ToolDefManager serialization
[oweals/minetest.git] / src / tile.cpp
index 13550b2e4a58a57e34e58548be41bedac84a7881..c8fffffa7ad44fca8a8d16669efd0d0b50e9667d 100644 (file)
@@ -1,6 +1,6 @@
 /*
 Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -19,6 +19,271 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "tile.h"
 #include "debug.h"
+#include "main.h" // for g_settings
+#include "filesys.h"
+#include "utility.h"
+#include "settings.h"
+#include <ICameraSceneNode.h>
+#include "log.h"
+#include "mapnode.h" // For texture atlas making
+#include "mineral.h" // For texture atlas making
+#include "nodedef.h" // For texture atlas making
+#include "gamedef.h"
+
+/*
+       A cache from texture name to texture path
+*/
+MutexedMap<std::string, std::string> g_texturename_to_path_cache;
+
+/*
+       Replaces the filename extension.
+       eg:
+               std::string image = "a/image.png"
+               replace_ext(image, "jpg")
+               -> image = "a/image.jpg"
+       Returns true on success.
+*/
+static bool replace_ext(std::string &path, const char *ext)
+{
+       if(ext == NULL)
+               return false;
+       // Find place of last dot, fail if \ or / found.
+       s32 last_dot_i = -1;
+       for(s32 i=path.size()-1; i>=0; i--)
+       {
+               if(path[i] == '.')
+               {
+                       last_dot_i = i;
+                       break;
+               }
+               
+               if(path[i] == '\\' || path[i] == '/')
+                       break;
+       }
+       // If not found, return an empty string
+       if(last_dot_i == -1)
+               return false;
+       // Else make the new path
+       path = path.substr(0, last_dot_i+1) + ext;
+       return true;
+}
+
+/*
+       Find out the full path of an image by trying different filename
+       extensions.
+
+       If failed, return "".
+*/
+static std::string getImagePath(std::string path)
+{
+       // A NULL-ended list of possible image extensions
+       const char *extensions[] = {
+               "png", "jpg", "bmp", "tga",
+               "pcx", "ppm", "psd", "wal", "rgb",
+               NULL
+       };
+
+       const char **ext = extensions;
+       do{
+               bool r = replace_ext(path, *ext);
+               if(r == false)
+                       return "";
+               if(fs::PathExists(path))
+                       return path;
+       }
+       while((++ext) != NULL);
+       
+       return "";
+}
+
+/*
+       Gets the path to a texture by first checking if the texture exists
+       in texture_path and if not, using the data path.
+
+       Checks all supported extensions by replacing the original extension.
+
+       If not found, returns "".
+
+       Utilizes a thread-safe cache.
+*/
+std::string getTexturePath(const std::string &filename)
+{
+       std::string fullpath = "";
+       /*
+               Check from cache
+       */
+       bool incache = g_texturename_to_path_cache.get(filename, &fullpath);
+       if(incache)
+               return fullpath;
+       
+       /*
+               Check from texture_path
+       */
+       std::string texture_path = g_settings->get("texture_path");
+       if(texture_path != "")
+       {
+               std::string testpath = texture_path + DIR_DELIM + filename;
+               // Check all filename extensions. Returns "" if not found.
+               fullpath = getImagePath(testpath);
+       }
+       
+       /*
+               Check from default data directory
+       */
+       if(fullpath == "")
+       {
+               std::string rel_path = std::string("textures")+DIR_DELIM+filename;
+               std::string testpath = porting::path_data + DIR_DELIM + rel_path;
+               // Check all filename extensions. Returns "" if not found.
+               fullpath = getImagePath(testpath);
+       }
+       
+       // Add to cache (also an empty result is cached)
+       g_texturename_to_path_cache.set(filename, fullpath);
+       
+       // Finally return it
+       return fullpath;
+}
+
+/*
+       TextureSource
+*/
+
+class TextureSource : public IWritableTextureSource
+{
+public:
+       TextureSource(IrrlichtDevice *device);
+       ~TextureSource();
+
+       /*
+               Example case:
+               Now, assume a texture with the id 1 exists, and has the name
+               "stone.png^mineral1".
+               Then a random thread calls getTextureId for a texture called
+               "stone.png^mineral1^crack0".
+               ...Now, WTF should happen? Well:
+               - getTextureId strips off stuff recursively from the end until
+                 the remaining part is found, or nothing is left when
+                 something is stripped out
+
+               But it is slow to search for textures by names and modify them
+               like that?
+               - ContentFeatures is made to contain ids for the basic plain
+                 textures
+               - Crack textures can be slow by themselves, but the framework
+                 must be fast.
+
+               Example case #2:
+               - Assume a texture with the id 1 exists, and has the name
+                 "stone.png^mineral1" and is specified as a part of some atlas.
+               - Now MapBlock::getNodeTile() stumbles upon a node which uses
+                 texture id 1, and finds out that NODEMOD_CRACK must be applied
+                 with progression=0
+               - It finds out the name of the texture with getTextureName(1),
+                 appends "^crack0" to it and gets a new texture id with
+                 getTextureId("stone.png^mineral1^crack0")
+
+       */
+       
+       /*
+               Gets a texture id from cache or
+               - if main thread, from getTextureIdDirect
+               - if other thread, adds to request queue and waits for main thread
+       */
+       u32 getTextureId(const std::string &name);
+       
+       /*
+               Example names:
+               "stone.png"
+               "stone.png^crack2"
+               "stone.png^blit:mineral_coal.png"
+               "stone.png^blit:mineral_coal.png^crack1"
+
+               - If texture specified by name is found from cache, return the
+                 cached id.
+               - Otherwise generate the texture, add to cache and return id.
+                 Recursion is used to find out the largest found part of the
+                 texture and continue based on it.
+
+               The id 0 points to a NULL texture. It is returned in case of error.
+       */
+       u32 getTextureIdDirect(const std::string &name);
+
+       /*
+               Finds out the name of a cached texture.
+       */
+       std::string getTextureName(u32 id);
+
+       /*
+               If texture specified by the name pointed by the id doesn't
+               exist, create it, then return the cached texture.
+
+               Can be called from any thread. If called from some other thread
+               and not found in cache, the call is queued to the main thread
+               for processing.
+       */
+       AtlasPointer getTexture(u32 id);
+       
+       AtlasPointer getTexture(const std::string &name)
+       {
+               return getTexture(getTextureId(name));
+       }
+       
+       // Gets a separate texture
+       video::ITexture* getTextureRaw(const std::string &name)
+       {
+               AtlasPointer ap = getTexture(name);
+               return ap.atlas;
+       }
+
+       /*
+               Update new texture pointer and texture coordinates to an
+               AtlasPointer based on it's texture id
+       */
+       void updateAP(AtlasPointer &ap);
+
+       /*
+               Build the main texture atlas which contains most of the
+               textures.
+               
+               This is called by the constructor.
+       */
+       void buildMainAtlas(class IGameDef *gamedef);
+       
+       /*
+               Processes queued texture requests from other threads.
+
+               Shall be called from the main thread.
+       */
+       void processQueue();
+       
+private:
+       
+       // The id of the thread that is allowed to use irrlicht directly
+       threadid_t m_main_thread;
+       // The irrlicht device
+       IrrlichtDevice *m_device;
+       
+       // A texture id is index in this array.
+       // The first position contains a NULL texture.
+       core::array<SourceAtlasPointer> m_atlaspointer_cache;
+       // Maps a texture name to an index in the former.
+       core::map<std::string, u32> m_name_to_id;
+       // The two former containers are behind this mutex
+       JMutex m_atlaspointer_cache_mutex;
+       
+       // Main texture atlas. This is filled at startup and is then not touched.
+       video::IImage *m_main_atlas_image;
+       video::ITexture *m_main_atlas_texture;
+
+       // Queued texture fetches (to be processed by the main thread)
+       RequestQueue<std::string, u32, u8, u8> m_get_texture_queue;
+};
+
+IWritableTextureSource* createTextureSource(IrrlichtDevice *device)
+{
+       return new TextureSource(device);
+}
 
