Method addVertexAttribute

src/IECoreGL/Shader.cpp:868–914

}

void Shader::Setup::addVertexAttribute( const std::string &name, IECore::ConstDataPtr value, GLuint divisor )
{
	const Parameter *p = m_memberData->shader->vertexAttribute( name );
	if( !p )
	{
		return;
	}

	if( p->size > 1 )
	{
		IECore::msg( IECore::Msg::Warning, "Shader::Setup::addVertexAttribute", format( "Array attribute \"%s\" is currently unsupported." ) % name );
	}

	GLenum dataGLType = glType( value.get() );
	if( !dataGLType )
	{
		IECore::msg( IECore::Msg::Warning, "Shader::Setup::addVertexAttribute", format( "Vertex attribute \"%s\" has unsuitable data type \"%s\"" ) % name % value->typeName() );
	}

	GLint size = 0;
	switch( p->type )
	{
		case GL_INT :
		case GL_FLOAT :
			size = 1;
			break;
		case GL_INT_VEC2 :
		case GL_FLOAT_VEC2 :
			size = 2;
			break;
		case GL_INT_VEC3 :
		case GL_FLOAT_VEC3 :
			size = 3;
			break;
		case GL_FLOAT_VEC4 :
			size = 4;
			break;
		default :
			IECore::msg( IECore::Msg::Warning, "Shader::Setup::addVertexAttribute", format( "Vertex attribute \"%s\" has unsupported OpenGL type \"%d\"" ) % name % p->type );
			return;
	}

	CachedConverterPtr converter = CachedConverter::defaultCachedConverter();
	ConstBufferPtr buffer = IECore::runTimeCast<const Buffer>( converter->convert( value.get() ) );

	m_memberData->vertexValues[ p->location ] = new MemberData::VertexValue( p->location, dataGLType, size, buffer, divisor );
}

bool Shader::Setup::hasCsValue() const
{