Section: Visualization Toolkit Rendering Classes
.SECTION Shader Operations are shader library operations that are performed on individual shaders, that is, without consideration of the partner shader.
.SECTION Program Operations are shader library operations that treat the vertex and fragment shader as a single unit.
.SECTION Design This class is a Strategy pattern for 'Program' operations, which treat vertex/fragment shader pairs as a single 'Program', as required by some shader libraries (GLSL). Typically, 'Shader' operations are delegated to instances of vtkShader (managed by descendants of this class) while 'Program' operations are handled by descendants of this class, vtkCgShaderProgram, vtkGLSLShaderProgram.
To create an instance of class vtkShaderProgram, simply invoke its constructor as follows
obj = vtkShaderProgram
obj
is an instance of the vtkShaderProgram class.
string = obj.GetClassName ()
int = obj.IsA (string name)
vtkShaderProgram = obj.NewInstance ()
vtkShaderProgram = obj.SafeDownCast (vtkObject o)
vtkXMLMaterial = obj.GetMaterial ()
obj.SetMaterial (vtkXMLMaterial )
int = obj.AddShader (vtkShader shader)
obj.RemoveShader (int index)
- Remove a shader at the given index.
obj.RemoveShader (vtkShader shader)
- Removes the given shader.
vtkCollectionIterator = obj.NewShaderIterator ()
- Returns a new iterator to iterate over the shaders.
int = obj.GetNumberOfShaders ()
- Returns the number of shaders available in this
shader program.
obj.ReadMaterial ()
obj.Render (vtkActor , vtkRenderer )
obj.AddShaderVariable (string name, int numVars, int x)
obj.AddShaderVariable (string name, int numVars, float x)
obj.AddShaderVariable (string name, int numVars, double x)
obj.PostRender (vtkActor , vtkRenderer )
- Called to unload the shaders after the actor has been rendered.
obj.ReleaseGraphicsResources (vtkWindow )
- Release any graphics resources that are being consumed by this actor.
The parameter window could be used to determine which graphic
resources to release.
vtkShaderDeviceAdapter = obj.GetShaderDeviceAdapter ()
- Get the vtkShaderDeviceAdapter which can be used to execute this
shader program.