C++ ITextureSource类代码示例

bool MapBlockMesh::animate(bool faraway, float time, int crack, u32 daynight_ratio)
{
	if(!m_has_animation)
	{
		m_animation_force_timer = 100000;
		return false;
	}

	m_animation_force_timer = myrand_range(5, 100);

	// Cracks
	if(crack != m_last_crack)
	{
		for(std::map<u32, std::string>::iterator
				i = m_crack_materials.begin();
				i != m_crack_materials.end(); i++)
		{
			scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
			std::string basename = i->second;

			// Create new texture name from original
			ITextureSource *tsrc = m_gamedef->getTextureSource();
			std::ostringstream os;
			os<<basename<<crack;
			AtlasPointer ap = tsrc->getTexture(os.str());
			buf->getMaterial().setTexture(0, ap.atlas);
		}

		m_last_crack = crack;
	}

	// Day-night transition
	if(daynight_ratio != m_last_daynight_ratio)
	{
		for(std::map<u32, std::map<u32, std::pair<u8, u8> > >::iterator
				i = m_daynight_diffs.begin();
				i != m_daynight_diffs.end(); i++)
		{
			scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
			video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
			for(std::map<u32, std::pair<u8, u8 > >::iterator
					j = i->second.begin();
					j != i->second.end(); j++)
			{
				u32 vertexIndex = j->first;
				u8 day = j->second.first;
				u8 night = j->second.second;
				finalColorBlend(vertices[vertexIndex].Color,
						day, night, daynight_ratio);
			}
		}
		m_last_daynight_ratio = daynight_ratio;
	}

	return true;
}

GUIChatConsole::GUIChatConsole(
		gui::IGUIEnvironment* env,
		gui::IGUIElement* parent,
		s32 id,
		ChatBackend* backend,
		Client* client,
		IMenuManager* menumgr
):
	IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
			core::rect<s32>(0,0,100,100)),
	m_chat_backend(backend),
	m_client(client),
	m_menumgr(menumgr),
	m_animate_time_old(porting::getTimeMs())
{
	// load background settings
	s32 console_alpha = g_settings->getS32("console_alpha");
	m_background_color.setAlpha(clamp_u8(console_alpha));

	// load the background texture depending on settings
	ITextureSource *tsrc = client->getTextureSource();
	if (tsrc->isKnownSourceImage("background_chat.jpg")) {
		m_background = tsrc->getTexture("background_chat.jpg");
		m_background_color.setRed(255);
		m_background_color.setGreen(255);
		m_background_color.setBlue(255);
	} else {
		v3f console_color = g_settings->getV3F("console_color");
		m_background_color.setRed(clamp_u8(myround(console_color.X)));
		m_background_color.setGreen(clamp_u8(myround(console_color.Y)));
		m_background_color.setBlue(clamp_u8(myround(console_color.Z)));
	}

	m_font = g_fontengine->getFont(FONT_SIZE_UNSPECIFIED, FM_Mono);

	if (!m_font) {
		errorstream << "GUIChatConsole: Unable to load mono font ";
	} else {
		core::dimension2d<u32> dim = m_font->getDimension(L"M");
		m_fontsize = v2u32(dim.Width, dim.Height);
		m_font->grab();
	}
	m_fontsize.X = MYMAX(m_fontsize.X, 1);
	m_fontsize.Y = MYMAX(m_fontsize.Y, 1);

	// set default cursor options
	setCursor(true, true, 2.0, 0.1);
}

	ClientCached* createClientCachedDirect(const std::string &name,
			Client *client) const
	{
		infostream<<"Lazily creating item texture and mesh for \""
				<<name<<"\""<<std::endl;

		// This is not thread-safe
		sanity_check(std::this_thread::get_id() == m_main_thread);

		// Skip if already in cache
		ClientCached *cc = NULL;
		m_clientcached.get(name, &cc);
		if(cc)
			return cc;

		ITextureSource *tsrc = client->getTextureSource();
		const ItemDefinition &def = get(name);

		// Create new ClientCached
		cc = new ClientCached();

		// Create an inventory texture
		cc->inventory_texture = NULL;
		if (!def.inventory_image.empty())
			cc->inventory_texture = tsrc->getTexture(def.inventory_image);

		ItemStack item = ItemStack();
		item.name = def.name;

		getItemMesh(client, item, &(cc->wield_mesh));

		cc->palette = tsrc->getPalette(def.palette_image);

		// Put in cache
		m_clientcached.set(name, cc);

		return cc;
	}

	ClientCached* createClientCachedDirect(const std::string &name,
			IGameDef *gamedef) const
	{
		infostream<<"Lazily creating item texture and mesh for \""
				<<name<<"\""<<std::endl;

		// This is not thread-safe
		sanity_check(thr_is_current_thread(m_main_thread));

		// Skip if already in cache
		ClientCached *cc = NULL;
		m_clientcached.get(name, &cc);
		if(cc)
			return cc;

		ITextureSource *tsrc = gamedef->getTextureSource();
		const ItemDefinition &def = get(name);

		// Create new ClientCached
		cc = new ClientCached();

		// Create an inventory texture
		cc->inventory_texture = NULL;
		if(def.inventory_image != "")
			cc->inventory_texture = tsrc->getTexture(def.inventory_image);

