1053 lines
25 KiB
C++
1053 lines
25 KiB
C++
/*
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* Copyright 2011-2016 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include <algorithm>
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#include <vector>
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#include <string>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <bgfx/bgfx.h>
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#include "../../src/vertexdecl.h"
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#include <tinystl/allocator.h>
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#include <tinystl/unordered_map.h>
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#include <tinystl/unordered_set.h>
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namespace stl = tinystl;
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#include <forsyth-too/forsythtriangleorderoptimizer.h>
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#include <ib-compress/indexbuffercompression.h>
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#if 0
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# define BX_TRACE(_format, ...) \
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do { \
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printf(BX_FILE_LINE_LITERAL "BGFX " _format "\n", ##__VA_ARGS__); \
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} while(0)
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# define BX_WARN(_condition, _format, ...) \
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do { \
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if (!(_condition) ) \
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{ \
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BX_TRACE(BX_FILE_LINE_LITERAL "WARN " _format, ##__VA_ARGS__); \
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} \
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} while(0)
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# define BX_CHECK(_condition, _format, ...) \
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do { \
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if (!(_condition) ) \
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{ \
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BX_TRACE(BX_FILE_LINE_LITERAL "CHECK " _format, ##__VA_ARGS__); \
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bx::debugBreak(); \
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} \
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} while(0)
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#endif // 0
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#define EXPECT(_condition) \
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do { \
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if (!(_condition) ) \
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{ \
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printf("Error parsing at:\n" BX_FILE_LINE_LITERAL "\nExpected: " #_condition "\n"); \
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exit(EXIT_FAILURE); \
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} \
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} while(0)
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#include <bx/bx.h>
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#include <bx/debug.h>
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#include <bx/commandline.h>
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#include <bx/timer.h>
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#include <bx/hash.h>
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#include <bx/uint32_t.h>
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#include <bx/fpumath.h>
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#include <bx/tokenizecmd.h>
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#include <bx/crtimpl.h>
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#include "bounds.h"
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struct Vector3
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{
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float x;
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float y;
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float z;
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};
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typedef std::vector<Vector3> Vector3Array;
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struct Index3
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{
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int32_t m_position;
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int32_t m_texcoord;
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int32_t m_normal;
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int32_t m_vertexIndex;
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int32_t m_vbc; // Barycentric ID. Holds eigher 0, 1 or 2.
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};
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typedef stl::unordered_map<uint64_t, Index3> Index3Map;
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struct Triangle
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{
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uint64_t m_index[3];
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};
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typedef std::vector<Triangle> TriangleArray;
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struct Group
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{
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uint32_t m_startTriangle;
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uint32_t m_numTriangles;