 TextureSource::TextureSource(IrrlichtDevice *device):
                m_device(device),
@@ -34,9 +299,6 @@ TextureSource::TextureSource(IrrlichtDevice *device):
        // Add a NULL AtlasPointer as the first index, named ""
        m_atlaspointer_cache.push_back(SourceAtlasPointer(""));
        m_name_to_id[""] = 0;
-
-       // Build main texture atlas
-       buildMainAtlas();
 }
 
 TextureSource::~TextureSource()
@@ -53,9 +315,9 @@ void TextureSource::processQueue()
                GetRequest<std::string, u32, u8, u8>
                                request = m_get_texture_queue.pop();
 
-               dstream<<"INFO: TextureSource::processQueue(): "
+               infostream<<"TextureSource::processQueue(): "
                                <<"got texture request with "
-                               <<"name="<<request.key
+                               <<"name=\""<<request.key<<"\""
                                <<std::endl;
 
                GetResult<std::string, u32, u8, u8>
@@ -70,7 +332,7 @@ void TextureSource::processQueue()
 
 u32 TextureSource::getTextureId(const std::string &name)
 {
-       //dstream<<"INFO: getTextureId(): name="<<name<<std::endl;
+       //infostream<<"getTextureId(): \""<<name<<"\""<<std::endl;
 
        {
                /*
@@ -94,7 +356,7 @@ u32 TextureSource::getTextureId(const std::string &name)
        }
        else
        {
-               dstream<<"INFO: getTextureId(): Queued: name="<<name<<std::endl;
+               infostream<<"getTextureId(): Queued: name=\""<<name<<"\""<<std::endl;
 
                // We're gonna ask the result to be put into here
                ResultQueue<std::string, u32, u8, u8> result_queue;
@@ -102,8 +364,8 @@ u32 TextureSource::getTextureId(const std::string &name)
                // Throw a request in
                m_get_texture_queue.add(name, 0, 0, &result_queue);
                
-               dstream<<"INFO: Waiting for texture from main thread, name="
-                               <<name<<std::endl;
+               infostream<<"Waiting for texture from main thread, name=\""
+                               <<name<<"\""<<std::endl;
                
                try
                {
@@ -118,12 +380,12 @@ u32 TextureSource::getTextureId(const std::string &name)
                }
                catch(ItemNotFoundException &e)
                {
-                       dstream<<"WARNING: Waiting for texture timed out."<<std::endl;
+                       infostream<<"Waiting for texture timed out."<<std::endl;
                        return 0;
                }
        }
        
-       dstream<<"WARNING: getTextureId(): Failed"<<std::endl;
+       infostream<<"getTextureId(): Failed"<<std::endl;
 
        return 0;
 }
@@ -136,7 +398,7 @@ void make_progressbar(float value, video::IImage *image);
        if baseimg is NULL, it is created. Otherwise stuff is made on it.
 */
 bool generate_image(std::string part_of_name, video::IImage *& baseimg,
-               video::IVideoDriver* driver);
+               IrrlichtDevice *device);
 
 /*
        Generates an image from a full string like
@@ -145,19 +407,19 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
        This is used by buildMainAtlas().
 */
 video::IImage* generate_image_from_scratch(std::string name,
-               video::IVideoDriver* driver);
+               IrrlichtDevice *device);
 
 /*
        This method generates all the textures
 */
 u32 TextureSource::getTextureIdDirect(const std::string &name)
 {
-       dstream<<"INFO: getTextureIdDirect(): name="<<name<<std::endl;
+       //infostream<<"getTextureIdDirect(): name=\""<<name<<"\""<<std::endl;
 
        // Empty name means texture 0
        if(name == "")
        {
-               dstream<<"INFO: getTextureIdDirect(): name is empty"<<std::endl;
+               infostream<<"getTextureIdDirect(): name is empty"<<std::endl;
                return 0;
        }
        
@@ -166,7 +428,7 @@ u32 TextureSource::getTextureIdDirect(const std::string &name)
        */
        if(get_current_thread_id() != m_main_thread)
        {
-               dstream<<"ERROR: TextureSource::getTextureIdDirect() "
+               errorstream<<"TextureSource::getTextureIdDirect() "
                                "called not from main thread"<<std::endl;
                return 0;
        }
@@ -181,14 +443,14 @@ u32 TextureSource::getTextureIdDirect(const std::string &name)
                n = m_name_to_id.find(name);
                if(n != NULL)
                {
-                       dstream<<"INFO: getTextureIdDirect(): name="<<name
-                                       <<" found in cache"<<std::endl;
+                       infostream<<"getTextureIdDirect(): \""<<name
+                                       <<"\" found in cache"<<std::endl;
                        return n->getValue();
                }
        }
 
-       dstream<<"INFO: getTextureIdDirect(): name="<<name
-                       <<" NOT found in cache. Creating it."<<std::endl;
+       infostream<<"getTextureIdDirect(): \""<<name
+                       <<"\" NOT found in cache. Creating it."<<std::endl;
        