		ItemStack item = ItemStack();
		item.name = def.name;

		scene::IMesh *mesh = getItemMesh(gamedef, item);
		cc->wield_mesh = mesh;

		// Put in cache
		m_clientcached.set(name, cc);

		return cc;
	}

void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
{
	ITextureSource *tsrc = client->getTextureSource();
	IItemDefManager *idef = client->getItemDefManager();
	const NodeDefManager *ndef = client->getNodeDefManager();
	const ItemDefinition &def = item.getDefinition(idef);
	const ContentFeatures &f = ndef->get(def.name);
	content_t id = ndef->getId(def.name);

	FATAL_ERROR_IF(!g_extrusion_mesh_cache, "Extrusion mesh cache is not yet initialized");
	
	scene::SMesh *mesh = nullptr;

	// Shading is on by default
	result->needs_shading = true;

	// If inventory_image is defined, it overrides everything else
	if (!def.inventory_image.empty()) {
		mesh = getExtrudedMesh(tsrc, def.inventory_image,
			def.inventory_overlay);
		result->buffer_colors.emplace_back();
		// overlay is white, if present
		result->buffer_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
		// Items with inventory images do not need shading
		result->needs_shading = false;
	} else if (def.type == ITEM_NODE) {
		if (f.mesh_ptr[0]) {
			mesh = cloneMesh(f.mesh_ptr[0]);
			scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
			postProcessNodeMesh(mesh, f, false, false, nullptr,
				&result->buffer_colors);
		} else {
			switch (f.drawtype) {
				case NDT_PLANTLIKE: {
					mesh = getExtrudedMesh(tsrc,
						tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
						tsrc->getTextureName(f.tiles[0].layers[1].texture_id));
					// Add color
					const TileLayer &l0 = f.tiles[0].layers[0];
					result->buffer_colors.emplace_back(l0.has_color, l0.color);
					const TileLayer &l1 = f.tiles[0].layers[1];
					result->buffer_colors.emplace_back(l1.has_color, l1.color);
					break;
				}
				case NDT_PLANTLIKE_ROOTED: {
					mesh = getExtrudedMesh(tsrc,
						tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id), "");
					// Add color
					const TileLayer &l0 = f.special_tiles[0].layers[0];
					result->buffer_colors.emplace_back(l0.has_color, l0.color);
					break;
				}
				case NDT_NORMAL:
				case NDT_ALLFACES:
				case NDT_LIQUID:
				case NDT_FLOWINGLIQUID: {
					scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
					mesh = cloneMesh(cube);
					cube->drop();
					scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
					// add overlays
					postProcessNodeMesh(mesh, f, false, false, nullptr,
						&result->buffer_colors);
					break;
				}
				default: {
					mesh = createSpecialNodeMesh(client, id, &result->buffer_colors);
					scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
				}
			}
		}

		u32 mc = mesh->getMeshBufferCount();
		for (u32 i = 0; i < mc; ++i) {
			scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
			video::SMaterial &material = buf->getMaterial();
			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
			material.setFlag(video::EMF_BILINEAR_FILTER, false);
			material.setFlag(video::EMF_TRILINEAR_FILTER, false);
			material.setFlag(video::EMF_BACK_FACE_CULLING, true);
			material.setFlag(video::EMF_LIGHTING, false);
		}

		rotateMeshXZby(mesh, -45);
		rotateMeshYZby(mesh, -30);
	}
	result->mesh = mesh;
}

void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
{
	ITextureSource *tsrc = client->getTextureSource();
	IItemDefManager *idef = client->getItemDefManager();
	IShaderSource *shdrsrc = client->getShaderSource();
	const NodeDefManager *ndef = client->getNodeDefManager();
	const ItemDefinition &def = item.getDefinition(idef);
	const ContentFeatures &f = ndef->get(def.name);
	content_t id = ndef->getId(def.name);

	scene::SMesh *mesh = nullptr;

	if (m_enable_shaders) {
		u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
		m_material_type = shdrsrc->getShaderInfo(shader_id).material;
	}

	// Color-related
	m_colors.clear();
	m_base_color = idef->getItemstackColor(item, client);

	// If wield_image is defined, it overrides everything else
	if (!def.wield_image.empty()) {
		setExtruded(def.wield_image, def.wield_overlay, def.wield_scale, tsrc,
			1);
		m_colors.emplace_back();
		// overlay is white, if present
		m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
		return;
	}

	// Handle nodes
	// See also CItemDefManager::createClientCached()
	if (def.type == ITEM_NODE) {
		if (f.mesh_ptr[0]) {
			// e.g. mesh nodes and nodeboxes
			mesh = cloneMesh(f.mesh_ptr[0]);
			postProcessNodeMesh(mesh, f, m_enable_shaders, true,
				&m_material_type, &m_colors);
			changeToMesh(mesh);
			mesh->drop();
			// mesh is pre-scaled by BS * f->visual_scale
			m_meshnode->setScale(
					def.wield_scale * WIELD_SCALE_FACTOR
					/ (BS * f.visual_scale));
		} else {
			switch (f.drawtype) {
				case NDT_AIRLIKE: {
					changeToMesh(nullptr);
					break;
				}
				case NDT_PLANTLIKE: {
					setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
						tsrc->getTextureName(f.tiles[0].layers[1].texture_id),
						def.wield_scale, tsrc,
						f.tiles[0].layers[0].animation_frame_count);
					// Add color
					const TileLayer &l0 = f.tiles[0].layers[0];
					m_colors.emplace_back(l0.has_color, l0.color);
					const TileLayer &l1 = f.tiles[0].layers[1];
					m_colors.emplace_back(l1.has_color, l1.color);
					break;
				}
				case NDT_PLANTLIKE_ROOTED: {
					setExtruded(tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id),
						"", def.wield_scale, tsrc,
						f.special_tiles[0].layers[0].animation_frame_count);
					// Add color
					const TileLayer &l0 = f.special_tiles[0].layers[0];
					m_colors.emplace_back(l0.has_color, l0.color);
					break;
				}
				case NDT_NORMAL:
				case NDT_ALLFACES:
				case NDT_LIQUID:
				case NDT_FLOWINGLIQUID: {
					setCube(f, def.wield_scale);
					break;
				}
				default: {
					mesh = createSpecialNodeMesh(client, id, &m_colors);
					changeToMesh(mesh);
					mesh->drop();
					m_meshnode->setScale(
							def.wield_scale * WIELD_SCALE_FACTOR
							/ (BS * f.visual_scale));
				}
			}
		}
		u32 material_count = m_meshnode->getMaterialCount();
		for (u32 i = 0; i < material_count; ++i) {
			video::SMaterial &material = m_meshnode->getMaterial(i);
			material.MaterialType = m_material_type;
			material.setFlag(video::EMF_BACK_FACE_CULLING, true);
			material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
			material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
		}
		return;
	}
	else if (!def.inventory_image.empty()) {
//.........这里部分代码省略.........

bool MapBlockMesh::animate(bool faraway, float time, int crack, u32 daynight_ratio)
{

	if(!m_has_animation)
	{
		m_animation_force_timer = 100000;
		return false;
	}

	m_animation_force_timer = myrand_range(5, 100);

	// Cracks
	if(crack != m_last_crack)
	{
		for(std::map<u32, std::string>::iterator
				i = m_crack_materials.begin();
				i != m_crack_materials.end(); i++)
		{
			scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
			std::string basename = i->second;

			// Create new texture name from original
			ITextureSource *tsrc = m_gamedef->getTextureSource();
			std::ostringstream os;
			os<<basename<<crack;
			u32 new_texture_id = 0;
			video::ITexture *new_texture =
				tsrc->getTexture(os.str(), &new_texture_id);
			buf->getMaterial().setTexture(0, new_texture);

			// If the current material is also animated,
			// update animation info
			std::map<u32, TileSpec>::iterator anim_iter =
				m_animation_tiles.find(i->first);
			if(anim_iter != m_animation_tiles.end()){
				TileSpec &tile = anim_iter->second;
				tile.texture = new_texture;
				tile.texture_id = new_texture_id;
				// force animation update
				m_animation_frames[i->first] = -1;
			}
		}

		m_last_crack = crack;
	}

	// Texture animation
	for(std::map<u32, TileSpec>::iterator
			i = m_animation_tiles.begin();
			i != m_animation_tiles.end(); i++)
	{
		const TileSpec &tile = i->second;
		// Figure out current frame
		int frameoffset = m_animation_frame_offsets[i->first];
		int frame = (int)(time * 1000 / tile.animation_frame_length_ms
				+ frameoffset) % (tile.animation_frame_count ? tile.animation_frame_count : 1);
		// If frame doesn't change, skip
		if(frame == m_animation_frames[i->first])
			continue;

		m_animation_frames[i->first] = frame;

		scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
		ITextureSource *tsrc = m_gamedef->getTextureSource();

		FrameSpec animation_frame = tile.frames.find(frame)->second;
		buf->getMaterial().setTexture(0, animation_frame.texture);
		if (m_enable_shaders) {
			if (animation_frame.normal_texture) {
				buf->getMaterial().setTexture(1, animation_frame.normal_texture);
				buf->getMaterial().setTexture(2, tsrc->getTexture("enable_img.png"));
			} else {
				buf->getMaterial().setTexture(2, tsrc->getTexture("disable_img.png"));
			}
		}
	}

	// Day-night transition
	if(!m_enable_shaders && (daynight_ratio != m_last_daynight_ratio))
	{
		for(std::map<u32, std::map<u32, std::pair<u8, u8> > >::iterator
				i = m_daynight_diffs.begin();
				i != m_daynight_diffs.end(); i++)
		{
			scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
			buf->setDirty(irr::scene::EBT_VERTEX);
			video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
			for(std::map<u32, std::pair<u8, u8 > >::iterator
					j = i->second.begin();
					j != i->second.end(); j++)
			{
				u32 vertexIndex = j->first;
				u8 day = j->second.first;
				u8 night = j->second.second;
				finalColorBlend(vertices[vertexIndex].Color,
						day, night, daynight_ratio);
			}
		}
		m_last_daynight_ratio = daynight_ratio;
	}
//.........这里部分代码省略.........

MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
	clearHardwareBuffer(false),
	step(data->step),
	timestamp(data->timestamp),
	m_mesh(new scene::SMesh()),
	m_gamedef(data->m_gamedef),
	m_animation_force_timer(0), // force initial animation
	m_last_crack(-1),
	m_crack_materials(),
	m_highlighted_materials(),
	m_last_daynight_ratio((u32) -1),
	m_daynight_diffs(),
	m_usage_timer(0)
{
	m_enable_shaders = g_settings->getBool("enable_shaders");
	m_enable_highlighting = g_settings->getBool("enable_node_highlighting");

	// 4-21ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
	// 24-155ms for MAP_BLOCKSIZE=32  (NOTE: probably outdated)
	//TimeTaker timer1("MapBlockMesh()");

	data->fill_data();

	std::vector<FastFace> fastfaces_new;

	/*
		We are including the faces of the trailing edges of the block.
		This means that when something changes, the caller must
		also update the meshes of the blocks at the leading edges.

		NOTE: This is the slowest part of this method.
	*/
	{
		// 4-23ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
		//TimeTaker timer2("updateAllFastFaceRows()");
		updateAllFastFaceRows(data, fastfaces_new, step);
	}
	// End of slow part

	//if (data->debug) infostream<<" step="<<step<<" fastfaces_new.size="<<fastfaces_new.size()<<std::endl;

	/*
		Convert FastFaces to MeshCollector
	*/

	MeshCollector collector;

	{
		// avg 0ms (100ms spikes when loading textures the first time)
		// (NOTE: probably outdated)
		//TimeTaker timer2("MeshCollector building");

		for(u32 i=0; i<fastfaces_new.size(); i++)
		{
			FastFace &f = fastfaces_new[i];

			const u16 indices[] = {0,1,2,2,3,0};
			const u16 indices_alternate[] = {0,1,3,2,3,1};

			if(f.tile.texture == NULL)
				continue;

			const u16 *indices_p = indices;

			/*
				Revert triangles for nicer looking gradient if vertices
				1 and 3 have same color or 0 and 2 have different color.
				getRed() is the day color.
			*/
			if(f.vertices[0].Color.getRed() != f.vertices[2].Color.getRed()
					|| f.vertices[1].Color.getRed() == f.vertices[3].Color.getRed())
				indices_p = indices_alternate;

			collector.append(f.tile, f.vertices, 4, indices_p, 6);
		}
	}

	/*
		Add special graphics:
		- torches
		- flowing water
		- fences
		- whatever
	*/

	if(step <= 1)
	mapblock_mesh_generate_special(data, collector);

	m_highlight_mesh_color = data->m_highlight_mesh_color;

	/*
		Convert MeshCollector to SMesh
	*/
	ITextureSource *tsrc = m_gamedef->tsrc();
	IShaderSource *shdrsrc = m_gamedef->getShaderSource();

	for(u32 i = 0; i < collector.prebuffers.size(); i++)
	{
		PreMeshBuffer &p = collector.prebuffers[i];

//.........这里部分代码省略.........

//.........这里部分代码省略.........

	/*
		Convert MeshCollector to SMesh
	*/
	bool enable_shaders     = g_settings->getBool("enable_shaders");
	bool enable_bumpmapping = g_settings->getBool("enable_bumpmapping");
	bool enable_parallax_occlusion = g_settings->getBool("enable_parallax_occlusion");

	video::E_MATERIAL_TYPE  shadermat1, shadermat2, shadermat3,
							shadermat4, shadermat5;
	shadermat1 = shadermat2 = shadermat3 = shadermat4 = shadermat5 = 
		video::EMT_SOLID;

	if (enable_shaders) {
		IShaderSource *shdrsrc = m_gamedef->getShaderSource();
		shadermat1 = shdrsrc->getShader("solids_shader").material;
		shadermat2 = shdrsrc->getShader("liquids_shader").material;
		shadermat3 = shdrsrc->getShader("alpha_shader").material;
		shadermat4 = shdrsrc->getShader("leaves_shader").material;
		shadermat5 = shdrsrc->getShader("plants_shader").material;
	}

	for(u32 i = 0; i < collector.prebuffers.size(); i++)
	{
		PreMeshBuffer &p = collector.prebuffers[i];
		/*dstream<<"p.vertices.size()="<<p.vertices.size()
				<<", p.indices.size()="<<p.indices.size()
				<<std::endl;*/

		// Generate animation data
		// - Cracks
		if(p.tile.material_flags & MATERIAL_FLAG_CRACK)
		{
			ITextureSource *tsrc = data->m_gamedef->tsrc();
			// Find the texture name plus ^[crack:N:
			std::ostringstream os(std::ios::binary);
			os<<tsrc->getTextureName(p.tile.texture_id)<<"^[crack";
			if(p.tile.material_flags & MATERIAL_FLAG_CRACK_OVERLAY)
				os<<"o";  // use ^[cracko
			os<<":"<<(u32)p.tile.animation_frame_count<<":";
			m_crack_materials.insert(std::make_pair(i, os.str()));
			// Replace tile texture with the cracked one
			p.tile.texture = tsrc->getTexture(
					os.str()+"0",
					&p.tile.texture_id);
		}
		// - Texture animation
		if(p.tile.material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
		{
			ITextureSource *tsrc = data->m_gamedef->tsrc();
			// Add to MapBlockMesh in order to animate these tiles
			m_animation_tiles[i] = p.tile;
			m_animation_frames[i] = 0;
			if(g_settings->getBool("desynchronize_mapblock_texture_animation")){
				// Get starting position from noise
				m_animation_frame_offsets[i] = 100000 * (2.0 + noise3d(
						data->m_blockpos.X, data->m_blockpos.Y,
						data->m_blockpos.Z, 0));
			} else {
				// Play all synchronized
				m_animation_frame_offsets[i] = 0;
			}
			// Replace tile texture with the first animation frame
			std::ostringstream os(std::ios::binary);
			os<<tsrc->getTextureName(p.tile.texture_id);
			os<<"^[verticalframe:"<<(int)p.tile.animation_frame_count<<":0";

