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75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_MESH_BLENDER_H
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#define NL_MESH_BLENDER_H
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#include "nel/misc/types_nl.h"
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#include "nel/3d/material.h"
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namespace NL3D
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{
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class IDriver;
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// ***************************************************************************
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/**
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* A tool class used for Alpha Blending of Meshes.
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* Actually, it takes a material, modify it and modify driver so it will be correctly rendered.
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* The backup method must be used after render, to restore the material.
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* \author Lionel Berenguier
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* \author Nevrax France
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* \date 2002
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*/
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class CMeshBlender
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{
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public:
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/// Constructor
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CMeshBlender() {}
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/// Modify the material and the driver for Global Alpha Use.
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void prepareRenderForGlobalAlpha(CMaterial &material, IDriver *drv, float globalAlpha, uint8 globalAlphaInt, bool gaDisableZWrite);
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/// Restore the material and driver in their initial state.
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void restoreRender(CMaterial &material, IDriver *drv, bool gaDisableZWrite);
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/// Same method, but special for CoarseMesh (used by CMeshMultiLod::renderMeshGeom).
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void prepareRenderForGlobalAlphaCoarseMesh(CMaterial &material, IDriver *drv, NLMISC::CRGBA color, float globalAlpha, bool gaDisableZWrite);
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/// Same method, but special for CoarseMesh (used by CMeshMultiLod::renderMeshGeom).
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void restoreRenderCoarseMesh(CMaterial &material, IDriver *drv, bool gaDisableZWrite);
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private:
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uint8 _BkOpacity;
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bool _BkZWrite;
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bool _BkBlend;
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CMaterial::TBlend _BkSrcBlend;
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CMaterial::TBlend _BkDstBlend;
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float _BkAlphaTestThreshold;
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NLMISC::CRGBA _BkupColor;
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};
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} // NL3D
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#endif // NL_MESH_BLENDER_H
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/* End of mesh_blender.h */
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