        /*
                Get the base image
@@ -222,12 +484,13 @@ u32 TextureSource::getTextureIdDirect(const std::string &name)
        {
                // Construct base name
                base_image_name = name.substr(0, last_separator_position);
-               dstream<<"INFO: getTextureIdDirect(): Calling itself recursively"
-                               " to get base image, name="<<base_image_name<<std::endl;
+               /*infostream<<"getTextureIdDirect(): Calling itself recursively"
+                               " to get base image of \""<<name<<"\" = \""
+                <<base_image_name<<"\""<<std::endl;*/
                base_image_id = getTextureIdDirect(base_image_name);
        }
        
-       dstream<<"base_image_id="<<base_image_id<<std::endl;
+       //infostream<<"base_image_id="<<base_image_id<<std::endl;
        
        video::IVideoDriver* driver = m_device->getVideoDriver();
        assert(driver);
@@ -247,23 +510,32 @@ u32 TextureSource::getTextureIdDirect(const std::string &name)
                SourceAtlasPointer ap = m_atlaspointer_cache[base_image_id];
 
                video::IImage *image = ap.atlas_img;
+               
+               if(image == NULL)
+               {
+                       infostream<<"getTextureIdDirect(): NULL image in "
+                                       <<"cache: \""<<base_image_name<<"\""
+                                       <<std::endl;
+               }
+               else
+               {
+                       core::dimension2d<u32> dim = ap.intsize;
 
-               core::dimension2d<u32> dim = ap.intsize;
-
-               baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+                       baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
 
-               core::position2d<s32> pos_to(0,0);
-               core::position2d<s32> pos_from = ap.intpos;
-               
-               image->copyTo(
-                               baseimg, // target
-                               v2s32(0,0), // position in target
-                               core::rect<s32>(pos_from, dim) // from
-               );
-
-               dstream<<"INFO: getTextureIdDirect(): Loaded \""
-                               <<base_image_name<<"\" from image cache"
-                               <<std::endl;
+                       core::position2d<s32> pos_to(0,0);
+                       core::position2d<s32> pos_from = ap.intpos;
+                       
+                       image->copyTo(
+                                       baseimg, // target
+                                       v2s32(0,0), // position in target
+                                       core::rect<s32>(pos_from, dim) // from
+                       );
+
+                       /*infostream<<"getTextureIdDirect(): Loaded \""
+                                       <<base_image_name<<"\" from image cache"
+                                       <<std::endl;*/
+               }
        }
        
        /*
@@ -272,34 +544,31 @@ u32 TextureSource::getTextureIdDirect(const std::string &name)
        */
 
        std::string last_part_of_name = name.substr(last_separator_position+1);
-       dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
-       
+       //infostream<<"last_part_of_name=\""<<last_part_of_name<<"\""<<std::endl;
+
        // Generate image according to part of name
-       if(generate_image(last_part_of_name, baseimg, driver) == false)
+       if(generate_image(last_part_of_name, baseimg, m_device) == false)
        {
-               dstream<<"INFO: getTextureIdDirect(): "
+               infostream<<"getTextureIdDirect(): "
                                "failed to generate \""<<last_part_of_name<<"\""
                                <<std::endl;
-               return 0;
        }
 
-       // If no resulting image, return NULL
+       // If no resulting image, print a warning
        if(baseimg == NULL)
        {
-               dstream<<"WARNING: getTextureIdDirect(): baseimg is NULL (attempted to"
+               infostream<<"getTextureIdDirect(): baseimg is NULL (attempted to"
                                " create texture \""<<name<<"\""<<std::endl;
-               return 0;
        }
-
-       // Create texture from resulting image
-       t = driver->addTexture(name.c_str(), baseimg);
        
-       // If no texture
-       if(t == NULL)
-               return 0;
-
+       if(baseimg != NULL)
+       {
+               // Create texture from resulting image
+               t = driver->addTexture(name.c_str(), baseimg);
+       }
+       
        /*
-               Add texture to caches
+               Add texture to caches (add NULL textures too)
        */
 
        JMutexAutoLock lock(m_atlaspointer_cache_mutex);
@@ -310,12 +579,15 @@ u32 TextureSource::getTextureIdDirect(const std::string &name)
        ap.pos = v2f(0,0);
        ap.size = v2f(1,1);
        ap.tiled = 0;
-       SourceAtlasPointer nap(name, ap, baseimg, v2s32(0,0), baseimg->getDimension());
+       core::dimension2d<u32> baseimg_dim(0,0);
+       if(baseimg)
+               baseimg_dim = baseimg->getDimension();
+       SourceAtlasPointer nap(name, ap, baseimg, v2s32(0,0), baseimg_dim);
        m_atlaspointer_cache.push_back(nap);
        m_name_to_id.insert(name, id);
 
-       dstream<<"INFO: getTextureIdDirect(): name="<<name
-                       <<": succesfully returning id="<<id<<std::endl;
+       /*infostream<<"getTextureIdDirect(): "
+                       <<"Returning id="<<id<<" for name \""<<name<<"\""<<std::endl;*/
        
        return id;
 }
@@ -326,7 +598,7 @@ std::string TextureSource::getTextureName(u32 id)
 
        if(id >= m_atlaspointer_cache.size())
        {
-               dstream<<"WARNING: TextureSource::getTextureName(): id="<<id
+               infostream<<"TextureSource::getTextureName(): id="<<id
                                <<" >= m_atlaspointer_cache.size()="
                                <<m_atlaspointer_cache.size()<<std::endl;
                return "";
@@ -346,9 +618,18 @@ AtlasPointer TextureSource::getTexture(u32 id)
        return m_atlaspointer_cache[id].a;
 }
 
-void TextureSource::buildMainAtlas() 
+void TextureSource::updateAP(AtlasPointer &ap)
+{
+       AtlasPointer ap2 = getTexture(ap.id);
+       ap = ap2;
+}
+
+void TextureSource::buildMainAtlas(class IGameDef *gamedef) 
 {
-       dstream<<"TextureSource::buildMainAtlas()"<<std::endl;
+       assert(gamedef->tsrc() == this);
+       INodeDefManager *ndef = gamedef->ndef();
+
+       infostream<<"TextureSource::buildMainAtlas()"<<std::endl;
 
        //return; // Disable (for testing)
        
@@ -361,48 +642,74 @@ void TextureSource::buildMainAtlas()
        core::dimension2d<u32> atlas_dim(1024,1024);
        video::IImage *atlas_img =
                        driver->createImage(video::ECF_A8R8G8B8, atlas_dim);
+       //assert(atlas_img);
+       if(atlas_img == NULL)
+       {
+               errorstream<<"TextureSource::buildMainAtlas(): Failed to create atlas "
+                               "image; not building texture atlas."<<std::endl;
+               return;
+       }
 
