GLSL Shader. More...

#include <vtkGLSLShader.h>

Inheritance diagram for vtkGLSLShader:

Collaboration diagram for vtkGLSLShader:

Public Types
typedef vtkShader	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkGLSLShader *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
virtual int	Compile ()
unsigned int	GetHandle ()

virtual void	SetProgram (unsigned int)
virtual unsigned int	GetProgram ()
Static Public Member Functions
static vtkGLSLShader *	New ()
static int	IsTypeOf (const char *type)
static vtkGLSLShader *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
int	IsShader ()
int	IsCompiled ()
void	LoadShader ()
virtual void	SetSamplerParameter (const char name, vtkTexture texture, int textureIndex)

virtual void	SetUniformParameter (const char name, int numValues, const int value)
virtual void	SetUniformParameter (const char name, int numValues, const float value)
virtual void	SetUniformParameter (const char name, int numValues, const double value)

virtual void	SetMatrixParameter (const char name, int numValues, int order, const float value)
virtual void	SetMatrixParameter (const char name, int numValues, int order, const double value)
virtual void	SetMatrixParameter (const char name, const char state_matix_type, const char *transform_type)
Protected Attributes
unsigned int	Program
unsigned int	Shader
virtual void	ReleaseGraphicsResources (vtkWindow *)
	vtkGLSLShader ()
virtual	~vtkGLSLShader ()

Detailed Description

GLSL Shader.

vtkGLSLShader is a concrete class that creates and compiles hardware shaders written in the OpenGL Shadering Language (GLSL, OpenGL2.0). While step linking a vertex and a fragment shader is performed by vtkGLSLShaderProgram, all shader parameters are initialized in this class.

vtkOpenGLExtensionManager:: All OpenGL calls are made through vtkOpenGLExtensionManager.

Supported Basic Shader Types::: Scalar Types uniform float uniform int uniform int -- boolean scalar not yet tested

Supported Basic Shader Types::: Vector Types: uniform vec{2|3|4} uniform ivec{2|3|4} uniform bvec{2|3|4} -- boolean vector not yet tested

Supported Basic Shader Types::: Matrix Types: uniform mat{2|3|4}

Supported Basic Shader Types::: Texture Samplers: sample1D -- Not yet implemented in this cless. sample2D -- Not yet implemented in this class. sample3D -- Not yet implemented in this class. sampler1DShadow -- Not yet implemented in this class. sampler1DShadow -- Not yet implemented in this class.

Supported Basic Shader Types::: User-Defined structures: uniform struct NOTE: these must be defined and declared outside of the 'main' shader function.

Thanks:: Shader support in VTK includes key contributions by Gary Templet at Sandia National Labs.

Definition at line 88 of file vtkGLSLShader.h.

Member Typedef Documentation

typedef vtkShader vtkGLSLShader::Superclass

Reimplemented from vtkShader.

Definition at line 92 of file vtkGLSLShader.h.

Constructor & Destructor Documentation

vtkGLSLShader::vtkGLSLShader ( ) [protected]

Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release.

virtual vtkGLSLShader::~vtkGLSLShader ( ) [protected, virtual]

Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release.

Member Function Documentation

static vtkGLSLShader* vtkGLSLShader::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkObject.

static int vtkGLSLShader::IsTypeOf ( const char * name ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkShader.

virtual int vtkGLSLShader::IsA ( const char * name ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkShader.

static vtkGLSLShader* vtkGLSLShader::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkShader.

virtual vtkObjectBase* vtkGLSLShader::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkShader.

vtkGLSLShader* vtkGLSLShader::NewInstance ( ) const

Reimplemented from vtkShader.

void vtkGLSLShader::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)		`[virtual]`

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkShader.

virtual int vtkGLSLShader::Compile ( ) [virtual]

Called to compile the shader code. The subclasses must only compile the code in this method. Returns if the compile was successful. Subclasses should compile the code only if it was not already compiled.

Implements vtkShader.

unsigned int vtkGLSLShader::GetHandle ( ) [inline]

The vtkGLSLShaderProgram needs the shader handle for attaching.

Definition at line 102 of file vtkGLSLShader.h.

virtual void vtkGLSLShader::SetProgram ( unsigned int ) [virtual]

The Shader needs the id of the ShaderProgram to obtain uniform variable locations. This is set by vtkGLSLShaderProgram.

virtual unsigned int vtkGLSLShader::GetProgram ( ) [virtual]

The Shader needs the id of the ShaderProgram to obtain uniform variable locations. This is set by vtkGLSLShaderProgram.

virtual void vtkGLSLShader::ReleaseGraphicsResources ( vtkWindow * ) [virtual]

Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release.

Reimplemented from vtkShader.

int vtkGLSLShader::IsShader ( ) [protected]

int vtkGLSLShader::IsCompiled ( ) [protected]

void vtkGLSLShader::LoadShader ( ) [protected]

Create an empty Shader context.

virtual void vtkGLSLShader::SetUniformParameter	(	const char *	name,
		int	numValues,
		const int *	value
	)		`[protected, virtual]`

Equivalent to cgGLSetParameter and glUniform.

Implements vtkShader.

virtual void vtkGLSLShader::SetUniformParameter	(	const char *	name,
		int	numValues,
		const float *	value
	)		`[protected, virtual]`

Equivalent to cgGLSetParameter and glUniform.

Implements vtkShader.

virtual void vtkGLSLShader::SetUniformParameter	(	const char *	name,
		int	numValues,
		const double *	value
	)		`[protected, virtual]`

Equivalent to cgGLSetParameter and glUniform.

Implements vtkShader.

virtual void vtkGLSLShader::SetMatrixParameter	(	const char *	name,
		int	numValues,
		int	order,
		const float *	value
	)		`[protected, virtual]`

Equivalent to cgGLSetMatrixParameterfc and glUniformMatrix.

Implements vtkShader.

virtual void vtkGLSLShader::SetMatrixParameter	(	const char *	name,
		int	numValues,
		int	order,
		const double *	value
	)		`[protected, virtual]`

Equivalent to cgGLSetMatrixParameterfc and glUniformMatrix.

Implements vtkShader.

virtual void vtkGLSLShader::SetMatrixParameter	(	const char *	name,
		const char *	state_matix_type,
		const char *	transform_type
	)		`[protected, virtual]`

Equivalent to cgGLSetMatrixParameterfc and glUniformMatrix.

Implements vtkShader.

virtual void vtkGLSLShader::SetSamplerParameter	(	const char *	name,
		vtkTexture *	texture,
		int	textureIndex
	)		`[protected, virtual]`

Establishes the given texture as the uniform sampler to perform lookups on. The textureIndex argument corresponds to the indices of the textures in a vtkProperty. Subclass may have to cast the texture to vtkOpenGLTexture to obtain the GLuint for texture this texture. Subclasses must override these and perform GLSL or Cg calls.

Implements vtkShader.

Member Data Documentation

unsigned int vtkGLSLShader::Program [protected]

Definition at line 122 of file vtkGLSLShader.h.

unsigned int vtkGLSLShader::Shader [protected]

Definition at line 123 of file vtkGLSLShader.h.

The documentation for this class was generated from the following file:

dox/Rendering/OpenGL/vtkGLSLShader.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation