src/wieldmesh.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2014 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "settings.h"
  21 #include "wieldmesh.h"
  22 #include "inventory.h"
  23 #include "client.h"
  24 #include "itemdef.h"
  25 #include "nodedef.h"
  26 #include "mesh.h"
  27 #include "mapblock_mesh.h"
  28 #include "client/tile.h"
  29 #include "log.h"
  30 #include "util/numeric.h"
  31 #include <map>
  32 #include <IMeshManipulator.h>
  33
  34 #define WIELD_SCALE_FACTOR 30.0
  35 #define WIELD_SCALE_FACTOR_EXTRUDED 40.0
  36
  37 #define MIN_EXTRUSION_MESH_RESOLUTION 16
  38 #define MAX_EXTRUSION_MESH_RESOLUTION 512
  39
  40 static scene::IMesh *createExtrusionMesh(int resolution_x, int resolution_y)
  41 {
  42         const f32 r = 0.5;
  43
  44         scene::IMeshBuffer *buf = new scene::SMeshBuffer();
  45         video::SColor c(255,255,255,255);
  46         v3f scale(1.0, 1.0, 0.1);
  47
  48         // Front and back
  49         {
  50                 video::S3DVertex vertices[8] = {
  51                         // z-
  52                         video::S3DVertex(-r,+r,-r, 0,0,-1, c, 0,0),
  53                         video::S3DVertex(+r,+r,-r, 0,0,-1, c, 1,0),
  54                         video::S3DVertex(+r,-r,-r, 0,0,-1, c, 1,1),
  55                         video::S3DVertex(-r,-r,-r, 0,0,-1, c, 0,1),
  56                         // z+
  57                         video::S3DVertex(-r,+r,+r, 0,0,+1, c, 0,0),
  58                         video::S3DVertex(-r,-r,+r, 0,0,+1, c, 0,1),
  59                         video::S3DVertex(+r,-r,+r, 0,0,+1, c, 1,1),
  60                         video::S3DVertex(+r,+r,+r, 0,0,+1, c, 1,0),
  61                 };
  62                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
  63                 buf->append(vertices, 8, indices, 12);
  64         }
  65
  66         f32 pixelsize_x = 1 / (f32) resolution_x;
  67         f32 pixelsize_y = 1 / (f32) resolution_y;
  68
  69         for (int i = 0; i < resolution_x; ++i) {
  70                 f32 pixelpos_x = i * pixelsize_x - 0.5;
  71                 f32 x0 = pixelpos_x;
  72                 f32 x1 = pixelpos_x + pixelsize_x;
  73                 f32 tex0 = (i + 0.1) * pixelsize_x;
  74                 f32 tex1 = (i + 0.9) * pixelsize_x;
  75                 video::S3DVertex vertices[8] = {
  76                         // x-
  77                         video::S3DVertex(x0,-r,-r, -1,0,0, c, tex0,1),
  78                         video::S3DVertex(x0,-r,+r, -1,0,0, c, tex1,1),
  79                         video::S3DVertex(x0,+r,+r, -1,0,0, c, tex1,0),
  80                         video::S3DVertex(x0,+r,-r, -1,0,0, c, tex0,0),
  81                         // x+
  82                         video::S3DVertex(x1,-r,-r, +1,0,0, c, tex0,1),
  83                         video::S3DVertex(x1,+r,-r, +1,0,0, c, tex0,0),
  84                         video::S3DVertex(x1,+r,+r, +1,0,0, c, tex1,0),
  85                         video::S3DVertex(x1,-r,+r, +1,0,0, c, tex1,1),
  86                 };
  87                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
  88                 buf->append(vertices, 8, indices, 12);
  89         }
  90         for (int i = 0; i < resolution_y; ++i) {
  91                 f32 pixelpos_y = i * pixelsize_y - 0.5;
  92                 f32 y0 = -pixelpos_y - pixelsize_y;
  93                 f32 y1 = -pixelpos_y;
  94                 f32 tex0 = (i + 0.1) * pixelsize_y;
  95                 f32 tex1 = (i + 0.9) * pixelsize_y;
  96                 video::S3DVertex vertices[8] = {
  97                         // y-
  98                         video::S3DVertex(-r,y0,-r, 0,-1,0, c, 0,tex0),
  99                         video::S3DVertex(+r,y0,-r, 0,-1,0, c, 1,tex0),
 100                         video::S3DVertex(+r,y0,+r, 0,-1,0, c, 1,tex1),
 101                         video::S3DVertex(-r,y0,+r, 0,-1,0, c, 0,tex1),
 102                         // y+
 103                         video::S3DVertex(-r,y1,-r, 0,+1,0, c, 0,tex0),
 104                         video::S3DVertex(-r,y1,+r, 0,+1,0, c, 0,tex1),
 105                         video::S3DVertex(+r,y1,+r, 0,+1,0, c, 1,tex1),
 106                         video::S3DVertex(+r,y1,-r, 0,+1,0, c, 1,tex0),
 107                 };
 108                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
 109                 buf->append(vertices, 8, indices, 12);
 110         }
 111
 112         // Create mesh object
 113         scene::SMesh *mesh = new scene::SMesh();
 114         mesh->addMeshBuffer(buf);
 115         buf->drop();
 116         scaleMesh(mesh, scale);  // also recalculates bounding box
 117         return mesh;
 118 }
 119
 120 /*
 121         Caches extrusion meshes so that only one of them per resolution
 122         is needed. Also caches one cube (for convenience).
 123
 124         E.g. there is a single extrusion mesh that is used for all
 125         16x16 px images, another for all 256x256 px images, and so on.
 126
 127         WARNING: Not thread safe. This should not be a problem since
 128         rendering related classes (such as WieldMeshSceneNode) will be
 129         used from the rendering thread only.
 130 */
 131 class ExtrusionMeshCache: public IReferenceCounted
 132 {
 133 public:
 134         // Constructor
 135         ExtrusionMeshCache()
 136         {
 137                 for (int resolution = MIN_EXTRUSION_MESH_RESOLUTION;
 138                                 resolution <= MAX_EXTRUSION_MESH_RESOLUTION;
 139                                 resolution *= 2) {
 140                         m_extrusion_meshes[resolution] =
 141                                 createExtrusionMesh(resolution, resolution);
 142                 }
 143                 m_cube = createCubeMesh(v3f(1.0, 1.0, 1.0));
 144         }
 145         // Destructor
 146         virtual ~ExtrusionMeshCache()
 147         {
 148                 for (std::map<int, scene::IMesh*>::iterator
 149                                 it = m_extrusion_meshes.begin();
 150                                 it != m_extrusion_meshes.end(); ++it) {
 151                         it->second->drop();
 152                 }
 153                 m_cube->drop();
 154         }
 155         // Get closest extrusion mesh for given image dimensions
 156         // Caller must drop the returned pointer
 157         scene::IMesh* create(core::dimension2d<u32> dim)
 158         {
 159                 // handle non-power of two textures inefficiently without cache
 160                 if (!is_power_of_two(dim.Width) || !is_power_of_two(dim.Height)) {
 161                         return createExtrusionMesh(dim.Width, dim.Height);
 162                 }
 163
 164                 int maxdim = MYMAX(dim.Width, dim.Height);
 165
 166                 std::map<int, scene::IMesh*>::iterator
 167                         it = m_extrusion_meshes.lower_bound(maxdim);
 168
 169                 if (it == m_extrusion_meshes.end()) {
 170                         // no viable resolution found; use largest one
 171                         it = m_extrusion_meshes.find(MAX_EXTRUSION_MESH_RESOLUTION);
 172                         sanity_check(it != m_extrusion_meshes.end());
 173                 }
 174
 175                 scene::IMesh *mesh = it->second;
 176                 mesh->grab();
 177                 return mesh;
 178         }
 179         // Returns a 1x1x1 cube mesh with one meshbuffer (material) per face
 180         // Caller must drop the returned pointer
 181         scene::IMesh* createCube()
 182         {
 183                 m_cube->grab();
 184                 return m_cube;
 185         }
 186
 187 private:
 188         std::map<int, scene::IMesh*> m_extrusion_meshes;
 189         scene::IMesh *m_cube;
 190 };
 191
 192 ExtrusionMeshCache *g_extrusion_mesh_cache = NULL;
 193
 194
 195 WieldMeshSceneNode::WieldMeshSceneNode(
 196                 scene::ISceneNode *parent,
 197                 scene::ISceneManager *mgr,
 198                 s32 id,
 199                 bool lighting
 200 ):
 201         scene::ISceneNode(parent, mgr, id),
 202         m_meshnode(NULL),
 203         m_material_type(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF),
 204         m_lighting(lighting),
 205         m_bounding_box(0.0, 0.0, 0.0, 0.0, 0.0, 0.0)
 206 {
 207         m_enable_shaders = g_settings->getBool("enable_shaders");
 208         m_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 209         m_bilinear_filter = g_settings->getBool("bilinear_filter");
 210         m_trilinear_filter = g_settings->getBool("trilinear_filter");
 211
 212         // If this is the first wield mesh scene node, create a cache
 213         // for extrusion meshes (and a cube mesh), otherwise reuse it
 214         if (g_extrusion_mesh_cache == NULL)
 215                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 216         else
 217                 g_extrusion_mesh_cache->grab();
 218
 219         // Disable bounding box culling for this scene node
 220         // since we won't calculate the bounding box.
 221         setAutomaticCulling(scene::EAC_OFF);
 222
 223         // Create the child scene node
 224         scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 225         m_meshnode = SceneManager->addMeshSceneNode(dummymesh, this, -1);
 226         m_meshnode->setReadOnlyMaterials(false);
 227         m_meshnode->setVisible(false);
 228         dummymesh->drop(); // m_meshnode grabbed it
 229 }
 230
 231 WieldMeshSceneNode::~WieldMeshSceneNode()
 232 {
 233         sanity_check(g_extrusion_mesh_cache);
 234         if (g_extrusion_mesh_cache->drop())
 235                 g_extrusion_mesh_cache = NULL;
 236 }
 237
 238 void WieldMeshSceneNode::setCube(const ContentFeatures &f,
 239                         v3f wield_scale, ITextureSource *tsrc)
 240 {
 241         scene::IMesh *cubemesh = g_extrusion_mesh_cache->createCube();
 242         scene::SMesh *copy = cloneMesh(cubemesh);
 243         cubemesh->drop();
 244         postProcessNodeMesh(copy, f, false, true, &m_material_type, &m_colors);
 245         changeToMesh(copy);
 246         copy->drop();
 247         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR);
 248 }
 249
 250 void WieldMeshSceneNode::setExtruded(const std::string &imagename,
 251                 v3f wield_scale, ITextureSource *tsrc, u8 num_frames)
 252 {
 253         video::ITexture *texture = tsrc->getTexture(imagename);
 254         if (!texture) {
 255                 changeToMesh(NULL);
 256                 return;
 257         }
 258
 259         core::dimension2d<u32> dim = texture->getSize();
 260         // Detect animation texture and pull off top frame instead of using entire thing
 261         if (num_frames > 1) {
 262                 u32 frame_height = dim.Height / num_frames;
 263                 dim = core::dimension2d<u32>(dim.Width, frame_height);
 264         }
 265         scene::IMesh *mesh = g_extrusion_mesh_cache->create(dim);
 266         scene::SMesh *copy = cloneMesh(mesh);
 267         mesh->drop();
 268         changeToMesh(copy);
 269         copy->drop();
 270
 271         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR_EXTRUDED);
 272
 273         // Customize material
 274         video::SMaterial &material = m_meshnode->getMaterial(0);
 275         material.setTexture(0, tsrc->getTextureForMesh(imagename));
 276         material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 277         material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 278         material.MaterialType = m_material_type;
 279         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 280         // Enable bi/trilinear filtering only for high resolution textures
 281         if (dim.Width > 32) {
 282                 material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 283                 material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 284         } else {
 285                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
 286                 material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 287         }
 288         material.setFlag(video::EMF_ANISOTROPIC_FILTER, m_anisotropic_filter);
 289         // mipmaps cause "thin black line" artifacts
 290 #if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
 291         material.setFlag(video::EMF_USE_MIP_MAPS, false);
 292 #endif
 293         if (m_enable_shaders) {
 294                 material.setTexture(2, tsrc->getShaderFlagsTexture(false));
 295         }
 296 }
 297
 298 void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
 299 {
 300         ITextureSource *tsrc = client->getTextureSource();
 301         IItemDefManager *idef = client->getItemDefManager();
 302         IShaderSource *shdrsrc = client->getShaderSource();
 303         INodeDefManager *ndef = client->getNodeDefManager();
 304         const ItemDefinition &def = item.getDefinition(idef);
 305         const ContentFeatures &f = ndef->get(def.name);
 306         content_t id = ndef->getId(def.name);
 307
 308         if (m_enable_shaders) {
 309                 u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
 310                 m_material_type = shdrsrc->getShaderInfo(shader_id).material;
 311         }
 312
 313         // Color-related
 314         m_colors.clear();
 315         m_base_color = idef->getItemstackColor(item, client);
 316
 317         // If wield_image is defined, it overrides everything else
 318         if (def.wield_image != "") {
 319                 setExtruded(def.wield_image, def.wield_scale, tsrc, 1);
 320                 m_colors.push_back(ItemPartColor());
