C++ MeshCollector::append方法代码示例

MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
	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	// 4-21ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
	// 24-155ms for MAP_BLOCKSIZE=32  (NOTE: probably outdated)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()");

	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		// 4-23ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)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);
	}
	// 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		// (NOTE: probably outdated)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 == 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
	*/
	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];
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	if(fastfaces_new.size() > 0)
	{
		// avg 0ms (100ms spikes when loading textures the first time)
		//TimeTaker timer2("updateMesh() mesh building");

		video::SMaterial material;
		material.setFlag(video::EMF_LIGHTING, false);
		material.setFlag(video::EMF_BILINEAR_FILTER, false);
		material.setFlag(video::EMF_FOG_ENABLE, true);
		//material.setFlag(video::EMF_ANTI_ALIASING, video::EAAM_OFF);
		//material.setFlag(video::EMF_ANTI_ALIASING, video::EAAM_SIMPLE);

		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};
			
			video::ITexture *texture = f.tile.texture.atlas;
			if(texture == NULL)
				continue;

			material.setTexture(0, texture);
			
			f.tile.applyMaterialOptions(material);

			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.
			*/
			if(f.vertices[0].Color != f.vertices[2].Color
					|| f.vertices[1].Color == f.vertices[3].Color)
				indices_p = indices_alternate;
			
			collector.append(material, f.vertices, 4, indices_p, 6);
		}
	}

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

	mapblock_mesh_generate_special(data, collector);
	
	/*
		Add stuff from collector to mesh
	*/
	
	scene::SMesh *mesh_new = NULL;
	mesh_new = new scene::SMesh();
	
	collector.fillMesh(mesh_new);

	/*
		Do some stuff to the mesh
	*/

	mesh_new->recalculateBoundingBox();

	/*
		Delete new mesh if it is empty
	*/

	if(mesh_new->getMeshBufferCount() == 0)
	{
		mesh_new->drop();
		mesh_new = NULL;
	}

	if(mesh_new)
	{
#if 0
		// Usually 1-700 faces and 1-7 materials
		std::cout<<"Updated MapBlock has "<<fastfaces_new.size()<<" faces "
				<<"and uses "<<mesh_new->getMeshBufferCount()
				<<" materials (meshbuffers)"<<std::endl;
#endif

		// Use VBO for mesh (this just would set this for ever buffer)
		// This will lead to infinite memory usage because or irrlicht.
		//mesh_new->setHardwareMappingHint(scene::EHM_STATIC);

		/*
			NOTE: If that is enabled, some kind of a queue to the main
			thread should be made which would call irrlicht to delete
			the hardware buffer and then delete the mesh
		*/
	}

	return mesh_new;
	
	//std::cout<<"added "<<fastfaces.getSize()<<" faces."<<std::endl;
}

void mapblock_mesh_generate_special(MeshMakeData *data,
		MeshCollector &collector)
{
	INodeDefManager *nodedef = data->m_gamedef->ndef();

	// 0ms
	//TimeTaker timer("mapblock_mesh_generate_special()");

	/*
		Some settings
	*/
	bool new_style_water = g_settings->getBool("new_style_water");
	
	float node_liquid_level = 1.0;
	if(new_style_water)
		node_liquid_level = 0.85;
	
	v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;

	for(s16 z=0; z<MAP_BLOCKSIZE; z++)
	for(s16 y=0; y<MAP_BLOCKSIZE; y++)
	for(s16 x=0; x<MAP_BLOCKSIZE; x++)
	{
		v3s16 p(x,y,z);

		MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
		const ContentFeatures &f = nodedef->get(n);

		// Only solidness=0 stuff is drawn here
		if(f.solidness != 0)
			continue;
		
		switch(f.drawtype){
		default:
			infostream<<"Got "<<f.drawtype<<std::endl;
			assert(0);
			break;
		case NDT_AIRLIKE:
			break;
		case NDT_LIQUID:
		{
			/*
				Add water sources to mesh if using new style
			*/
			TileSpec tile_liquid = f.special_tiles[0];
			AtlasPointer &pa_liquid = tile_liquid.texture;

			bool top_is_air = false;
			MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
			if(n.getContent() == CONTENT_AIR)
				top_is_air = true;
			
			if(top_is_air == false)
				continue;

			u16 l = getInteriorLight(n, 0, data);
			video::SColor c = MapBlock_LightColor(f.alpha, l);
			
