_uniform_water_uTexMain = glGetUniformLocation( _shader_water.id, "uTexMain" );
_uniform_water_uTexDudv = glGetUniformLocation( _shader_water.id, "uTexDudv" );
_uniform_water_uTexBack = glGetUniformLocation( _shader_water.id, "uTexBack" );
_uniform_water_uTexMain = glGetUniformLocation( _shader_water.id, "uTexMain" );
_uniform_water_uTexDudv = glGetUniformLocation( _shader_water.id, "uTexDudv" );
_uniform_water_uTexBack = glGetUniformLocation( _shader_water.id, "uTexBack" );