bool MapBlockMesh::animate(bool faraway, float time, int crack, u32 daynight_ratio)
{
	if(!m_has_animation)
	{
		m_animation_force_timer = 100000;
		return false;
	}

	m_animation_force_timer = myrand_range(5, 100);

	// Cracks
	if(crack != m_last_crack)
	{
		for(std::map<u32, std::string>::iterator
				i = m_crack_materials.begin();
				i != m_crack_materials.end(); i++)
		{
			scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
			std::string basename = i->second;

			// Create new texture name from original
			ITextureSource *tsrc = m_gamedef->getTextureSource();
			std::ostringstream os;
			os<<basename<<crack;
			AtlasPointer ap = tsrc->getTexture(os.str());
			buf->getMaterial().setTexture(0, ap.atlas);
		}

		m_last_crack = crack;
	}
	
	// Texture animation
	for(std::map<u32, TileSpec>::iterator
			i = m_animation_tiles.begin();
			i != m_animation_tiles.end(); i++)
	{
		const TileSpec &tile = i->second;
		// Figure out current frame
		int frameoffset = m_animation_frame_offsets[i->first];
		int frame = (int)(time * 1000 / tile.animation_frame_length_ms
				+ frameoffset) % tile.animation_frame_count;
		// If frame doesn't change, skip
		if(frame == m_animation_frames[i->first])
			continue;

		m_animation_frames[i->first] = frame;

		scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
		ITextureSource *tsrc = m_gamedef->getTextureSource();

		// Create new texture name from original
		std::ostringstream os(std::ios::binary);
		os<<tsrc->getTextureName(tile.texture.id);
		os<<"^[verticalframe:"<<(int)tile.animation_frame_count<<":"<<frame;
		// Set the texture
		AtlasPointer ap = tsrc->getTexture(os.str());
		buf->getMaterial().setTexture(0, ap.atlas);
	}

	// Day-night transition
	if(daynight_ratio != m_last_daynight_ratio)
	{
		for(std::map<u32, std::map<u32, std::pair<u8, u8> > >::iterator
				i = m_daynight_diffs.begin();
				i != m_daynight_diffs.end(); i++)
		{
			scene::IMeshBuffer *buf = m_mesh->getMeshBuffer(i->first);
			video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
			for(std::map<u32, std::pair<u8, u8 > >::iterator
					j = i->second.begin();
					j != i->second.end(); j++)
			{
				u32 vertexIndex = j->first;
				u8 day = j->second.first;
				u8 night = j->second.second;
				finalColorBlend(vertices[vertexIndex].Color,
						day, night, daynight_ratio);
				// Brighten topside (no shaders)
				if(vertices[vertexIndex].Normal.Y > 0.5)
				{
					video::SColor &vc = vertices[vertexIndex].Color;
					vc.setRed  (srgb_linear_multiply(vc.getRed(),   1.3, 255.0));
					vc.setGreen(srgb_linear_multiply(vc.getGreen(), 1.3, 255.0));
					vc.setBlue (srgb_linear_multiply(vc.getBlue(),  1.3, 255.0));
				}
			}
		}
		m_last_daynight_ratio = daynight_ratio;
	}

	return true;
}

	ClientCached* createClientCachedDirect(const std::string &name,
			IGameDef *gamedef) const
	{
		infostream<<"Lazily creating item texture and mesh for \""
				<<name<<"\""<<std::endl;

		// This is not thread-safe
		sanity_check(get_current_thread_id() == m_main_thread);

		// Skip if already in cache
		ClientCached *cc = NULL;
		m_clientcached.get(name, &cc);
		if(cc)
			return cc;

		ITextureSource *tsrc = gamedef->getTextureSource();
		INodeDefManager *nodedef = gamedef->getNodeDefManager();
		const ItemDefinition &def = get(name);

		// Create new ClientCached
		cc = new ClientCached();

		// Create an inventory texture
		cc->inventory_texture = NULL;
		if(def.inventory_image != "")
			cc->inventory_texture = tsrc->getTexture(def.inventory_image);

		// Additional processing for nodes:
		// - Create a wield mesh if WieldMeshSceneNode can't render
		//   the node on its own.
		// - If inventory_texture isn't set yet, create one using
		//   render-to-texture.
		if (def.type == ITEM_NODE) {
			// Get node properties
			content_t id = nodedef->getId(name);
			const ContentFeatures &f = nodedef->get(id);

			bool need_rtt_mesh = cc->inventory_texture == NULL;

