data_texcoordtexture2f, mesh->max_vertices * sizeof(float[2]));
+               mesh->data_texcoordlightmap2f = (float *)Mem_Realloc(mod->mempool, mesh->data_texcoordlightmap2f, mesh->max_vertices * sizeof(float[2]));
+               mesh->data_lightmapcolor4f = (float *)Mem_Realloc(mod->mempool, mesh->data_lightmapcolor4f, mesh->max_vertices * sizeof(float[4]));
+               // rebuild the hash table
+               mesh->num_vertexhashsize = 4 * mesh->max_vertices;
+               mesh->num_vertexhashsize &= ~(mesh->num_vertexhashsize - 1); // round down to pow2
+               mesh->data_vertexhash = (int *)Mem_Realloc(mod->mempool, mesh->data_vertexhash, mesh->num_vertexhashsize * sizeof(*mesh->data_vertexhash));
+               memset(mesh->data_vertexhash, -1, mesh->num_vertexhashsize * sizeof(*mesh->data_vertexhash));
+               mask = mod->surfmesh.num_vertexhashsize - 1;
+               // no need to hash the vertices for the entire model, the latest surface will suffice.
+               for (vnum = surf ? surf->num_firstvertex : 0; vnum < mesh->num_vertices; vnum++)
+               {
+                       // this uses prime numbers intentionally for computing the hash
+                       hashindex = (unsigned int)(mesh->data_vertex3f[vnum * 3 + 0] * 2003 + mesh->data_vertex3f[vnum * 3 + 1] * 4001 + mesh->data_vertex3f[vnum * 3 + 2] * 7919 + mesh->data_normal3f[vnum * 3 + 0] * 4097 + mesh->data_normal3f[vnum * 3 + 1] * 257 + mesh->data_normal3f[vnum * 3 + 2] * 17) & mask;
+                       for (h = hashindex; mesh->data_vertexhash[h] >= 0; h = (h + 1) & mask)
+                               ; // just iterate until we find the terminator
+                       mesh->data_vertexhash[h] = vnum;
+               }
+       }
+       mask = mod->surfmesh.num_vertexhashsize - 1;
+       // this uses prime numbers intentionally for computing the hash
+       hashindex = (unsigned int)(x * 2003 + y * 4001 + z * 7919 + nx * 4097 + ny * 257 + nz * 17) & mask;
+       // when possible find an identical vertex within the same surface and return it
+       for(h = hashindex;(vnum = mesh->data_vertexhash[h]) >= 0;h = (h + 1) & mask)
+       {
+               if (vnum >= surf->num_firstvertex
+                && mesh->data_vertex3f[vnum * 3 + 0] == x && mesh->data_vertex3f[vnum * 3 + 1] == y && mesh->data_vertex3f[vnum * 3 + 2] == z
+                && mesh->data_normal3f[vnum * 3 + 0] == nx && mesh->data_normal3f[vnum * 3 + 1] == ny && mesh->data_normal3f[vnum * 3 + 2] == nz
+                && mesh->data_texcoordtexture2f[vnum * 2 + 0] == s && mesh->data_texcoordtexture2f[vnum * 2 + 1] == t
+                && mesh->data_texcoordlightmap2f[vnum * 2 + 0] == u && mesh->data_texcoordlightmap2f[vnum * 2 + 1] == v
+                && mesh->data_lightmapcolor4f[vnum * 4 + 0] == r && mesh->data_lightmapcolor4f[vnum * 4 + 1] == g && mesh->data_lightmapcolor4f[vnum * 4 + 2] == b && mesh->data_lightmapcolor4f[vnum * 4 + 3] == a)
+                       return vnum;
+       }
+       // add the new vertex
+       vnum = mesh->num_vertices++;
+       if (surf->num_vertices > 0)
+       {
+               if (surf->mins[0] > x) surf->mins[0] = x;
+               if (surf->mins[1] > y) surf->mins[1] = y;
+               if (surf->mins[2] > z) surf->mins[2] = z;
