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         const std::string &overlay_name, v3f wield_scale, ITextureSource *tsrc,
 244         u8 num_frames)
 245 {
 246         video::ITexture *texture = tsrc->getTexture(imagename);
 247         if (!texture) {
 248                 changeToMesh(nullptr);
 249                 return;
 250         }
 251         video::ITexture *overlay_texture =
 252                 overlay_name.empty() ? NULL : tsrc->getTexture(overlay_name);
 253
 254         core::dimension2d<u32> dim = texture->getSize();
 255         // Detect animation texture and pull off top frame instead of using entire thing
 256         if (num_frames > 1) {
 257                 u32 frame_height = dim.Height / num_frames;
 258                 dim = core::dimension2d<u32>(dim.Width, frame_height);
 259         }
 260         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 261         scene::SMesh *mesh = cloneMesh(original);
 262         original->drop();
 263         //set texture
 264         mesh->getMeshBuffer(0)->getMaterial().setTexture(0,
 265                 tsrc->getTexture(imagename));
 266         if (overlay_texture) {
 267                 scene::IMeshBuffer *copy = cloneMeshBuffer(mesh->getMeshBuffer(0));
 268                 copy->getMaterial().setTexture(0, overlay_texture);
 269                 mesh->addMeshBuffer(copy);
 270                 copy->drop();
 271         }
 272         changeToMesh(mesh);
 273         mesh->drop();
 274
 275         m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR_EXTRUDED);
 276
 277         // Customize materials
 278         for (u32 layer = 0; layer < m_meshnode->getMaterialCount(); layer++) {
 279                 video::SMaterial &material = m_meshnode->getMaterial(layer);
 280                 material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 281                 material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 282                 material.MaterialType = m_material_type;
 283                 material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 284                 // Enable bi/trilinear filtering only for high resolution textures
 285                 if (dim.Width > 32) {
 286                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 287                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 288                 } else {
 289                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 290                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 291                 }
 292                 material.setFlag(video::EMF_ANISOTROPIC_FILTER, m_anisotropic_filter);
 293                 // mipmaps cause "thin black line" artifacts
 294 #if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
 295                 material.setFlag(video::EMF_USE_MIP_MAPS, false);
 296 #endif
 297                 if (m_enable_shaders) {
 298                         material.setTexture(2, tsrc->getShaderFlagsTexture(false));
 299                 }
 300         }
 301 }
 302
 303 void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
 304 {
 305         ITextureSource *tsrc = client->getTextureSource();
 306         IItemDefManager *idef = client->getItemDefManager();
 307         IShaderSource *shdrsrc = client->getShaderSource();
 308         INodeDefManager *ndef = client->getNodeDefManager();
 309         const ItemDefinition &def = item.getDefinition(idef);
 310         const ContentFeatures &f = ndef->get(def.name);
 311         content_t id = ndef->getId(def.name);
 312
 313         if (m_enable_shaders) {
 314                 u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
 315                 m_material_type = shdrsrc->getShaderInfo(shader_id).material;
 316         }
 317
 318         // Color-related
 319         m_colors.clear();
 320         m_base_color = idef->getItemstackColor(item, client);
 321
 322         // If wield_image is defined, it overrides everything else
 323         if (!def.wield_image.empty()) {
 324                 setExtruded(def.wield_image, def.wield_overlay, def.wield_scale, tsrc,
 325                         1);
 326                 m_colors.emplace_back();
 327                 // overlay is white, if present
 328                 m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
 329                 return;
 330         }
 331
 332         // Handle nodes
 333         // See also CItemDefManager::createClientCached()
 334         if (def.type == ITEM_NODE) {
 335                 if (f.mesh_ptr[0]) {
 336                         // e.g. mesh nodes and nodeboxes
 337                         scene::SMesh *mesh = cloneMesh(f.mesh_ptr[0]);
 338                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 339                                 &m_material_type, &m_colors);
 340                         changeToMesh(mesh);
 341                         mesh->drop();
 342                         // mesh is pre-scaled by BS * f->visual_scale
 343                         m_meshnode->setScale(
 344                                         def.wield_scale * WIELD_SCALE_FACTOR
 345                                         / (BS * f.visual_scale));
 346                 } else {
 347                         switch (f.drawtype) {
 348                                 case NDT_AIRLIKE: {
 349                                         changeToMesh(nullptr);
 350                                         break;
 351                                 }
 352                                 case NDT_PLANTLIKE: {
 353                                         setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 354                                                 tsrc->getTextureName(f.tiles[0].layers[1].texture_id),
 355                                                 def.wield_scale, tsrc,
 356                                                 f.tiles[0].layers[0].animation_frame_count);
 357                                         // Add color
 358                                         const TileLayer &l0 = f.tiles[0].layers[0];
 359                                         m_colors.emplace_back(l0.has_color, l0.color);
 360                                         const TileLayer &l1 = f.tiles[0].layers[1];
 361                                         m_colors.emplace_back(l1.has_color, l1.color);
 362                                         break;
 363                                 }
 364                                 case NDT_PLANTLIKE_ROOTED: {
 365                                         setExtruded(tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id),
 366                                                 "", def.wield_scale, tsrc,
 367                                                 f.special_tiles[0].layers[0].animation_frame_count);
 368                                         // Add color
 369                                         const TileLayer &l0 = f.special_tiles[0].layers[0];
 370                                         m_colors.emplace_back(l0.has_color, l0.color);
 371                                         break;
 372                                 }
 373                                 case NDT_NORMAL:
 374                                 case NDT_ALLFACES: {
 375                                         setCube(f, def.wield_scale);
 376                                         break;
 377                                 }
 378                                 default: {
 379                                         MeshMakeData mesh_make_data(client, false);
 380                                         MapNode mesh_make_node(id, 255, 0);
 381                                         mesh_make_data.fillSingleNode(&mesh_make_node);
 382                                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 383                                         scene::SMesh *mesh = cloneMesh(mapblock_mesh.getMesh());
 384                                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 385                                         postProcessNodeMesh(mesh, f, m_enable_shaders, true,
 386                                                 &m_material_type, &m_colors);
 387                                         changeToMesh(mesh);
 388                                         mesh->drop();
 389                                         m_meshnode->setScale(
 390                                                         def.wield_scale * WIELD_SCALE_FACTOR
 391                                                         / (BS * f.visual_scale));
 392                                 }
 393                         }
 394                 }
 395                 u32 material_count = m_meshnode->getMaterialCount();
 396                 for (u32 i = 0; i < material_count; ++i) {
 397                         video::SMaterial &material = m_meshnode->getMaterial(i);
 398                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 399                         material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
 400                         material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
 401                 }
 402                 return;
 403         }
 404         else if (!def.inventory_image.empty()) {
 405                 setExtruded(def.inventory_image, def.inventory_overlay, def.wield_scale,
 406                         tsrc, 1);
 407                 m_colors.emplace_back();
 408                 // overlay is white, if present
 409                 m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
 410                 return;
 411         }
 412
 413         // no wield mesh found
 414         changeToMesh(nullptr);
 415 }
 416
 417 void WieldMeshSceneNode::setColor(video::SColor c)
 418 {
 419         assert(!m_lighting);
 420         scene::IMesh *mesh = m_meshnode->getMesh();
 421         if (!mesh)
 422                 return;
 423
 424         u8 red = c.getRed();
 425         u8 green = c.getGreen();
 426         u8 blue = c.getBlue();
 427         u32 mc = mesh->getMeshBufferCount();
 428         for (u32 j = 0; j < mc; j++) {
 429                 video::SColor bc(m_base_color);
 430                 if ((m_colors.size() > j) && (m_colors[j].override_base))
 431                         bc = m_colors[j].color;
 432                 video::SColor buffercolor(255,
 433                         bc.getRed() * red / 255,
 434                         bc.getGreen() * green / 255,
 435                         bc.getBlue() * blue / 255);
 436                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
 437                 colorizeMeshBuffer(buf, &buffercolor);
 438         }
 439 }
 440
 441 void WieldMeshSceneNode::render()
 442 {
 443         // note: if this method is changed to actually do something,
 444         // you probably should implement OnRegisterSceneNode as well
 445 }
 446
 447 void WieldMeshSceneNode::changeToMesh(scene::IMesh *mesh)
 448 {
 449         if (!mesh) {
 450                 scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
 451                 m_meshnode->setVisible(false);
 452                 m_meshnode->setMesh(dummymesh);
 453                 dummymesh->drop();  // m_meshnode grabbed it
 454         } else {
 455                 m_meshnode->setMesh(mesh);
 456         }
 457
 458         m_meshnode->setMaterialFlag(video::EMF_LIGHTING, m_lighting);
 459         // need to normalize normals when lighting is enabled (because of setScale())
 460         m_meshnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, m_lighting);
 461         m_meshnode->setVisible(true);
 462 }
 463
 464 void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
 465 {
 466         ITextureSource *tsrc = client->getTextureSource();
 467         IItemDefManager *idef = client->getItemDefManager();
 468         INodeDefManager *ndef = client->getNodeDefManager();
 469         const ItemDefinition &def = item.getDefinition(idef);