			// Keep this in sync with WieldMeshSceneNode::setItem()
			bool need_wield_mesh =
				!(f.mesh_ptr[0] ||
				  f.drawtype == NDT_NORMAL ||
				  f.drawtype == NDT_ALLFACES ||
				  f.drawtype == NDT_AIRLIKE);

			scene::IMesh *node_mesh = NULL;

			if (need_rtt_mesh || need_wield_mesh) {
				u8 param1 = 0;
				if (f.param_type == CPT_LIGHT)
					param1 = 0xee;

				/*
					Make a mesh from the node
				*/
				MeshMakeData mesh_make_data(gamedef, false);
				u8 param2 = 0;
				if (f.param_type_2 == CPT2_WALLMOUNTED)
					param2 = 1;
				MapNode mesh_make_node(id, param1, param2);
				mesh_make_data.fillSingleNode(&mesh_make_node);
				MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
				node_mesh = mapblock_mesh.getMesh();
				node_mesh->grab();
				video::SColor c(255, 255, 255, 255);
				setMeshColor(node_mesh, c);

				// scale and translate the mesh so it's a
				// unit cube centered on the origin
				scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
				translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));
			}

			/*
				Draw node mesh into a render target texture
			*/
			if (need_rtt_mesh) {
				TextureFromMeshParams params;
				params.mesh = node_mesh;
				params.dim.set(64, 64);
				params.rtt_texture_name = "INVENTORY_"
					+ def.name + "_RTT";
				params.delete_texture_on_shutdown = true;
				params.camera_position.set(0, 1.0, -1.5);
				params.camera_position.rotateXZBy(45);
				params.camera_lookat.set(0, 0, 0);
				// Set orthogonal projection
				params.camera_projection_matrix.buildProjectionMatrixOrthoLH(
						1.65, 1.65, 0, 100);
				params.ambient_light.set(1.0, 0.2, 0.2, 0.2);
				params.light_position.set(10, 100, -50);
				params.light_color.set(1.0, 0.5, 0.5, 0.5);
				params.light_radius = 1000;

#ifdef __ANDROID__
				params.camera_position.set(0, -1.0, -1.5);
				params.camera_position.rotateXZBy(45);
				params.light_position.set(10, -100, -50);
#endif
//.........这里部分代码省略.........

	virtual void updateTexturesAndMeshes(IGameDef *gamedef)
	{
#ifndef SERVER
		infostream<<"ItemDefManager::updateTexturesAndMeshes(): Updating "
				<<"textures and meshes in item definitions"<<std::endl;

		ITextureSource *tsrc = gamedef->getTextureSource();
		INodeDefManager *nodedef = gamedef->getNodeDefManager();
		IrrlichtDevice *device = tsrc->getDevice();
		video::IVideoDriver *driver = device->getVideoDriver();

		for(std::map<std::string, ItemDefinition*>::iterator
				i = m_item_definitions.begin();
				i != m_item_definitions.end(); i++)
		{
			ItemDefinition *def = i->second;

			bool need_node_mesh = false;

			// Create an inventory texture
			def->inventory_texture = NULL;
			if(def->inventory_image != "")
			{
				def->inventory_texture = tsrc->getTextureRaw(def->inventory_image);
			}
			else if(def->type == ITEM_NODE)
			{
				need_node_mesh = true;
			}

			// Create a wield mesh
			if(def->wield_mesh != NULL)
			{
				def->wield_mesh->drop();
				def->wield_mesh = NULL;
			}
			if(def->type == ITEM_NODE && def->wield_image == "")
			{
				need_node_mesh = true;
			}
			else if(def->wield_image != "" || def->inventory_image != "")
			{
				// Extrude the wield image into a mesh

				std::string imagename;
				if(def->wield_image != "")
					imagename = def->wield_image;
				else
					imagename = def->inventory_image;

				def->wield_mesh = createExtrudedMesh(
						tsrc->getTextureRaw(imagename),
						driver,
						def->wield_scale * v3f(40.0, 40.0, 4.0));
				if(def->wield_mesh == NULL)
				{
					infostream<<"ItemDefManager: WARNING: "
						<<"updateTexturesAndMeshes(): "
						<<"Unable to create extruded mesh for item "
						<<def->name<<std::endl;
				}
			}

			if(need_node_mesh)
			{
				/*
					Get node properties
				*/
				content_t id = nodedef->getId(def->name);
				const ContentFeatures &f = nodedef->get(id);

				u8 param1 = 0;
				if(f.param_type == CPT_LIGHT)
					param1 = 0xee;

				/*
				 	Make a mesh from the node
				*/
				MeshMakeData mesh_make_data(gamedef);
				MapNode mesh_make_node(id, param1, 0);
				mesh_make_data.fillSingleNode(&mesh_make_node);
				MapBlockMesh mapblock_mesh(&mesh_make_data);

				scene::IMesh *node_mesh = mapblock_mesh.getMesh();
				assert(node_mesh);
				setMeshColor(node_mesh, video::SColor(255, 255, 255, 255));

				/*
					Scale and translate the mesh so it's a unit cube
					centered on the origin
				*/
				scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
				translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));

				/*
					Draw node mesh into a render target texture
				*/
				if(def->inventory_texture == NULL)
				{
					core::dimension2d<u32> dim(64,64);
//.........这里部分代码省略.........

void WieldMeshSceneNode::setItem(const ItemStack &item, IGameDef *gamedef)
{
	ITextureSource *tsrc = gamedef->getTextureSource();
	IItemDefManager *idef = gamedef->getItemDefManager();
	//IShaderSource *shdrsrc = gamedef->getShaderSource();
	INodeDefManager *ndef = gamedef->getNodeDefManager();
	const ItemDefinition &def = item.getDefinition(idef);
	const ContentFeatures &f = ndef->get(def.name);
	content_t id = ndef->getId(def.name);

#if 0
//// TODO(RealBadAngel): Reactivate when shader is added for wield items
	if (m_enable_shaders) {
		u32 shader_id = shdrsrc->getShader("nodes_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
		m_material_type = shdrsrc->getShaderInfo(shader_id).material;
	}
#endif

	// If wield_image is defined, it overrides everything else
	if (def.wield_image != "") {
		setExtruded(def.wield_image, def.wield_scale, tsrc, 1);
		return;
	}
	// Handle nodes
	// See also CItemDefManager::createClientCached()
	else if (def.type == ITEM_NODE) {
		if (f.mesh_ptr[0]) {
			// e.g. mesh nodes and nodeboxes
			changeToMesh(f.mesh_ptr[0]);
			// mesh_ptr[0] is pre-scaled by BS * f->visual_scale
			m_meshnode->setScale(
					def.wield_scale * WIELD_SCALE_FACTOR
					/ (BS * f.visual_scale));
		} else if (f.drawtype == NDT_AIRLIKE) {
			changeToMesh(NULL);
		} else if (f.drawtype == NDT_PLANTLIKE) {
			setExtruded(tsrc->getTextureName(f.tiles[0].texture_id), def.wield_scale, tsrc, f.tiles[0].animation_frame_count);
		} else if (f.drawtype == NDT_NORMAL || f.drawtype == NDT_ALLFACES) {
			setCube(f.tiles, def.wield_scale, tsrc);
		} else {
			//// TODO: Change false in the following constructor args to
			//// appropriate value when shader is added for wield items (if applicable)
			MeshMakeData mesh_make_data(gamedef, false);
			MapNode mesh_make_node(id, 255, 0);
			mesh_make_data.fillSingleNode(&mesh_make_node);
			MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
			changeToMesh(mapblock_mesh.getMesh());
			translateMesh(m_meshnode->getMesh(), v3f(-BS, -BS, -BS));
			m_meshnode->setScale(
					def.wield_scale * WIELD_SCALE_FACTOR
					/ (BS * f.visual_scale));
		}
		u32 material_count = m_meshnode->getMaterialCount();
		if (material_count > 6) {
			errorstream << "WieldMeshSceneNode::setItem: Invalid material "
				"count " << material_count << ", truncating to 6" << std::endl;
			material_count = 6;
		}
		for (u32 i = 0; i < material_count; ++i) {
			video::SMaterial &material = m_meshnode->getMaterial(i);
			material.setFlag(video::EMF_BACK_FACE_CULLING, true);
			material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
			material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
			bool animated = (f.tiles[i].animation_frame_count > 1);
			if (animated) {
				FrameSpec animation_frame = f.tiles[i].frames[0];
				material.setTexture(0, animation_frame.texture);
			} else {
				material.setTexture(0, f.tiles[i].texture);
			}
			material.MaterialType = m_material_type;
#if 0
//// TODO(RealBadAngel): Reactivate when shader is added for wield items
			if (m_enable_shaders) {
				if (f.tiles[i].normal_texture) {
					if (animated) {
						FrameSpec animation_frame = f.tiles[i].frames[0];
						material.setTexture(1, animation_frame.normal_texture);
					} else {
						material.setTexture(1, f.tiles[i].normal_texture);
					}
					material.setTexture(2, tsrc->getTexture("enable_img.png"));
				} else {
					material.setTexture(2, tsrc->getTexture("disable_img.png"));
				}
			}
#endif
		}
		return;
	}
	else if (def.inventory_image != "") {
		setExtruded(def.inventory_image, def.wield_scale, tsrc, 1);
		return;
	}

	// no wield mesh found
	changeToMesh(NULL);
}

MapBlockMesh::MapBlockMesh(MeshMakeData *data):
	m_mesh(new scene::SMesh()),
	m_gamedef(data->m_gamedef),
	m_animation_force_timer(0), // force initial animation
	m_last_crack(-1),
	m_crack_materials(),
	m_last_daynight_ratio((u32) -1),
	m_daynight_diffs()
{
	// 4-21ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
	// 24-155ms for MAP_BLOCKSIZE=32  (NOTE: probably outdated)
	//TimeTaker timer1("MapBlockMesh()");

	core::array<FastFace> fastfaces_new;

	/*
		We are including the faces of the trailing edges of the block.
		This means that when something changes, the caller must
		also update the meshes of the blocks at the leading edges.