        /*
-               A list of stuff to add. This should contain as much of the
-               stuff shown in game as possible, to minimize texture changes.
+               Grab list of stuff to include in the texture atlas from the
+               main content features
        */
 
-       core::array<std::string> sourcelist;
-
-       sourcelist.push_back("stone.png");
-       sourcelist.push_back("mud.png");
-       sourcelist.push_back("sand.png");
-       sourcelist.push_back("grass.png");
-       sourcelist.push_back("grass_footsteps.png");
-       sourcelist.push_back("tree.png");
-       sourcelist.push_back("tree_top.png");
-       sourcelist.push_back("water.png");
-       sourcelist.push_back("leaves.png");
-       sourcelist.push_back("mud.png^grass_side.png");
-       
-       sourcelist.push_back("stone.png^mineral_coal.png");
-       sourcelist.push_back("stone.png^mineral_iron.png");
-       sourcelist.push_back("mud.png^mineral_coal.png");
-       sourcelist.push_back("mud.png^mineral_iron.png");
-       sourcelist.push_back("sand.png^mineral_coal.png");
-       sourcelist.push_back("sand.png^mineral_iron.png");
+       core::map<std::string, bool> sourcelist;
+
+       for(u16 j=0; j<MAX_CONTENT+1; j++)
+       {
+               if(j == CONTENT_IGNORE || j == CONTENT_AIR)
+                       continue;
+               const ContentFeatures &f = ndef->get(j);
+               for(std::set<std::string>::const_iterator
+                               i = f.used_texturenames.begin();
+                               i != f.used_texturenames.end(); i++)
+               {
+                       std::string name = *i;
+                       sourcelist[name] = true;
+
+                       if(f.often_contains_mineral){
+                               for(int k=1; k<MINERAL_COUNT; k++){
+                                       std::string mineraltexture = mineral_block_texture(k);
+                                       std::string fulltexture = name + "^" + mineraltexture;
+                                       sourcelist[fulltexture] = true;
+                               }
+                       }
+               }
+       }
        
+       infostream<<"Creating texture atlas out of textures: ";
+       for(core::map<std::string, bool>::Iterator
+                       i = sourcelist.getIterator();
+                       i.atEnd() == false; i++)
+       {
+               std::string name = i.getNode()->getKey();
+               infostream<<"\""<<name<<"\" ";
+       }
+       infostream<<std::endl;
+
        // Padding to disallow texture bleeding
-       s32 padding = 8;
+       s32 padding = 16;
+
+       s32 column_width = 256;
+       s32 column_padding = 16;
 
        /*
                First pass: generate almost everything
        */
        core::position2d<s32> pos_in_atlas(0,0);
        
-       pos_in_atlas.Y += padding;
+       pos_in_atlas.Y = padding;
 
-       for(u32 i=0; i<sourcelist.size(); i++)
+       for(core::map<std::string, bool>::Iterator
+                       i = sourcelist.getIterator();
+                       i.atEnd() == false; i++)
        {
-               std::string name = sourcelist[i];
+               std::string name = i.getNode()->getKey();
 
                /*video::IImage *img = driver->createImageFromFile(
-                               porting::getDataPath(name.c_str()).c_str());
+                               getTexturePath(name.c_str()).c_str());
                if(img == NULL)
                        continue;
                
@@ -414,11 +721,45 @@ void TextureSource::buildMainAtlas()
                img->drop();*/
                
                // Generate image by name
-               video::IImage *img2 = generate_image_from_scratch(name, driver);
+               video::IImage *img2 = generate_image_from_scratch(name, m_device);
+               if(img2 == NULL)
+               {
+                       infostream<<"TextureSource::buildMainAtlas(): Couldn't generate texture atlas: Couldn't generate image \""<<name<<"\""<<std::endl;
+                       continue;
+               }
+
                core::dimension2d<u32> dim = img2->getDimension();
+
+               // Don't add to atlas if image is large
+               core::dimension2d<u32> max_size_in_atlas(32,32);
+               if(dim.Width > max_size_in_atlas.Width
+               || dim.Height > max_size_in_atlas.Height)
+               {
+                       infostream<<"TextureSource::buildMainAtlas(): Not adding "
+                                       <<"\""<<name<<"\" because image is large"<<std::endl;
+                       continue;
+               }
+
+               // Wrap columns and stop making atlas if atlas is full
+               if(pos_in_atlas.Y + dim.Height > atlas_dim.Height)
+               {
+                       if(pos_in_atlas.X > (s32)atlas_dim.Width - 256 - padding){
+                               errorstream<<"TextureSource::buildMainAtlas(): "
+                                               <<"Atlas is full, not adding more textures."
+                                               <<std::endl;
+                               break;
+                       }
+                       pos_in_atlas.Y = padding;
+                       pos_in_atlas.X += column_width + column_padding;
+               }
                
+        infostream<<"TextureSource::buildMainAtlas(): Adding \""<<name
+                <<"\" to texture atlas"<<std::endl;
+
                // Tile it a few times in the X direction
-               u16 xwise_tiling = 16;
+               u16 xwise_tiling = column_width / dim.Width;
+               if(xwise_tiling > 16) // Limit to 16 (more gives no benefit)
+                       xwise_tiling = 16;
                for(u32 j=0; j<xwise_tiling; j++)
                {
                        // Copy the copy to the atlas
@@ -446,7 +787,7 @@ void TextureSource::buildMainAtlas()
                                dst_y = -y0 + pos_in_atlas.Y-1;
                                src_y = pos_in_atlas.Y;
                        }
-                       s32 x = x0 + pos_in_atlas.X * dim.Width;
+                       s32 x = x0 + pos_in_atlas.X;
                        video::SColor c = atlas_img->getPixel(x, src_y);
                        atlas_img->setPixel(x,dst_y,c);
                }
@@ -457,8 +798,18 @@ void TextureSource::buildMainAtlas()
                        Add texture to caches
                */
                
-               // Get next id
+               bool reuse_old_id = false;
                u32 id = m_atlaspointer_cache.size();
+               // Check old id without fetching a texture
+               core::map<std::string, u32>::Node *n;
+               n = m_name_to_id.find(name);
+               // If it exists, we will replace the old definition
+               if(n){
+                       id = n->getValue();
+                       reuse_old_id = true;
+               }
+               infostream<<"TextureSource::buildMainAtlas(): "
+                               <<"Replacing old AtlasPointer"<<std::endl;
 
                // Create AtlasPointer
                AtlasPointer ap(id);
@@ -471,8 +822,11 @@ void TextureSource::buildMainAtlas()
 
