+Standard_EXPORT Standard_Boolean OpenGl_BackgroundArray::createSkydomeArray() const
...
@@ -580,7 +649,7 @@ void OpenGl_BackgroundArray::Render (const Handle(OpenGl_Workspace)& theWorkspac
     if (aCtx->Camera()->Tile().IsValid())
     {
       aWorldView.SetDiagonal (OpenGl_Vec4 (2.0f / aTileSize.x(), 2.0f / aTileSize.y(), 1.0f, 1.0f));
-      if (myType == Graphic3d_TOB_GRADIENT)
+      if (myType == Graphic3d_TOB_GRADIENT || myType == Graphic3d_TOB_SKYDOME)

+Standard_EXPORT Standard_Boolean OpenGl_BackgroundArray::createSkydomeArray() const

  - Added new 'vskydome' DRAW command.

+  if (theSunDirection.Modulus() < Precision::Confusion())
+    mySunDirection = Graphic3d_Vec3(0.0f, 1.0f, 0.0f);

+  if (theSunDirection.Modulus() < Precision::Confusion())
+    mySunDirection = Graphic3d_Vec3(0.0f, 1.0f, 0.0f);
+
+  mySunDirection = theSunDirection.Normalized();

+  //! Set sun direction (must be not null-length vec).
+  //! Sun direction with negative Y component represents moon with (-X, -Y, -Z) direction.
+  Standard_EXPORT void SetSunDirection (const Graphic3d_Vec3& theSunDirection);

+  Graphic3d_Vec3     SunDirection() const { return mySunDirection; }

+  Standard_ShortReal Foggy() const { return myHaze; }
+  Standard_ShortReal Cloudy()  const { return myCloudy; }

+  //! @param theCloudy [in] cloud intensity, 0.0 means no cloud at all and 1.0 - high clody.

+  //! Get cloud intensity.
+  Standard_ShortReal Cloudy()  const { return myCloudy; }

+  //! Get time (parameter) of cloud simulation.
+  Standard_ShortReal TimeParameter() const { return myTime; }

+#include "Aspect_SkydomeBackground.hxx"

+  myHaze = theFoggy < 0.0f ? 0.0f : theFoggy;

+
+

+Standard_EXPORT Handle(Graphic3d_ShaderProgram) Graphic3d_ShaderManager::getBgSkydomeProgram() const

+    OpenGl_FrameBuffer::BufferDump(aCtx, aFBO, *aSide, Graphic3d_BufferType::Graphic3d_BT_RGBA);

+float smoothStarField (vec2 theSamplePos)

+float smoothNoise (vec3 p)
+{
+    vec3 i = floor (p);

+float clouds (in vec3 aTs, in float theTime)

+vskydome -size 128 -cloud 0.3 -sunDir 1.0 0.5 0.0
+vbackground -sky
+vaxo
+vdump $imagedir/${casename}.png