OpenGL中的功能与OSG对应功能 （摘）

将OpenGL中的功能与OSG对应功能进行列举：

OpenGL function	OpenSceneGraph implementation
glClear( GLbitfield mask )	osg::Camera::setClearMask(GLbitfield mask) osg::GraphicsContext::setClearMask(GLbitfield mask) osg::ClearNode::setClearMask(GLbitfield mask) osg::RenderStage::setClearMask(GLbitfield mask)
glClearColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)	osg::Camera::setClearColor(const osg::Vec4& color) osgUtil::SceneView::setClearColor(const osg::Vec4& color)
glClearDepth	osg::Camera::setClearDepth(double depth)
glClearStencil	osg::Camera::setClearStencil(int stencil)
State Attributes
glAlphaFunc( GLenum func, GLclampf ref )	osg::AlphaFunc(ComparisonFunction func, float ref)
glBlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)	osg::BlendColor(const osg::Vec4& constantColor)
glBlendFunc( GLenum sfactor, GLenum dfactor)	osg::BlendFunc(GLenum source, GLenum destination, GLenum source_alpha, GLenum destination_alpha)
glBlendEquation(GLenum mode)	osg::BlendEquation(Equation equation)
glClampColor(GLenum target, GLenum mode)	osg::ClampColor(GLenum vertexMode, GLenum fragmentMode, GLenum readMode);
glColorMask( GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha )	osg::ColorMask(bool red, bool green, bool blue, bool alpha);
glMatrixMode( GL_COLOR )	osg::ColorMatrix()
glCullFace(GLenum mode)	osg::CullFace(Mode mode)
glDepthFunc( GLenum func) glDepthRange( GLclampd zNear, GLclampd zFar ) glDepthMask( GLboolean flag )	osg::Depth(Function func, double zNear, double zFar, bool writeMask)
glFog*( GLenum pname, GLfloat param ) glFog*v(GLenum pname, const GLfloat *params )	osg::Fog();
glFogf( GL_FOG_MODE, GLfloat param )	osg::Fog::setMode( Mode mode )
glFogf( GL_FOG_DENSITY, GLfloat param )	osg::Fog::setDensity( float density )
glFogf( GL_FOG_START, GLfloat param )	osg::Fog::setStart( float start )
glFogf( GL_FOG_END, GLfloat param )	osg::Fog::setEnd( float end )
glFogf( GL_FOG_INDEX, GLfloat param )	Color indexing not supported
glFogfv(GL_FOG_COLOR, const GLfloat *params )	osg::Fog::setColor( const Vec4 &color )
glFogi(GL_FOG_COORDINATE_SOURCE, GLenum mode)	osg::Fog::setFogCoordinateSource(GLint source)
glFrontFace( GLenum mode )	osg::FrontFace(Mode face)
glHint( GLenum target, GLenum mode )	osg::Hint(GLenum target, GLenum mode)
glLight*(GLenum light, GLenum pname, GLfloat param ) glLight*v( GLenum light, GLenum pname, const GLfloat *params)	osg::Light(unsigned int lightnum)
glLightfv( GLenum light, GL_AMBIENT, const GLfloat *params)	osg::Light::setAmbient( const Vec4& ambient )
glLightfv( GLenum light, GL_DIFFUSE, const GLfloat *params)	osg::Light::setDiffuse( const Vec4& diffuse )
glLightfv( GLenum light, GL_SPECULAR, const GLfloat *params)	osg::Light::setSpecular( const Vec4& specular )
glLightfv( GLenum light, GL_POSITION, const GLfloat *params)	osg::Light::setPosition( const Vec4& position )
glLightfv( GLenum light, GL_SPOT_DIRECTION, const GLfloat *params)	osg::Light::setDirection( const Vec3& direction )
glLightf(GLenum light, GL_CONSTANT_ATTENUATION, GLfloat param )	osg::Light::setConstantAttenuation( float constant_attenuation )
glLightf(GLenum light, GL_LINEAR_ATTENUATION, GLfloat param )	osg::Light::setLinearAttenuation ( float linear_attenuation )
glLightf(GLenum light, GL_QUADRATIC_ATTENUATION, GLfloat param )	osg::Light::setQuadraticAttenuation ( float quadratic_attenuation )
glLightf(GLenum light, GL_SPOT_EXPONENT, GLfloat param )	osg::Light::setSpotExponent( float spot_exponent )
glLightf(GLenum light, GL_SPOT_CUTOFF, GLfloat param )	osg::Light::setSpotCutoff( float spot_cutoff )
glLightModel*( GLenum pname, GLfloat param ) glLightModel*v( GLenum pname, const GLfloat *params )	osg::LightModel()
glLightModelfv( GL_LIGHT_MODEL_AMBIENT, const GLfloat *params )	osg::LightModel::setAmbientIntensity(const osg::Vec4& ambient)
glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GLint param)	osg::LightModel::setColorControl(ColorControl cc)
glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GLint param )	osg::LightModel::setLocalViewer(bool localViewer)
glLightModeli( GL_LIGHT_MODEL_TWO_SIDE, GLint param )	osg::LightModel::setTwoSided(bool twoSided)
glLineStipple( GLint factor, GLushort pattern )	osg::LineStipple(GLint factor, GLushort pattern)
glLineWidth( GLfloat width )	osg::LineWidth(float width=1.0f)
glLogicOp( GLenum opcode )	osg::LogicOp(Opcode opcode)
glMaterialf(GLenum face, GLenum pname, GLfloat param )	osg::Material()
	osg::Multisample()
	osg::PolygonMode(Face face,Mode mode)
	osg::PolygonOffset(float factor, float units)
	osg::PolygonStipple(const GLubyte* mask)
	osg::Scissor(int x,int y,int width,int height)
	osg::ShadeModel(Mode mode)
glStencilFunc( GLenum func, GLint ref, GLuint mask )	osg::Stencil::setFunction(Function func,int ref,unsigned int mask)
glStencilMask( GLuint mask )	osg::Stencil::setOperation(Operation sfail, Operation zfail, Operation zpass)
glStencilOp( GLenum fail, GLenum zfail, GLenum zpass )
	osg::StencilTwoSided()
glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, ...) glTexEnvfv( GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, ...)	osg::TexEnv(Mode mode)
glTexEnvi( GL_TEXTURE_ENV, ...) Texture combiners extension	osg::TexEnvCombine()
glTexEnvf(GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, ...)	osg::TexEnvFilter(float lodBias)
glTexGen_( GLenum coord, GLenum pname, GLdouble param )	osg::TexGen() osg::TexGenNode()
glMatrixMode( GL_TEXTURE )	osg::TexMat(const Matrix& matrix)
glTexImage1D( GL_TEXTURE_1D, ...)	osg::Texture1D()
glTexImage2D( GL_TEXTURE_2D, ...)	osg::Texture2D(Image* image)
glTexImage3D( GL_TEXTURE_2D_ARRAY_EXT, ...)	osg::Texture2DArray()
glTexImage3D( GL_TEXTURE_3D, ...)	osg::Texture3D()
glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_X, ...) glTexImage2D( GL_TEXTURE_CUBE_MAP_NEGATIVE_X, ...) glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_Y, ...) glTexImage2D( GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, ...) glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_Z, ...) glTexImage2D( GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, ...)	osg::TextureCubeMap()
glTexImage2D( GL_TEXTURE_RECTANGLE, ...)	osg::TextureRectangle(Image* image)
glViewport( GLint x, GLint y, GLsizei width, GLsizei height )	osg::Viewport(value_type x,value_type y,value_type width,value_type height)