 470         const ContentFeatures &f = ndef->get(def.name);
 471         content_t id = ndef->getId(def.name);
 472
 473         if (!g_extrusion_mesh_cache) {
 474                 g_extrusion_mesh_cache = new ExtrusionMeshCache();
 475         } else {
 476                 g_extrusion_mesh_cache->grab();
 477         }
 478
 479         scene::SMesh *mesh = nullptr;
 480
 481         // Shading is on by default
 482         result->needs_shading = true;
 483
 484         // If inventory_image is defined, it overrides everything else
 485         if (!def.inventory_image.empty()) {
 486                 mesh = getExtrudedMesh(tsrc, def.inventory_image,
 487                         def.inventory_overlay);
 488                 result->buffer_colors.emplace_back();
 489                 // overlay is white, if present
 490                 result->buffer_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
 491                 // Items with inventory images do not need shading
 492                 result->needs_shading = false;
 493         } else if (def.type == ITEM_NODE) {
 494                 if (f.mesh_ptr[0]) {
 495                         mesh = cloneMesh(f.mesh_ptr[0]);
 496                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 497                         postProcessNodeMesh(mesh, f, false, false, nullptr,
 498                                 &result->buffer_colors);
 499                 } else {
 500                         switch (f.drawtype) {
 501                                 case NDT_PLANTLIKE: {
 502                                         mesh = getExtrudedMesh(tsrc,
 503                                                 tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
 504                                                 tsrc->getTextureName(f.tiles[0].layers[1].texture_id));
 505                                         // Add color
 506                                         const TileLayer &l0 = f.tiles[0].layers[0];
 507                                         result->buffer_colors.emplace_back(l0.has_color, l0.color);
 508                                         const TileLayer &l1 = f.tiles[0].layers[1];
 509                                         result->buffer_colors.emplace_back(l1.has_color, l1.color);
 510                                         break;
 511                                 }
 512                                 case NDT_PLANTLIKE_ROOTED: {
 513                                         mesh = getExtrudedMesh(tsrc,
 514                                                 tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id), "");
 515                                         // Add color
 516                                         const TileLayer &l0 = f.special_tiles[0].layers[0];
 517                                         result->buffer_colors.emplace_back(l0.has_color, l0.color);
 518                                         break;
 519                                 }
 520                                 case NDT_NORMAL:
 521                                 case NDT_ALLFACES:
 522                                 case NDT_LIQUID:
 523                                 case NDT_FLOWINGLIQUID: {
 524                                         scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
 525                                         mesh = cloneMesh(cube);
 526                                         cube->drop();
 527                                         scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
 528                                         // add overlays
 529                                         postProcessNodeMesh(mesh, f, false, false, nullptr,
 530                                                 &result->buffer_colors);
 531                                         break;
 532                                 }
 533                                 default: {
 534                                         MeshMakeData mesh_make_data(client, false);
 535                                         MapNode mesh_make_node(id, 255, 0);
 536                                         mesh_make_data.fillSingleNode(&mesh_make_node);
 537                                         MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 538                                         mesh = cloneMesh(mapblock_mesh.getMesh());
 539                                         translateMesh(mesh, v3f(-BS, -BS, -BS));
 540                                         scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
 541
 542                                         u32 mc = mesh->getMeshBufferCount();
 543                                         for (u32 i = 0; i < mc; ++i) {
 544                                                 video::SMaterial &material1 =
 545                                                         mesh->getMeshBuffer(i)->getMaterial();
 546                                                 video::SMaterial &material2 =
 547                                                         mapblock_mesh.getMesh()->getMeshBuffer(i)->getMaterial();
 548                                                 material1.setTexture(0, material2.getTexture(0));
 549                                                 material1.setTexture(1, material2.getTexture(1));
 550                                                 material1.setTexture(2, material2.getTexture(2));
 551                                                 material1.setTexture(3, material2.getTexture(3));
 552                                                 material1.MaterialType = material2.MaterialType;
 553                                         }
 554                                         // add overlays (since getMesh() returns
 555                                         // the base layer only)
 556                                         postProcessNodeMesh(mesh, f, false, false, nullptr,
 557                                                 &result->buffer_colors);
 558                                 }