 321                 return;
 322         }
 323         // Handle nodes
 324         // See also CItemDefManager::createClientCached()
 325         else if (def.type == ITEM_NODE) {
 326                 if (f.mesh_ptr[0]) {
 327                         // e.g. mesh nodes and nodeboxes
 328                         scene::SMesh *mesh = cloneMesh(f.mesh_ptr[0]);
 329                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 330                                 &m_material_type, &m_colors);
 331                         changeToMesh(mesh);
 332                         mesh->drop();
 333                         // mesh is pre-scaled by BS * f->visual_scale
 334                         m_meshnode->setScale(
 335                                         def.wield_scale * WIELD_SCALE_FACTOR
 336                                         / (BS * f.visual_scale));
 337                 } else if (f.drawtype == NDT_AIRLIKE) {
 338                         changeToMesh(NULL);
 339                 } else if (f.drawtype == NDT_PLANTLIKE) {
 340                         setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 341                                 def.wield_scale, tsrc,
 342                                 f.tiles[0].layers[0].animation_frame_count);
 343                 } else if (f.drawtype == NDT_NORMAL || f.drawtype == NDT_ALLFACES) {
 344                         setCube(f, def.wield_scale, tsrc);
 345                 } else {
 346                         MeshMakeData mesh_make_data(client, false);
 347                         MapNode mesh_make_node(id, 255, 0);
 348                         mesh_make_data.fillSingleNode(&mesh_make_node);
 349                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 350                         scene::SMesh *mesh = cloneMesh(mapblock_mesh.getMesh());
 351                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 352                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 353                                 &m_material_type, &m_colors);
 354                         changeToMesh(mesh);
 355                         mesh->drop();
 356                         m_meshnode->setScale(
 357                                         def.wield_scale * WIELD_SCALE_FACTOR
 358                                         / (BS * f.visual_scale));
 359                 }
 360                 u32 material_count = m_meshnode->getMaterialCount();
 361                 for (u32 i = 0; i < material_count; ++i) {
 362                         video::SMaterial &material = m_meshnode->getMaterial(i);
 363                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 364                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 365                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 366                 }
 367                 return;
 368         }
 369         else if (def.inventory_image != "") {
 370                 setExtruded(def.inventory_image, def.wield_scale, tsrc, 1);
 371                 m_colors.push_back(ItemPartColor());
 372                 return;
 373         }
 374
 375         // no wield mesh found
 376         changeToMesh(NULL);
 377 }
 378
 379 void WieldMeshSceneNode::setColor(video::SColor c)
 380 {
 381         assert(!m_lighting);
 382         scene::IMesh *mesh=m_meshnode->getMesh();
 383         if (mesh == NULL)
 384                 return;
 385
 386         u8 red = c.getRed();
 387         u8 green = c.getGreen();
 388         u8 blue = c.getBlue();
 389         u32 mc = mesh->getMeshBufferCount();
 390         for (u32 j = 0; j < mc; j++) {
 391                 video::SColor bc(m_base_color);
 392                 if ((m_colors.size() > j) && (m_colors[j].override_base))
 393                         bc = m_colors[j].color;
 394                 video::SColor buffercolor(255,
 395                         bc.getRed() * red / 255,
 396                         bc.getGreen() * green / 255,
 397                         bc.getBlue() * blue / 255);
 398                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
 399                 colorizeMeshBuffer(buf, &buffercolor);
 400         }
 401 }
 402
 403 void WieldMeshSceneNode::render()
 404 {
 405         // note: if this method is changed to actually do something,
 406         // you probably should implement OnRegisterSceneNode as well
 407 }
 408
 409 void WieldMeshSceneNode::changeToMesh(scene::IMesh *mesh)
 410 {
 411         if (mesh == NULL) {
 412                 scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 413                 m_meshnode->setVisible(false);
 414                 m_meshnode->setMesh(dummymesh);
 415                 dummymesh->drop();  // m_meshnode grabbed it
 416         } else {
 417                 m_meshnode->setMesh(mesh);
 418         }
 419
 420         m_meshnode->setMaterialFlag(video::EMF_LIGHTING, m_lighting);
 421         // need to normalize normals when lighting is enabled (because of setScale())
 422         m_meshnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, m_lighting);
 423         m_meshnode->setVisible(true);
 424 }
 425
 426 void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
 427 {
 428         ITextureSource *tsrc = client->getTextureSource();
 429         IItemDefManager *idef = client->getItemDefManager();
 430         INodeDefManager *ndef = client->getNodeDefManager();
 431         const ItemDefinition &def = item.getDefinition(idef);
 432         const ContentFeatures &f = ndef->get(def.name);
 433         content_t id = ndef->getId(def.name);
 434
 435         if (!g_extrusion_mesh_cache) {
 436                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 437         } else {
 438                 g_extrusion_mesh_cache->grab();
 439         }
 440
 441         scene::SMesh *mesh = NULL;
 442
 443         // If inventory_image is defined, it overrides everything else
 444         if (def.inventory_image != "") {
 445                 mesh = getExtrudedMesh(tsrc, def.inventory_image);
 446                 result->buffer_colors.push_back(ItemPartColor());
 447         } else if (def.type == ITEM_NODE) {
 448                 if (f.mesh_ptr[0]) {
 449                         mesh = cloneMesh(f.mesh_ptr[0]);
 450                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 451                 } else if (f.drawtype == NDT_PLANTLIKE) {
 452                         mesh = getExtrudedMesh(tsrc,
 453                                 tsrc->getTextureName(f.tiles[0].layers[0].texture_id));
 454                 } else if (f.drawtype == NDT_NORMAL || f.drawtype == NDT_ALLFACES
 455                         || f.drawtype == NDT_LIQUID || f.drawtype == NDT_FLOWINGLIQUID) {
 456                         scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
 457                         mesh = cloneMesh(cube);
 458                         cube->drop();
 459                         scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
 460                 } else {
 461                         MeshMakeData mesh_make_data(client, false);
 462                         MapNode mesh_make_node(id, 255, 0);
 463                         mesh_make_data.fillSingleNode(&mesh_make_node);
 464                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 465                         mesh = cloneMesh(mapblock_mesh.getMesh());
 466                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 467                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 468
 469                         u32 mc = mesh->getMeshBufferCount();
 470                         for (u32 i = 0; i < mc; ++i) {
 471                                 video::SMaterial &material1 =
 472                                         mesh->getMeshBuffer(i)->getMaterial();
 473                                 video::SMaterial &material2 =
 474                                         mapblock_mesh.getMesh()->getMeshBuffer(i)->getMaterial();
 475                                 material1.setTexture(0, material2.getTexture(0));
 476                                 material1.setTexture(1, material2.getTexture(1));
 477                                 material1.setTexture(2, material2.getTexture(2));
 478                                 material1.setTexture(3, material2.getTexture(3));
 479                                 material1.MaterialType = material2.MaterialType;
 480                         }
 481                 }
 482
 483                 u32 mc = mesh->getMeshBufferCount();
 484                 for (u32 i = 0; i < mc; ++i) {
 485                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 486                         video::SMaterial &material = buf->getMaterial();
 487                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 488                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 489                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 490                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 491                         material.setFlag(video::EMF_LIGHTING, false);
 492                 }
 493
 494                 rotateMeshXZby(mesh, -45);