			video::S3DVertex vertices[4] =
			{
				video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
						pa_liquid.x0(), pa_liquid.y1()),
				video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
						pa_liquid.x1(), pa_liquid.y1()),
				video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
						pa_liquid.x1(), pa_liquid.y0()),
				video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
						pa_liquid.x0(), pa_liquid.y0()),
			};

			v3f offset(p.X, p.Y + (-0.5+node_liquid_level)*BS, p.Z);
			for(s32 i=0; i<4; i++)
			{
				vertices[i].Pos += offset;
			}

			u16 indices[] = {0,1,2,2,3,0};
			// Add to mesh collector
			collector.append(tile_liquid, vertices, 4, indices, 6);
		break;}
		case NDT_FLOWINGLIQUID:
		{
			/*
				Add flowing liquid to mesh
			*/
			TileSpec tile_liquid = f.special_tiles[0];
			TileSpec tile_liquid_bfculled = f.special_tiles[1];
			AtlasPointer &pa_liquid = tile_liquid.texture;

			bool top_is_same_liquid = false;
			MapNode ntop = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
			content_t c_flowing = nodedef->getId(f.liquid_alternative_flowing);
			content_t c_source = nodedef->getId(f.liquid_alternative_source);
			if(ntop.getContent() == c_flowing || ntop.getContent() == c_source)
				top_is_same_liquid = true;
			
			u16 l = 0;
			// If this liquid emits light and doesn't contain light, draw
			// it at what it emits, for an increased effect
			u8 light_source = nodedef->get(n).light_source;
//.........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.........

MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
	m_mesh(new scene::SMesh()),
	m_minimap_mapblock(NULL),
	m_gamedef(data->m_gamedef),
	m_tsrc(m_gamedef->getTextureSource()),
	m_shdrsrc(m_gamedef->getShaderSource()),
	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_enable_shaders = data->m_use_shaders;
	m_enable_highlighting = g_settings->getBool("enable_node_highlighting");

	if (g_settings->getBool("enable_minimap")) {
		m_minimap_mapblock = new MinimapMapblock;
		m_minimap_mapblock->getMinimapNodes(
			&data->m_vmanip, data->m_blockpos * MAP_BLOCKSIZE);
	}

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

	std::vector<FastFace> fastfaces_new;
	fastfaces_new.reserve(512);

	/*
		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 == 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);

	m_highlight_mesh_color = data->m_highlight_mesh_color;

	/*
		Convert MeshCollector to SMesh
	*/

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

		// Generate animation data
//.........这里部分代码省略.........

//.........这里部分代码省略.........
				if(dir == v3s16(0,-1,0))
					vertices[i].Pos.rotateXZBy(45);
				if(dir == v3s16(0,1,0))
					vertices[i].Pos.rotateXZBy(-45);

				vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
			}

			// Set material
			video::SMaterial material;
			material.setFlag(video::EMF_LIGHTING, false);
			material.setFlag(video::EMF_BACK_FACE_CULLING, false);
			material.setFlag(video::EMF_BILINEAR_FILTER, false);
			//material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
			material.MaterialType
					= video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;

			if(dir == v3s16(0,-1,0))
				material.setTexture(0,
						g_texturesource->getTextureRaw("torch_on_floor.png"));
			else if(dir == v3s16(0,1,0))
				material.setTexture(0,
						g_texturesource->getTextureRaw("torch_on_ceiling.png"));
			// For backwards compatibility
			else if(dir == v3s16(0,0,0))
				material.setTexture(0,
						g_texturesource->getTextureRaw("torch_on_floor.png"));
			else
				material.setTexture(0, 
						g_texturesource->getTextureRaw("torch.png"));

			u16 indices[] = {0,1,2,2,3,0};
			// Add to mesh collector
			collector.append(material, vertices, 4, indices, 6);
		}
		/*
			Signs on walls
		*/
		else if(n.d == CONTENT_SIGN_WALL)
		{
			u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio));
			video::SColor c(255,l,l,l);
				
			float d = (float)BS/16;
			// Wall at X+ of node
			video::S3DVertex vertices[4] =
			{
				video::S3DVertex(BS/2-d,-BS/2,-BS/2, 0,0,0, c, 0,1),
				video::S3DVertex(BS/2-d,-BS/2,BS/2, 0,0,0, c, 1,1),
				video::S3DVertex(BS/2-d,BS/2,BS/2, 0,0,0, c, 1,0),
				video::S3DVertex(BS/2-d,BS/2,-BS/2, 0,0,0, c, 0,0),
			};

			v3s16 dir = unpackDir(n.dir);

			for(s32 i=0; i<4; i++)
			{
				if(dir == v3s16(1,0,0))
					vertices[i].Pos.rotateXZBy(0);
				if(dir == v3s16(-1,0,0))
					vertices[i].Pos.rotateXZBy(180);
				if(dir == v3s16(0,0,1))
					vertices[i].Pos.rotateXZBy(90);
				if(dir == v3s16(0,0,-1))
					vertices[i].Pos.rotateXZBy(-90);
				if(dir == v3s16(0,-1,0))

void mapblock_mesh_generate_special(MeshMakeData *data,
		MeshCollector &collector, IGameDef *gamedef)
{
	INodeDefManager *nodedef = gamedef->ndef();

	// 0ms
	//TimeTaker timer("mapblock_mesh_generate_special()");

	/*
		Some settings
	*/
	bool new_style_water = g_settings->getBool("new_style_water");
	
	float node_liquid_level = 1.0;
	if(new_style_water)
		node_liquid_level = 0.85;
	
	v3s16 blockpos_nodes = data->m_blockpos*MAP_BLOCKSIZE;

	/*// General ground material for special output
	// Texture is modified just before usage
	video::SMaterial material_general;
	material_general.setFlag(video::EMF_LIGHTING, false);
	material_general.setFlag(video::EMF_BILINEAR_FILTER, false);
	material_general.setFlag(video::EMF_FOG_ENABLE, true);
	material_general.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;*/

	for(s16 z=0; z<MAP_BLOCKSIZE; z++)
	for(s16 y=0; y<MAP_BLOCKSIZE; y++)
	for(s16 x=0; x<MAP_BLOCKSIZE; x++)
	{
		v3s16 p(x,y,z);

		MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes+p);
		const ContentFeatures &f = nodedef->get(n);

		// Only solidness=0 stuff is drawn here
		if(f.solidness != 0)
			continue;
		
		switch(f.drawtype){
		default:
			infostream<<"Got "<<f.drawtype<<std::endl;
			assert(0);
			break;
		case NDT_AIRLIKE:
			break;
		case NDT_LIQUID:
		{
			/*
				Add water sources to mesh if using new style
			*/
			assert(nodedef->get(n).special_materials[0]);
			//assert(nodedef->get(n).special_materials[1]);
			assert(nodedef->get(n).special_aps[0]);

			video::SMaterial &liquid_material =
					*nodedef->get(n).special_materials[0];
			/*video::SMaterial &liquid_material_bfculled =
					*nodedef->get(n).special_materials[1];*/
			AtlasPointer &pa_liquid1 =
					*nodedef->get(n).special_aps[0];

			bool top_is_air = false;
			MapNode n = data->m_vmanip.getNodeNoEx(blockpos_nodes + v3s16(x,y+1,z));
			if(n.getContent() == CONTENT_AIR)
				top_is_air = true;
			
			if(top_is_air == false)
				continue;

			u8 l = decode_light(n.getLightBlend(data->m_daynight_ratio, nodedef));
			video::SColor c = MapBlock_LightColor(
					nodedef->get(n).alpha, l);
			
			video::S3DVertex vertices[4] =
			{
				video::S3DVertex(-BS/2,0,BS/2, 0,0,0, c,
						pa_liquid1.x0(), pa_liquid1.y1()),
				video::S3DVertex(BS/2,0,BS/2, 0,0,0, c,
						pa_liquid1.x1(), pa_liquid1.y1()),
				video::S3DVertex(BS/2,0,-BS/2, 0,0,0, c,
						pa_liquid1.x1(), pa_liquid1.y0()),
				video::S3DVertex(-BS/2,0,-BS/2, 0,0,0, c,
						pa_liquid1.x0(), pa_liquid1.y0()),
			};

			for(s32 i=0; i<4; i++)
			{
				vertices[i].Pos.Y += (-0.5+node_liquid_level)*BS;
				vertices[i].Pos += intToFloat(p + blockpos_nodes, BS);
			}

			u16 indices[] = {0,1,2,2,3,0};
			// Add to mesh collector
			collector.append(liquid_material, vertices, 4, indices, 6);
		break;}
		case NDT_FLOWINGLIQUID:
		{
			/*
//.........这里部分代码省略.........

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.........