+               if (surf->maxs[0] < x) surf->maxs[0] = x;
+               if (surf->maxs[1] < y) surf->maxs[1] = y;
+               if (surf->maxs[2] < z) surf->maxs[2] = z;
+       }
+       else
+       {
+               VectorSet(surf->mins, x, y, z);
+               VectorSet(surf->maxs, x, y, z);
+       }
+       surf->num_vertices = mesh->num_vertices - surf->num_firstvertex;
+       mesh->data_vertexhash[h] = vnum;
+       mesh->data_vertex3f[vnum * 3 + 0] = x;
+       mesh->data_vertex3f[vnum * 3 + 1] = y;
+       mesh->data_vertex3f[vnum * 3 + 2] = z;
+       mesh->data_normal3f[vnum * 3 + 0] = nx;
+       mesh->data_normal3f[vnum * 3 + 1] = ny;
+       mesh->data_normal3f[vnum * 3 + 2] = nz;
+       mesh->data_texcoordtexture2f[vnum * 2 + 0] = s;
+       mesh->data_texcoordtexture2f[vnum * 2 + 1] = t;
+       mesh->data_texcoordlightmap2f[vnum * 2 + 0] = u;
+       mesh->data_texcoordlightmap2f[vnum * 2 + 1] = v;
+       mesh->data_lightmapcolor4f[vnum * 4 + 0] = r;
+       mesh->data_lightmapcolor4f[vnum * 4 + 1] = g;
+       mesh->data_lightmapcolor4f[vnum * 4 + 2] = b;
+       mesh->data_lightmapcolor4f[vnum * 4 + 3] = a;
+       return vnum;
+}
+
+void Mod_Mesh_AddTriangle(dp_model_t *mod, msurface_t *surf, int e0, int e1, int e2)
+{
+       surfmesh_t *mesh = &mod->surfmesh;
+       if (mesh->max_triangles == mesh->num_triangles)
+       {
+               mesh->max_triangles = 2 * max(mesh->num_triangles, 128);
+               mesh->data_element3s = (unsigned short *)Mem_Realloc(mod->mempool, mesh->data_element3s, mesh->max_triangles * sizeof(unsigned short[3]));
+               mesh->data_element3i = (int *)Mem_Realloc(mod->mempool, mesh->data_element3i, mesh->max_triangles * sizeof(int[3]));
+       }
+       mesh->data_element3s[mesh->num_triangles * 3 + 0] = e0;
+       mesh->data_element3s[mesh->num_triangles * 3 + 1] = e1;
+       mesh->data_element3s[mesh->num_triangles * 3 + 2] = e2;
+       mesh->data_element3i[mesh->num_triangles * 3 + 0] = e0;
+       mesh->data_element3i[mesh->num_triangles * 3 + 1] = e1;
+       mesh->data_element3i[mesh->num_triangles * 3 + 2] = e2;
+       mesh->num_triangles++;
+       surf->num_triangles++;
+}
+
+static void Mod_Mesh_MakeSortedSurfaces(dp_model_t *mod)
+{
+       int i, j;
+       texture_t *tex;
+       msurface_t *surf, *surf2;
+
+       // build the sorted surfaces list properly to reduce material setup
+       // this is easy because we're just sorting on texture and don't care about the order of textures
+       mod->nummodelsurfaces = 0;
+       for (i = 0; i < mod->num_surfaces; i++)
+               mod->data_surfaces[i].included = false;
+       for (i = 0; i < mod->num_surfaces; i++)
+       {
+               surf = mod->data_surfaces + i;
+               if (surf->included)
+                       continue;
+               tex = surf->texture;
+               // j = i is intentional
+               for (j = i; j < mod->num_surfaces; j++)
+               {
+                       surf2 = mod->data_surfaces + j;
+                       if (surf2->included)
+                               continue;
+                       if (surf2->texture == tex)
+                       {
+                               surf2->included = true;
+                               mod->sortedmodelsurfaces[mod->nummodelsurfaces++] = j;
