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Usage
vtkShaderProgram is a superclass for managing Hardware
Shaders defined in the XML Material file and interfacing VTK
to those shaders. It's concrete descendants are responsible
for installing vertex and fragment programs to the graphics
hardware.
.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
Methods
The class vtkShaderProgram has several methods that can be
used. They are listed below. Note that the documentation is
translated automatically from the VTK sources, and may not
be completely intelligible. When in doubt, consult the VTK
website. In the methods listed below, 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.
* FreeMat_Documentation
* Visualization_Toolkit_Rendering_Classes
* Generated on Thu Jul 25 2013 17:18:35 for FreeMat by
doxygen_ 1.8.1.1
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