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std::string m_name;
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std::string m_material;
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};
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typedef std::vector<Group> GroupArray;
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struct Primitive
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{
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uint32_t m_startVertex;
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uint32_t m_startIndex;
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uint32_t m_numVertices;
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uint32_t m_numIndices;
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std::string m_name;
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};
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typedef std::vector<Primitive> PrimitiveArray;
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static uint32_t s_obbSteps = 17;
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#define BGFX_CHUNK_MAGIC_VB BX_MAKEFOURCC('V', 'B', ' ', 0x1)
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#define BGFX_CHUNK_MAGIC_IB BX_MAKEFOURCC('I', 'B', ' ', 0x0)
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#define BGFX_CHUNK_MAGIC_IBC BX_MAKEFOURCC('I', 'B', 'C', 0x0)
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#define BGFX_CHUNK_MAGIC_PRI BX_MAKEFOURCC('P', 'R', 'I', 0x0)
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long int fsize(FILE* _file)
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{
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long int pos = ftell(_file);
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fseek(_file, 0L, SEEK_END);
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long int size = ftell(_file);
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fseek(_file, pos, SEEK_SET);
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return size;
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}
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void triangleReorder(uint16_t* _indices, uint32_t _numIndices, uint32_t _numVertices, uint16_t _cacheSize)
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{
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uint16_t* newIndexList = new uint16_t[_numIndices];
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Forsyth::OptimizeFaces(_indices, _numIndices, _numVertices, newIndexList, _cacheSize);
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memcpy(_indices, newIndexList, _numIndices*2);
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delete [] newIndexList;
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}
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void triangleCompress(bx::WriterI* _writer, uint16_t* _indices, uint32_t _numIndices, uint8_t* _vertexData, uint32_t _numVertices, uint16_t _stride)
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{
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uint32_t* vertexRemap = (uint32_t*)malloc(_numVertices*sizeof(uint32_t) );
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WriteBitstream writer;
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CompressIndexBuffer(_indices, _numIndices/3, vertexRemap, _numVertices, IBCF_AUTO, writer);
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writer.Finish();
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printf( "uncompressed: %10d, compressed: %10d, ratio: %0.2f%%\n"
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, _numIndices*2
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, (uint32_t)writer.ByteSize()
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, 100.0f - float(writer.ByteSize() ) / float(_numIndices*2)*100.0f
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);
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BX_UNUSED(_vertexData, _stride);
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uint8_t* outVertexData = (uint8_t*)malloc(_numVertices*_stride);
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for (uint32_t ii = 0; ii < _numVertices; ++ii)
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{
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uint32_t remap = vertexRemap[ii];
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remap = UINT32_MAX == remap ? ii : remap;
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memcpy(&outVertexData[remap*_stride], &_vertexData[ii*_stride], _stride);
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}
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memcpy(_vertexData, outVertexData, _numVertices*_stride);
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free(outVertexData);
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free(vertexRemap);
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bx::write(_writer, writer.RawData(), (uint32_t)writer.ByteSize() );
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}
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void calcTangents(void* _vertices, uint16_t _numVertices, bgfx::VertexDecl _decl, const uint16_t* _indices, uint32_t _numIndices)
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{
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struct PosTexcoord
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{
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float m_x;
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float m_y;
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float m_z;
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float m_pad0;
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float m_u;
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float m_v;