 495                 rotateMeshYZby(mesh, -30);
 496
 497                 postProcessNodeMesh(mesh, f, false, false, NULL,
 498                         &result->buffer_colors);
 499         }
 500         result->mesh = mesh;
 501 }
 502
 503
 504
 505 scene::SMesh * getExtrudedMesh(ITextureSource *tsrc,
 506                 const std::string &imagename)
 507 {
 508         video::ITexture *texture = tsrc->getTextureForMesh(imagename);
 509         if (!texture) {
 510                 return NULL;
 511         }
 512
 513         core::dimension2d<u32> dim = texture->getSize();
 514         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 515         scene::SMesh *mesh = cloneMesh(original);
 516         original->drop();
 517
 518         // Customize material
 519         video::SMaterial &material = mesh->getMeshBuffer(0)->getMaterial();
 520         material.setTexture(0, tsrc->getTexture(imagename));
 521         material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 522         material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 523         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 524         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 525         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 526         material.setFlag(video::EMF_LIGHTING, false);
 527         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 528         scaleMesh(mesh, v3f(2.0, 2.0, 2.0));
 529
 530         return mesh;
 531 }
 532
 533 void postProcessNodeMesh(scene::SMesh *mesh, const ContentFeatures &f,
 534         bool use_shaders, bool set_material, video::E_MATERIAL_TYPE *mattype,
 535         std::vector<ItemPartColor> *colors)
 536 {
 537         u32 mc = mesh->getMeshBufferCount();
 538         // Allocate colors for existing buffers
 539         colors->clear();
 540         for (u32 i = 0; i < mc; ++i)
 541                 colors->push_back(ItemPartColor());
 542
 543         for (u32 i = 0; i < mc; ++i) {
 544                 const TileSpec *tile = &(f.tiles[i]);
 545                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 546                 for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
 547                         const TileLayer *layer = &tile->layers[layernum];
 548                         if (layer->texture_id == 0)
 549                                 continue;
 550                         if (layernum != 0) {
 551                                 scene::IMeshBuffer *copy = cloneMeshBuffer(buf);
 552                                 copy->getMaterial() = buf->getMaterial();
 553                                 mesh->addMeshBuffer(copy);
 554                                 copy->drop();
 555                                 buf = copy;
 556                                 colors->push_back(
 557                                         ItemPartColor(layer->has_color, layer->color));
 558                         } else {
 559                                 (*colors)[i] = ItemPartColor(layer->has_color, layer->color);
 560                         }
 561                         video::SMaterial &material = buf->getMaterial();
 562                         if (set_material)
 563                                 layer->applyMaterialOptions(material);
 564                         if (mattype) {
 565                                 material.MaterialType = *mattype;
 566                         }
 567                         if (layer->animation_frame_count > 1) {
 568                                 FrameSpec animation_frame = layer->frames[0];
 569                                 material.setTexture(0, animation_frame.texture);
 570                         } else {
 571                                 material.setTexture(0, layer->texture);
 572                         }
 573                         if (use_shaders) {
 574                                 if (layer->normal_texture) {
 575                                         if (layer->animation_frame_count > 1) {
 576                                                 FrameSpec animation_frame = layer->frames[0];
 577                                                 material.setTexture(1, animation_frame.normal_texture);
 578                                         } else
 579                                                 material.setTexture(1, layer->normal_texture);
 580                                 }
 581                                 material.setTexture(2, layer->flags_texture);
 582                         }
 583                 }
 584         }
 585 }