SoUniformShaderParameter Class Reference
[Shaders]

Abstract base class for all uniform shader parameter nodes. More...

#include <Inventor/nodes/SoShaderParameter.h>

Inheritance diagram for SoUniformShaderParameter:

List of all members.

Public Member Functions
virtual SoType	getTypeId () const
virtual bool	isEqual (const SoUniformShaderParameter *param) const =0
Static Public Member Functions
static SoType	getClassTypeId ()

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Detailed Description

Abstract base class for all uniform shader parameter nodes.

This is the abstract class from which all the uniform shader parameter nodes, e.g. SoShaderParameter1i, are derived.

These nodes allow users to provide uniform parameters to a given shader object, e.g. SoFragmentShader.

Uniform shader parameter nodes are usually added to the shader object's parameter field to affect only that specific shader program. They can also be inserted in the scene graph after an SoShaderProgram. In this case they affect whatever shader program is in effect when a shape is rendered.

Each parameter is defined by the following properties:

• name and/or identifier,
• value.

See the base class SoShaderParameter to get information about how to specify the name and/or identifier of a parameter.

The following examples show how to set a parameter named "scale" in two different ways.

EXAMPLE

In this case, a uniform parameter is added to a specific shader program:

     SoShaderParameter3f *parameterNode = new SoShaderParameter3f();
       parameterNode->name = "scale";
       parameterNode->value.setValue(2,2,2);

     SoVertexShader* vertexShader = new SoVertexShader();
       vertexShader->sourceProgram = "filename.glsl";
       vertexShader->parameter.set1Value( 0, parameterNode ); // Affects this shader

     SoShaderProgram* shaderProgram = new SoShaderProgram();
       shaderProgram->shaderObject.set1Value( 0, vertexShader );
     root->addChild(shaderProgram);

EXAMPLE

This code sets a uniform parameter with an SoShaderParameter included in the scene graph:

     SoShaderParameter3f *parameterNode = new SoShaderParameter3f();
       parameterNode->name = "scale";
       parameterNode->value.setValue(2,2,2);
     root->addChild( parameterNode ); // Affects all subsequent shaders

     SoVertexShader* vertexShader = new SoVertexShader();
       vertexShader->sourceProgram = "filename.glsl";

     SoShaderProgram* shaderProgram = new SoShaderProgram();
       shaderProgram->shaderObject.set1Value( 0, vertexShader );
     root->addChild(shaderProgram);

FILE FORMAT/DEFAULT

This is an abstract class. See the reference page of a derived class for the format and default values.

SEE ALSO

SoShaderParameter, SoVertexShaderParameter, SoShaderParameter1f, SoShaderParameter1i, SoShaderParameter2f, SoShaderParameter2i, SoShaderParameter3f, SoShaderParameter3i, SoShaderParameter4f, SoShaderParameter4i, SoShaderParameterArray1f, SoShaderParameterArray1i, SoShaderParameterArray2f, SoShaderParameterArray2i, SoShaderParameterArray3f, SoShaderParameterArray3i, SoShaderParameterArray4f, SoShaderParameterArray4i, SoShaderParameterMatrix, SoShaderParameterMatrixArray, SoShaderStateMatrixParameter, SoShaderObject, SoShaderProgram.

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Member Function Documentation

static SoType SoUniformShaderParameter::getClassTypeId

(

)

[static]

Returns the type identifier for this class.

Reimplemented from SoShaderParameter.

Reimplemented in SoShaderParameter1f, SoShaderParameter1i, SoShaderParameter2f, SoShaderParameter2i, SoShaderParameter3f, SoShaderParameter3i, SoShaderParameter4f, SoShaderParameter4i, SoShaderParameterArray1f, SoShaderParameterArray1i, SoShaderParameterArray2f, SoShaderParameterArray2i, SoShaderParameterArray3f, SoShaderParameterArray3i, SoShaderParameterArray4f, SoShaderParameterArray4i, SoShaderParameterMatrix, SoShaderParameterMatrix3, SoShaderParameterMatrixArray, and SoShaderStateMatrixParameter.

virtual SoType SoUniformShaderParameter::getTypeId

(

)

const [virtual]

Returns the type identifier for this specific instance.

Reimplemented from SoShaderParameter.

Reimplemented in SoShaderParameter1f, SoShaderParameter1i, SoShaderParameter2f, SoShaderParameter2i, SoShaderParameter3f, SoShaderParameter3i, SoShaderParameter4f, SoShaderParameter4i, SoShaderParameterArray1f, SoShaderParameterArray1i, SoShaderParameterArray2f, SoShaderParameterArray2i, SoShaderParameterArray3f, SoShaderParameterArray3i, SoShaderParameterArray4f, SoShaderParameterArray4i, SoShaderParameterMatrix, SoShaderParameterMatrix3, SoShaderParameterMatrixArray, and SoShaderStateMatrixParameter.

virtual bool SoUniformShaderParameter::isEqual

(

const SoUniformShaderParameter *

param

)

const [pure virtual]

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The documentation for this class was generated from the following file:

• Inventor/nodes/SoShaderParameter.h