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 (std::map<int, scene::IMesh*>::iterator
 150                                 it = m_extrusion_meshes.begin();
 151                                 it != m_extrusion_meshes.end(); ++it) {
 152                         it->second->drop();
 153                 }
 154                 m_cube->drop();
 155         }
 156         // Get closest extrusion mesh for given image dimensions
 157         // Caller must drop the returned pointer
 158         scene::IMesh* create(core::dimension2d<u32> dim)
 159         {
 160                 // handle non-power of two textures inefficiently without cache
 161                 if (!is_power_of_two(dim.Width) || !is_power_of_two(dim.Height)) {
 162                         return createExtrusionMesh(dim.Width, dim.Height);
 163                 }
 164
 165                 int maxdim = MYMAX(dim.Width, dim.Height);
 166
 167                 std::map<int, scene::IMesh*>::iterator
 168                         it = m_extrusion_meshes.lower_bound(maxdim);
 169
 170                 if (it == m_extrusion_meshes.end()) {
 171                         // no viable resolution found; use largest one
 172                         it = m_extrusion_meshes.find(MAX_EXTRUSION_MESH_RESOLUTION);
 173                         sanity_check(it != m_extrusion_meshes.end());
 174                 }
 175
 176                 scene::IMesh *mesh = it->second;
 177                 mesh->grab();
 178                 return mesh;
 179         }
 180         // Returns a 1x1x1 cube mesh with one meshbuffer (material) per face
 181         // Caller must drop the returned pointer
 182         scene::IMesh* createCube()
 183         {
 184                 m_cube->grab();
 185                 return m_cube;
 186         }
 187
 188 private:
 189         std::map<int, scene::IMesh*> m_extrusion_meshes;
 190         scene::IMesh *m_cube;
 191 };
 192
 193 ExtrusionMeshCache *g_extrusion_mesh_cache = NULL;
 194
 195
 196 WieldMeshSceneNode::WieldMeshSceneNode(scene::ISceneManager *mgr, s32 id, bool lighting):
 197         scene::ISceneNode(mgr->getRootSceneNode(), mgr, id),
 198         m_material_type(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF),
 199         m_lighting(lighting)
 200 {
 201         m_enable_shaders = g_settings->getBool("enable_shaders");
 202         m_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 203         m_bilinear_filter = g_settings->getBool("bilinear_filter");
 204         m_trilinear_filter = g_settings->getBool("trilinear_filter");
 205
 206         // If this is the first wield mesh scene node, create a cache
 207         // for extrusion meshes (and a cube mesh), otherwise reuse it
 208         if (!g_extrusion_mesh_cache)
 209                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 210         else
 211                 g_extrusion_mesh_cache->grab();
 212
 213         // Disable bounding box culling for this scene node
 214         // since we won't calculate the bounding box.
 215         setAutomaticCulling(scene::EAC_OFF);
 216
 217         // Create the child scene node
 218         scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 219         m_meshnode = SceneManager->addMeshSceneNode(dummymesh, this, -1);
 220         m_meshnode->setReadOnlyMaterials(false);
 221         m_meshnode->setVisible(false);
 222         dummymesh->drop(); // m_meshnode grabbed it
 223 }
 224
 225 WieldMeshSceneNode::~WieldMeshSceneNode()
 226 {
 227         sanity_check(g_extrusion_mesh_cache);
 228         if (g_extrusion_mesh_cache->drop())
 229                 g_extrusion_mesh_cache = nullptr;
 230 }
 231
 232 void WieldMeshSceneNode::setCube(const ContentFeatures &f,
 233                         v3f wield_scale)
 234 {
 235         scene::IMesh *cubemesh = g_extrusion_mesh_cache->createCube();
 236         scene::SMesh *copy = cloneMesh(cubemesh);
 237         cubemesh->drop();
 238         postProcessNodeMesh(copy, f, false, true, &m_material_type, &m_colors);
 239         changeToMesh(copy);
 240         copy->drop();
 241         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR);
 242 }
 243
 244 void WieldMeshSceneNode::setExtruded(const std::string &imagename,
 245                 v3f wield_scale, ITextureSource *tsrc, u8 num_frames)
 246 {
 247         video::ITexture *texture = tsrc->getTexture(imagename);
 248         if (!texture) {
 249                 changeToMesh(nullptr);
 250                 return;
 251         }
 252
 253         core::dimension2d<u32> dim = texture->getSize();
 254         // Detect animation texture and pull off top frame instead of using entire thing
 255         if (num_frames > 1) {
 256                 u32 frame_height = dim.Height / num_frames;
 257                 dim = core::dimension2d<u32>(dim.Width, frame_height);
 258         }
 259         scene::IMesh *mesh = g_extrusion_mesh_cache->create(dim);
 260         scene::SMesh *copy = cloneMesh(mesh);
 261         mesh->drop();
 262         changeToMesh(copy);
 263         copy->drop();
 264
 265         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR_EXTRUDED);
 266
 267         // Customize material
 268         video::SMaterial &material = m_meshnode->getMaterial(0);
 269         material.setTexture(0, tsrc->getTextureForMesh(imagename));
 270         material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 271         material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 272         material.MaterialType = m_material_type;
 273         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 274         // Enable bi/trilinear filtering only for high resolution textures
 275         if (dim.Width > 32) {
 276                 material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 277                 material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 278         } else {
 279                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
 280                 material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 281         }
 282         material.setFlag(video::EMF_ANISOTROPIC_FILTER, m_anisotropic_filter);
 283         // mipmaps cause "thin black line" artifacts
 284 #if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
 285         material.setFlag(video::EMF_USE_MIP_MAPS, false);
 286 #endif
 287         if (m_enable_shaders) {
 288                 material.setTexture(2, tsrc->getShaderFlagsTexture(false));
 289         }
 290 }
 291
 292 void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
 293 {
 294         ITextureSource *tsrc = client->getTextureSource();
 295         IItemDefManager *idef = client->getItemDefManager();
 296         IShaderSource *shdrsrc = client->getShaderSource();
 297         INodeDefManager *ndef = client->getNodeDefManager();
 298         const ItemDefinition &def = item.getDefinition(idef);
 299         const ContentFeatures &f = ndef->get(def.name);
 300         content_t id = ndef->getId(def.name);
 301
 302         if (m_enable_shaders) {
 303                 u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
 304                 m_material_type = shdrsrc->getShaderInfo(shader_id).material;
 305         }
 306
 307         // Color-related
 308         m_colors.clear();
 309         m_base_color = idef->getItemstackColor(item, client);
 310
 311         // If wield_image is defined, it overrides everything else
 312         if (def.wield_image != "") {
 313                 setExtruded(def.wield_image, def.wield_scale, tsrc, 1);
 314                 m_colors.push_back(ItemPartColor());
 315                 return;
 316         }
 317         // Handle nodes
 318         // See also CItemDefManager::createClientCached()
 319         else if (def.type == ITEM_NODE) {
 320                 if (f.mesh_ptr[0]) {
 321                         // e.g. mesh nodes and nodeboxes
 322                         scene::SMesh *mesh = cloneMesh(f.mesh_ptr[0]);
 323                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 324                                 &m_material_type, &m_colors);
 325                         changeToMesh(mesh);
 326                         mesh->drop();
 327                         // mesh is pre-scaled by BS * f->visual_scale
 328                         m_meshnode->setScale(
 329                                         def.wield_scale * WIELD_SCALE_FACTOR
 330                                         / (BS * f.visual_scale));
 331                 } else {
 332                         switch (f.drawtype) {
 333                                 case NDT_AIRLIKE: {
 334                                         changeToMesh(nullptr);
 335                                         break;
 336                                 }
 337                                 case NDT_PLANTLIKE: {
 338                                         setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 339                                                 def.wield_scale, tsrc,
 340                                                 f.tiles[0].layers[0].animation_frame_count);
 341                                         break;
 342                                 }
 343                                 case NDT_PLANTLIKE_ROOTED: {
 344                                         setExtruded(tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id),
 345                                                 def.wield_scale, tsrc,
 346                                                 f.special_tiles[0].layers[0].animation_frame_count);
 347                                         break;
 348                                 }
 349                                 case NDT_NORMAL:
 350                                 case NDT_ALLFACES: {
 351                                         setCube(f, def.wield_scale);
 352                                         break;
 353                                 }
 354                                 default: {
 355                                         MeshMakeData mesh_make_data(client, false);
 356                                         MapNode mesh_make_node(id, 255, 0);
 357                                         mesh_make_data.fillSingleNode(&mesh_make_node);
 358                                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 359                                         scene::SMesh *mesh = cloneMesh(mapblock_mesh.getMesh());
 360                                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 361                                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 362                                                 &m_material_type, &m_colors);
 363                                         changeToMesh(mesh);
 364                                         mesh->drop();
 365                                         m_meshnode->setScale(
 366                                                         def.wield_scale * WIELD_SCALE_FACTOR
 367                                                         / (BS * f.visual_scale));
 368                                 }
 369                         }
 370                 }
 371                 u32 material_count = m_meshnode->getMaterialCount();
 372                 for (u32 i = 0; i < material_count; ++i) {
 373                         video::SMaterial &material = m_meshnode->getMaterial(i);
 374                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 375                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 376                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 377                 }
 378                 return;
 379         }
 380         else if (def.inventory_image != "") {
 381                 setExtruded(def.inventory_image, def.wield_scale, tsrc, 1);
 382                 m_colors.push_back(ItemPartColor());
 383                 return;
