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 "wieldmesh.h"
  21 #include "settings.h"
  22 #include "shader.h"
  23 #include "inventory.h"
  24 #include "client.h"
  25 #include "itemdef.h"
  26 #include "nodedef.h"
  27 #include "mesh.h"
  28 #include "content_mapblock.h"
  29 #include "mapblock_mesh.h"
  30 #include "client/tile.h"
  31 #include "log.h"
  32 #include "util/numeric.h"
  33 #include <map>
  34 #include <IMeshManipulator.h>
  35
  36 #define WIELD_SCALE_FACTOR 30.0
  37 #define WIELD_SCALE_FACTOR_EXTRUDED 40.0
  38
  39 #define MIN_EXTRUSION_MESH_RESOLUTION 16
  40 #define MAX_EXTRUSION_MESH_RESOLUTION 512
  41
  42 static scene::IMesh *createExtrusionMesh(int resolution_x, int resolution_y)
  43 {
  44         const f32 r = 0.5;
  45
  46         scene::IMeshBuffer *buf = new scene::SMeshBuffer();
  47         video::SColor c(255,255,255,255);
  48         v3f scale(1.0, 1.0, 0.1);
  49
  50         // Front and back
  51         {
  52                 video::S3DVertex vertices[8] = {
  53                         // z-
  54                         video::S3DVertex(-r,+r,-r, 0,0,-1, c, 0,0),
  55                         video::S3DVertex(+r,+r,-r, 0,0,-1, c, 1,0),
  56                         video::S3DVertex(+r,-r,-r, 0,0,-1, c, 1,1),
  57                         video::S3DVertex(-r,-r,-r, 0,0,-1, c, 0,1),
  58                         // z+
  59                         video::S3DVertex(-r,+r,+r, 0,0,+1, c, 0,0),
  60                         video::S3DVertex(-r,-r,+r, 0,0,+1, c, 0,1),
  61                         video::S3DVertex(+r,-r,+r, 0,0,+1, c, 1,1),
  62                         video::S3DVertex(+r,+r,+r, 0,0,+1, c, 1,0),
  63                 };
  64                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
  65                 buf->append(vertices, 8, indices, 12);
  66         }
  67
  68         f32 pixelsize_x = 1 / (f32) resolution_x;
  69         f32 pixelsize_y = 1 / (f32) resolution_y;
  70
  71         for (int i = 0; i < resolution_x; ++i) {
  72                 f32 pixelpos_x = i * pixelsize_x - 0.5;
  73                 f32 x0 = pixelpos_x;
  74                 f32 x1 = pixelpos_x + pixelsize_x;
  75                 f32 tex0 = (i + 0.1) * pixelsize_x;
  76                 f32 tex1 = (i + 0.9) * pixelsize_x;
  77                 video::S3DVertex vertices[8] = {
  78                         // x-
  79                         video::S3DVertex(x0,-r,-r, -1,0,0, c, tex0,1),
  80                         video::S3DVertex(x0,-r,+r, -1,0,0, c, tex1,1),
  81                         video::S3DVertex(x0,+r,+r, -1,0,0, c, tex1,0),
  82                         video::S3DVertex(x0,+r,-r, -1,0,0, c, tex0,0),
  83                         // x+
  84                         video::S3DVertex(x1,-r,-r, +1,0,0, c, tex0,1),
  85                         video::S3DVertex(x1,+r,-r, +1,0,0, c, tex0,0),
  86                         video::S3DVertex(x1,+r,+r, +1,0,0, c, tex1,0),
  87                         video::S3DVertex(x1,-r,+r, +1,0,0, c, tex1,1),
  88                 };
  89                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
  90                 buf->append(vertices, 8, indices, 12);
  91         }
  92         for (int i = 0; i < resolution_y; ++i) {
  93                 f32 pixelpos_y = i * pixelsize_y - 0.5;
  94                 f32 y0 = -pixelpos_y - pixelsize_y;
  95                 f32 y1 = -pixelpos_y;
  96                 f32 tex0 = (i + 0.1) * pixelsize_y;
  97                 f32 tex1 = (i + 0.9) * pixelsize_y;
  98                 video::S3DVertex vertices[8] = {
  99                         // y-
 100                         video::S3DVertex(-r,y0,-r, 0,-1,0, c, 0,tex0),
 101                         video::S3DVertex(+r,y0,-r, 0,-1,0, c, 1,tex0),
 102                         video::S3DVertex(+r,y0,+r, 0,-1,0, c, 1,tex1),
 103                         video::S3DVertex(-r,y0,+r, 0,-1,0, c, 0,tex1),
 104                         // y+
 105                         video::S3DVertex(-r,y1,-r, 0,+1,0, c, 0,tex0),
 106                         video::S3DVertex(-r,y1,+r, 0,+1,0, c, 0,tex1),
 107                         video::S3DVertex(+r,y1,+r, 0,+1,0, c, 1,tex1),
 108                         video::S3DVertex(+r,y1,-r, 0,+1,0, c, 1,tex0),
 109                 };
 110                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
 111                 buf->append(vertices, 8, indices, 12);
 112         }
 113
 114         // Create mesh object
 115         scene::SMesh *mesh = new scene::SMesh();
 116         mesh->addMeshBuffer(buf);
 117         buf->drop();
 118         scaleMesh(mesh, scale);  // also recalculates bounding box
 119         return mesh;
 120 }
 121
 122 /*
 123         Caches extrusion meshes so that only one of them per resolution
 124         is needed. Also caches one cube (for convenience).
 125
 126         E.g. there is a single extrusion mesh that is used for all
 127         16x16 px images, another for all 256x256 px images, and so on.
 128
 129         WARNING: Not thread safe. This should not be a problem since
 130         rendering related classes (such as WieldMeshSceneNode) will be
 131         used from the rendering thread only.
 132 */
 133 class ExtrusionMeshCache: public IReferenceCounted
 134 {
 135 public:
 136         // Constructor
 137         ExtrusionMeshCache()
 138         {
 139                 for (int resolution = MIN_EXTRUSION_MESH_RESOLUTION;
 140                                 resolution <= MAX_EXTRUSION_MESH_RESOLUTION;
 141                                 resolution *= 2) {
 142                         m_extrusion_meshes[resolution] =
 143                                 createExtrusionMesh(resolution, resolution);
 144                 }
 145                 m_cube = createCubeMesh(v3f(1.0, 1.0, 1.0));
 146         }
 147         // Destructor
 148         virtual ~ExtrusionMeshCache()
 149         {
 150                 for (auto &extrusion_meshe : m_extrusion_meshes) {
 151                         extrusion_meshe.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(scene::ISceneManager *mgr, s32 id, bool lighting):
 196         scene::ISceneNode(mgr->getRootSceneNode(), mgr, id),
 197         m_material_type(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF),
 198         m_lighting(lighting)
 199 {
 200         m_enable_shaders = g_settings->getBool("enable_shaders");
 201         m_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 202         m_bilinear_filter = g_settings->getBool("bilinear_filter");
 203         m_trilinear_filter = g_settings->getBool("trilinear_filter");
 204
 205         // If this is the first wield mesh scene node, create a cache
 206         // for extrusion meshes (and a cube mesh), otherwise reuse it
 207         if (!g_extrusion_mesh_cache)
 208                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 209         else
 210                 g_extrusion_mesh_cache->grab();
 211
 212         // Disable bounding box culling for this scene node
 213         // since we won't calculate the bounding box.
 214         setAutomaticCulling(scene::EAC_OFF);
 215
 216         // Create the child scene node
 217         scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 218         m_meshnode = SceneManager->addMeshSceneNode(dummymesh, this, -1);
 219         m_meshnode->setReadOnlyMaterials(false);
 220         m_meshnode->setVisible(false);
 221         dummymesh->drop(); // m_meshnode grabbed it
 222 }
 223
 224 WieldMeshSceneNode::~WieldMeshSceneNode()
 225 {
 226         sanity_check(g_extrusion_mesh_cache);
 227         if (g_extrusion_mesh_cache->drop())
 228                 g_extrusion_mesh_cache = nullptr;
 229 }
 230
 231 void WieldMeshSceneNode::setCube(const ContentFeatures &f,
 232                         v3f wield_scale)
 233 {
 234         scene::IMesh *cubemesh = g_extrusion_mesh_cache->createCube();
 235         scene::SMesh *copy = cloneMesh(cubemesh);
 236         cubemesh->drop();
 237         postProcessNodeMesh(copy, f, false, true, &m_material_type, &m_colors, true);
 238         changeToMesh(copy);
 239         copy->drop();
 240         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR);
 241 }
 242
 243 void WieldMeshSceneNode::setExtruded(const std::string &imagename,
 244         const std::string &overlay_name, v3f wield_scale, ITextureSource *tsrc,
 245         u8 num_frames)
 246 {
 247         video::ITexture *texture = tsrc->getTexture(imagename);
 248         if (!texture) {
 249                 changeToMesh(nullptr);
 250                 return;
 251         }
 252         video::ITexture *overlay_texture =
 253                 overlay_name.empty() ? NULL : tsrc->getTexture(overlay_name);
 254
 255         core::dimension2d<u32> dim = texture->getSize();
 256         // Detect animation texture and pull off top frame instead of using entire thing
 257         if (num_frames > 1) {
 258                 u32 frame_height = dim.Height / num_frames;
 259                 dim = core::dimension2d<u32>(dim.Width, frame_height);
 260         }
 261         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 262         scene::SMesh *mesh = cloneMesh(original);
 263         original->drop();
 264         //set texture
 265         mesh->getMeshBuffer(0)->getMaterial().setTexture(0,
 266                 tsrc->getTexture(imagename));
 267         if (overlay_texture) {
 268                 scene::IMeshBuffer *copy = cloneMeshBuffer(mesh->getMeshBuffer(0));
 269                 copy->getMaterial().setTexture(0, overlay_texture);
 270                 mesh->addMeshBuffer(copy);
 271                 copy->drop();
 272         }
 273         changeToMesh(mesh);
 274         mesh->drop();
 275
 276         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR_EXTRUDED);
 277
 278         // Customize materials
 279         for (u32 layer = 0; layer < m_meshnode->getMaterialCount(); layer++) {
 280                 video::SMaterial &material = m_meshnode->getMaterial(layer);
 281                 material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 282                 material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 283                 material.MaterialType = m_material_type;
