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 "mapblock_mesh.h"
  29 #include "client/tile.h"
  30 #include "log.h"
  31 #include "util/numeric.h"
  32 #include <map>
  33 #include <IMeshManipulator.h>
  34
  35 #define WIELD_SCALE_FACTOR 30.0
  36 #define WIELD_SCALE_FACTOR_EXTRUDED 40.0
  37
  38 #define MIN_EXTRUSION_MESH_RESOLUTION 16
  39 #define MAX_EXTRUSION_MESH_RESOLUTION 512
  40
  41 static scene::IMesh *createExtrusionMesh(int resolution_x, int resolution_y)
  42 {
  43         const f32 r = 0.5;
  44
  45         scene::IMeshBuffer *buf = new scene::SMeshBuffer();
  46         video::SColor c(255,255,255,255);
  47         v3f scale(1.0, 1.0, 0.1);
  48
  49         // Front and back
  50         {
  51                 video::S3DVertex vertices[8] = {
  52                         // z-
  53                         video::S3DVertex(-r,+r,-r, 0,0,-1, c, 0,0),
  54                         video::S3DVertex(+r,+r,-r, 0,0,-1, c, 1,0),
  55                         video::S3DVertex(+r,-r,-r, 0,0,-1, c, 1,1),
  56                         video::S3DVertex(-r,-r,-r, 0,0,-1, c, 0,1),
  57                         // z+
  58                         video::S3DVertex(-r,+r,+r, 0,0,+1, c, 0,0),
  59                         video::S3DVertex(-r,-r,+r, 0,0,+1, c, 0,1),
  60                         video::S3DVertex(+r,-r,+r, 0,0,+1, c, 1,1),
  61                         video::S3DVertex(+r,+r,+r, 0,0,+1, c, 1,0),
  62                 };
  63                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
  64                 buf->append(vertices, 8, indices, 12);
  65         }
  66
  67         f32 pixelsize_x = 1 / (f32) resolution_x;
  68         f32 pixelsize_y = 1 / (f32) resolution_y;
  69
  70         for (int i = 0; i < resolution_x; ++i) {
  71                 f32 pixelpos_x = i * pixelsize_x - 0.5;
  72                 f32 x0 = pixelpos_x;
  73                 f32 x1 = pixelpos_x + pixelsize_x;
  74                 f32 tex0 = (i + 0.1) * pixelsize_x;
  75                 f32 tex1 = (i + 0.9) * pixelsize_x;
  76                 video::S3DVertex vertices[8] = {
  77                         // x-
  78                         video::S3DVertex(x0,-r,-r, -1,0,0, c, tex0,1),
  79                         video::S3DVertex(x0,-r,+r, -1,0,0, c, tex1,1),
  80                         video::S3DVertex(x0,+r,+r, -1,0,0, c, tex1,0),
  81                         video::S3DVertex(x0,+r,-r, -1,0,0, c, tex0,0),
  82                         // x+
  83                         video::S3DVertex(x1,-r,-r, +1,0,0, c, tex0,1),
  84                         video::S3DVertex(x1,+r,-r, +1,0,0, c, tex0,0),
  85                         video::S3DVertex(x1,+r,+r, +1,0,0, c, tex1,0),
  86                         video::S3DVertex(x1,-r,+r, +1,0,0, c, tex1,1),
  87                 };
  88                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
  89                 buf->append(vertices, 8, indices, 12);
  90         }
  91         for (int i = 0; i < resolution_y; ++i) {
  92                 f32 pixelpos_y = i * pixelsize_y - 0.5;
  93                 f32 y0 = -pixelpos_y - pixelsize_y;
  94                 f32 y1 = -pixelpos_y;
  95                 f32 tex0 = (i + 0.1) * pixelsize_y;
  96                 f32 tex1 = (i + 0.9) * pixelsize_y;
  97                 video::S3DVertex vertices[8] = {
  98                         // y-
  99                         video::S3DVertex(-r,y0,-r, 0,-1,0, c, 0,tex0),
 100                         video::S3DVertex(+r,y0,-r, 0,-1,0, c, 1,tex0),
 101                         video::S3DVertex(+r,y0,+r, 0,-1,0, c, 1,tex1),
 102                         video::S3DVertex(-r,y0,+r, 0,-1,0, c, 0,tex1),
 103                         // y+
 104                         video::S3DVertex(-r,y1,-r, 0,+1,0, c, 0,tex0),
 105                         video::S3DVertex(-r,y1,+r, 0,+1,0, c, 0,tex1),
 106                         video::S3DVertex(+r,y1,+r, 0,+1,0, c, 1,tex1),
 107                         video::S3DVertex(+r,y1,-r, 0,+1,0, c, 1,tex0),
 108                 };
 109                 u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
 110                 buf->append(vertices, 8, indices, 12);
 111         }
 112
 113         // Create mesh object
 114         scene::SMesh *mesh = new scene::SMesh();
 115         mesh->addMeshBuffer(buf);
 116         buf->drop();
 117         scaleMesh(mesh, scale);  // also recalculates bounding box
 118         return mesh;
 119 }
 120
 121 /*
 122         Caches extrusion meshes so that only one of them per resolution
 123         is needed. Also caches one cube (for convenience).
 124
 125         E.g. there is a single extrusion mesh that is used for all
 126         16x16 px images, another for all 256x256 px images, and so on.
 127
 128         WARNING: Not thread safe. This should not be a problem since
 129         rendering related classes (such as WieldMeshSceneNode) will be
 130         used from the rendering thread only.
 131 */
 132 class ExtrusionMeshCache: public IReferenceCounted
 133 {
 134 public:
 135         // Constructor
 136         ExtrusionMeshCache()
 137         {
 138                 for (int resolution = MIN_EXTRUSION_MESH_RESOLUTION;
 139                                 resolution <= MAX_EXTRUSION_MESH_RESOLUTION;
 140                                 resolution *= 2) {
 141                         m_extrusion_meshes[resolution] =
 142                                 createExtrusionMesh(resolution, resolution);
 143                 }
 144                 m_cube = createCubeMesh(v3f(1.0, 1.0, 1.0));
 145         }
 146         // Destructor
 147         virtual ~ExtrusionMeshCache()
 148         {
 149                 for (auto &extrusion_meshe : m_extrusion_meshes) {
 150                         extrusion_meshe.second->drop();
 151                 }
 152                 m_cube->drop();
 153         }
 154         // Get closest extrusion mesh for given image dimensions
 155         // Caller must drop the returned pointer
 156         scene::IMesh* create(core::dimension2d<u32> dim)
 157         {
 158                 // handle non-power of two textures inefficiently without cache
 159                 if (!is_power_of_two(dim.Width) || !is_power_of_two(dim.Height)) {
 160                         return createExtrusionMesh(dim.Width, dim.Height);
 161                 }
 162
 163                 int maxdim = MYMAX(dim.Width, dim.Height);
 164
 165                 std::map<int, scene::IMesh*>::iterator
 166                         it = m_extrusion_meshes.lower_bound(maxdim);
 167
 168                 if (it == m_extrusion_meshes.end()) {
 169                         // no viable resolution found; use largest one
 170                         it = m_extrusion_meshes.find(MAX_EXTRUSION_MESH_RESOLUTION);
 171                         sanity_check(it != m_extrusion_meshes.end());
 172                 }
 173
 174                 scene::IMesh *mesh = it->second;
 175                 mesh->grab();
 176                 return mesh;
 177         }
 178         // Returns a 1x1x1 cube mesh with one meshbuffer (material) per face
 179         // Caller must drop the returned pointer
 180         scene::IMesh* createCube()
 181         {
 182                 m_cube->grab();
 183                 return m_cube;
 184         }
 185
 186 private:
 187         std::map<int, scene::IMesh*> m_extrusion_meshes;
 188         scene::IMesh *m_cube;
 189 };
 190
 191 ExtrusionMeshCache *g_extrusion_mesh_cache = NULL;
 192
 193
 194 WieldMeshSceneNode::WieldMeshSceneNode(scene::ISceneManager *mgr, s32 id, bool lighting):
 195         scene::ISceneNode(mgr->getRootSceneNode(), mgr, id),
 196         m_material_type(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF),
 197         m_lighting(lighting)
 198 {
 199         m_enable_shaders = g_settings->getBool("enable_shaders");
 200         m_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 201         m_bilinear_filter = g_settings->getBool("bilinear_filter");
 202         m_trilinear_filter = g_settings->getBool("trilinear_filter");
 203
 204         // If this is the first wield mesh scene node, create a cache
 205         // for extrusion meshes (and a cube mesh), otherwise reuse it
 206         if (!g_extrusion_mesh_cache)
 207                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 208         else
 209                 g_extrusion_mesh_cache->grab();
 210
 211         // Disable bounding box culling for this scene node
 212         // since we won't calculate the bounding box.
