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occt/src/Graphic3d/Graphic3d_AlphaMode.hxx

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// Copyright (c) 2018 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _Graphic3d_AlphaMode_HeaderFile
#define _Graphic3d_AlphaMode_HeaderFile
//! Defines how alpha value of base color / texture should be treated.
enum Graphic3d_AlphaMode
{
Graphic3d_AlphaMode_Opaque = 0, //!< rendered output is fully opaque and alpha value is ignored
Graphic3d_AlphaMode_Mask, //!< rendered output is either fully opaque or fully transparent depending on the alpha value and the alpha cutoff value
Graphic3d_AlphaMode_Blend, //!< rendered output is combined with the background
Graphic3d_AlphaMode_BlendAuto = -1, //!< special value defined for backward compatibility - it is equal to Graphic3d_AlphaMode_Blend when Material transparency is not zero and Graphic3d_AlphaMode_Opaque otherwise;
// since this check ignores possible transparency defined by per-vertex colors and textures - NOT recommended to use!
};
#endif // _Graphic3d_AlphaModeHeaderFile