OGRE-Next  3.0.0unstable
Object-Oriented Graphics Rendering Engine
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
srcReference to the source code.
constantDefsThe defs to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want).
filenameThe 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
programObjectHandle to the program object to query.
vertexConstantDefsDefinition 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.
fragmentConstantDefsDefinition 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.
listThe list to populate (will not be cleared before adding, clear it yourself before calling this if that's what you want).

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