SoShaderObject (3)

#include <Inventor/nodes/SoShaderObject.h>

Inherits SoNode.

Inherited by SoFragmentShader, SoGeometryShader, and SoVertexShader.

Public Types

enum SourceType { ARB_PROGRAM, CG_PROGRAM, GLSL_PROGRAM, FILENAME }

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

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:

SoShaderProgram

enum \fBSoShaderObject::SourceType\fP

Used for enumerating the shader types in sourceProgram.

Enumerator

ARB_PROGRAM

Specifies an ARB shader.

CG_PROGRAM

Specifies a Cg shader program.

GLSL_PROGRAM

Specifies a GLSL program.

FILENAME

Shader should be loaded from the file in sourceProgram.

SoShaderObject::SoShaderObject (void)\fC [protected]\fP

Constructor.

SoShaderObject::~SoShaderObject ()\fC [protected]\fP, \fC [virtual]\fP

Destructor

\fBSoType\fP SoShaderObject::getTypeId (void) const\fC [virtual]\fP

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 \fBSoFieldData\fP * SoShaderObject::getFieldData (void) const\fC [protected]\fP, \fC [virtual]\fP

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 (\fBSoGLRenderAction\fP *action)\fC [virtual]\fP

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 (\fBSoSearchAction\fP *action)\fC [virtual]\fP

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:

SoSearchAction

Reimplemented from SoNode.

void SoShaderObject::updateParameters (\fBSoState\fP *state)

Used internally to update shader paramters.

\fBSoShaderObject::SourceType\fP SoShaderObject::getSourceType (void) const

Returns the shader type detected in sourceProgram.

\fBSbString\fP SoShaderObject::getSourceProgram (void) const

Returns the actual shader program.

SbBool SoShaderObject::readInstance (\fBSoInput\fP *in, unsigned shortflags)\fC [protected]\fP, \fC [virtual]\fP

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.

\fBSoSFBool\fP SoShaderObject::isActive

Enabled/disables the shader. Default value is TRUE.

\fBSoSFEnum\fP SoShaderObject::sourceType

The type of shader.

\fBSoSFString\fP 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.

\fBSoMFNode\fP SoShaderObject::parameter

The shader program parameters.

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