 384         }
 385
 386         // no wield mesh found
 387         changeToMesh(nullptr);
 388 }
 389
 390 void WieldMeshSceneNode::setColor(video::SColor c)
 391 {
 392         assert(!m_lighting);
 393         scene::IMesh *mesh = m_meshnode->getMesh();
 394         if (!mesh)
 395                 return;
 396
 397         u8 red = c.getRed();
 398         u8 green = c.getGreen();
 399         u8 blue = c.getBlue();
 400         u32 mc = mesh->getMeshBufferCount();
 401         for (u32 j = 0; j < mc; j++) {
 402                 video::SColor bc(m_base_color);
 403                 if ((m_colors.size() > j) && (m_colors[j].override_base))
 404                         bc = m_colors[j].color;
 405                 video::SColor buffercolor(255,
 406                         bc.getRed() * red / 255,
 407                         bc.getGreen() * green / 255,
 408                         bc.getBlue() * blue / 255);
 409                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
 410                 colorizeMeshBuffer(buf, &buffercolor);
 411         }
 412 }
 413
 414 void WieldMeshSceneNode::render()
 415 {
 416         // note: if this method is changed to actually do something,
 417         // you probably should implement OnRegisterSceneNode as well
 418 }
 419
 420 void WieldMeshSceneNode::changeToMesh(scene::IMesh *mesh)
 421 {
 422         if (!mesh) {
 423                 scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 424                 m_meshnode->setVisible(false);
 425                 m_meshnode->setMesh(dummymesh);
 426                 dummymesh->drop();  // m_meshnode grabbed it
 427         } else {
 428                 m_meshnode->setMesh(mesh);
 429         }
 430
 431         m_meshnode->setMaterialFlag(video::EMF_LIGHTING, m_lighting);
 432         // need to normalize normals when lighting is enabled (because of setScale())
 433         m_meshnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, m_lighting);
 434         m_meshnode->setVisible(true);
 435 }
 436
 437 void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
 438 {
 439         ITextureSource *tsrc = client->getTextureSource();
 440         IItemDefManager *idef = client->getItemDefManager();
 441         INodeDefManager *ndef = client->getNodeDefManager();
 442         const ItemDefinition &def = item.getDefinition(idef);
 443         const ContentFeatures &f = ndef->get(def.name);
 444         content_t id = ndef->getId(def.name);
 445
 446         if (!g_extrusion_mesh_cache) {
 447                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 448         } else {
 449                 g_extrusion_mesh_cache->grab();
 450         }
 451
 452         scene::SMesh *mesh = nullptr;
 453
 454         // Shading is on by default
 455         result->needs_shading = true;
 456
 457         // If inventory_image is defined, it overrides everything else
 458         if (def.inventory_image != "") {
 459                 mesh = getExtrudedMesh(tsrc, def.inventory_image);
 460                 result->buffer_colors.push_back(ItemPartColor());
 461                 // Items with inventory images do not need shading
 462                 result->needs_shading = false;
 463         } else if (def.type == ITEM_NODE) {
 464                 if (f.mesh_ptr[0]) {
 465                         mesh = cloneMesh(f.mesh_ptr[0]);
 466                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 467                 } else {
 468                         switch (f.drawtype) {
 469                                 case NDT_PLANTLIKE: {
 470                                         mesh = getExtrudedMesh(tsrc,
 471                                                 tsrc->getTextureName(f.tiles[0].layers[0].texture_id));
 472                                         break;
 473                                 }
 474                                 case NDT_PLANTLIKE_ROOTED: {
 475                                         mesh = getExtrudedMesh(tsrc,
 476                                                 tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id));
 477                                         break;
 478                                 }
 479                                 case NDT_NORMAL:
 480                                 case NDT_ALLFACES:
 481                                 case NDT_LIQUID:
 482                                 case NDT_FLOWINGLIQUID: {
 483                                         scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
 484                                         mesh = cloneMesh(cube);
 485                                         cube->drop();
 486                                         scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
 487                                         break;
 488                                 }
 489                                 default: {
 490                                         MeshMakeData mesh_make_data(client, false);
 491                                         MapNode mesh_make_node(id, 255, 0);
 492                                         mesh_make_data.fillSingleNode(&mesh_make_node);
 493                                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 494                                         mesh = cloneMesh(mapblock_mesh.getMesh());
 495                                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 496                                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 497
 498                                         u32 mc = mesh->getMeshBufferCount();
 499                                         for (u32 i = 0; i < mc; ++i) {
 500                                                 video::SMaterial &material1 =
 501                                                         mesh->getMeshBuffer(i)->getMaterial();
 502                                                 video::SMaterial &material2 =
 503                                                         mapblock_mesh.getMesh()->getMeshBuffer(i)->getMaterial();
 504                                                 material1.setTexture(0, material2.getTexture(0));
 505                                                 material1.setTexture(1, material2.getTexture(1));
 506                                                 material1.setTexture(2, material2.getTexture(2));
 507                                                 material1.setTexture(3, material2.getTexture(3));
 508                                                 material1.MaterialType = material2.MaterialType;
 509                                         }
 510                                 }
 511                         }
 512                 }
 513
 514                 u32 mc = mesh->getMeshBufferCount();
 515                 for (u32 i = 0; i < mc; ++i) {
 516                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 517                         video::SMaterial &material = buf->getMaterial();
 518                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 519                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 520                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 521                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 522                         material.setFlag(video::EMF_LIGHTING, false);
 523                 }
 524
 525                 rotateMeshXZby(mesh, -45);
 526                 rotateMeshYZby(mesh, -30);
 527
 528                 postProcessNodeMesh(mesh, f, false, false, nullptr, &result->buffer_colors);
 529         }
 530         result->mesh = mesh;
 531 }
 532
 533
 534
 535 scene::SMesh *getExtrudedMesh(ITextureSource *tsrc, const std::string &imagename)
 536 {
 537         video::ITexture *texture = tsrc->getTextureForMesh(imagename);
 538         if (!texture) {
 539                 return nullptr;
 540         }
 541
 542         core::dimension2d<u32> dim = texture->getSize();
 543         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 544         scene::SMesh *mesh = cloneMesh(original);
 545         original->drop();
 546
 547         // Customize material
 548         video::SMaterial &material = mesh->getMeshBuffer(0)->getMaterial();
 549         material.setTexture(0, tsrc->getTexture(imagename));
 550         material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 551         material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 552         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 553         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 554         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 555         material.setFlag(video::EMF_LIGHTING, false);
 556         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 557         scaleMesh(mesh, v3f(2.0, 2.0, 2.0));
 558
 559         return mesh;
 560 }
 561
 562 void postProcessNodeMesh(scene::SMesh *mesh, const ContentFeatures &f,
 563         bool use_shaders, bool set_material, video::E_MATERIAL_TYPE *mattype,
 564         std::vector<ItemPartColor> *colors)
 565 {
 566         u32 mc = mesh->getMeshBufferCount();
 567         // Allocate colors for existing buffers
 568         colors->clear();
 569         for (u32 i = 0; i < mc; ++i)
 570                 colors->push_back(ItemPartColor());
 571
 572         for (u32 i = 0; i < mc; ++i) {
 573                 const TileSpec *tile = &(f.tiles[i]);
 574                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 575                 for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
 576                         const TileLayer *layer = &tile->layers[layernum];
 577                         if (layer->texture_id == 0)
 578                                 continue;
 579                         if (layernum != 0) {
 580                                 scene::IMeshBuffer *copy = cloneMeshBuffer(buf);
 581                                 copy->getMaterial() = buf->getMaterial();
 582                                 mesh->addMeshBuffer(copy);
 583                                 copy->drop();
 584                                 buf = copy;
 585                                 colors->push_back(
 586                                         ItemPartColor(layer->has_color, layer->color));
 587                         } else {
 588                                 (*colors)[i] = ItemPartColor(layer->has_color, layer->color);
 589                         }
 590                         video::SMaterial &material = buf->getMaterial();
 591                         if (set_material)
 592                                 layer->applyMaterialOptions(material);
 593                         if (mattype) {
 594                                 material.MaterialType = *mattype;
 595                         }
 596                         if (layer->animation_frame_count > 1) {
 597                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 598                                 material.setTexture(0, animation_frame.texture);
 599                         } else {
 600                                 material.setTexture(0, layer->texture);
 601                         }
 602                         if (use_shaders) {
 603                                 if (layer->normal_texture) {
 604                                         if (layer->animation_frame_count > 1) {
 605                                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 606                                                 material.setTexture(1, animation_frame.normal_texture);
 607                                         } else
 608                                                 material.setTexture(1, layer->normal_texture);
 609                                 }
 610                                 material.setTexture(2, layer->flags_texture);
 611                         }
 612                 }
 613         }
 614 }