vl::ProjViewTranfCallbackStandard Class Reference

Updates the GL_MODELVIEW and GL_PROJECTION matrices of the fixed function pipeline in an optimized manner. More...

#include <Renderer.hpp>

Inheritance diagram for vl::ProjViewTranfCallbackStandard:

List of all members.

Public Member Functions
	ProjViewTranfCallbackStandard ()
virtual void	programFirstUse (const Renderer *, const GLSLProgram *glsl, const Transform *, const Camera *, bool first_overall)
	This function is called whenever a new GLSLProgram (or the NULL one, i.e.
virtual void	programTransfChange (const Renderer *, const GLSLProgram *glsl, const Transform *, const Camera *)
	This function is called whenever the Transform changes with respect to the current GLSLProgram (including the NULL one, i.e.

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Detailed Description

Updates the GL_MODELVIEW and GL_PROJECTION matrices of the fixed function pipeline in an optimized manner.

You usually want to install this callback if the fixed fuction pipeline is available, even when using GLSL shaders. In fact the GL_MODELVIEW and GL_PROJECTION matrices are visible from all the GLSL shaders, thus requiring fewer matrix updates compared to being forced to send projection, view and transform matrix to every single GLSLProgram at least once during the rendering!

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Constructor & Destructor Documentation

vl::ProjViewTranfCallbackStandard::ProjViewTranfCallbackStandard

(

)

[inline]

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Member Function Documentation

void ProjViewTranfCallbackStandard::programFirstUse	(	const Renderer *	caller,
		const GLSLProgram *	glsl,
		const Transform *	transform,
		const Camera *	camera,
		bool	first_overall
	)		[virtual]

This function is called whenever a new GLSLProgram (or the NULL one, i.e.

the fixed function pipeline) is being activated for the first time in the current rendering. This callback is most useful to initialize the GLSLProgram with the current projection and view matrices, besides the current Actor's transform.

Parameters:

caller	The Renderer object calling this function.
glsl	The GLSLProgram being activated. If NULL the fixed function pipeline is being activated.
transform	The transform of the current Actor being rendered.
camera	The Camera used for the rendering from which you can retrieve the projection and view matrices.
first_overall	If true it means that the rendering has just started. Useful if you want to initialized your callback object.

Implements vl::ProjViewTranfCallback.

void ProjViewTranfCallbackStandard::programTransfChange	(	const Renderer *	caller,
		const GLSLProgram *	glsl,
		const Transform *	transform,
		const Camera *	camera
	)		[virtual]

This function is called whenever the Transform changes with respect to the current GLSLProgram (including the NULL one, i.e.

the fixed function pipeline). This callback is most useful to update the GLSLProgram with the current Actor's transform matrix.

Parameters:

caller	The Renderer object calling this function.
glsl	The GLSLProgram being activated. If NULL the fixed function pipeline is being activated.
transform	The transform of the current Actor being rendered.
camera	The Camera used for the rendering from which you can retrieve the projection and view matrices.

Implements vl::ProjViewTranfCallback.

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

• C:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vl/Renderer.hpp
• C:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vl/Renderer.cpp