                // Create SourceAtlasPointer and add to containers
                SourceAtlasPointer nap(name, ap, atlas_img, pos_in_atlas, dim);
-               m_atlaspointer_cache.push_back(nap);
-               m_name_to_id.insert(name, id);
+               if(reuse_old_id)
+                       m_atlaspointer_cache[id] = nap;
+               else
+                       m_atlaspointer_cache.push_back(nap);
+               m_name_to_id[name] = id;
                        
                // Increment position
                pos_in_atlas.Y += dim.Height + padding * 2;
@@ -487,26 +841,38 @@ void TextureSource::buildMainAtlas()
        /*
                Second pass: set texture pointer in generated AtlasPointers
        */
-       for(u32 i=0; i<sourcelist.size(); i++)
+       for(core::map<std::string, bool>::Iterator
+                       i = sourcelist.getIterator();
+                       i.atEnd() == false; i++)
        {
-               std::string name = sourcelist[i];
+               std::string name = i.getNode()->getKey();
+               if(m_name_to_id.find(name) == NULL)
+                       continue;
                u32 id = m_name_to_id[name];
+               //infostream<<"id of name "<<name<<" is "<<id<<std::endl;
                m_atlaspointer_cache[id].a.atlas = t;
        }
 
        /*
                Write image to file so that it can be inspected
        */
-       /*driver->writeImageToFile(atlas_img, 
-                       porting::getDataPath("main_atlas.png").c_str());*/
+       /*std::string atlaspath = porting::path_userdata
+                       + DIR_DELIM + "generated_texture_atlas.png";
+       infostream<<"Removing and writing texture atlas for inspection to "
+                       <<atlaspath<<std::endl;
+       fs::RecursiveDelete(atlaspath);
+       driver->writeImageToFile(atlas_img, atlaspath.c_str());*/
 }
 
 video::IImage* generate_image_from_scratch(std::string name,
-               video::IVideoDriver* driver)
+               IrrlichtDevice *device)
 {
-       dstream<<"INFO: generate_image_from_scratch(): "
-                       "name="<<name<<std::endl;
+       /*infostream<<"generate_image_from_scratch(): "
+                       "\""<<name<<"\""<<std::endl;*/
        
+       video::IVideoDriver* driver = device->getVideoDriver();
+       assert(driver);
+
        /*
                Get the base image
        */
@@ -526,7 +892,7 @@ video::IImage* generate_image_from_scratch(std::string name,
                }
        }
 
-       /*dstream<<"INFO: generate_image_from_scratch(): "
+       /*infostream<<"generate_image_from_scratch(): "
                        <<"last_separator_position="<<last_separator_position
                        <<std::endl;*/
 
@@ -539,9 +905,10 @@ video::IImage* generate_image_from_scratch(std::string name,
        {
                // Construct base name
                base_image_name = name.substr(0, last_separator_position);
-               dstream<<"INFO: generate_image_from_scratch(): Calling itself recursively"
-                               " to get base image, name="<<base_image_name<<std::endl;
-               baseimg = generate_image_from_scratch(base_image_name, driver);
+               /*infostream<<"generate_image_from_scratch(): Calling itself recursively"
+                               " to get base image of \""<<name<<"\" = \""
+                <<base_image_name<<"\""<<std::endl;*/
+               baseimg = generate_image_from_scratch(base_image_name, device);
        }
        
        /*
@@ -550,12 +917,12 @@ video::IImage* generate_image_from_scratch(std::string name,
        */
 
        std::string last_part_of_name = name.substr(last_separator_position+1);
-       dstream<<"last_part_of_name="<<last_part_of_name<<std::endl;
+       //infostream<<"last_part_of_name=\""<<last_part_of_name<<"\""<<std::endl;
        
        // Generate image according to part of name
-       if(generate_image(last_part_of_name, baseimg, driver) == false)
+       if(generate_image(last_part_of_name, baseimg, device) == false)
        {
-               dstream<<"INFO: generate_image_from_scratch(): "
+               infostream<<"generate_image_from_scratch(): "
                                "failed to generate \""<<last_part_of_name<<"\""
                                <<std::endl;
                return NULL;
@@ -565,30 +932,55 @@ video::IImage* generate_image_from_scratch(std::string name,
 }
 
 bool generate_image(std::string part_of_name, video::IImage *& baseimg,
-               video::IVideoDriver* driver)
+               IrrlichtDevice *device)
 {
+       video::IVideoDriver* driver = device->getVideoDriver();
+       assert(driver);
+
        // Stuff starting with [ are special commands
        if(part_of_name[0] != '[')
        {
                // A normal texture; load it from a file
-               std::string path = porting::getDataPath(part_of_name.c_str());
-               dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
-                               <<"\""<<std::endl;
+               std::string path = getTexturePath(part_of_name.c_str());
+               /*infostream<<"generate_image(): Loading path \""<<path
+                               <<"\""<<std::endl;*/
                
                video::IImage *image = driver->createImageFromFile(path.c_str());
 
                if(image == NULL)
                {
-                       dstream<<"WARNING: Could not load image \""<<part_of_name
-                                       <<"\" from path \""<<path<<"\""
+                       infostream<<"generate_image(): Could not load image \""
+                    <<part_of_name<<"\" from path \""<<path<<"\""
                                        <<" while building texture"<<std::endl;
-                       return false;
+
+                       //return false;
+
+                       infostream<<"generate_image(): Creating a dummy"
+                    <<" image for \""<<part_of_name<<"\""<<std::endl;
+
+                       // Just create a dummy image
+                       //core::dimension2d<u32> dim(2,2);
+                       core::dimension2d<u32> dim(1,1);
+                       image = driver->createImage(video::ECF_A8R8G8B8, dim);
+                       assert(image);
+                       /*image->setPixel(0,0, video::SColor(255,255,0,0));
+                       image->setPixel(1,0, video::SColor(255,0,255,0));
+                       image->setPixel(0,1, video::SColor(255,0,0,255));
+                       image->setPixel(1,1, video::SColor(255,255,0,255));*/
+                       image->setPixel(0,0, video::SColor(255,myrand()%256,
+                                       myrand()%256,myrand()%256));
+                       /*image->setPixel(1,0, video::SColor(255,myrand()%256,
+                                       myrand()%256,myrand()%256));
+                       image->setPixel(0,1, video::SColor(255,myrand()%256,
+                                       myrand()%256,myrand()%256));
+                       image->setPixel(1,1, video::SColor(255,myrand()%256,
+                                       myrand()%256,myrand()%256));*/
                }
 