		NOTE: This is the slowest part of this method.
	*/
	{
		// 4-23ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
		//TimeTaker timer2("updateAllFastFaceRows()");
		updateAllFastFaceRows(data, fastfaces_new);
	}
	// End of slow part

	/*
		Convert FastFaces to MeshCollector
	*/

	MeshCollector collector;

	{
		// avg 0ms (100ms spikes when loading textures the first time)
		// (NOTE: probably outdated)
		//TimeTaker timer2("MeshCollector building");

		for(u32 i=0; i<fastfaces_new.size(); i++)
		{
			FastFace &f = fastfaces_new[i];

			const u16 indices[] = {0,1,2,2,3,0};
			const u16 indices_alternate[] = {0,1,3,2,3,1};
			
			if(f.tile.texture.atlas == NULL)
				continue;

			const u16 *indices_p = indices;
			
			/*
				Revert triangles for nicer looking gradient if vertices
				1 and 3 have same color or 0 and 2 have different color.
				getRed() is the day color.
			*/
			if(f.vertices[0].Color.getRed() != f.vertices[2].Color.getRed()
					|| f.vertices[1].Color.getRed() == f.vertices[3].Color.getRed())
				indices_p = indices_alternate;
			
			collector.append(f.tile, f.vertices, 4, indices_p, 6);
		}
	}

	/*
		Add special graphics:
		- torches
		- flowing water
		- fences
		- whatever
	*/

	mapblock_mesh_generate_special(data, collector);
	

	/*
		Convert MeshCollector to SMesh
		Also store animation info
	*/
	for(u32 i = 0; i < collector.prebuffers.size(); i++)
	{
		PreMeshBuffer &p = collector.prebuffers[i];
		/*dstream<<"p.vertices.size()="<<p.vertices.size()
				<<", p.indices.size()="<<p.indices.size()
				<<std::endl;*/

		// Generate animation data
		// - Cracks
		if(p.tile.material_flags & MATERIAL_FLAG_CRACK)
		{
			ITextureSource *tsrc = data->m_gamedef->tsrc();
			std::string crack_basename = tsrc->getTextureName(p.tile.texture.id);
			if(p.tile.material_flags & MATERIAL_FLAG_CRACK_OVERLAY)
				crack_basename += "^[cracko";
			else
				crack_basename += "^[crack";
			m_crack_materials.insert(std::make_pair(i, crack_basename));
		}
		// - Lighting
//.........这里部分代码省略.........

    ClientCached* createClientCachedDirect(const std::string &name,
                                           IGameDef *gamedef) const
    {
        infostream<<"Lazily creating item texture and mesh for \""
                  <<name<<"\""<<std::endl;

        // This is not thread-safe
        assert(get_current_thread_id() == m_main_thread);

        // Skip if already in cache
        ClientCached *cc = NULL;
        m_clientcached.get(name, &cc);
        if(cc)
            return cc;

        ITextureSource *tsrc = gamedef->getTextureSource();
        INodeDefManager *nodedef = gamedef->getNodeDefManager();
        IrrlichtDevice *device = tsrc->getDevice();
        video::IVideoDriver *driver = device->getVideoDriver();
        const ItemDefinition *def = &get(name);

        // Create new ClientCached
        cc = new ClientCached();

        bool need_node_mesh = false;

        // Create an inventory texture
        cc->inventory_texture = NULL;
        if(def->inventory_image != "")
        {
            cc->inventory_texture = tsrc->getTextureRaw(def->inventory_image);
        }
        else if(def->type == ITEM_NODE)
        {
            need_node_mesh = true;
        }

        // Create a wield mesh
        assert(cc->wield_mesh == NULL);
        if(def->type == ITEM_NODE && def->wield_image == "")
        {
            need_node_mesh = true;
        }
        else if(def->wield_image != "" || def->inventory_image != "")
        {
            // Extrude the wield image into a mesh

            std::string imagename;
            if(def->wield_image != "")
                imagename = def->wield_image;
            else
                imagename = def->inventory_image;

            cc->wield_mesh = createExtrudedMesh(
                                 tsrc->getTextureRaw(imagename),
                                 driver,
                                 def->wield_scale * v3f(40.0, 40.0, 4.0));
            if(cc->wield_mesh == NULL)
            {
                infostream<<"ItemDefManager: WARNING: "
                          <<"updateTexturesAndMeshes(): "
                          <<"Unable to create extruded mesh for item "
                          <<def->name<<std::endl;
            }
        }

        if(need_node_mesh)
        {
            /*
            	Get node properties
            */
            content_t id = nodedef->getId(def->name);
            const ContentFeatures &f = nodedef->get(id);

            u8 param1 = 0;
            if(f.param_type == CPT_LIGHT)
                param1 = 0xee;

            /*
            	Make a mesh from the node
            */
            MeshMakeData mesh_make_data(gamedef);
            MapNode mesh_make_node(id, param1, 0);
            mesh_make_data.fillSingleNode(&mesh_make_node);
            MapBlockMesh mapblock_mesh(&mesh_make_data);

            scene::IMesh *node_mesh = mapblock_mesh.getMesh();
            assert(node_mesh);
            video::SColor c(255, 255, 255, 255);
            if(g_settings->getS32("enable_shaders") != 0)
                c = MapBlock_LightColor(255, 0xffff, decode_light(f.light_source));
            setMeshColor(node_mesh, c);

            /*
            	Scale and translate the mesh so it's a unit cube
            	centered on the origin
            */
            scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
            translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));

//.........这里部分代码省略.........