+                       }
+               }
+       }
+}
+
+void Mod_Mesh_ComputeBounds(dp_model_t *mod)
+{
+       int i;
+       vec_t x2a, x2b, y2a, y2b, z2a, z2b, x2, y2, z2, yawradius, rotatedradius;
+
+       if (mod->surfmesh.num_vertices > 0)
+       {
+               // calculate normalmins/normalmaxs
+               VectorCopy(mod->surfmesh.data_vertex3f, mod->normalmins);
+               VectorCopy(mod->surfmesh.data_vertex3f, mod->normalmaxs);
+               for (i = 1; i < mod->surfmesh.num_vertices; i++)
+               {
+                       float x = mod->surfmesh.data_vertex3f[i * 3 + 0];
+                       float y = mod->surfmesh.data_vertex3f[i * 3 + 1];
+                       float z = mod->surfmesh.data_vertex3f[i * 3 + 2];
+                       // expand bounds to include this vertex
+                       if (mod->normalmins[0] > x) mod->normalmins[0] = x;
+                       if (mod->normalmins[1] > y) mod->normalmins[1] = y;
+                       if (mod->normalmins[2] > z) mod->normalmins[2] = z;
+                       if (mod->normalmaxs[0] < x) mod->normalmaxs[0] = x;
+                       if (mod->normalmaxs[1] < y) mod->normalmaxs[1] = y;
+                       if (mod->normalmaxs[2] < z) mod->normalmaxs[2] = z;
+               }
+               // calculate yawmins/yawmaxs, rotatedmins/maxs from normalmins/maxs
+               // (fast but less accurate than doing it per vertex)
+               x2a = mod->normalmins[0] * mod->normalmins[0];
+               x2b = mod->normalmaxs[0] * mod->normalmaxs[0];
+               y2a = mod->normalmins[1] * mod->normalmins[1];
+               y2b = mod->normalmaxs[1] * mod->normalmaxs[1];
+               z2a = mod->normalmins[2] * mod->normalmins[2];
+               z2b = mod->normalmaxs[2] * mod->normalmaxs[2];
+               x2 = max(x2a, x2b);
+               y2 = max(y2a, y2b);
+               z2 = max(z2a, z2b);
+               yawradius = sqrt(x2 + y2);
+               rotatedradius = sqrt(x2 + y2 + z2);
+               VectorSet(mod->yawmins, -yawradius, -yawradius, mod->normalmins[2]);
+               VectorSet(mod->yawmaxs, yawradius, yawradius, mod->normalmaxs[2]);
+               VectorSet(mod->rotatedmins, -rotatedradius, -rotatedradius, -rotatedradius);
+               VectorSet(mod->rotatedmaxs, rotatedradius, rotatedradius, rotatedradius);
+               mod->radius = rotatedradius;
+               mod->radius2 = x2 + y2 + z2;
+       }
+       else
+       {
+               VectorClear(mod->normalmins);
+               VectorClear(mod->normalmaxs);
+               VectorClear(mod->yawmins);
+               VectorClear(mod->yawmaxs);
+               VectorClear(mod->rotatedmins);
+               VectorClear(mod->rotatedmaxs);
+               mod->radius = 0;
+               mod->radius2 = 0;
+       }
+}
+
+void Mod_Mesh_Finalize(dp_model_t *mod)
+{
+       Mod_Mesh_ComputeBounds(mod);
+       Mod_Mesh_MakeSortedSurfaces(mod);
+       Mod_BuildTextureVectorsFromNormals(0, mod->surfmesh.num_vertices, mod->surfmesh.num_triangles, mod->surfmesh.data_vertex3f, mod->surfmesh.data_texcoordtexture2f, mod->surfmesh.data_normal3f, mod->surfmesh.data_element3i, mod->surfmesh.data_svector3f, mod->surfmesh.data_tvector3f, true);
+}