 213         setAutomaticCulling(scene::EAC_OFF);
 214
 215         // Create the child scene node
 216         scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 217         m_meshnode = SceneManager->addMeshSceneNode(dummymesh, this, -1);
 218         m_meshnode->setReadOnlyMaterials(false);
 219         m_meshnode->setVisible(false);
 220         dummymesh->drop(); // m_meshnode grabbed it
 221 }
 222
 223 WieldMeshSceneNode::~WieldMeshSceneNode()
 224 {
 225         sanity_check(g_extrusion_mesh_cache);
 226         if (g_extrusion_mesh_cache->drop())
 227                 g_extrusion_mesh_cache = nullptr;
 228 }
 229
 230 void WieldMeshSceneNode::setCube(const ContentFeatures &f,
 231                         v3f wield_scale)
 232 {
 233         scene::IMesh *cubemesh = g_extrusion_mesh_cache->createCube();
 234         scene::SMesh *copy = cloneMesh(cubemesh);
 235         cubemesh->drop();
 236         postProcessNodeMesh(copy, f, false, true, &m_material_type, &m_colors);
 237         changeToMesh(copy);
 238         copy->drop();
 239         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR);
 240 }
 241
 242 void WieldMeshSceneNode::setExtruded(const std::string &imagename,
 243                 v3f wield_scale, ITextureSource *tsrc, u8 num_frames)
 244 {
 245         video::ITexture *texture = tsrc->getTexture(imagename);
 246         if (!texture) {
 247                 changeToMesh(nullptr);
 248                 return;
 249         }
 250
 251         core::dimension2d<u32> dim = texture->getSize();
 252         // Detect animation texture and pull off top frame instead of using entire thing
 253         if (num_frames > 1) {
 254                 u32 frame_height = dim.Height / num_frames;
 255                 dim = core::dimension2d<u32>(dim.Width, frame_height);
 256         }
 257         scene::IMesh *mesh = g_extrusion_mesh_cache->create(dim);
 258         scene::SMesh *copy = cloneMesh(mesh);
 259         mesh->drop();
 260         changeToMesh(copy);
 261         copy->drop();
 262
 263         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR_EXTRUDED);
 264
 265         // Customize material
 266         video::SMaterial &material = m_meshnode->getMaterial(0);
 267         material.setTexture(0, tsrc->getTextureForMesh(imagename));
 268         material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 269         material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 270         material.MaterialType = m_material_type;
 271         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 272         // Enable bi/trilinear filtering only for high resolution textures
 273         if (dim.Width > 32) {
 274                 material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 275                 material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 276         } else {
 277                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
 278                 material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 279         }
 280         material.setFlag(video::EMF_ANISOTROPIC_FILTER, m_anisotropic_filter);
 281         // mipmaps cause "thin black line" artifacts
 282 #if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
 283         material.setFlag(video::EMF_USE_MIP_MAPS, false);
 284 #endif
 285         if (m_enable_shaders) {
 286                 material.setTexture(2, tsrc->getShaderFlagsTexture(false));
 287         }
 288 }
 289
 290 void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
 291 {
 292         ITextureSource *tsrc = client->getTextureSource();
 293         IItemDefManager *idef = client->getItemDefManager();
 294         IShaderSource *shdrsrc = client->getShaderSource();
 295         INodeDefManager *ndef = client->getNodeDefManager();
 296         const ItemDefinition &def = item.getDefinition(idef);
 297         const ContentFeatures &f = ndef->get(def.name);
 298         content_t id = ndef->getId(def.name);
 299
 300         if (m_enable_shaders) {
 301                 u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
 302                 m_material_type = shdrsrc->getShaderInfo(shader_id).material;
 303         }
 304
 305         // Color-related
 306         m_colors.clear();
 307         m_base_color = idef->getItemstackColor(item, client);
 308
 309         // If wield_image is defined, it overrides everything else
 310         if (!def.wield_image.empty()) {
 311                 setExtruded(def.wield_image, def.wield_scale, tsrc, 1);
 312                 m_colors.emplace_back();
 313                 return;
 314         }
 315
 316         // Handle nodes
 317         // See also CItemDefManager::createClientCached()
 318         if (def.type == ITEM_NODE) {
 319                 if (f.mesh_ptr[0]) {
 320                         // e.g. mesh nodes and nodeboxes
 321                         scene::SMesh *mesh = cloneMesh(f.mesh_ptr[0]);
 322                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 323                                 &m_material_type, &m_colors);
 324                         changeToMesh(mesh);
 325                         mesh->drop();
