SoVertexShaderParameter Class

Abstract base class for all vertex shader parameter nodes.

Inheritance Hierarchy

Namespace: OIV.Inventor.Nodes
Assembly: OIV.Inventor (in OIV.Inventor.dll) Version: 2024.1.1.0 (2024.1.1)

Syntax

C++

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public class SoVertexShaderParameter : SoShaderParameter

Public Class SoVertexShaderParameter
	Inherits SoShaderParameter

public ref class SoVertexShaderParameter : public SoShaderParameter

type SoVertexShaderParameter =  
    class
        inherit SoShaderParameter
    end

The SoVertexShaderParameter type exposes the following members.

Methods

	Name	Description
	AffectsState	Returns true if a node has an effect on the state during traversal. (Inherited from SoNode.)
	Callback	(Inherited from SoNode.)
	Copy	Calls Copy(false). (Inherited from SoNode.)
	Copy(Boolean)	Creates and returns an exact copy of the node. (Inherited from SoNode.)
	CopyFieldValues(SoFieldContainer)	Calls CopyFieldValues(fc, false). (Inherited from SoFieldContainer.)
	CopyFieldValues(SoFieldContainer, Boolean)	Copies the contents of fc's fields into this object's fields. (Inherited from SoFieldContainer.)
	Dispose	Releases all resources used by SoDisposable. (Inherited from SoDisposable.)
	Distribute	(Inherited from SoNode.)
	DoAction	(Inherited from SoNode.)
	EnableNotify	Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false). (Inherited from SoFieldContainer.)
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	FieldsAreEqual	Returns true if this object's fields are exactly equal to fc's fields. (Inherited from SoFieldContainer.)
	Get	Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. (Inherited from SoFieldContainer.)
	GetAllFields	Returns a list of fields, including the eventIn's and eventOut's. (Inherited from SoFieldContainer.)
	GetAlternateRep	This method is called by actions to allow the node to provide an "alternate representation" when appropriate (typically depending on the action type). (Inherited from SoNode.)
	GetBoundingBox	(Inherited from SoNode.)
	GetEventIn	Returns a the eventIn with the given name. (Inherited from SoFieldContainer.)
	GetEventOut	Returns the eventOut with the given name. (Inherited from SoFieldContainer.)
	GetField	Returns a the field of this object whose name is fieldName. (Inherited from SoFieldContainer.)
	GetFieldName	Returns the name of the given field in the fieldName argument. (Inherited from SoFieldContainer.)
	GetFields	Appends references to all of this object's fields to resultList, and returns the number of fields appended. (Inherited from SoFieldContainer.)
	GetHashCode	Overrides GetHashCode(). (Inherited from SoNetBase.)
	GetMatrix	(Inherited from SoNode.)
	GetName	Returns the name of an instance. (Inherited from SoBase.)
	GetPrimitiveCount	(Inherited from SoNode.)
	GetRenderEngineMode	Returns the supported Render engine mode. (Inherited from SoNode.)
	GetRenderUnitID	(Inherited from SoNode.)
	GetStringName	(Inherited from SoBase.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	GLRender	(Inherited from SoNode.)
	GLRenderBelowPath	(Inherited from SoNode.)
	GLRenderInPath	(Inherited from SoNode.)
	GLRenderOffPath	(Inherited from SoNode.)
	GrabEventsCleanup	(Inherited from SoNode.)
	GrabEventsSetup	(Inherited from SoNode.)
	HandleEvent	(Inherited from SoNode.)
	HasDefaultValues	Returns true if all of the object's fields have their default values. (Inherited from SoFieldContainer.)
	IsBoundingBoxIgnoring	This method is used by getBoundingBox action traversal to know if the current node must be traversed or not, ie the bounding should be ignored. (Inherited from SoNode.)
	IsNotifyEnabled	Notification is the process of telling interested objects that this object has changed. (Inherited from SoFieldContainer.)
	IsOverride	Returns the state of the override flag. (Inherited from SoNode.)
	IsSynchronizable	Gets the ScaleViz synchronizable state of this object. (Inherited from SoBase.)
	Pick	(Inherited from SoNode.)
	RayPick	(Inherited from SoNode.)
	Search	(Inherited from SoNode.)
	Set	Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. (Inherited from SoFieldContainer.)
	SetName	(Inherited from SoBase.)
	SetOverride	Turns the override flag on or off. (Inherited from SoNode.)
	SetSynchronizable	Sets this to be a ScaleViz synchronizable object. (Inherited from SoBase.)
	SetToDefaults	Sets all fields in this object to their default values. (Inherited from SoFieldContainer.)
	ToString	Converts this SoBase structure to a human readable string. (Inherited from SoBase.)
	Touch	Marks an instance as modified, simulating a change to it. (Inherited from SoNode.)
	Write	(Inherited from SoNode.)

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Properties

	Name	Description
	identifier	Specifies the parameter's integer name which is declared and used within low-level shading programs. (Inherited from SoShaderParameter.)
	IsDisposable	ISafeDisposable interface implementation. (Inherited from SoDisposable.)
	name	Specifies the parameter's string name which is declared and used within high-level shading programs. (Inherited from SoShaderParameter.)
	UserData	Gets or sets the user data to be contained by the field container. (Inherited from SoFieldContainer.)

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Remarks

This is the abstract class from which all the vertex shader parameter nodes are derived.

These nodes allow applications to provide per-vertex parameters to shader objects.

Vertex shader parameter nodes must be inserted in the scene graph.

Each parameter is defined by the following properties:

name and/or identifier,
values.

Note that, unlike uniform parameters, the value field must contain as many values as there are vertices in the geometry to be rendered.

Caution
Whatever the type of OIV.Inventor.Nodes.SoVertexShaderParameter (int, float, short, etc...), values are always converted to "float" before being sent to the shader, so you have to use a floating type (float, vec2, vec3, vec4, ...) when declaring the vertex parameter in the shader. Some types are directly cast to float while others may be normalized. If the subclass contains a field "rangeScaling", then you can request to normalize the data before sending them to shaders.

Caution

Whatever the type of OIV.Inventor.Nodes.SoVertexShaderParameter (int, float, short, etc...), values are always converted to "float" before being sent to the shader, so you have to use a floating type (float, vec2, vec3, vec4, ...) when declaring the vertex parameter in the shader. Some types are directly cast to float while others may be normalized. If the subclass contains a field "rangeScaling", then you can request to normalize the data before sending them to shaders.

See the base class OIV.Inventor.Nodes.SoShaderParameter for information about how to specify the name and/or identifier of a parameter.

EXAMPLE

The following example shows how to set a vertex shader parameter named "scale" for each vertex in the geometry.

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int numValues = numVertices;
float[] valuesArray = new float[numValues];

SoVertexShaderParameter1f parameterNode = new SoVertexShaderParameter1f();
 parameterNode.name.Value = "scale";
 parameterNode.value.SetValues(0, valuesArray);
root.AddChild(parameterNode); // Vertex parameters always added to scene graph

SoVertexShader vertexShader = new SoVertexShader();
 vertexShader.sourceProgram.Value = "filename.glsl";

SoShaderProgram shaderProgram = new SoShaderProgram();
 shaderProgram.shaderObject[0] = vertexShader;
root.AddChild(shaderProgram);