                // If base image is NULL, load as base.
                if(baseimg == NULL)
                {
-                       dstream<<"INFO: Setting "<<part_of_name<<" as base"<<std::endl;
+                       //infostream<<"Setting "<<part_of_name<<" as base"<<std::endl;
                        /*
                                Copy it this way to get an alpha channel.
                                Otherwise images with alpha cannot be blitted on 
@@ -602,7 +994,7 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                // Else blit on base.
                else
                {
-                       dstream<<"INFO: Blitting "<<part_of_name<<" on base"<<std::endl;
+                       //infostream<<"Blitting "<<part_of_name<<" on base"<<std::endl;
                        // Size of the copied area
                        core::dimension2d<u32> dim = image->getDimension();
                        //core::dimension2d<u32> dim(16,16);
@@ -623,7 +1015,7 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
        {
                // A special texture modification
 
-               dstream<<"INFO: getTextureIdDirect(): generating special "
+               infostream<<"generate_image(): generating special "
                                <<"modification \""<<part_of_name<<"\""
                                <<std::endl;
                
@@ -646,44 +1038,88 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                {
                        if(baseimg == NULL)
                        {
-                               dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
-                                               <<"for part_of_name="<<part_of_name
-                                               <<", cancelling."<<std::endl;
+                               infostream<<"generate_image(): baseimg==NULL "
+                                               <<"for part_of_name=\""<<part_of_name
+                                               <<"\", cancelling."<<std::endl;
                                return false;
                        }
-
+                       
+                       // Crack image number
                        u16 progression = stoi(part_of_name.substr(6));
+
                        // Size of the base image
                        core::dimension2d<u32> dim_base = baseimg->getDimension();
-                       // Crack will be drawn at this size
-                       u32 cracksize = 16;
-                       // Size of the crack image
-                       core::dimension2d<u32> dim_crack(cracksize,cracksize);
-                       // Position to copy the crack from in the crack image
-                       core::position2d<s32> pos_other(0, 16 * progression);
-
-                       video::IImage *crackimage = driver->createImageFromFile(
-                                       porting::getDataPath("crack.png").c_str());
+                       
+                       /*
+                               Load crack image.
+
+                               It is an image with a number of cracking stages
+                               horizontally tiled.
+                       */
+                       video::IImage *img_crack = driver->createImageFromFile(
+                                       getTexturePath("crack.png").c_str());
                
-                       if(crackimage)
+                       if(img_crack)
                        {
-                               /*crackimage->copyToWithAlpha(baseimg, v2s32(0,0),
-                                               core::rect<s32>(pos_other, dim_base),
-                                               video::SColor(255,255,255,255),
-                                               NULL);*/
-
-                               for(u32 y0=0; y0<dim_base.Height/dim_crack.Height; y0++)
-                               for(u32 x0=0; x0<dim_base.Width/dim_crack.Width; x0++)
+                               // Dimension of original image
+                               core::dimension2d<u32> dim_crack
+                                               = img_crack->getDimension();
+                               // Count of crack stages
+                               u32 crack_count = dim_crack.Height / dim_crack.Width;
+                               // Limit progression
+                               if(progression > crack_count-1)
+                                       progression = crack_count-1;
+                               // Dimension of a single scaled crack stage
+                               core::dimension2d<u32> dim_crack_scaled_single(
+                                       dim_base.Width,
+                                       dim_base.Height
+                               );
+                               // Dimension of scaled size
+                               core::dimension2d<u32> dim_crack_scaled(
+                                       dim_crack_scaled_single.Width,
+                                       dim_crack_scaled_single.Height * crack_count
+                               );
+                               // Create scaled crack image
+                               video::IImage *img_crack_scaled = driver->createImage(
+                                               video::ECF_A8R8G8B8, dim_crack_scaled);
+                               if(img_crack_scaled)
                                {
-                                       // Position to copy the crack to in the base image
-                                       core::position2d<s32> pos_base(x0*cracksize, y0*cracksize);
-                                       crackimage->copyToWithAlpha(baseimg, pos_base,
-                                                       core::rect<s32>(pos_other, dim_crack),
-                                                       video::SColor(255,255,255,255),
-                                                       NULL);
+                                       // Scale crack image by copying
+                                       img_crack->copyToScaling(img_crack_scaled);
+                                       
+                                       // Position to copy the crack from
+                                       core::position2d<s32> pos_crack_scaled(
+                                               0,
+                                               dim_crack_scaled_single.Height * progression
+                                       );
+                                       
+                                       // This tiling does nothing currently but is useful
+                                       for(u32 y0=0; y0<dim_base.Height
+                                                       / dim_crack_scaled_single.Height; y0++)
+                                       for(u32 x0=0; x0<dim_base.Width
+                                                       / dim_crack_scaled_single.Width; x0++)
+                                       {
+                                               // Position to copy the crack to in the base image
+                                               core::position2d<s32> pos_base(
+                                                       x0*dim_crack_scaled_single.Width,
+                                                       y0*dim_crack_scaled_single.Height
+                                               );
+                                               // Rectangle to copy the crack from on the scaled image
+                                               core::rect<s32> rect_crack_scaled(
+                                                       pos_crack_scaled,
+                                                       dim_crack_scaled_single
+                                               );
+                                               // Copy it
+                                               img_crack_scaled->copyToWithAlpha(baseimg, pos_base,
+                                                               rect_crack_scaled,
+                                                               video::SColor(255,255,255,255),
+                                                               NULL);
+                                       }
+
+                                       img_crack_scaled->drop();
                                }
-
-                               crackimage->drop();
+                               
+                               img_crack->drop();
                        }
                }
                /*
@@ -696,7 +1132,7 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                        sf.next(":");
                        u32 w0 = stoi(sf.next("x"));
                        u32 h0 = stoi(sf.next(":"));
-                       dstream<<"INFO: combined w="<<w0<<" h="<<h0<<std::endl;
+                       infostream<<"combined w="<<w0<<" h="<<h0<<std::endl;
                        core::dimension2d<u32> dim(w0,h0);
                        baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
                        while(sf.atend() == false)
@@ -704,15 +1140,15 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                                u32 x = stoi(sf.next(","));
                                u32 y = stoi(sf.next("="));
                                std::string filename = sf.next(":");
-                               dstream<<"INFO: Adding \""<<filename
+                               infostream<<"Adding \""<<filename
                                                <<"\" to combined ("<<x<<","<<y<<")"
                                                <<std::endl;
                                video::IImage *img = driver->createImageFromFile(
-                                               porting::getDataPath(filename.c_str()).c_str());
+                                               getTexturePath(filename.c_str()).c_str());
                                if(img)
                                {
                                        core::dimension2d<u32> dim = img->getDimension();
-                                       dstream<<"INFO: Size "<<dim.Width
+                                       infostream<<"Size "<<dim.Width
                                                        <<"x"<<dim.Height<<std::endl;
                                        core::position2d<s32> pos_base(x, y);
                                        video::IImage *img2 =
@@ -727,7 +1163,7 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                                }
                                else
                                {
-                                       dstream<<"WARNING: img==NULL"<<std::endl;
+                                       infostream<<"img==NULL"<<std::endl;
                                }
                        }
                }
@@ -739,9 +1175,9 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                {
                        if(baseimg == NULL)
                        {
-                               dstream<<"WARNING: getTextureIdDirect(): baseimg==NULL "
-                                               <<"for part_of_name="<<part_of_name
-                                               <<", cancelling."<<std::endl;
+                               infostream<<"generate_image(): baseimg==NULL "
+                                               <<"for part_of_name=\""<<part_of_name
+                                               <<"\", cancelling."<<std::endl;
                                return false;
                        }
 