 559                         }
 560                 }
 561
 562                 u32 mc = mesh->getMeshBufferCount();
 563                 for (u32 i = 0; i < mc; ++i) {
 564                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 565                         video::SMaterial &material = buf->getMaterial();
 566                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 567                         material.setFlag(video::EMF_BILINEAR_FILTER, false);
 568                         material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 569                         material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 570                         material.setFlag(video::EMF_LIGHTING, false);
 571                 }
 572
 573                 rotateMeshXZby(mesh, -45);
 574                 rotateMeshYZby(mesh, -30);
 575         }
 576         result->mesh = mesh;
 577 }
 578
 579
 580
 581 scene::SMesh *getExtrudedMesh(ITextureSource *tsrc,
 582         const std::string &imagename, const std::string &overlay_name)
 583 {
 584         // check textures
 585         video::ITexture *texture = tsrc->getTextureForMesh(imagename);
 586         if (!texture) {
 587                 return NULL;
 588         }
 589         video::ITexture *overlay_texture =
 590                 (overlay_name.empty()) ? NULL : tsrc->getTexture(overlay_name);
 591
 592         // get mesh
 593         core::dimension2d<u32> dim = texture->getSize();
 594         scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
 595         scene::SMesh *mesh = cloneMesh(original);
 596         original->drop();
 597
 598         //set texture
 599         mesh->getMeshBuffer(0)->getMaterial().setTexture(0,
 600                 tsrc->getTexture(imagename));
 601         if (overlay_texture) {
 602                 scene::IMeshBuffer *copy = cloneMeshBuffer(mesh->getMeshBuffer(0));
 603                 copy->getMaterial().setTexture(0, overlay_texture);
 604                 mesh->addMeshBuffer(copy);
 605                 copy->drop();
 606         }
 607         // Customize materials
 608         for (u32 layer = 0; layer < mesh->getMeshBufferCount(); layer++) {
 609                 video::SMaterial &material = mesh->getMeshBuffer(layer)->getMaterial();
 610                 material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
 611                 material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
 612                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
 613                 material.setFlag(video::EMF_TRILINEAR_FILTER, false);
 614                 material.setFlag(video::EMF_BACK_FACE_CULLING, true);
 615                 material.setFlag(video::EMF_LIGHTING, false);
 616                 material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 617         }
 618         scaleMesh(mesh, v3f(2.0, 2.0, 2.0));
 619
 620         return mesh;
 621 }
 622
 623 void postProcessNodeMesh(scene::SMesh *mesh, const ContentFeatures &f,
 624         bool use_shaders, bool set_material, const video::E_MATERIAL_TYPE *mattype,
 625         std::vector<ItemPartColor> *colors)
 626 {
 627         u32 mc = mesh->getMeshBufferCount();
 628         // Allocate colors for existing buffers
 629         colors->clear();
 630         for (u32 i = 0; i < mc; ++i)
 631                 colors->push_back(ItemPartColor());
 632
 633         for (u32 i = 0; i < mc; ++i) {
 634                 const TileSpec *tile = &(f.tiles[i]);
 635                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 636                 for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
 637                         const TileLayer *layer = &tile->layers[layernum];
 638                         if (layer->texture_id == 0)
 639                                 continue;
 640                         if (layernum != 0) {
 641                                 scene::IMeshBuffer *copy = cloneMeshBuffer(buf);
 642                                 copy->getMaterial() = buf->getMaterial();
 643                                 mesh->addMeshBuffer(copy);
 644                                 copy->drop();
 645                                 buf = copy;
 646                                 colors->push_back(
 647                                         ItemPartColor(layer->has_color, layer->color));
 648                         } else {
 649                                 (*colors)[i] = ItemPartColor(layer->has_color, layer->color);
 650                         }
 651                         video::SMaterial &material = buf->getMaterial();
 652                         if (set_material)
 653                                 layer->applyMaterialOptions(material);
 654                         if (mattype) {
 655                                 material.MaterialType = *mattype;
 656                         }
 657                         if (layer->animation_frame_count > 1) {
 658                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 659                                 material.setTexture(0, animation_frame.texture);
 660                         } else {
 661                                 material.setTexture(0, layer->texture);
 662                         }
 663                         if (use_shaders) {
 664                                 if (layer->normal_texture) {
 665                                         if (layer->animation_frame_count > 1) {
 666                                                 const FrameSpec &animation_frame = (*layer->frames)[0];
 667                                                 material.setTexture(1, animation_frame.normal_texture);
 668                                         } else
 669                                                 material.setTexture(1, layer->normal_texture);
 670                                 }
 671                                 material.setTexture(2, layer->flags_texture);
 672                         }
 673                 }
 674         }
 675 }