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123 lines
4.5 KiB
123 lines
4.5 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield |
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* |
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* This library is open source and may be redistributed and/or modified under |
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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* (at your option) any later version. The full license is in LICENSE file |
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* included with this distribution, and on the openscenegraph.org website. |
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* |
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* This library 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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* OpenSceneGraph Public License for more details. |
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*/ |
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#ifndef OSGSHADOW_SHADOWEMAP |
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#define OSGSHADOW_SHADOWEMAP 1 |
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#include <osg/Camera> |
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#include <osg/Material> |
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#include <osg/MatrixTransform> |
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#include <osg/LightSource> |
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#include <osgShadow/ShadowTechnique> |
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namespace osgShadow { |
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/** ShadowedTexture provides an implementation of shadow textures.*/ |
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class OSGSHADOW_EXPORT ShadowMap : public ShadowTechnique |
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{ |
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public : |
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ShadowMap(); |
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ShadowMap(const ShadowMap& es, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY); |
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META_Object(osgShadow, ShadowMap); |
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/** Set the texture unit that the shadow texture will be applied on.*/ |
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void setTextureUnit(unsigned int unit); |
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/** Get the texture unit that the shadow texture will be applied on.*/ |
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unsigned int getTextureUnit() const { return _shadowTextureUnit; } |
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/** set the polygon offset used initially */ |
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void setPolygonOffset(const osg::Vec2& polyOffset); |
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/** get the used polygon offset */ |
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const osg::Vec2& getPolygonOffset() const { return _polyOffset; } |
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/** Set the values for the ambient bias the shader will use.*/ |
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void setAmbientBias(const osg::Vec2& ambientBias ); |
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/** Get the values that are used for the ambient bias in the shader.*/ |
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const osg::Vec2& getAmbientBias() const { return _ambientBias; } |
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/** set the size in pixels x / y for the shadow texture.*/ |
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void setTextureSize(const osg::Vec2s& textureSize); |
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/** Get the values that are used for the ambient bias in the shader.*/ |
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const osg::Vec2s& getTextureSize() const { return _textureSize; } |
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/** Set the Light that will cast shadows */ |
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void setLight(osg::Light* light); |
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void setLight(osg::LightSource* ls); |
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typedef std::vector< osg::ref_ptr<osg::Uniform> > UniformList; |
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typedef std::vector< osg::ref_ptr<osg::Shader> > ShaderList; |
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/** Add a shader to internal list, will be used instead of the default ones */ |
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inline void addShader(osg::Shader* shader) { _shaderList.push_back(shader); } |
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/** Reset internal shader list */ |
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inline void clearShaderList() { _shaderList.clear(); } |
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/** initialize the ShadowedScene and local cached data structures.*/ |
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virtual void init(); |
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/** run the update traversal of the ShadowedScene and update any loca chached data structures.*/ |
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virtual void update(osg::NodeVisitor& nv); |
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/** run the cull traversal of the ShadowedScene and set up the rendering for this ShadowTechnique.*/ |
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virtual void cull(osgUtil::CullVisitor& cv); |
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/** Clean scene graph from any shadow technique specific nodes, state and drawables.*/ |
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virtual void cleanSceneGraph(); |
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// debug methods |
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osg::ref_ptr<osg::Camera> makeDebugHUD(); |
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protected: |
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virtual ~ShadowMap(void) {}; |
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/** Create the managed Uniforms */ |
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virtual void createUniforms(); |
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virtual void createShaders(); |
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// forward declare, interface and implementation provided in ShadowMap.cpp |
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class DrawableDrawWithDepthShadowComparisonOffCallback; |
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osg::ref_ptr<osg::Camera> _camera; |
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osg::ref_ptr<osg::TexGen> _texgen; |
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osg::ref_ptr<osg::Texture2D> _texture; |
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osg::ref_ptr<osg::StateSet> _stateset; |
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osg::ref_ptr<osg::Program> _program; |
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osg::ref_ptr<osg::Light> _light; |
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osg::ref_ptr<osg::LightSource> _ls; |
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osg::ref_ptr<osg::Uniform> _ambientBiasUniform; |
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UniformList _uniformList; |
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ShaderList _shaderList; |
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unsigned int _baseTextureUnit; |
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unsigned int _shadowTextureUnit; |
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osg::Vec2 _polyOffset; |
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osg::Vec2 _ambientBias; |
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osg::Vec2s _textureSize; |
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}; |
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} |
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#endif
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