Propane::TextureRenderTarget Class Reference

An interface enabling render-to-texture using FBO and/or glCopyTexImage depending on hardware extensions. More...

#include <PropaneFramebuffer.h>

Inheritance diagram for Propane::TextureRenderTarget:

List of all members.

Public Member Functions
	TextureRenderTarget (int width, int height)
virtual void	begin ()=0
virtual void	end ()=0
virtual GLuint *	getRenderTexture ()=0
virtual int	getWidth ()
	Get the width of the render-targeted texture.
virtual int	getHeight ()
	Get the height of the render-targeted texture.
virtual void	bindTexture ()=0
	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 ()=0
	Call this method to unbind the containing texture.
virtual void	texCoord (float s, float t)
Protected Member Functions
virtual void	createTexture (int w, int h)=0
	Create the proper RGBA + depth texture for this use.
Protected Attributes
int	textureWidth
	Width of the raw texture (in pixels).
int	textureHeight
	Height of the raw texture (in pixels).

---

Detailed Description

An interface enabling render-to-texture using FBO and/or glCopyTexImage depending on hardware extensions.

Examples:

useRenderTarget.cpp.

---

Constructor & Destructor Documentation

Propane::TextureRenderTarget::TextureRenderTarget (  int  width, int  height )  [inline]

Create a new texture and render target. Instead of calling this directly, use getNewTextureRenderTarget to get the specific texture rendering target for your hardware. Parameters: width  The width of the target texture, in pixels height  The height of the target texture, in pixels

---

Member Function Documentation

virtual void Propane::TextureRenderTarget::begin (   )  [pure virtual]

Begin rendering to texture; every GL call after this one will render itself into the raw texture handle that we have retained. Implemented in Propane::FBOTextureRenderTarget, Propane::TextureRectangleFBOTextureRenderTarget, and Propane::CopyTextureRenderTarget. Examples: useRenderTarget.cpp.

virtual void Propane::TextureRenderTarget::end (   )  [pure virtual]

Stop rendering to texture; after this call completes the texture should be updated with whatever calls we made since begin(). Implemented in Propane::FBOTextureRenderTarget, Propane::TextureRectangleFBOTextureRenderTarget, and Propane::CopyTextureRenderTarget. Examples: useRenderTarget.cpp.

virtual GLuint* Propane::TextureRenderTarget::getRenderTexture (   )  [pure virtual]

Get the raw texture for later use Returns: A pointer to the raw texture, or NULL if the render failed. Implemented in Propane::FBOTextureRenderTarget, Propane::TextureRectangleFBOTextureRenderTarget, and Propane::CopyTextureRenderTarget. Examples: useRenderTarget.cpp.

virtual void Propane::TextureRenderTarget::texCoord (  float  s, float  t )  [inline, virtual]

Call this method to look up the texture coordinate of the FBO's target texture. It uses glTexCoord2f. This is required since ARB_texture_rectangle does not use the [0,1] convention for texture coordinates. Parameters: s  The S-coordinate, from 0.0 to 1.0 inclusive t  The T-coordinate, from 0.0 to 1.0 inclusive Reimplemented in Propane::TextureRectangleFBOTextureRenderTarget.

---

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

• PropaneFramebuffer.h

---