NAME

       SoGeometryShader -

       The SoGeometryShader class is used for loading geometry shader programs.

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

SYNOPSIS

       #include <Inventor/nodes/SoGeometryShader.h>

       Inherits SoShaderObject.

   Public Types
       enum InputType { POINTS_IN, LINES_IN, TRIANGLES_IN }
       enum OutputType { POINTS_OUT, LINE_STRIP_OUT, TRIANGLE_STRIP_OUT }

   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.
       SoGeometryShader (void)
       virtual ~SoGeometryShader ()
       virtual void GLRender (SoGLRenderAction *action)

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static void initClass (void)
       static SbBool isSupported (SourceType sourceType)

   Public Attributes
       SoSFEnum inputType
       SoSFEnum outputType
       SoSFInt32 maxEmit

   Protected Member Functions
       virtual const SoFieldData * getFieldData (void) const

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

   Additional Inherited Members

Detailed Description

       The SoGeometryShader class is used for loading geometry shader programs.

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

       FILE FORMAT/DEFAULTS:

       GeometryShader {
         isActive TRUE
         sourceType FILENAME
         sourceProgram ""
         parameter []
         inputType TRIANGLES_IN
         outputType TRIANGLE_STRIP_OUT
         maxEmit 8
       }

       See Also:
           SoShaderObject

           SoShaderProgram

       Since:
           Coin 2.5

Member Enumeration Documentation

   enum SoGeometryShader::InputType
       Enumerates the input types.

       Enumerator

       POINTS_IN
              Shader uses points as input.

       LINES_IN
              Shader uses lines as input.

       TRIANGLES_IN
              Shader uses triangles as input. OpenGL will automatically convert quads and
              polygons into triangles.

   enum SoGeometryShader::OutputType
       Enumerates the output types.

       Enumerator

       POINTS_OUT
              Shader generates points.

       LINE_STRIP_OUT
              Shader generates line strips.

Constructor & Destructor Documentation

   SoGeometryShader::SoGeometryShader (void)
       Constructor.

   SoGeometryShader::~SoGeometryShader () [virtual]
       Destructor.

Member Function Documentation

   SoType SoGeometryShader::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.

       Reimplemented from SoShaderObject.

   const SoFieldData * SoGeometryShader::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 SoShaderObject.

   void SoGeometryShader::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 SoShaderObject.

   SbBool SoGeometryShader::isSupported (SourceTypesourceType) [static]
       Returns a boolean indicating whether the requested source type is supported by the OpenGL
       driver or not.

       Beware: To get a correct answer, a valid OpenGL context must be available.

Member Data Documentation

   SoSFEnum SoGeometryShader::inputType
       The type of geometry used as input to the shader. Default value is TRIANGLES_IN.

   SoSFEnum SoGeometryShader::outputType
       The type of geometry generated from the shader. Default value is TRIANGLE_FAN_OUT.

   SoSFInt32 SoGeometryShader::maxEmit
       The maximum number of vertices emitted from the shader. Default value is 8. This
       corresponds to the GL_GEOMETRY_VERTICES_OUT_EXT enum.

Author

       Generated automatically by Doxygen for Coin from the source code.