 326                         // mesh is pre-scaled by BS * f->visual_scale
 327                         m_meshnode->setScale(
 328                                         def.wield_scale * WIELD_SCALE_FACTOR
 329                                         / (BS * f.visual_scale));
 330                 } else {
 331                         switch (f.drawtype) {
 332                                 case NDT_AIRLIKE: {
 333                                         changeToMesh(nullptr);
 334                                         break;
 335                                 }
 336                                 case NDT_PLANTLIKE: {
 337                                         setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 338                                                 def.wield_scale, tsrc,
 339                                                 f.tiles[0].layers[0].animation_frame_count);
 340                                         break;
 341                                 }
 342                                 case NDT_PLANTLIKE_ROOTED: {
 343                                         setExtruded(tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id),
 344                                                 def.wield_scale, tsrc,
 345                                                 f.special_tiles[0].layers[0].animation_frame_count);
 346                                         break;
 347                                 }
 348                                 case NDT_NORMAL:
 349                                 case NDT_ALLFACES: {
 350                                         setCube(f, def.wield_scale);
 351                                         break;
 352                                 }
 353                                 default: {
 354                                         MeshMakeData mesh_make_data(client, false);
 355                                         MapNode mesh_make_node(id, 255, 0);
 356                                         mesh_make_data.fillSingleNode(&mesh_make_node);
 357                                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 358                                         scene::SMesh *mesh = cloneMesh(mapblock_mesh.getMesh());
 359                                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 360                                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 361                                                 &m_material_type, &m_colors);
 362                                         changeToMesh(mesh);
 363                                         mesh->drop();
 364                                         m_meshnode->setScale(
 365                                                         def.wield_scale * WIELD_SCALE_FACTOR
 366                                                         / (BS * f.visual_scale));
 367                                 }
 368                         }
 369                 }
 370                 u32 material_count = m_meshnode->getMaterialCount();
 371                 for (u32 i = 0; i < material_count; ++i) {
 372                         video::SMaterial &material = m_meshnode->getMaterial(i);
 373                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 374                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 375                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 376                 }
 377                 return;
 378         }
 379         else if (!def.inventory_image.empty()) {
 380                 setExtruded(def.inventory_image, def.wield_scale, tsrc, 1);
 381                 m_colors.emplace_back();
 382                 return;
 383         }
 384
 385         // no wield mesh found
 386         changeToMesh(nullptr);
 387 }
 388
 389 void WieldMeshSceneNode::setColor(video::SColor c)
 390 {
 391         assert(!m_lighting);
 392         scene::IMesh *mesh = m_meshnode->getMesh();
 393         if (!mesh)
 394                 return;
 395
 396         u8 red = c.getRed();
 397         u8 green = c.getGreen();
 398         u8 blue = c.getBlue();
 399         u32 mc = mesh->getMeshBufferCount();
 400         for (u32 j = 0; j < mc; j++) {
 401                 video::SColor bc(m_base_color);
 402                 if ((m_colors.size() > j) && (m_colors[j].override_base))
 403                         bc = m_colors[j].color;
 404                 video::SColor buffercolor(255,
 405                         bc.getRed() * red / 255,
 406                         bc.getGreen() * green / 255,
 407                         bc.getBlue() * blue / 255);
 408                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
 409                 colorizeMeshBuffer(buf, &buffercolor);
 410         }
 411 }
 412
 413 void WieldMeshSceneNode::render()
 414 {
 415         // note: if this method is changed to actually do something,
 416         // you probably should implement OnRegisterSceneNode as well
 417 }
 418
 419 void WieldMeshSceneNode::changeToMesh(scene::IMesh *mesh)
 420 {
 421         if (!mesh) {
 422                 scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 423                 m_meshnode->setVisible(false);
 424                 m_meshnode->setMesh(dummymesh);
 425                 dummymesh->drop();  // m_meshnode grabbed it
 426         } else {
 427                 m_meshnode->setMesh(mesh);
 428         }
 429
 430         m_meshnode->setMaterialFlag(video::EMF_LIGHTING, m_lighting);
 431         // need to normalize normals when lighting is enabled (because of setScale())
 432         m_meshnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, m_lighting);
 433         m_meshnode->setVisible(true);
 434 }
 435
 436 void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
 437 {
 438         ITextureSource *tsrc = client->getTextureSource();
 439         IItemDefManager *idef = client->getItemDefManager();
 440         INodeDefManager *ndef = client->getNodeDefManager();
 441         const ItemDefinition &def = item.getDefinition(idef);
 442         const ContentFeatures &f = ndef->get(def.name);
 443         content_t id = ndef->getId(def.name);
 444
 445         if (!g_extrusion_mesh_cache) {
 446                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 447         } else {
 448                 g_extrusion_mesh_cache->grab();
 449         }
 450
 451         scene::SMesh *mesh = nullptr;
 452
 453         // Shading is on by default
 454         result->needs_shading = true;
 455
 456         // If inventory_image is defined, it overrides everything else
 457         if (!def.inventory_image.empty()) {
 458                 mesh = getExtrudedMesh(tsrc, def.inventory_image);
 459                 result->buffer_colors.emplace_back();
 460                 // Items with inventory images do not need shading
 461                 result->needs_shading = false;
 462         } else if (def.type == ITEM_NODE) {
 463                 if (f.mesh_ptr[0]) {
 464                         mesh = cloneMesh(f.mesh_ptr[0]);
 465                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 466                 } else {
 467                         switch (f.drawtype) {
 468                                 case NDT_PLANTLIKE: {
 469                                         mesh = getExtrudedMesh(tsrc,
 470                                                 tsrc->getTextureName(f.tiles[0].layers[0].texture_id));
 471                                         break;
 472                                 }
 473                                 case NDT_PLANTLIKE_ROOTED: {
 474                                         mesh = getExtrudedMesh(tsrc,
 475                                                 tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id));
 476                                         break;
 477                                 }
 478                                 case NDT_NORMAL:
 479                                 case NDT_ALLFACES:
 480                                 case NDT_LIQUID:
 481                                 case NDT_FLOWINGLIQUID: {
 482                                         scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
 483                                         mesh = cloneMesh(cube);
 484                                         cube->drop();
 485                                         scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
 486                                         break;
 487                                 }
 488                                 default: {
 489                                         MeshMakeData mesh_make_data(client, false);
 490                                         MapNode mesh_make_node(id, 255, 0);
 491                                         mesh_make_data.fillSingleNode(&mesh_make_node);
 492                                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 493                                         mesh = cloneMesh(mapblock_mesh.getMesh());
 494                                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 495                                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 496
 497                                         u32 mc = mesh->getMeshBufferCount();
 498                                         for (u32 i = 0; i < mc; ++i) {
 499                                                 video::SMaterial &material1 =
 500                                                         mesh->getMeshBuffer(i)->getMaterial();
 501                                                 video::SMaterial &material2 =
 502                                                         mapblock_mesh.getMesh()->getMeshBuffer(i)->getMaterial();
 503                                                 material1.setTexture(0, material2.getTexture(0));
 504                                                 material1.setTexture(1, material2.getTexture(1));
 505                                                 material1.setTexture(2, material2.getTexture(2));
 506                                                 material1.setTexture(3, material2.getTexture(3));
 507                                                 material1.MaterialType = material2.MaterialType;
 508                                         }
 509                                 }
 510                         }
 511                 }
 512
