private void _switchContext( GLContext context )
{
// Unbind GPU programs and rebind to new context later, because
// scene manager treat render system as ONE 'context' ONLY, and it
// cached the GPU programs using state.
if ( currentVertexProgram != null )
currentVertexProgram.Unbind();
if ( currentFragmentProgram != null )
currentFragmentProgram.Unbind();
if (currentGeometryProgram != null)
currentGeometryProgram.Unbind();
// Disable lights
for (var i = 0 ; i < _currentLights; i++ )
{
SetGLLight( i, null );
lights[ i ] = null;
}
_currentLights = 0;
// Disable textures
DisableTextureUnitsFrom(0);
// It's ready to switching
_currentContext.EndCurrent();
_currentContext = context;
_currentContext.SetCurrent();
// Check if the context has already done one-time initialisation
if ( !_currentContext.Initialized )
{
OneTimeContextInitialization();
_currentContext.Initialized = true;
}
// Rebind GPU programs to new context
if ( currentVertexProgram != null )
currentVertexProgram.Bind();
if ( currentFragmentProgram != null )
currentFragmentProgram.Bind();
if (currentGeometryProgram != null)
currentGeometryProgram.Bind();
// Must reset depth/color write mask to according with user desired, otherwise,
// clearFrameBuffer would be wrong because the value we are recorded may be
// difference with the really state stored in GL context.
Gl.glDepthMask( depthWrite ? 1 : 0 ); // Tao 2.0
Gl.glColorMask( ColorWrite[ 0 ], ColorWrite[ 1 ], ColorWrite[ 2 ], ColorWrite[ 3 ] );
Gl.glStencilMask( stencilMask );
}
