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+/*
+Minetest-c55
+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
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef MAPBLOCK_MESH_HEADER
+#define MAPBLOCK_MESH_HEADER
+
+#include "common_irrlicht.h"
+#include "mapblock_nodemod.h"
+#include "voxel.h"
+
+/*
+ Mesh making stuff
+*/
+
+/*
+ This is used because CMeshBuffer::append() is very slow
+*/
+struct PreMeshBuffer
+{
+ video::SMaterial material;
+ core::array<u16> indices;
+ core::array<video::S3DVertex> vertices;
+};
+
+class MeshCollector
+{
+public:
+ void append(
+ video::SMaterial material,
+ const video::S3DVertex* const vertices,
+ u32 numVertices,
+ const u16* const indices,
+ u32 numIndices
+ )
+ {
+ PreMeshBuffer *p = NULL;
+ for(u32 i=0; i<m_prebuffers.size(); i++)
+ {
+ PreMeshBuffer &pp = m_prebuffers[i];
+ if(pp.material != material)
+ continue;
+
+ p = &pp;
+ break;
+ }
+
+ if(p == NULL)
+ {
+ PreMeshBuffer pp;
+ pp.material = material;
+ m_prebuffers.push_back(pp);
+ p = &m_prebuffers[m_prebuffers.size()-1];
+ }
+
+ u32 vertex_count = p->vertices.size();
+ for(u32 i=0; i<numIndices; i++)
+ {
+ u32 j = indices[i] + vertex_count;
+ if(j > 65535)
+ {
+ dstream<<"FIXME: Meshbuffer ran out of indices"<<std::endl;
+ // NOTE: Fix is to just add an another MeshBuffer
+ }
+ p->indices.push_back(j);
+ }
+ for(u32 i=0; i<numVertices; i++)
+ {
+ p->vertices.push_back(vertices[i]);
+ }
+ }
+
+ void fillMesh(scene::SMesh *mesh)
+ {
+ /*dstream<<"Filling mesh with "<<m_prebuffers.size()
+ <<" meshbuffers"<<std::endl;*/
+ for(u32 i=0; i<m_prebuffers.size(); i++)
+ {
+ PreMeshBuffer &p = m_prebuffers[i];
+
+ /*dstream<<"p.vertices.size()="<<p.vertices.size()
+ <<", p.indices.size()="<<p.indices.size()
+ <<std::endl;*/
+
+ // Create meshbuffer
+
+ // This is a "Standard MeshBuffer",
+ // it's a typedeffed CMeshBuffer<video::S3DVertex>
+ scene::SMeshBuffer *buf = new scene::SMeshBuffer();
+ // Set material
+ buf->Material = p.material;
+ //((scene::SMeshBuffer*)buf)->Material = p.material;
+ // Use VBO
+ //buf->setHardwareMappingHint(scene::EHM_STATIC);
+ // Add to mesh
+ mesh->addMeshBuffer(buf);
+ // Mesh grabbed it
+ buf->drop();
+
+ buf->append(p.vertices.pointer(), p.vertices.size(),
+ p.indices.pointer(), p.indices.size());
+ }
+ }
+
+private:
+ core::array<PreMeshBuffer> m_prebuffers;
+};
+
+class MapBlock;
+
+struct MeshMakeData
+{
+ u32 m_daynight_ratio;
+ NodeModMap m_temp_mods;
+ VoxelManipulator m_vmanip;
+ v3s16 m_blockpos;
+
+ /*
+ Copy central data directly from block, and other data from
+ parent of block.
+ */
+ void fill(u32 daynight_ratio, MapBlock *block);
+};
+
+scene::SMesh* makeMapBlockMesh(MeshMakeData *data);
+
+#endif
+