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float m_pad1;
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float m_pad2;
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};
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float* tangents = new float[6*_numVertices];
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memset(tangents, 0, 6*_numVertices*sizeof(float) );
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PosTexcoord v0;
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PosTexcoord v1;
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PosTexcoord v2;
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for (uint32_t ii = 0, num = _numIndices/3; ii < num; ++ii)
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{
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const uint16_t* indices = &_indices[ii*3];
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uint32_t i0 = indices[0];
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uint32_t i1 = indices[1];
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uint32_t i2 = indices[2];
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bgfx::vertexUnpack(&v0.m_x, bgfx::Attrib::Position, _decl, _vertices, i0);
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bgfx::vertexUnpack(&v0.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i0);
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bgfx::vertexUnpack(&v1.m_x, bgfx::Attrib::Position, _decl, _vertices, i1);
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bgfx::vertexUnpack(&v1.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i1);
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bgfx::vertexUnpack(&v2.m_x, bgfx::Attrib::Position, _decl, _vertices, i2);
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bgfx::vertexUnpack(&v2.m_u, bgfx::Attrib::TexCoord0, _decl, _vertices, i2);
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const float bax = v1.m_x - v0.m_x;
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const float bay = v1.m_y - v0.m_y;
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const float baz = v1.m_z - v0.m_z;
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const float bau = v1.m_u - v0.m_u;
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const float bav = v1.m_v - v0.m_v;
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const float cax = v2.m_x - v0.m_x;
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const float cay = v2.m_y - v0.m_y;
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const float caz = v2.m_z - v0.m_z;
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const float cau = v2.m_u - v0.m_u;
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const float cav = v2.m_v - v0.m_v;
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const float det = (bau * cav - bav * cau);
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const float invDet = 1.0f / det;
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const float tx = (bax * cav - cax * bav) * invDet;
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const float ty = (bay * cav - cay * bav) * invDet;
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const float tz = (baz * cav - caz * bav) * invDet;
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const float bx = (cax * bau - bax * cau) * invDet;
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const float by = (cay * bau - bay * cau) * invDet;
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const float bz = (caz * bau - baz * cau) * invDet;
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for (uint32_t jj = 0; jj < 3; ++jj)
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{
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float* tanu = &tangents[indices[jj]*6];
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float* tanv = &tanu[3];
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tanu[0] += tx;
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tanu[1] += ty;
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tanu[2] += tz;
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tanv[0] += bx;
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tanv[1] += by;
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tanv[2] += bz;
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}
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}
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for (uint32_t ii = 0; ii < _numVertices; ++ii)
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{
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const float* tanu = &tangents[ii*6];
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const float* tanv = &tangents[ii*6 + 3];
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float normal[4];
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bgfx::vertexUnpack(normal, bgfx::Attrib::Normal, _decl, _vertices, ii);
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float ndt = bx::vec3Dot(normal, tanu);
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float nxt[3];
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bx::vec3Cross(nxt, normal, tanu);
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float tmp[3];
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tmp[0] = tanu[0] - normal[0] * ndt;
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tmp[1] = tanu[1] - normal[1] * ndt;
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tmp[2] = tanu[2] - normal[2] * ndt;
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float tangent[4];
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bx::vec3Norm(tangent, tmp);
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tangent[3] = bx::vec3Dot(nxt, tanv) < 0.0f ? -1.0f : 1.0f;
