Function BuildFromGrannyVertexDecl

trinity/Tr2VertexDefinitionUtilities.cpp:69–135

-------------------------------------------------------------------------------------- Description: Converts Granny vertex definition to Trinity vertex definition. Arguments: grannyVertexDecl - Granny vertex definition Return Value: Trinity vertex definition corresponding to input Granny vertex definition --------------------------------------------------------------------------------------

//   Trinity vertex definition corresponding to input Granny vertex definition
// --------------------------------------------------------------------------------------
Tr2VertexDefinition BuildFromGrannyVertexDecl( const granny_data_type_definition* grannyVertexDecl )
{
	Tr2VertexDefinition vd;

	while( grannyVertexDecl->Type != GrannyEndMember )
	{
		const granny_data_type_definition& src = *grannyVertexDecl++;

		Tr2VertexDefinition::Item item;

		item.m_stream = 0;
		item.m_offset = vd.m_nextOffset[0];
		item.m_dataType = ConvertGrannyTypeToDataType( src );
		item.m_usageIndex = 0;

		vd.m_nextOffset[0] += vd.GetDataTypeSizeInBytes( item.m_dataType );

		if( !strncmp( src.Name, GrannyVertexPositionName, strlen( GrannyVertexPositionName ) ) )
		{
			item.m_usage = vd.POSITION;
			char C = src.Name[strlen( GrannyVertexPositionName )];
			item.m_usageIndex = C ? unsigned( C - '0' ) : 0;
		}
		else if( !strncmp( src.Name, GrannyVertexDiffuseColorName, strlen( GrannyVertexDiffuseColorName ) ) )
		{
			item.m_usage = vd.COLOR;
			char C = src.Name[strlen( GrannyVertexDiffuseColorName )];
			item.m_usageIndex = C ? unsigned( C - '0' ) : 0;
		}
		else if( !strncmp( src.Name, GrannyVertexNormalName, strlen( GrannyVertexNormalName ) ) )
		{
			item.m_usage = vd.NORMAL;
			char C = src.Name[strlen( GrannyVertexNormalName )];
			item.m_usageIndex = C ? unsigned( C - '0' ) : 0;
		}
		else if( !strncmp( src.Name, GrannyVertexTangentName, strlen( GrannyVertexTangentName ) ) )
		{
			item.m_usage = vd.TANGENT;
			char C = src.Name[strlen( GrannyVertexTangentName )];
			item.m_usageIndex = C ? unsigned( C - '0' ) : 0;
		}
		else if( !strncmp( src.Name, GrannyVertexBinormalName, strlen( GrannyVertexBinormalName ) ) )
		{
			item.m_usage = vd.BITANGENT;
			char C = src.Name[strlen( GrannyVertexBinormalName )];
			item.m_usageIndex = C ? unsigned( C - '0' ) : 0;
		}
		else if( !strncmp( src.Name, GrannyVertexTextureCoordinatesName, strlen( GrannyVertexTextureCoordinatesName ) ) )
		{
			item.m_usage = vd.TEXCOORD;
			char C = src.Name[strlen( GrannyVertexTextureCoordinatesName )];
			item.m_usageIndex = C ? unsigned( C - '0' ) : 0;
		}
		else if( !strcmp( src.Name, GrannyVertexBoneIndicesName ) )
		{
			item.m_usage = vd.BLENDINDICES;
		}
		else if( !strcmp( src.Name, GrannyVertexBoneWeightsName ) )