@@ -759,24 +1195,24 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                {
                        if(baseimg != NULL)
                        {
-                               dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
-                                               <<"for part_of_name="<<part_of_name
-                                               <<", cancelling."<<std::endl;
+                               infostream<<"generate_image(): baseimg!=NULL "
+                                               <<"for part_of_name=\""<<part_of_name
+                                               <<"\", cancelling."<<std::endl;
                                return false;
                        }
 
                        std::string filename = part_of_name.substr(9);
 
-                       std::string path = porting::getDataPath(filename.c_str());
+                       std::string path = getTexturePath(filename.c_str());
 
-                       dstream<<"INFO: getTextureIdDirect(): Loading path \""<<path
+                       infostream<<"generate_image(): Loading path \""<<path
                                        <<"\""<<std::endl;
                        
                        video::IImage *image = driver->createImageFromFile(path.c_str());
                        
                        if(image == NULL)
                        {
-                               dstream<<"WARNING: getTextureIdDirect(): Loading path \""
+                               infostream<<"generate_image(): Loading path \""
                                                <<path<<"\" failed"<<std::endl;
                        }
                        else
@@ -798,6 +1234,122 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                                image->drop();
                        }
                }
+               /*
+                       "[makealpha:R,G,B:filename.png"
+                       Use an image with converting one color to transparent.
+               */
+               else if(part_of_name.substr(0,11) == "[makealpha:")
+               {
+                       if(baseimg != NULL)
+                       {
+                               infostream<<"generate_image(): baseimg!=NULL "
+                                               <<"for part_of_name=\""<<part_of_name
+                                               <<"\", cancelling."<<std::endl;
+                               return false;
+                       }
+
+                       Strfnd sf(part_of_name.substr(11));
+                       u32 r1 = stoi(sf.next(","));
+                       u32 g1 = stoi(sf.next(","));
+                       u32 b1 = stoi(sf.next(":"));
+                       std::string filename = sf.next("");
+
+                       std::string path = getTexturePath(filename.c_str());
+
+                       infostream<<"generate_image(): Loading path \""<<path
+                                       <<"\""<<std::endl;
+                       
+                       video::IImage *image = driver->createImageFromFile(path.c_str());
+                       
+                       if(image == NULL)
+                       {
+                               infostream<<"generate_image(): Loading path \""
+                                               <<path<<"\" failed"<<std::endl;
+                       }
+                       else
+                       {
+                               core::dimension2d<u32> dim = image->getDimension();
+                               baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+                               
+                               // Blit
+                               image->copyTo(baseimg);
+
+                               image->drop();
+
+                               for(u32 y=0; y<dim.Height; y++)
+                               for(u32 x=0; x<dim.Width; x++)
+                               {
+                                       video::SColor c = baseimg->getPixel(x,y);
+                                       u32 r = c.getRed();
+                                       u32 g = c.getGreen();
+                                       u32 b = c.getBlue();
+                                       if(!(r == r1 && g == g1 && b == b1))
+                                               continue;
+                                       c.setAlpha(0);
+                                       baseimg->setPixel(x,y,c);
+                               }
+                       }
+               }
+               /*
+                       "[makealpha2:R,G,B;R2,G2,B2:filename.png"
+                       Use an image with converting two colors to transparent.
+               */
+               else if(part_of_name.substr(0,12) == "[makealpha2:")
+               {
+                       if(baseimg != NULL)
+                       {
+                               infostream<<"generate_image(): baseimg!=NULL "
+                                               <<"for part_of_name=\""<<part_of_name
+                                               <<"\", cancelling."<<std::endl;
+                               return false;
+                       }
+
+                       Strfnd sf(part_of_name.substr(12));
+                       u32 r1 = stoi(sf.next(","));
+                       u32 g1 = stoi(sf.next(","));
+                       u32 b1 = stoi(sf.next(";"));
+                       u32 r2 = stoi(sf.next(","));
+                       u32 g2 = stoi(sf.next(","));
+                       u32 b2 = stoi(sf.next(":"));
+                       std::string filename = sf.next("");
+
+                       std::string path = getTexturePath(filename.c_str());
+
+                       infostream<<"generate_image(): Loading path \""<<path
+                                       <<"\""<<std::endl;
+                       
+                       video::IImage *image = driver->createImageFromFile(path.c_str());
+                       
+                       if(image == NULL)
+                       {
+                               infostream<<"generate_image(): Loading path \""
+                                               <<path<<"\" failed"<<std::endl;
+                       }
+                       else
+                       {
+                               core::dimension2d<u32> dim = image->getDimension();
+                               baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+
+                               // Blit
+                               image->copyTo(baseimg);
+
+                               image->drop();
+                               
+                               for(u32 y=0; y<dim.Height; y++)
+                               for(u32 x=0; x<dim.Width; x++)
+                               {
+                                       video::SColor c = baseimg->getPixel(x,y);
+                                       u32 r = c.getRed();
+                                       u32 g = c.getGreen();
+                                       u32 b = c.getBlue();
+                                       if(!(r == r1 && g == g1 && b == b1) &&
+                                          !(r == r2 && g == g2 && b == b2))
+                                               continue;
+                                       c.setAlpha(0);
+                                       baseimg->setPixel(x,y,c);
+                               }
+                       }
+               }
                /*
                        [inventorycube{topimage{leftimage{rightimage
                        In every subimage, replace ^ with &.
@@ -810,14 +1362,12 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                {
                        if(baseimg != NULL)
                        {
-                               dstream<<"WARNING: getTextureIdDirect(): baseimg!=NULL "
-                                               <<"for part_of_name="<<part_of_name
-                                               <<", cancelling."<<std::endl;
+                               infostream<<"generate_image(): baseimg!=NULL "
+                                               <<"for part_of_name=\""<<part_of_name
+                                               <<"\", cancelling."<<std::endl;
                                return false;
                        }
 