 284                 material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 285                 // Enable bi/trilinear filtering only for high resolution textures
 286                 if (dim.Width > 32) {
 287                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 288                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 289                 } else {
 290                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 291                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 292                 }
 293                 material.setFlag(video::EMF_ANISOTROPIC_FILTER, m_anisotropic_filter);
 294                 // mipmaps cause "thin black line" artifacts
 295 #if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
 296                 material.setFlag(video::EMF_USE_MIP_MAPS, false);
 297 #endif
 298                 if (m_enable_shaders) {
 299                         material.setTexture(2, tsrc->getShaderFlagsTexture(false));
 300                 }
 301         }
 302 }
 303
 304 scene::SMesh *createSpecialNodeMesh(Client *client, content_t id, std::vector<ItemPartColor> *colors)
 305 {
 306         MeshMakeData mesh_make_data(client, false, false);
 307         MeshCollector collector(false);
 308         mesh_make_data.setSmoothLighting(false);
 309         MapblockMeshGenerator gen(&mesh_make_data, &collector);
 310         gen.renderSingle(id);
 311         colors->clear();
 312         scene::SMesh *mesh = new scene::SMesh();
 313         for (auto &prebuffers : collector.prebuffers)
 314                 for (PreMeshBuffer &p : prebuffers) {
 315                         if (p.layer.material_flags & MATERIAL_FLAG_ANIMATION) {
 316                                 const FrameSpec &frame = (*p.layer.frames)[0];
 317                                 p.layer.texture = frame.texture;
 318                                 p.layer.normal_texture = frame.normal_texture;
 319                         }
 320                         for (video::S3DVertex &v : p.vertices)
 321                                 v.Color.setAlpha(255);
 322                         scene::SMeshBuffer *buf = new scene::SMeshBuffer();
 323                         buf->Material.setTexture(0, p.layer.texture);
 324                         p.layer.applyMaterialOptions(buf->Material);
 325                         mesh->addMeshBuffer(buf);
 326                         buf->append(&p.vertices[0], p.vertices.size(),
 327                                         &p.indices[0], p.indices.size());
 328                         buf->drop();
 329                         colors->push_back(
 330                                 ItemPartColor(p.layer.has_color, p.layer.color));
 331                 }
 332         return mesh;
 333 }
 334
 335 void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
 336 {
 337         ITextureSource *tsrc = client->getTextureSource();
 338         IItemDefManager *idef = client->getItemDefManager();
 339         IShaderSource *shdrsrc = client->getShaderSource();
 340         const NodeDefManager *ndef = client->getNodeDefManager();
 341         const ItemDefinition &def = item.getDefinition(idef);
 342         const ContentFeatures &f = ndef->get(def.name);
 343         content_t id = ndef->getId(def.name);
 344
 345         scene::SMesh *mesh = nullptr;
 346
 347         if (m_enable_shaders) {
 348                 u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
 349                 m_material_type = shdrsrc->getShaderInfo(shader_id).material;
 350         }
 351
 352         // Color-related
 353         m_colors.clear();
 354         m_base_color = idef->getItemstackColor(item, client);
 355
 356         // If wield_image is defined, it overrides everything else
 357         if (!def.wield_image.empty()) {
 358                 setExtruded(def.wield_image, def.wield_overlay, def.wield_scale, tsrc,
 359                         1);
 360                 m_colors.emplace_back();
 361                 // overlay is white, if present
 362                 m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
 363                 return;
 364         }
 365
 366         // Handle nodes
 367         // See also CItemDefManager::createClientCached()
 368         if (def.type == ITEM_NODE) {
 369                 if (f.mesh_ptr[0]) {
 370                         // e.g. mesh nodes and nodeboxes
 371                         mesh = cloneMesh(f.mesh_ptr[0]);
 372                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 373                                 &m_material_type, &m_colors);
 374                         changeToMesh(mesh);
 375                         mesh->drop();
 376                         // mesh is pre-scaled by BS * f->visual_scale
 377                         m_meshnode->setScale(
 378                                         def.wield_scale * WIELD_SCALE_FACTOR
 379                                         / (BS * f.visual_scale));
 380                 } else {
 381                         switch (f.drawtype) {
 382                                 case NDT_AIRLIKE: {
 383                                         changeToMesh(nullptr);
 384                                         break;
 385                                 }
 386                                 case NDT_PLANTLIKE: {
 387                                         setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 388                                                 tsrc->getTextureName(f.tiles[0].layers[1].texture_id),