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bgfx::vertexPack(tangent, true, bgfx::Attrib::Tangent, _decl, _vertices, ii);
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}
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delete [] tangents;
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}
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void write(bx::WriterI* _writer, const void* _vertices, uint32_t _numVertices, uint32_t _stride)
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{
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Sphere maxSphere;
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calcMaxBoundingSphere(maxSphere, _vertices, _numVertices, _stride);
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Sphere minSphere;
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calcMinBoundingSphere(minSphere, _vertices, _numVertices, _stride);
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if (minSphere.m_radius > maxSphere.m_radius)
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{
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bx::write(_writer, maxSphere);
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}
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else
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{
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bx::write(_writer, minSphere);
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}
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Aabb aabb;
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calcAabb(aabb, _vertices, _numVertices, _stride);
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bx::write(_writer, aabb);
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Obb obb;
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calcObb(obb, _vertices, _numVertices, _stride, s_obbSteps);
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bx::write(_writer, obb);
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}
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void write(bx::WriterI* _writer
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, const uint8_t* _vertices
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, uint32_t _numVertices
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, const bgfx::VertexDecl& _decl
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, const uint16_t* _indices
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, uint32_t _numIndices
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, const uint8_t* _compressedIndices
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, uint32_t _compressedSize
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, const std::string& _material
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, const PrimitiveArray& _primitives
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)
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{
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using namespace bx;
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using namespace bgfx;
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uint32_t stride = _decl.getStride();
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write(_writer, BGFX_CHUNK_MAGIC_VB);
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write(_writer, _vertices, _numVertices, stride);
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write(_writer, _decl);
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write(_writer, uint16_t(_numVertices) );
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write(_writer, _vertices, _numVertices*stride);
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if (NULL != _compressedIndices)
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{
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write(_writer, BGFX_CHUNK_MAGIC_IBC);
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write(_writer, _numIndices);
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write(_writer, _compressedSize);
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write(_writer, _compressedIndices, _compressedSize);
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}
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else
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{
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write(_writer, BGFX_CHUNK_MAGIC_IB);
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write(_writer, _numIndices);
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write(_writer, _indices, _numIndices*2);
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}
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write(_writer, BGFX_CHUNK_MAGIC_PRI);
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uint16_t nameLen = uint16_t(_material.size() );
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write(_writer, nameLen);
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write(_writer, _material.c_str(), nameLen);
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write(_writer, uint16_t(_primitives.size() ) );
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for (PrimitiveArray::const_iterator primIt = _primitives.begin(); primIt != _primitives.end(); ++primIt)
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{
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const Primitive& prim = *primIt;
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nameLen = uint16_t(prim.m_name.size() );
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write(_writer, nameLen);
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write(_writer, prim.m_name.c_str(), nameLen);
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write(_writer, prim.m_startIndex);
