Package com.openinventor.inventor.nodes

Class SoUniformShaderParameter

java.lang.Object
com.openinventor.inventor.Inventor
com.openinventor.inventor.misc.SoBase
com.openinventor.inventor.fields.SoFieldContainer
com.openinventor.inventor.nodes.SoNode
com.openinventor.inventor.nodes.SoShaderParameter
com.openinventor.inventor.nodes.SoUniformShaderParameter
All Implemented Interfaces:
SafeDisposable
Direct Known Subclasses:
SoShaderParameter1f, SoShaderParameter1i, SoShaderParameter2f, SoShaderParameter2i, SoShaderParameter3f, SoShaderParameter3i, SoShaderParameter4f, SoShaderParameter4i, SoShaderParameterArray1f, SoShaderParameterArray1i, SoShaderParameterArray2f, SoShaderParameterArray2i, SoShaderParameterArray3f, SoShaderParameterArray3i, SoShaderParameterArray4f, SoShaderParameterArray4i, SoShaderParameterMatrix, SoShaderParameterMatrix3, SoShaderParameterMatrixArray, SoShaderStateMatrixParameter
public abstract class SoUniformShaderParameter extends SoShaderParameter
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.setValue( "scale" );
   parameterNode.value.setValue(2, 2, 2);
 
 SoVertexShader vertexShader = new SoVertexShader();
   vertexShader.sourceProgram.setValue( "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.setValue( "scale" );
   parameterNode.value.setValue(2, 2, 2);
 root.addChild( parameterNode ); // Affects all subsequent shaders
 
 SoVertexShader vertexShader = new SoVertexShader();
   vertexShader.sourceProgram.setValue( "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: