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       SoShaderObject -


       #include <Inventor/nodes/SoShaderObject.h>

       Inherits SoNode.

       Inherited by SoFragmentShader, SoGeometryShader, and SoVertexShader.

   Public Types

   Public Member Functions
       virtual SoType getTypeId (void) const
           Returns the type identification of an object derived from a class inheriting SoBase.
           This is used for run-time type checking and 'downward' casting.
       virtual void GLRender (SoGLRenderAction *action)
       virtual void search (SoSearchAction *action)
       void updateParameters (SoState *state)
       SourceType getSourceType (void) const
       SbString getSourceProgram (void) const

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static void initClass (void)

   Public Attributes
       SoSFBool isActive
       SoSFEnum sourceType
       SoSFString sourceProgram
       SoMFNode parameter

   Protected Member Functions
       virtual const SoFieldData * getFieldData (void) const
       SoShaderObject (void)
       virtual ~SoShaderObject ()
       virtual SbBool readInstance (SoInput *in, unsigned short flags)

   Static Protected Member Functions
       static const SoFieldData ** getFieldDataPtr (void)

   Additional Inherited Members

Detailed Description

       The SoShaderObject class is the superclass for all shader classes in Coin.

       See Shaders in Coin  for more information on how to set up a scene graph with shaders.

       See Also:

Member Enumeration Documentation

   enum SoShaderObject::SourceType
       Used for enumerating the shader types in sourceProgram.


              Specifies an ARB shader.

              Specifies a Cg shader program.

              Specifies a GLSL program.

              Shader should be loaded from the file in sourceProgram.

Constructor & Destructor Documentation

   SoShaderObject::SoShaderObject (void) [protected]

   SoShaderObject::~SoShaderObject () [protected],  [virtual]

Member Function Documentation

   SoType SoShaderObject::getTypeId (void) const [virtual]
       Returns the type identification of an object derived from a class inheriting SoBase. This
       is used for run-time type checking and 'downward' casting. Usage example:

       void foo(SoNode * node)
         if (node->getTypeId() == SoFile::getClassTypeId()) {
           SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type

       For application programmers wanting to extend the library with new nodes, engines,
       nodekits, draggers or others: this method needs to be overridden in all subclasses. This
       is typically done as part of setting up the full type system for extension classes, which
       is usually accomplished by using the pre-defined macros available through for instance
       Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes),
       Inventor/engines/SoSubEngine.h (for engine classes) and so on.

       For more information on writing Coin extensions, see the class documentation of the
       toplevel superclasses for the various class groups.

       Implements SoBase.

       Reimplemented in SoGeometryShader, SoFragmentShader, and SoVertexShader.

   const SoFieldData * SoShaderObject::getFieldData (void) const [protected],  [virtual]
       Returns a pointer to the class-wide field data storage object for this instance. If no
       fields are present, returns NULL.

       Reimplemented from SoFieldContainer.

       Reimplemented in SoGeometryShader, SoFragmentShader, and SoVertexShader.

   void SoShaderObject::GLRender (SoGLRenderAction *action) [virtual]
       Action method for the SoGLRenderAction.

       This is called during rendering traversals. Nodes influencing the rendering state in any
       way or who wants to throw geometry primitives at OpenGL overrides this method.

       Reimplemented from SoNode.

       Reimplemented in SoGeometryShader.

   void SoShaderObject::search (SoSearchAction *action) [virtual]
       Action method for SoSearchAction.

       Compares the search criteria from the action to see if this node is a match. Searching is
       done by matching up all criteria set up in the SoSearchAction -- if any of the requested
       criteria is a miss, the search is not deemed successful for the node.

       See Also:

       Reimplemented from SoNode.

   void SoShaderObject::updateParameters (SoState *state)
       Used internally to update shader paramters.

   SoShaderObject::SourceType SoShaderObject::getSourceType (void) const
       Returns the shader type detected in sourceProgram.

   SbString SoShaderObject::getSourceProgram (void) const
       Returns the actual shader program.

   SbBool SoShaderObject::readInstance (SoInput *in, unsigned shortflags) [protected],  [virtual]
       This method is mainly intended for internal use during file import operations.

       It reads a definition of an instance from the input stream in. The input stream state
       points to the start of a serialized / persistant representation of an instance of this
       class type.

       TRUE or FALSE is returned, depending on if the instantiation and configuration of the new
       object of this class type went ok or not. The import process should be robust and handle
       corrupted input streams by returning FALSE.

       flags is used internally during binary import when reading user extension nodes, group
       nodes or engines.

       Reimplemented from SoNode.

Member Data Documentation

   SoSFBool SoShaderObject::isActive
       Enabled/disables the shader. Default value is TRUE.

   SoSFEnum SoShaderObject::sourceType
       The type of shader.

   SoSFString SoShaderObject::sourceProgram
       The shader program, or a file name if the shader should be loaded from a file. If the
       shader is loaded from a file, the shader type is identified by the file extension. .glsl
       for GLSL shaders, .cg for Cg shaders, and .vp and .fp for ARB shaders.

   SoMFNode SoShaderObject::parameter
       The shader program parameters.


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