-                       // This is just a placeholder
-
                        str_replace_char(part_of_name, '&', '^');
                        Strfnd sf(part_of_name);
                        sf.next("{");
@@ -825,52 +1375,123 @@ bool generate_image(std::string part_of_name, video::IImage *& baseimg,
                        std::string imagename_left = sf.next("{");
                        std::string imagename_right = sf.next("{");
 
-                       baseimg = generate_image_from_scratch(
-                                       imagename_top, driver);
-
+#if 1
                        //TODO
-#if 0
+
                        if(driver->queryFeature(video::EVDF_RENDER_TO_TARGET) == false)
                        {
-                               dstream<<"WARNING: getTextureIdDirect(): EVDF_RENDER_TO_TARGET"
-                                               " not supported"<<std::endl;
-                               return false;
+                               infostream<<"generate_image(): EVDF_RENDER_TO_TARGET"
+                                               " not supported. Creating fallback image"<<std::endl;
+                               baseimg = generate_image_from_scratch(
+                                               imagename_top, device);
+                               return true;
                        }
                        
-                       u32 w0 = 16;
-                       u32 h0 = 16;
-                       dstream<<"INFO: inventorycube w="<<w0<<" h="<<h0<<std::endl;
+                       u32 w0 = 64;
+                       u32 h0 = 64;
+                       //infostream<<"inventorycube w="<<w0<<" h="<<h0<<std::endl;
                        core::dimension2d<u32> dim(w0,h0);
-
-                       //baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
-
+                       
+                       // Generate images for the faces of the cube
                        video::IImage *img_top = generate_image_from_scratch(
-                                       imagename_top, driver);
+                                       imagename_top, device);
                        video::IImage *img_left = generate_image_from_scratch(
-                                       imagename_left, driver);
+                                       imagename_left, device);
                        video::IImage *img_right = generate_image_from_scratch(
-                                       imagename_right, driver);
+                                       imagename_right, device);
+                       assert(img_top && img_left && img_right);
+
+                       // TODO: Create textures from images
+                       video::ITexture *texture_top = driver->addTexture(
+                                       (imagename_top + "__temp__").c_str(), img_top);
+                       assert(texture_top);
+                       
+                       // Drop images
+                       img_top->drop();
+                       img_left->drop();
+                       img_right->drop();
                        
-                       // Render target texture
+                       // Create render target texture
                        video::ITexture *rtt = NULL;
                        std::string rtt_name = part_of_name + "_RTT";
-                       
-                       rtt = driver->addRenderTargetTexture(dim, rtt_name.c_str());
+                       rtt = driver->addRenderTargetTexture(dim, rtt_name.c_str(),
+                                       video::ECF_A8R8G8B8);
                        assert(rtt);
                        
+                       // Set render target
+                       driver->setRenderTarget(rtt, true, true,
+                                       video::SColor(0,0,0,0));
                        
+                       // Get a scene manager
+                       scene::ISceneManager *smgr_main = device->getSceneManager();
+                       assert(smgr_main);
+                       scene::ISceneManager *smgr = smgr_main->createNewSceneManager();
+                       assert(smgr);
                        
-                       img_top->drop();
-                       img_left->drop();
-                       img_right->drop();
+                       /*
+                               Create scene:
+                               - An unit cube is centered at 0,0,0
+                               - Camera looks at cube from Y+, Z- towards Y-, Z+
+                               NOTE: Cube has to be changed to something else because
+                               the textures cannot be set individually (or can they?)
+                       */
+
+                       scene::ISceneNode* cube = smgr->addCubeSceneNode(1.0, NULL, -1,
+                                       v3f(0,0,0), v3f(0, 45, 0));
+                       // Set texture of cube
+                       cube->setMaterialTexture(0, texture_top);
+                       //cube->setMaterialFlag(video::EMF_LIGHTING, false);
+                       cube->setMaterialFlag(video::EMF_ANTI_ALIASING, false);
+                       cube->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
+
+                       scene::ICameraSceneNode* camera = smgr->addCameraSceneNode(0,
+                                       v3f(0, 1.0, -1.5), v3f(0, 0, 0));
+                       // Set orthogonal projection
+                       core::CMatrix4<f32> pm;
+                       pm.buildProjectionMatrixOrthoLH(1.65, 1.65, 0, 100);
+                       camera->setProjectionMatrix(pm, true);
+
+                       /*scene::ILightSceneNode *light =*/ smgr->addLightSceneNode(0,
+                                       v3f(-50, 100, 0), video::SColorf(0.5,0.5,0.5), 1000);
+
+                       smgr->setAmbientLight(video::SColorf(0.2,0.2,0.2));
+
+                       // Render scene
+                       driver->beginScene(true, true, video::SColor(0,0,0,0));
+                       smgr->drawAll();
+                       driver->endScene();
                        
-                       //TODO
-                       assert(0);
+                       // NOTE: The scene nodes should not be dropped, otherwise
+                       //       smgr->drop() segfaults
+                       /*cube->drop();
+                       camera->drop();
+                       light->drop();*/
+                       // Drop scene manager
+                       smgr->drop();
+                       
+                       // Unset render target
+                       driver->setRenderTarget(0, true, true, 0);
+
+                       //TODO: Free textures of images
+                       driver->removeTexture(texture_top);
+                       
+                       // Create image of render target
+                       video::IImage *image = driver->createImage(rtt, v2s32(0,0), dim);
+
+                       assert(image);
+                       
+                       baseimg = driver->createImage(video::ECF_A8R8G8B8, dim);
+
+                       if(image)
+                       {
+                               image->copyTo(baseimg);
+                               image->drop();
+                       }
 #endif
                }
                else
                {
-                       dstream<<"WARNING: getTextureIdDirect(): Invalid "
+                       infostream<<"generate_image(): Invalid "
                                        " modification: \""<<part_of_name<<"\""<<std::endl;
                }
        }
@@ -885,9 +1506,9 @@ void make_progressbar(float value, video::IImage *image)
        
        core::dimension2d<u32> size = image->getDimension();
 
-       u32 barheight = 1;
-       u32 barpad_x = 1;
-       u32 barpad_y = 1;
+       u32 barheight = size.Height/16;
+       u32 barpad_x = size.Width/16;
+       u32 barpad_y = size.Height/16;
        u32 barwidth = size.Width - barpad_x*2;
        v2u32 barpos(barpad_x, size.Height - barheight - barpad_y);