[osg-users] Why can't ive format model texture show when turn on setUseVertexAttributeAliasing(true)?

[OpenSceneGraph Users]

Hi ?

OpenGL and OSG strandles and old fixed function pipeline era and shaders.
You can select a pure shaders subset of OpenGL at compile time and runtime,
and you can also toggle on/off some mappings the OSG provide between the
GL2.x GLSL built in variables and osg_ equivalents useful for
GLES2.x/GL3.x+.

The scene graphs you build for each of these scenarios will need to be
different - you can't use fixed function pipeline state with a GL version
that only supports shaders.  I know nothing about your particular .ive but
my best guess is that it's not compatible with the subset of OpenGL you
selecting.

Robert.

On Fri, 16 Oct 2020 at 03:55, OpenSceneGraph Users <
osg-users at lists.openscenegraph.org> wrote:

> env is system Win10 ,osg 3.6.4, osgearth 2.10.0,GTX1660 TI
>
> Why is there an error in the model texture display when this function is
> turn on?
>
>  const int width( 800 ), height( 450 );
>     const std::string version( "4.3" );
>     osg::ref_ptr< osg::GraphicsContext::Traits > traits = new
> osg::GraphicsContext::Traits();
>     traits->x = 20; traits->y = 30;
>     traits->width = width; traits->height = height;
>     traits->windowDecoration = true;
>     traits->doubleBuffer = true;
>     traits->glContextVersion = version;
>     traits->readDISPLAY();
>     traits->setUndefinedScreenDetailsToDefaultScreen();
>     osg::ref_ptr< osg::GraphicsContext > gc =
> osg::GraphicsContext::createGraphicsContext( traits.get() );
>     if( !gc.valid() )
>     {
>         osg::notify( osg::FATAL ) << "Unable to create OpenGL v" <<
> version << " context." << std::endl;
>         return( 1 );
>     }
> [image: Q20201012125957.png]
>
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