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Merge pull request #1154 from Kvalme/master 

Fix for COLLADA export texture mapping #1084
pull/1159/head
Alexander Gessler 2017-01-28 13:28:31 +01:00 committed by GitHub
parent e2e2d52d47 9ca89808a9
commit 16c50df071
2 changed files with 29 additions and 18 deletions
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40
code/ColladaExporter.cpp
View File

@ -809,7 +809,7 @@ void ColladaExporter::WriteGeometry( size_t pIndex)
const std::string idstr = GetMeshId( pIndex);
const std::string idstrEscaped = XMLEscape(idstr);
if( mesh->mNumFaces == 0 || mesh->mNumVertices == 0 )
if ( mesh->mNumFaces == 0 || mesh->mNumVertices == 0 )
return;
// opening tag
@ -843,22 +843,10 @@ void ColladaExporter::WriteGeometry( size_t pIndex)
}
// assemble vertex structure
// Only write input for POSITION since we will write other as shared inputs in polygon definition
mOutput << startstr << "<vertices id=\"" << idstrEscaped << "-vertices" << "\">" << endstr;
PushTag();
mOutput << startstr << "<input semantic=\"POSITION\" source=\"#" << idstrEscaped << "-positions\" />" << endstr;
if( mesh->HasNormals() )
mOutput << startstr << "<input semantic=\"NORMAL\" source=\"#" << idstrEscaped << "-normals\" />" << endstr;
for( size_t a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a )
{
if( mesh->HasTextureCoords(static_cast<unsigned int>(a)) )
mOutput << startstr << "<input semantic=\"TEXCOORD\" source=\"#" << idstrEscaped << "-tex" << a << "\" " /*<< "set=\"" << a << "\"" */ << " />" << endstr;
}
for( size_t a = 0; a < AI_MAX_NUMBER_OF_COLOR_SETS; ++a )
{
if( mesh->HasVertexColors(static_cast<unsigned int>(a) ) )
mOutput << startstr << "<input semantic=\"COLOR\" source=\"#" << idstrEscaped << "-color" << a << "\" " /*<< set=\"" << a << "\"" */ << " />" << endstr;
}
PopTag();
mOutput << startstr << "</vertices>" << endstr;
@ -877,6 +865,19 @@ void ColladaExporter::WriteGeometry( size_t pIndex)
mOutput << startstr << "<lines count=\"" << countLines << "\" material=\"defaultMaterial\">" << endstr;
PushTag();
mOutput << startstr << "<input offset=\"0\" semantic=\"VERTEX\" source=\"#" << idstrEscaped << "-vertices\" />" << endstr;
if( mesh->HasNormals() )
mOutput << startstr << "<input semantic=\"NORMAL\" source=\"#" << idstrEscaped << "-normals\" />" << endstr;
for( size_t a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a )
{
if( mesh->HasTextureCoords(static_cast<unsigned int>(a)) )
mOutput << startstr << "<input semantic=\"TEXCOORD\" source=\"#" << idstrEscaped << "-tex" << a << "\" " << "set=\"" << a << "\"" << " />" << endstr;
}
for( size_t a = 0; a < AI_MAX_NUMBER_OF_COLOR_SETS; ++a )
{
if( mesh->HasVertexColors(static_cast<unsigned int>(a) ) )
mOutput << startstr << "<input semantic=\"COLOR\" source=\"#" << idstrEscaped << "-color" << a << "\" " << "set=\"" << a << "\"" << " />" << endstr;
}
mOutput << startstr << "<p>";
for( size_t a = 0; a < mesh->mNumFaces; ++a )
{
@ -898,10 +899,17 @@ void ColladaExporter::WriteGeometry( size_t pIndex)
mOutput << startstr << "<polylist count=\"" << countPoly << "\" material=\"defaultMaterial\">" << endstr;
PushTag();
mOutput << startstr << "<input offset=\"0\" semantic=\"VERTEX\" source=\"#" << idstrEscaped << "-vertices\" />" << endstr;
if( mesh->HasNormals() )
mOutput << startstr << "<input offset=\"0\" semantic=\"NORMAL\" source=\"#" << idstrEscaped << "-normals\" />" << endstr;
for( size_t a = 0; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a )
{
if( mesh->HasTextureCoords(static_cast<unsigned int>(a) ) )
mOutput << startstr << "<input offset=\"0\" semantic=\"TEXCOORD\" source=\"#" << idstrEscaped << "-tex" << a << "\" set=\"" << a << "\" />" << endstr;
if( mesh->HasTextureCoords(static_cast<unsigned int>(a)) )
mOutput << startstr << "<input offset=\"0\" semantic=\"TEXCOORD\" source=\"#" << idstrEscaped << "-tex" << a << "\" " << "set=\"" << a << "\"" << " />" << endstr;
}
for( size_t a = 0; a < AI_MAX_NUMBER_OF_COLOR_SETS; ++a )
{
if( mesh->HasVertexColors(static_cast<unsigned int>(a) ) )
mOutput << startstr << "<input offset=\"0\" semantic=\"COLOR\" source=\"#" << idstrEscaped << "-color" << a << "\" " << "set=\"" << a << "\"" << " />" << endstr;
}
mOutput << startstr << "<vcount>";

3
code/ColladaParser.cpp
View File

@ -2451,6 +2451,9 @@ size_t ColladaParser::ReadPrimitives( Mesh* pMesh, std::vector<InputChannel>& pP
return numPrimitives;
}
///@note This function willn't work correctly if both PerIndex and PerVertex channels have same channels.
///For example if TEXCOORD present in both <vertices> and <polylist> tags this function will create wrong uv coordinates.
///It's not clear from COLLADA documentation is this allowed or not. For now only exporter fixed to avoid such behavior
void ColladaParser::CopyVertex(size_t currentVertex, size_t numOffsets, size_t numPoints, size_t perVertexOffset, Mesh* pMesh, std::vector<InputChannel>& pPerIndexChannels, size_t currentPrimitive, const std::vector<size_t>& indices){
// calculate the base offset of the vertex whose attributes we ant to copy
size_t baseOffset = currentPrimitive * numOffsets * numPoints + currentVertex * numOffsets;