 389                                                 def.wield_scale, tsrc,
 390                                                 f.tiles[0].layers[0].animation_frame_count);
 391                                         // Add color
 392                                         const TileLayer &l0 = f.tiles[0].layers[0];
 393                                         m_colors.emplace_back(l0.has_color, l0.color);
 394                                         const TileLayer &l1 = f.tiles[0].layers[1];
 395                                         m_colors.emplace_back(l1.has_color, l1.color);
 396                                         break;
 397                                 }
 398                                 case NDT_PLANTLIKE_ROOTED: {
 399                                         setExtruded(tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id),
 400                                                 "", def.wield_scale, tsrc,
 401                                                 f.special_tiles[0].layers[0].animation_frame_count);
 402                                         // Add color
 403                                         const TileLayer &l0 = f.special_tiles[0].layers[0];
 404                                         m_colors.emplace_back(l0.has_color, l0.color);
 405                                         break;
 406                                 }
 407                                 case NDT_NORMAL:
 408                                 case NDT_ALLFACES:
 409                                 case NDT_LIQUID:
 410                                 case NDT_FLOWINGLIQUID: {
 411                                         setCube(f, def.wield_scale);
 412                                         break;
 413                                 }
 414                                 default: {
 415                                         mesh = createSpecialNodeMesh(client, id, &m_colors);
 416                                         changeToMesh(mesh);
 417                                         mesh->drop();
 418                                         m_meshnode->setScale(
 419                                                         def.wield_scale * WIELD_SCALE_FACTOR
 420                                                         / (BS * f.visual_scale));
 421                                 }
 422                         }
 423                 }
 424                 u32 material_count = m_meshnode->getMaterialCount();
 425                 for (u32 i = 0; i < material_count; ++i) {
 426                         video::SMaterial &material = m_meshnode->getMaterial(i);
 427                         material.MaterialType = m_material_type;
 428                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 429                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 430                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 431                 }
 432                 return;
 433         }
 434         else if (!def.inventory_image.empty()) {
 435                 setExtruded(def.inventory_image, def.inventory_overlay, def.wield_scale,
 436                         tsrc, 1);
 437                 m_colors.emplace_back();
 438                 // overlay is white, if present
 439                 m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
 440                 return;
 441         }
 442
 443         // no wield mesh found
 444         changeToMesh(nullptr);
 445 }
 446
 447 void WieldMeshSceneNode::setColor(video::SColor c)
 448 {
 449         assert(!m_lighting);
 450         scene::IMesh *mesh = m_meshnode->getMesh();
 451         if (!mesh)
 452                 return;
 453
 454         u8 red = c.getRed();
 455         u8 green = c.getGreen();
 456         u8 blue = c.getBlue();
 457         u32 mc = mesh->getMeshBufferCount();
 458         for (u32 j = 0; j < mc; j++) {
 459                 video::SColor bc(m_base_color);
 460                 if ((m_colors.size() > j) && (m_colors[j].override_base))
 461                         bc = m_colors[j].color;
 462                 video::SColor buffercolor(255,
 463                         bc.getRed() * red / 255,
 464                         bc.getGreen() * green / 255,
 465                         bc.getBlue() * blue / 255);
 466                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
 467                 colorizeMeshBuffer(buf, &buffercolor);
 468         }
 469 }
 470
 471 void WieldMeshSceneNode::render()
 472 {
 473         // note: if this method is changed to actually do something,
 474         // you probably should implement OnRegisterSceneNode as well
 475 }
 476
 477 void WieldMeshSceneNode::changeToMesh(scene::IMesh *mesh)
 478 {
 479         if (!mesh) {
 480                 scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 481                 m_meshnode->setVisible(false);
 482                 m_meshnode->setMesh(dummymesh);
 483                 dummymesh->drop();  // m_meshnode grabbed it
 484         } else {
 485                 m_meshnode->setMesh(mesh);
 486         }
 487
 488         m_meshnode->setMaterialFlag(video::EMF_LIGHTING, m_lighting);
 489         // need to normalize normals when lighting is enabled (because of setScale())
 490         m_meshnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, m_lighting);