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write(_writer, prim.m_numIndices);
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write(_writer, prim.m_startVertex);
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write(_writer, prim.m_numVertices);
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write(_writer, &_vertices[prim.m_startVertex*stride], prim.m_numVertices, stride);
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}
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}
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void help(const char* _error = NULL)
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{
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if (NULL != _error)
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{
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fprintf(stderr, "Error:\n%s\n\n", _error);
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}
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fprintf(stderr
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, "geometryc, bgfx geometry compiler tool\n"
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"Copyright 2011-2016 Branimir Karadzic. All rights reserved.\n"
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"License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause\n\n"
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);
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fprintf(stderr
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, "Usage: geometryc -f <in> -o <out>\n"
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"\n"
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"Supported input file types:\n"
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" *.obj Wavefront\n"
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"\n"
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"Options:\n"
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" -f <file path> Input file path.\n"
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" -o <file path> Output file path.\n"
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" -s, --scale <num> Scale factor.\n"
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" --ccw Counter-clockwise winding order.\n"
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" --flipv Flip texture coordinate V.\n"
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" --obb <num> Number of steps for calculating oriented bounding box.\n"
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" Default value is 17. Less steps less precise OBB is.\n"
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" More steps slower calculation.\n"
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" --packnormal <num> Normal packing.\n"
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" 0 - unpacked 12 bytes (default).\n"
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" 1 - packed 4 bytes.\n"
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" --packuv <num> Texture coordinate packing.\n"
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" 0 - unpacked 8 bytes (default).\n"
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" 1 - packed 4 bytes.\n"
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" --tangent Calculate tangent vectors (packing mode is the same as normal).\n"
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" --barycentric Adds barycentric vertex attribute (packed in bgfx::Attrib::Color1).\n"
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" -c, --compress Compress indices.\n"
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"\n"
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"For additional information, see https://github.com/bkaradzic/bgfx\n"
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);
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}
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inline uint32_t rgbaToAbgr(uint8_t _r, uint8_t _g, uint8_t _b, uint8_t _a)
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{
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return (uint32_t(_r)<<0)
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| (uint32_t(_g)<<8)
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| (uint32_t(_b)<<16)
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| (uint32_t(_a)<<24)
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;
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}
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struct GroupSortByMaterial
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{
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bool operator()(const Group& _lhs, const Group& _rhs)
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{
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return _lhs.m_material < _rhs.m_material;
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}
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};
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int main(int _argc, const char* _argv[])
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{
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bx::CommandLine cmdLine(_argc, _argv);
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const char* filePath = cmdLine.findOption('f');
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if (NULL == filePath)
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{
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help("Input file name must be specified.");
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return EXIT_FAILURE;
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}
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const char* outFilePath = cmdLine.findOption('o');
