Wizt::GLImageTileProcessor Struct Reference

An interceptor class for rendering, allows to process pixels before they are saved to disk. More...

#include <ocean/GLvish/GLImageTileProcessor.hpp>

Inheritance diagram for Wizt::GLImageTileProcessor:

Public Member Functions
virtual RefPtr< GLTexture2D >	createFrameTexture (int Width, int Height)
	If we want to render a frame into a texture, this function must return a texture object.
virtual string	FragmentShaderCode () const
	GLImageTileProcessor ()
	Constructor.
virtual void	renderFrameTexture (GLTexture2D &FrameData)
	Once the scene has been rendered into the specified texture, it needs to be rendered to the current frame buffer.
	~GLImageTileProcessor ()
	Destructor.
Public Member Functions inherited from Wizt::ImageTileProcessor
	ImageTileProcessor ()
	Construct it.
virtual void	process (VGrabContext &, ImageTile &theImageTile)
	Process a tile of an image.
	~ImageTileProcessor ()
	Destroy it.
Public Member Functions inherited from MemCore::ReferenceBase< ImageTileProcessor >
auto	getObjectCountID () const noexcept
	Get a unique ID for this object in the given domain.
bool	isIdentical (const WeakPtr< ImageTileProcessor, ImageTileProcessor > &PossibleSelf) const noexcept
	Check if this object is identical to the one used by the given pointer.
void	mkAutoDestructive ()
	Marks this object as being automatically destructed, e.g.
refcount_t	refcount () const noexcept
	The strong reference count.
	ReferenceBase (ImageTileProcessor *that) noexcept
	Constructor, initializes reference counter to zero.
const auto &	self () const
	Return weak pointer to the object self.
refcount_t	wrefcount () const noexcept
	The weak reference count.

Additional Inherited Members
Public Types inherited from MemCore::ReferenceBase< ImageTileProcessor >
using	reference_domain_t = ImageTileProcessor
	The type of the base class.
using	SelfPtr_t = WeakPtr< ImageTileProcessor, ImageTileProcessor >
	Type for a pointer to this object itself.
Protected Member Functions inherited from MemCore::ReferenceBase< ImageTileProcessor >
virtual void	extremeUnction ()
	A virtual function that will be called just before the object is destroyed.
ReferenceBase &	operator= (const ReferenceBase &R)
	Protected assignment operator (should not be called).
void	suicide ()
	Delete this.
virtual	~ReferenceBase ()
	Virtual destructor.

Detailed Description

An interceptor class for rendering, allows to process pixels before they are saved to disk.

Member Function Documentation

createFrameTexture()

RefPtr< GLTexture2D > Wizt::GLImageTileProcessor::createFrameTexture ( int  Width, int  Height  )

virtual

If we want to render a frame into a texture, this function must return a texture object.

It must be of the provided size, and not have any data associated. Such texture objects are created via the GLTexture2D::reserve() function.

Note that this function will be called within an OpenGL context.

FragmentShaderCode()

string Wizt::GLImageTileProcessor::FragmentShaderCode ( ) const

virtual

       Source code of the fragment shader that is called for each
       pixel. It must read colors from a 2D texture called "frame"
       Simple default code is like this:
       @code

uniform sampler2D frame; void main (void) { vec4 Color = texture2D(frame, gl_TexCoord[0].xy); gl_FragColor = Color; }

Referenced by renderFrameTexture().

renderFrameTexture()

void Wizt::GLImageTileProcessor::renderFrameTexture ( GLTexture2D &  FrameData )

virtual

Once the scene has been rendered into the specified texture, it needs to be rendered to the current frame buffer.

This function is responsible for doing so, whereby it may call a shader to transform the pixels.

References Wizt::EnableTexture::enable(), and FragmentShaderCode().