Ogre::GLSLProgramManager Class Reference

Ogre assumes that there are separate programs to deal with but GLSL has one program object that represents the active shader objects during a rendering state. More...

#include <OgreGLSLProgramManager.h>

Inheritance diagram for Ogre::GLSLProgramManager:

Public Member Functions
	GLSLProgramManager (const GL3PlusSupport &support)
void	extractUniformsFromGLSL (const String &src, GpuNamedConstants &constantDefs, const String &filename)
	Populate a list of uniforms based on GLSL source and store them in GpuNamedConstants. More...
void	extractUniformsFromProgram (GLuint programObject, const GpuConstantDefinitionMap *vertexConstantDefs, const GpuConstantDefinitionMap *hullConstantDefs, const GpuConstantDefinitionMap *domainConstantDefs, const GpuConstantDefinitionMap *geometryConstantDefs, const GpuConstantDefinitionMap *fragmentConstantDefs, const GpuConstantDefinitionMap *computeConstantDefs, GLUniformReferenceList &uniformList)
	Populate a list of uniforms based on an OpenGL program object. More...

Detailed Description

Ogre assumes that there are separate programs to deal with but GLSL has one program object that represents the active shader objects during a rendering state.

GLSL shader objects are compiled separately and then attached to a program object and then the program object is linked. Since Ogre can only handle one program being active in a pass, the GLSL Link Program Manager does the same. The GLSL Link program manager acts as a state machine and activates a program object based on the active programs. Previously created program objects are stored along with a unique key in a hash_map for quick retrieval the next time the program object is required.

Constructor & Destructor Documentation

GLSLProgramManager()

Ogre::GLSLProgramManager::GLSLProgramManager

(

const GL3PlusSupport &

support

)

Member Function Documentation

extractUniformsFromGLSL()

void Ogre::GLSLProgramManager::extractUniformsFromGLSL	(	const String &	src,
		GpuNamedConstants &	constantDefs,
		const String &	filename
	)

Populate a list of uniforms based on GLSL source and store them in GpuNamedConstants.

Parameters

src	Reference to the source code.
constantDefs	The defs to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want).
filename	The file name this came from, for logging errors.

extractUniformsFromProgram()

void Ogre::GLSLProgramManager::extractUniformsFromProgram	(	GLuint	programObject,
		const GpuConstantDefinitionMap *	vertexConstantDefs,
		const GpuConstantDefinitionMap *	hullConstantDefs,
		const GpuConstantDefinitionMap *	domainConstantDefs,
		const GpuConstantDefinitionMap *	geometryConstantDefs,
		const GpuConstantDefinitionMap *	fragmentConstantDefs,
		const GpuConstantDefinitionMap *	computeConstantDefs,
		GLUniformReferenceList &	uniformList
	)

Populate a list of uniforms based on an OpenGL program object.

Parameters

programObject	Handle to the program object to query.
vertexConstantDefs	Definition of the uniforms extracted from the vertex program, used to match up physical buffer indexes with program uniforms. May be null if there is no vertex program.
fragmentConstantDefs	Definition of the uniforms extracted from the fragment program, used to match up physical buffer indexes with program uniforms. May be null if there is no fragment program.
list	The list to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want).

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

• OgreGLSLProgramManager.h