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if (NULL == outFilePath)
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{
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help("Output file name must be specified.");
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return EXIT_FAILURE;
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}
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float scale = 1.0f;
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const char* scaleArg = cmdLine.findOption('s', "scale");
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if (NULL != scaleArg)
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{
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scale = (float)atof(scaleArg);
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}
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bool compress = cmdLine.hasArg('c', "compress");
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cmdLine.hasArg(s_obbSteps, '\0', "obb");
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s_obbSteps = bx::uint32_min(bx::uint32_max(s_obbSteps, 1), 90);
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uint32_t packNormal = 0;
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cmdLine.hasArg(packNormal, '\0', "packnormal");
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uint32_t packUv = 0;
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cmdLine.hasArg(packUv, '\0', "packuv");
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bool ccw = cmdLine.hasArg("ccw");
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bool flipV = cmdLine.hasArg("flipv");
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bool hasTangent = cmdLine.hasArg("tangent");
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bool hasBc = cmdLine.hasArg("barycentric");
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FILE* file = fopen(filePath, "r");
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if (NULL == file)
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{
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printf("Unable to open input file '%s'.", filePath);
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exit(EXIT_FAILURE);
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}
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int64_t parseElapsed = -bx::getHPCounter();
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int64_t triReorderElapsed = 0;
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uint32_t size = (uint32_t)fsize(file);
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char* data = new char[size+1];
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size = (uint32_t)fread(data, 1, size, file);
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data[size] = '\0';
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fclose(file);
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// https://en.wikipedia.org/wiki/Wavefront_.obj_file
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Vector3Array positions;
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Vector3Array normals;
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Vector3Array texcoords;
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Index3Map indexMap;
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TriangleArray triangles;
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GroupArray groups;
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uint32_t num = 0;
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Group group;
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group.m_startTriangle = 0;
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group.m_numTriangles = 0;
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char commandLine[2048];
|
|
uint32_t len = sizeof(commandLine);
|
|
int argc;
|
|
char* argv[64];
|
|
const char* next = data;
|
|
do
|
|
{
|
|
next = bx::tokenizeCommandLine(next, commandLine, len, argc, argv, BX_COUNTOF(argv), '\n');
|
|
if (0 < argc)
|
|
{
|
|
if (0 == strcmp(argv[0], "#") )
|
|
{
|
|
if (2 < argc
|
|
&& 0 == strcmp(argv[2], "polygons") )
|
|
{
|
|
}
|
|
}
|
|
else if (0 == strcmp(argv[0], "f") )
|
|
{
|
|
Triangle triangle;
|
|
memset(&triangle, 0, sizeof(Triangle) );
|
|
|
|
const int numNormals = (int)normals.size();
|
|
const int numTexcoords = (int)texcoords.size();
|
|
const int numPositions = (int)positions.size();
|
|
for (uint32_t edge = 0, numEdges = argc-1; edge < numEdges; ++edge)
|
|
{
|
|
Index3 index;
|
|
index.m_texcoord = -1;
|
|
index.m_normal = -1;
|
|
index.m_vertexIndex = -1;
|
|
if (hasBc)
|
|
{
|
|
index.m_vbc = edge < 3 ? edge : (1+(edge+1) )&1;
|
|
}
|
|
else
|
|
{
|
|
index.m_vbc = 0;
|
|
}
|
|
|
|
char* vertex = argv[edge+1];
|
|
char* texcoord = strchr(vertex, '/');
|
|
if (NULL != texcoord)
|
|
{
|
|
*texcoord++ = '\0';
|
|
|
|
char* normal = strchr(texcoord, '/');
|
|
if (NULL != normal)
|
|
{
|
|
*normal++ = '\0';
|
|
const int nn = atoi(normal);
|
|
index.m_normal = (nn < 0) ? nn+numNormals : nn-1;
|
|
}
|
|
|
|
// https://en.wikipedia.org/wiki/Wavefront_.obj_file#Vertex_Normal_Indices_Without_Texture_Coordinate_Indices
|
|
if(*texcoord != '\0')
|
|
{
|
|
const int tex = atoi(texcoord);
|
|
index.m_texcoord = (tex < 0) ? tex+numTexcoords : tex-1;
|
|
}
|
|
}
|
|
|
|
const int pos = atoi(vertex);
|
|
index.m_position = (pos < 0) ? pos+numPositions : pos-1;
|
|
|
|
uint64_t hash0 = index.m_position;
|
|
uint64_t hash1 = uint64_t(index.m_texcoord)<<20;
|
|
uint64_t hash2 = uint64_t(index.m_normal)<<40;
|
|
uint64_t hash3 = uint64_t(index.m_vbc)<<60;
|
|
uint64_t hash = hash0^hash1^hash2^hash3;
|
|
|
|
stl::pair<Index3Map::iterator, bool> result = indexMap.insert(stl::make_pair(hash, index) );
|
|
if (!result.second)
|
|
{
|
|