 513                 u32 mc = mesh->getMeshBufferCount();
 514                 for (u32 i = 0; i < mc; ++i) {
 515                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 516                         video::SMaterial &material = buf->getMaterial();
 517                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 518                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 519                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 520                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 521                         material.setFlag(video::EMF_LIGHTING, false);
 522                 }
 523
 524                 rotateMeshXZby(mesh, -45);
 525                 rotateMeshYZby(mesh, -30);
 526
 527                 postProcessNodeMesh(mesh, f, false, false, nullptr, &result->buffer_colors);
 528         }
 529         result->mesh = mesh;
 530 }
 531
 532
 533
 534 scene::SMesh *getExtrudedMesh(ITextureSource *tsrc, const std::string &imagename)
 535 {
 536         video::ITexture *texture = tsrc->getTextureForMesh(imagename);
 537         if (!texture) {
 538                 return nullptr;
 539         }
 540
 541         core::dimension2d<u32> dim = texture->getSize();
 542         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 543         scene::SMesh *mesh = cloneMesh(original);
 544         original->drop();
 545
 546         // Customize material
 547         video::SMaterial &material = mesh->getMeshBuffer(0)->getMaterial();
 548         material.setTexture(0, tsrc->getTexture(imagename));
 549         material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 550         material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 551         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 552         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 553         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 554         material.setFlag(video::EMF_LIGHTING, false);
 555         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 556         scaleMesh(mesh, v3f(2.0, 2.0, 2.0));
 557
 558         return mesh;
 559 }
 560
 561 void postProcessNodeMesh(scene::SMesh *mesh, const ContentFeatures &f,
 562         bool use_shaders, bool set_material, const video::E_MATERIAL_TYPE *mattype,
 563         std::vector<ItemPartColor> *colors)
 564 {
 565         u32 mc = mesh->getMeshBufferCount();
 566         // Allocate colors for existing buffers
 567         colors->clear();
 568         for (u32 i = 0; i < mc; ++i)
 569                 colors->push_back(ItemPartColor());
 570
 571         for (u32 i = 0; i < mc; ++i) {
 572                 const TileSpec *tile = &(f.tiles[i]);
 573                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 574                 for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
 575                         const TileLayer *layer = &tile->layers[layernum];
 576                         if (layer->texture_id == 0)
 577                                 continue;
 578                         if (layernum != 0) {
 579                                 scene::IMeshBuffer *copy = cloneMeshBuffer(buf);
 580                                 copy->getMaterial() = buf->getMaterial();
 581                                 mesh->addMeshBuffer(copy);
 582                                 copy->drop();
 583                                 buf = copy;
 584                                 colors->push_back(
 585                                         ItemPartColor(layer->has_color, layer->color));
 586                         } else {
 587                                 (*colors)[i] = ItemPartColor(layer->has_color, layer->color);
 588                         }
 589                         video::SMaterial &material = buf->getMaterial();
 590                         if (set_material)
 591                                 layer->applyMaterialOptions(material);
 592                         if (mattype) {
 593                                 material.MaterialType = *mattype;
 594                         }
 595                         if (layer->animation_frame_count > 1) {
 596                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 597                                 material.setTexture(0, animation_frame.texture);
 598                         } else {
 599                                 material.setTexture(0, layer->texture);
 600                         }
 601                         if (use_shaders) {
 602                                 if (layer->normal_texture) {
 603                                         if (layer->animation_frame_count > 1) {
 604                                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 605                                                 material.setTexture(1, animation_frame.normal_texture);
 606                                         } else
 607                                                 material.setTexture(1, layer->normal_texture);
 608                                 }
 609                                 material.setTexture(2, layer->flags_texture);
 610                         }
 611                 }
 612         }
 613 }