 491         m_meshnode->setVisible(true);
 492 }
 493
 494 void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
 495 {
 496         ITextureSource *tsrc = client->getTextureSource();
 497         IItemDefManager *idef = client->getItemDefManager();
 498         const NodeDefManager *ndef = client->getNodeDefManager();
 499         const ItemDefinition &def = item.getDefinition(idef);
 500         const ContentFeatures &f = ndef->get(def.name);
 501         content_t id = ndef->getId(def.name);
 502
 503         if (!g_extrusion_mesh_cache) {
 504                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 505         } else {
 506                 g_extrusion_mesh_cache->grab();
 507         }
 508
 509         scene::SMesh *mesh = nullptr;
 510
 511         // Shading is on by default
 512         result->needs_shading = true;
 513
 514         // If inventory_image is defined, it overrides everything else
 515         if (!def.inventory_image.empty()) {
 516                 mesh = getExtrudedMesh(tsrc, def.inventory_image,
 517                         def.inventory_overlay);
 518                 result->buffer_colors.emplace_back();
 519                 // overlay is white, if present
 520                 result->buffer_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
 521                 // Items with inventory images do not need shading
 522                 result->needs_shading = false;
 523         } else if (def.type == ITEM_NODE) {
 524                 if (f.mesh_ptr[0]) {
 525                         mesh = cloneMesh(f.mesh_ptr[0]);
 526                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 527                         postProcessNodeMesh(mesh, f, false, false, nullptr,
 528                                 &result->buffer_colors);
 529                 } else {
 530                         switch (f.drawtype) {
 531                                 case NDT_PLANTLIKE: {
 532                                         mesh = getExtrudedMesh(tsrc,
 533                                                 tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 534                                                 tsrc->getTextureName(f.tiles[0].layers[1].texture_id));
 535                                         // Add color
 536                                         const TileLayer &l0 = f.tiles[0].layers[0];
 537                                         result->buffer_colors.emplace_back(l0.has_color, l0.color);
 538                                         const TileLayer &l1 = f.tiles[0].layers[1];
 539                                         result->buffer_colors.emplace_back(l1.has_color, l1.color);
 540                                         break;
 541                                 }
 542                                 case NDT_PLANTLIKE_ROOTED: {
 543                                         mesh = getExtrudedMesh(tsrc,
 544                                                 tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id), "");
 545                                         // Add color
 546                                         const TileLayer &l0 = f.special_tiles[0].layers[0];
 547                                         result->buffer_colors.emplace_back(l0.has_color, l0.color);
 548                                         break;
 549                                 }
 550                                 case NDT_NORMAL:
 551                                 case NDT_ALLFACES:
 552                                 case NDT_LIQUID:
 553                                 case NDT_FLOWINGLIQUID: {
 554                                         scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
 555                                         mesh = cloneMesh(cube);
 556                                         cube->drop();
 557                                         scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
 558                                         // add overlays
 559                                         postProcessNodeMesh(mesh, f, false, false, nullptr,
 560                                                 &result->buffer_colors);
 561                                         break;
 562                                 }
 563                                 default: {
 564                                         mesh = createSpecialNodeMesh(client, id, &result->buffer_colors);
 565                                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 566                                 }
 567                         }
 568                 }
 569
 570                 u32 mc = mesh->getMeshBufferCount();
 571                 for (u32 i = 0; i < mc; ++i) {
 572                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 573                         video::SMaterial &material = buf->getMaterial();
 574                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 575                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 576                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 577                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 578                         material.setFlag(video::EMF_LIGHTING, false);
 579                 }
 580
 581                 rotateMeshXZby(mesh, -45);
 582                 rotateMeshYZby(mesh, -30);
 583         }
 584         result->mesh = mesh;
 585 }
 586
 587
 588
 589 scene::SMesh *getExtrudedMesh(ITextureSource *tsrc,
 590         const std::string &imagename, const std::string &overlay_name)
 591 {
 592         // check textures
 593         video::ITexture *texture = tsrc->getTextureForMesh(imagename);
 594         if (!texture) {
 595                 return NULL;
 596         }
 597         video::ITexture *overlay_texture =
 598                 (overlay_name.empty()) ? NULL : tsrc->getTexture(overlay_name);
 599
 600         // get mesh
 601         core::dimension2d<u32> dim = texture->getSize();
 602         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 603         scene::SMesh *mesh = cloneMesh(original);
 604         original->drop();
 605
 606         //set texture
 607         mesh->getMeshBuffer(0)->getMaterial().setTexture(0,
 608                 tsrc->getTexture(imagename));
 609         if (overlay_texture) {
 610                 scene::IMeshBuffer *copy = cloneMeshBuffer(mesh->getMeshBuffer(0));
 611                 copy->getMaterial().setTexture(0, overlay_texture);
 612                 mesh->addMeshBuffer(copy);
 613                 copy->drop();
 614         }
 615         // Customize materials
 616         for (u32 layer = 0; layer < mesh->getMeshBufferCount(); layer++) {
 617                 video::SMaterial &material = mesh->getMeshBuffer(layer)->getMaterial();
 618                 material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 619                 material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 620                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
 621                 material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 622                 material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 623                 material.setFlag(video::EMF_LIGHTING, false);
 624                 material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 625         }
 626         scaleMesh(mesh, v3f(2.0, 2.0, 2.0));
 627
 628         return mesh;
 629 }
 630
 631 void postProcessNodeMesh(scene::SMesh *mesh, const ContentFeatures &f,
 632         bool use_shaders, bool set_material, const video::E_MATERIAL_TYPE *mattype,
 633         std::vector<ItemPartColor> *colors, bool apply_scale)
 634 {
 635         u32 mc = mesh->getMeshBufferCount();
 636         // Allocate colors for existing buffers
 637         colors->clear();
 638         for (u32 i = 0; i < mc; ++i)
 639                 colors->push_back(ItemPartColor());
 640
 641         for (u32 i = 0; i < mc; ++i) {
 642                 const TileSpec *tile = &(f.tiles[i]);
 643                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 644                 for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
 645                         const TileLayer *layer = &tile->layers[layernum];
 646                         if (layer->texture_id == 0)
 647                                 continue;
 648                         if (layernum != 0) {
 649                                 scene::IMeshBuffer *copy = cloneMeshBuffer(buf);
 650                                 copy->getMaterial() = buf->getMaterial();
 651                                 mesh->addMeshBuffer(copy);
 652                                 copy->drop();
 653                                 buf = copy;
 654                                 colors->push_back(
 655                                         ItemPartColor(layer->has_color, layer->color));
 656                         } else {
 657                                 (*colors)[i] = ItemPartColor(layer->has_color, layer->color);
 658                         }
 659                         video::SMaterial &material = buf->getMaterial();
 660                         if (set_material)
 661                                 layer->applyMaterialOptions(material);
 662                         if (mattype) {
 663                                 material.MaterialType = *mattype;
 664                         }
 665                         if (layer->animation_frame_count > 1) {
 666                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 667                                 material.setTexture(0, animation_frame.texture);
 668                         } else {
 669                                 material.setTexture(0, layer->texture);
 670                         }
 671                         if (use_shaders) {
 672                                 if (layer->normal_texture) {
 673                                         if (layer->animation_frame_count > 1) {
 674                                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 675                                                 material.setTexture(1, animation_frame.normal_texture);
 676                                         } else
 677                                                 material.setTexture(1, layer->normal_texture);
 678                                 }
 679                                 material.setTexture(2, layer->flags_texture);
 680                         }
 681                         if (apply_scale && tile->world_aligned) {
 682                                 u32 n = buf->getVertexCount();
 683                                 for (u32 k = 0; k != n; ++k)
 684                                         buf->getTCoords(k) /= layer->scale;
 685                         }
 686                 }
 687         }
 688 }