Propane::CopyTextureRenderTarget Class Reference

An implementation of the TextureRenderTarget that uses glCopyTexSubImage2D and the like; this is intended for hardware that does not support FBO. It is dramatically slower and uglier. More...

#include <PropaneFramebuffer.h>

Inheritance diagram for Propane::CopyTextureRenderTarget:

List of all members.

Public Member Functions
virtual void	begin ()
virtual void	end ()
	CopyTextureRenderTarget (int w, int h)
virtual GLuint *	getRenderTexture ()
virtual void	bindTexture ()
	Call this method to just bind the containing texture directly to the current texture context -- supports texture rectangle and non-standard textures too.
virtual void	unbindTexture ()
	Call this method to unbind the containing texture.
Protected Member Functions
virtual void	createTexture (int w, int h)
	Create the proper RGBA + depth texture for this use.
Protected Attributes
int	realWidth
	The "real" width of the texture (usually the closest power of 2) (in pixels).
int	realHeight
	The "real" height of the texture (usually the closest power of 2) (in pixels).
GLuint	tex
	The internal texture.

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Detailed Description

An implementation of the TextureRenderTarget that uses glCopyTexSubImage2D and the like; this is intended for hardware that does not support FBO. It is dramatically slower and uglier.

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Constructor & Destructor Documentation

Propane::CopyTextureRenderTarget::CopyTextureRenderTarget (  int  w, int  h )  [inline]

Basic constructor for CopyTextureRenderTarget: initializes texture. Instead of calling this directly, use getNewTextureRenderTarget to get the specific texture rendering target for your hardware. Parameters: w  The width of the window, in pixels. h  The height of the window, in pixels.

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Member Function Documentation

virtual void Propane::CopyTextureRenderTarget::begin (   )  [inline, virtual]

Begin rendering to texture; every GL call after this one will render itself into the raw texture handle that we have retained. Implements Propane::TextureRenderTarget.

virtual void Propane::CopyTextureRenderTarget::end (   )  [inline, virtual]

Stop rendering to texture; after this call completes the texture should be updated with whatever calls we made since begin(). Implements Propane::TextureRenderTarget.

virtual GLuint* Propane::CopyTextureRenderTarget::getRenderTexture (   )  [inline, virtual]

Get the raw texture for later use Returns: A pointer to the raw texture, or NULL if the render failed. Implements Propane::TextureRenderTarget.

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

• PropaneFramebuffer.h

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