Index3& oldIndex = result.first->second;
|
|
BX_UNUSED(oldIndex);
|
|
BX_CHECK(oldIndex.m_position == index.m_position
|
|
&& oldIndex.m_texcoord == index.m_texcoord
|
|
&& oldIndex.m_normal == index.m_normal
|
|
, "Hash collision!"
|
|
);
|
|
}
|
|
|
|
switch (edge)
|
|
{
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
triangle.m_index[edge] = hash;
|
|
if (2 == edge)
|
|
{
|
|
if (ccw)
|
|
{
|
|
std::swap(triangle.m_index[1], triangle.m_index[2]);
|
|
}
|
|
triangles.push_back(triangle);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (ccw)
|
|
{
|
|
triangle.m_index[2] = triangle.m_index[1];
|
|
triangle.m_index[1] = hash;
|
|
}
|
|
else
|
|
{
|
|
triangle.m_index[1] = triangle.m_index[2];
|
|
triangle.m_index[2] = hash;
|
|
}
|
|
triangles.push_back(triangle);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else if (0 == strcmp(argv[0], "g") )
|
|
{
|
|
EXPECT(1 < argc);
|
|
group.m_name = argv[1];
|
|
}
|
|
else if (*argv[0] == 'v')
|
|
{
|
|
group.m_numTriangles = (uint32_t)(triangles.size() ) - group.m_startTriangle;
|
|
if (0 < group.m_numTriangles)
|
|
{
|
|
groups.push_back(group);
|
|
group.m_startTriangle = (uint32_t)(triangles.size() );
|
|
group.m_numTriangles = 0;
|
|
}
|
|
|
|
if (0 == strcmp(argv[0], "vn") )
|
|
{
|
|
Vector3 normal;
|
|
normal.x = (float)atof(argv[1]);
|
|
normal.y = (float)atof(argv[2]);
|
|
normal.z = (float)atof(argv[3]);
|
|
|
|
normals.push_back(normal);
|
|
}
|
|
else if (0 == strcmp(argv[0], "vp") )
|
|
{
|
|
static bool once = true;
|
|
if (once)
|
|
{
|
|
once = false;
|
|
printf("warning: 'parameter space vertices' are unsupported.\n");
|
|
}
|
|
}
|
|
else if (0 == strcmp(argv[0], "vt") )
|
|
{
|
|
Vector3 texcoord;
|
|
texcoord.x = (float)atof(argv[1]);
|
|
texcoord.y = 0.0f;
|
|
texcoord.z = 0.0f;
|
|
switch (argc)
|
|
{
|
|
case 4:
|
|
texcoord.z = (float)atof(argv[3]);
|
|
// fallthrough
|
|
case 3:
|
|
texcoord.y = (float)atof(argv[2]);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
texcoords.push_back(texcoord);
|
|
}
|
|
else
|
|
{
|
|
float px = (float)atof(argv[1]);
|
|
float py = (float)atof(argv[2]);
|
|
float pz = (float)atof(argv[3]);
|
|
float pw = 1.0f;
|
|
if (argc > 4)
|
|
{
|
|
pw = (float)atof(argv[4]);
|
|
}
|
|
|
|
float invW = scale/pw;
|
|
px *= invW;
|
|
py *= invW;
|
|
pz *= invW;
|
|
|
|
Vector3 pos;
|
|
pos.x = px;
|
|
pos.y = py;
|
|
pos.z = pz;
|
|
|
|
positions.push_back(pos);
|
|
}
|
|
}
|
|
else if (0 == strcmp(argv[0], "usemtl") )
|
|
{
|
|
std::string material(argv[1]);
|
|
|
|
if (material != group.m_material)
|
|
{
|
|
group.m_numTriangles = (uint32_t)(triangles.size() ) - group.m_startTriangle;
|
|
if (0 < group.m_numTriangles)
|
|
{
|
|
groups.push_back(group);
|
|
group.m_startTriangle = (uint32_t)(triangles.size() );
|
|
group.m_numTriangles = 0;
|
|
}
|
|
}
|
|
|
|
group.m_material = material;
|
|
}
|
|
// unsupported tags
|
|
// else if (0 == strcmp(argv[0], "mtllib") )
|
|
// {
|
|
// }
|
|
// else if (0 == strcmp(argv[0], "o") )
|
|
// {
|
|
// }
|
|
// else if (0 == strcmp(argv[0], "s") )
|
|
// {
|
|
// }
|
|
}
|
|
|
|
++num;
|
|
}
|
|
while ('\0' != *next);
|
|
|
|
group.m_numTriangles = (uint32_t)(triangles.size() ) - group.m_startTriangle;
|
|
if (0 < group.m_numTriangles)
|
|
{
|
|
groups.push_back(group);
|
|
group.m_startTriangle = (uint32_t)(triangles.size() );
|
|
group.m_numTriangles = 0;
|
|
}
|
|
|
|
delete [] data;
|
|
|
|
int64_t now = bx::getHPCounter();
|
|
parseElapsed += now;
|
|
int64_t convertElapsed = -now;
|
|
|
|
std::sort(groups.begin(), groups.end(), GroupSortByMaterial() );
|
|
|
|
bool hasColor = false;
|
|
bool hasNormal;
|
|
bool hasTexcoord;
|
|
{
|
|
Index3Map::const_iterator it = indexMap.begin();
|
|
hasNormal = -1 != it->second.m_normal;
|
|
hasTexcoord = -1 != it->second.m_texcoord;
|
|
|
|
if (!hasTexcoord
|
|
&& texcoords.size() == positions.size() )
|
|
{
|
|
hasTexcoord = true;
|
|
|
|
for (Index3Map::iterator jt = indexMap.begin(), jtEnd = indexMap.end(); jt != jtEnd; ++jt)
|
|
{
|
|
jt->second.m_texcoord = jt->second.m_position;
|
|
}
|
|
}
|
|
|
|
if (!hasNormal
|
|
&& normals.size() == positions.size() )
|
|
{
|
|
hasNormal = true;
|
|
|
|
for (Index3Map::iterator jt = indexMap.begin(), jtEnd = indexMap.end(); jt != jtEnd; ++jt)
|
|
{
|
|
jt->second.m_normal = jt->second.m_position;
|
|
}
|
|
}
|
|
}
|
|
|
|
bgfx::VertexDecl decl;
|
|
decl.begin();
|
|
decl.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float);
|
|
|
|
if (hasColor)
|
|
{
|
|
decl.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true);
|
|
}
|
|
|
|
if (hasBc)
|
|
{
|
|
decl.add(bgfx::Attrib::Color1, 4, bgfx::AttribType::Uint8, true);
|
|
}
|
|
|
|
if (hasTexcoord)
|
|
{
|
|
switch (packUv)
|
|
{
|
|
default:
|
|
case 0:
|
|
decl.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float);
|
|
break;
|
|
|
|
case 1:
|
|
decl.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Half);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hasNormal)
|
|
{
|
|
hasTangent &= hasTexcoord;
|
|
|
|
switch (packNormal)
|
|
{
|
|
default:
|
|
case 0:
|
|
decl.add(bgfx::Attrib::Normal, 3, bgfx::AttribType::Float);
|
|
if (hasTangent)
|
|
{
|
|
decl.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Float);
|
|
}
|
|
break;
|
|
|
|
case 1:
|
|
decl.add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true, true);
|
|
if (hasTangent)
|
|
{
|
|
decl.add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true, true);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
decl.end();
|
|
|
|
uint32_t stride = decl.getStride();
|
|
uint8_t* vertexData = new uint8_t[triangles.size() * 3 * stride];
|
|
uint16_t* indexData = new uint16_t[triangles.size() * 3];
|
|
int32_t numVertices = 0;
|
|
int32_t numIndices = 0;
|
|
int32_t numPrimitives = 0;
|
|
|
|
uint8_t* vertices = vertexData;
|
|
uint16_t* indices = indexData;
|
|
|
|
std::string material = groups.begin()->m_material;
|
|
|
|
PrimitiveArray primitives;
|
|
|
|
bx::CrtFileWriter writer;
|
|
if (!bx::open(&writer, outFilePath) )
|
|
{
|
|
printf("Unable to open output file '%s'.", outFilePath);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
Primitive prim;
|
|
prim.m_startVertex = 0;
|
|
prim.m_startIndex = 0;
|
|
|
|
uint32_t positionOffset = decl.getOffset(bgfx::Attrib::Position);
|
|
uint32_t color0Offset = decl.getOffset(bgfx::Attrib::Color0);
|
|
|
|
bx::CrtAllocator crtAllocator;
|
|
bx::MemoryBlock memBlock(&crtAllocator);
|
|
|
|
uint32_t ii = 0;
|
|
for (GroupArray::const_iterator groupIt = groups.begin(); groupIt != groups.end(); ++groupIt, ++ii)
|
|
{
|
|
for (uint32_t tri = groupIt->m_startTriangle, end = tri + groupIt->m_numTriangles; tri < end; ++tri)
|
|
{
|
|
if (material != groupIt->m_material
|
|
|| 65533 < numVertices)
|
|
{
|
|
prim.m_numVertices = numVertices - prim.m_startVertex;
|
|
prim.m_numIndices = numIndices - prim.m_startIndex;
|
|
if (0 < prim.m_numVertices)
|
|
{
|
|
primitives.push_back(prim);
|
|
}
|
|
|
|
if (hasTangent)
|
|
{
|
|
calcTangents(vertexData, numVertices, decl, indexData, numIndices);
|
|
}
|
|
|
|
bx::MemoryWriter memWriter(&memBlock);
|
|
|
|
triReorderElapsed -= bx::getHPCounter();
|
|
for (PrimitiveArray::const_iterator primIt = primitives.begin(); primIt != primitives.end(); ++primIt)
|
|
{
|
|
const Primitive& prim1 = *primIt;
|
|
triangleReorder(indexData + prim1.m_startIndex, prim1.m_numIndices, numVertices, 32);
|
|
if (compress)
|
|
{
|
|
triangleCompress(&memWriter
|
|
, indexData + prim1.m_startIndex
|
|
, prim1.m_numIndices
|
|
, vertexData + prim1.m_startVertex
|
|
, numVertices
|
|
, stride
|
|
);
|
|
}
|
|
}
|
|
triReorderElapsed += bx::getHPCounter();
|
|
|
|
write(&writer
|
|
, vertexData
|
|
, numVertices
|
|
, decl
|
|
, indexData
|
|
, numIndices
|
|
, (uint8_t*)memBlock.more()
|
|
, memBlock.getSize()
|
|
, material
|
|
, primitives
|
|
);
|
|
primitives.clear();
|
|
|
|
for (Index3Map::iterator indexIt = indexMap.begin(); indexIt != indexMap.end(); ++indexIt)
|
|
{
|
|
indexIt->second.m_vertexIndex = -1;
|
|
}
|
|
|
|
vertices = vertexData;
|
|
indices = indexData;
|
|
numVertices = 0;
|
|
numIndices = 0;
|
|
prim.m_startVertex = 0;
|
|
prim.m_startIndex = 0;
|
|
++numPrimitives;
|
|
|
|
material = groupIt->m_material;
|
|
}
|
|
|
|
Triangle& triangle = triangles[tri];
|
|
for (uint32_t edge = 0; edge < 3; ++edge)
|
|
{
|
|
uint64_t hash = triangle.m_index[edge];
|
|
Index3& index = indexMap[hash];
|
|
if (index.m_vertexIndex == -1)
|
|
{
|
|
index.m_vertexIndex = numVertices++;
|
|
|
|
float* position = (float*)(vertices + positionOffset);
|
|
memcpy(position, &positions[index.m_position], 3*sizeof(float) );
|
|
|
|
if (hasColor)
|
|
{
|
|
uint32_t* color0 = (uint32_t*)(vertices + color0Offset);
|
|
*color0 = rgbaToAbgr(numVertices%255, numIndices%255, 0, 0xff);
|
|
}
|
|
|
|
if (hasBc)
|
|
{
|
|
const float bc[3] =
|
|
{
|
|
(index.m_vbc == 0) ? 1.0f : 0.0f,
|
|
(index.m_vbc == 1) ? 1.0f : 0.0f,
|
|
(index.m_vbc == 2) ? 1.0f : 0.0f,
|
|
};
|
|
bgfx::vertexPack(bc, true, bgfx::Attrib::Color1, decl, vertices);
|
|
}
|
|
|
|
if (hasTexcoord)
|
|
{
|
|
float uv[2];
|
|
memcpy(uv, &texcoords[index.m_texcoord], 2*sizeof(float) );
|
|
|
|
if (flipV)
|
|
{
|
|
uv[1] = -uv[1];
|
|
}
|
|
|
|
bgfx::vertexPack(uv, true, bgfx::Attrib::TexCoord0, decl, vertices);
|
|
}
|
|
|
|
if (hasNormal)
|
|
{
|
|
float normal[4];
|
|
bx::vec3Norm(normal, (float*)&normals[index.m_normal]);
|
|
bgfx::vertexPack(normal, true, bgfx::Attrib::Normal, decl, vertices);
|
|
}
|
|
|
|
vertices += stride;
|
|
}
|
|
|
|
*indices++ = (uint16_t)index.m_vertexIndex;
|
|
++numIndices;
|
|
}
|
|
}
|
|
|
|
prim.m_numVertices = numVertices - prim.m_startVertex;
|
|
if (0 < prim.m_numVertices)
|
|
{
|
|
prim.m_numIndices = numIndices - prim.m_startIndex;
|
|
prim.m_name = groupIt->m_name;
|
|
primitives.push_back(prim);
|
|
prim.m_startVertex = numVertices;
|
|
prim.m_startIndex = numIndices;
|
|
}
|
|
|
|
BX_TRACE("%3d: s %5d, n %5d, %s\n"
|
|
, ii
|
|
, groupIt->m_startTriangle
|
|
, groupIt->m_numTriangles
|
|
, groupIt->m_material.c_str()
|
|
);
|
|
}
|
|
|
|
if (0 < primitives.size() )
|
|
{
|
|
if (hasTangent)
|
|
{
|
|
calcTangents(vertexData, numVertices, decl, indexData, numIndices);
|
|
}
|
|
|
|
bx::MemoryWriter memWriter(&memBlock);
|
|
|
|
triReorderElapsed -= bx::getHPCounter();
|
|
for (PrimitiveArray::const_iterator primIt = primitives.begin(); primIt != primitives.end(); ++primIt)
|
|
{
|
|
const Primitive& prim1 = *primIt;
|
|
triangleReorder(indexData + prim1.m_startIndex, prim1.m_numIndices, numVertices, 32);
|
|
if (compress)
|
|
{
|
|
triangleCompress(&memWriter
|
|
, indexData + prim1.m_startIndex
|
|
, prim1.m_numIndices
|
|
, vertexData + prim1.m_startVertex
|
|
, numVertices
|
|
, stride
|
|
);
|
|
}
|
|
}
|
|
triReorderElapsed += bx::getHPCounter();
|
|
|
|
write(&writer
|
|
, vertexData
|
|
, numVertices
|
|
, decl
|
|
, indexData
|
|
, numIndices
|
|
, (uint8_t*)memBlock.more()
|
|
, memBlock.getSize()
|
|
, material
|
|
, primitives
|
|
);
|
|
}
|
|
|
|
printf("size: %d\n", uint32_t(bx::seek(&writer) ) );
|
|
bx::close(&writer);
|
|
|
|
delete [] indexData;
|
|
delete [] vertexData;
|
|
|
|
now = bx::getHPCounter();
|
|
convertElapsed += now;
|
|
|
|
printf("parse %f [s]\ntri reorder %f [s]\nconvert %f [s]\n# %d, g %d, p %d, v %d, i %d\n"
|
|
, double(parseElapsed)/bx::getHPFrequency()
|
|
, double(triReorderElapsed)/bx::getHPFrequency()
|
|
, double(convertElapsed)/bx::getHPFrequency()
|
|
, num
|
|
, uint32_t(groups.size() )
|
|
, numPrimitives
|
|
, numVertices
|
|
, numIndices
|
|
);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|