SoVertexAttribFeedback Class |
Node to record vertex attributes from shaders into buffer objects.
Namespace: OIV.Inventor.Nodes
The SoVertexAttribFeedback type exposes the following members.
Name | Description | |
---|---|---|
SoVertexAttribFeedback | Default constructor. |
Name | Description | |
---|---|---|
AddChild | Adds a child as last one in group. | |
AffectsState | Returns true if a node has an effect on the state during traversal. | |
Callback | (Overrides SoSeparatorCallback(SoCallbackAction).) | |
ClearCacheList | (Inherited from SoSeparator.) | |
Copy | Calls Copy(false). (Inherited from SoNode.) | |
Copy(Boolean) | Creates and returns an exact copy of the node. | |
CopyFieldValues(SoFieldContainer) | Calls CopyFieldValues(fc, false). (Inherited from SoFieldContainer.) | |
CopyFieldValues(SoFieldContainer, Boolean) | Copies the contents of fc's fields into this object's fields. | |
Dispose |
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.) | |
Distribute | (Overrides SoNodeDistribute(SoDistributeAction).) | |
DoAction | (Inherited from SoSeparator.) | |
EnableNotify | Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false). | |
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. | |
FindChild | Finds index of given child within group. | |
Get | Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
GetAllFields | Returns a list of fields, including the eventIn's and eventOut's. | |
GetAlternateRep | This method is called by actions to allow the node to provide an "alternate representation" when appropriate (typically depending on the action type). | |
GetBoundingBox | (Overrides SoSeparatorGetBoundingBox(SoGetBoundingBoxAction).) | |
GetChild | Returns pointer the child node with the given index. | |
GetEventIn | Returns a the eventIn with the given name. | |
GetEventOut | Returns the eventOut with the given name. | |
GetField | Returns a the field of this object whose name is fieldName. | |
GetFieldName | Returns the name of the given field in the fieldName argument. | |
GetFields | Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
GetGeneratedPrimitivesCount | This function returns the number of generated primitives during the traversal of the sub scene graph. | |
GetHashCode |
Overrides GetHashCode().
(Inherited from SoNetBase.) | |
GetMatrix | (Overrides SoSeparatorGetMatrix(SoGetMatrixAction).) | |
GetName | Returns the name of an instance. | |
GetNumChildren | Returns number of children. | |
GetPrimitiveCount | (Overrides SoSeparatorGetPrimitiveCount(SoGetPrimitiveCountAction).) | |
GetRenderEngineMode | Returns the supported Render engine mode. | |
GetRenderUnitID | (Inherited from SoNode.) | |
GetStringName | (Inherited from SoBase.) | |
GetType | Gets the Type of the current instance. (Inherited from Object.) | |
GLRender | (Inherited from SoSeparator.) | |
GLRenderBelowPath | (Overrides SoSeparatorGLRenderBelowPath(SoGLRenderAction).) | |
GLRenderInPath | (Overrides SoSeparatorGLRenderInPath(SoGLRenderAction).) | |
GLRenderOffPath | (Overrides SoSeparatorGLRenderOffPath(SoGLRenderAction).) | |
GrabEventsCleanup | (Inherited from SoNode.) | |
GrabEventsSetup | (Inherited from SoNode.) | |
HandleEvent | (Overrides SoSeparatorHandleEvent(SoHandleEventAction).) | |
HasDefaultValues | Returns true if all of the object's fields have their default values. | |
InsertChild | Adds a child so that it becomes the one with the given index. | |
IsBoundingBoxIgnoring | Used by BoundingBoxAction to known if bounding box computation should be ignored or not. | |
IsNotifyEnabled | Notification is the process of telling interested objects that this object has changed. | |
IsOverride | Returns the state of the override flag. | |
IsSupported | This function indicates if the vertex attributes feedback feature is available on this system. | |
IsSynchronizable | Gets the ScaleViz synchronizable state of this object. | |
Pick | (Inherited from SoGroup.) | |
RayPick | (Overrides SoSeparatorRayPick(SoRayPickAction).) | |
RegisterFeedback(String, SoBufferObject) | Calls RegisterFeedback(varyingName, bufferObject, -1). | |
RegisterFeedback(String, SoBufferObject, Int32) | This function allows to attach a buffer object to a specific varying of the shader pushed on the state. | |
RemoveAllChildren | Removes all children from group. | |
RemoveChild(Int32) | Removes child with given index from group. | |
RemoveChild(SoNode) | Removes first instance of given child from group. | |
ReplaceChild(Int32, SoNode) | Replaces child with given index with new child. | |
ReplaceChild(SoNode, SoNode) | Replaces first instance of given child with new child. | |
Search | (Overrides SoSeparatorSearch(SoSearchAction).) | |
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. | |
SetName | (Inherited from SoBase.) | |
SetOverride | Turns the override flag on or off. | |
SetSynchronizable | Sets this to be a ScaleViz synchronizable object. | |
SetToDefaults | Sets all fields in this object to their default values. | |
ToString |
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.) | |
Touch | Marks an instance as modified, simulating a change to it. | |
UnregisterFeedback | This function is used to unregister a varying registered with the registerFeedback function. | |
Write | (Inherited from SoGroup.) |
Name | Description | |
---|---|---|
autoResizeBuffers | Set this field to true when the size of the recorded varyings is not known. | |
boundingBoxCaching | (Inherited from SoSeparator.) | |
boundingBoxIgnoring | Whether to ignore this node during bounding box traversal. | |
buffersMode | The buffer mode used to record the primitives. | |
disableFragmentProcessing | Turn off the fragment rasterizer. | |
fastEditing | Specifies the fast edit mode of the separator node. | |
IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) | |
pickCulling | Whether to cull during picking traversal. | |
primitiveType | The type of primitive recorded during traversal. | |
queryGeneratedPrimitivesCount | Read back the number of recorded primitives. | |
renderCaching | Obsolete. Whether to cache during rendering traversal. | |
renderCulling | Whether to cull during rendering traversal. | |
renderUnitId | Used during the ScaleViz depth compositing process, this field specifies which render unit (OIRU) will render the sub scene graph below this separator. | |
UserData |
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.) |
This node is used to record selected vertex attributes for each primitive processed by the OpenGL system. The recorded vertex attributes may be stored in separate SoGpuBufferObjects or interleaved into a single buffer object.
This node can only be used when an GLSL shader is enabled on the Open Inventor state. If the active shader contains a geometry shader the attributes are recorded from the varyings declared in it, otherwise it records the attributes from the vertex shader.
The function registerFeedback is used to specify the buffer object, which will receive the data, attached to a specified varying.
The scene graph which will be rendered during the traversal (can be any shape used as input of the geometry or vertex shader) is specified using the regular addChild function from the class OIV.Inventor.Nodes.SoSeparator.
This node provides a mechanism for the following features:
Rasterizer can be disabled to prevent rendering the generated primitives. This is useful when the main behavior is to record computed primitives from the geometry or vertex shader.
The OIV.Inventor.Devices.SoGpuBufferObject can be automatically resized to be able to record all the data.
The number of generated primitives can be retrieved after the traversal.
Limitations
The automatic resize of the buffer objects requires two traversal of the children, one to compute the number of primitives which will be generated and the actual traversal.
Most of the regular actions (except Render and Write) don't traverse the children.
VertexAttribFeedback {
disableFragmentProcessing | true |
autoResizeBuffers | false |
queryGeneratedPrimitivesCount | false |
buffersMode | SEPARATE |
primitiveType | TRIANGLES |
OIV.Inventor.Actions.SoGLRenderAction Do the actual vertex attributes feedback operation.