OGRE  2.0
Object-Oriented Graphics Rendering Engine
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Properties Friends Macros Groups Pages
Ogre::GLSLESProgramManagerCommon Class Reference

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

#include <OgreGLSLESProgramManagerCommon.h>

+ Inheritance diagram for Ogre::GLSLESProgramManagerCommon:
+ Collaboration diagram for Ogre::GLSLESProgramManagerCommon:

Public Member Functions

 GLSLESProgramManagerCommon (void)
 
 ~GLSLESProgramManagerCommon (void)
 
void extractConstantDefs (const String &src, GpuNamedConstants &constantDefs, const String &filename)
 Populate a list of uniforms based on GLSL ES source. More...
 
void extractUniforms (GLuint programObject, const GpuConstantDefinitionMap *vertexConstantDefs, const GpuConstantDefinitionMap *fragmentConstantDefs, GLUniformReferenceList &list, GLUniformBufferList &sharedList)
 Populate a list of uniforms based on a program object. More...
 
void optimiseShaderSource (GLSLESGpuProgram *gpuProgram)
 

Protected Types

typedef map< String, GLenum >::type StringToEnumMap
 

Protected Member Functions

void completeDefInfo (GLenum gltype, GpuConstantDefinition &defToUpdate)
 Use type to complete other information. More...
 
bool completeParamSource (const String &paramName, const GpuConstantDefinitionMap *vertexConstantDefs, const GpuConstantDefinitionMap *fragmentConstantDefs, GLUniformReference &refToUpdate)
 Find where the data for a specific uniform should come from, populate. More...
 
void parseIndividualConstant (const String &src, GpuNamedConstants &defs, String::size_type currPos, const String &filename, GpuSharedParametersPtr sharedParams)
 

Protected Attributes

GLSLESGpuProgrammActiveFragmentGpuProgram
 
GLSLESGpuProgrammActiveVertexGpuProgram
 Active objects defining the active rendering gpu state. More...
 
struct glslopt_ctx * mGLSLOptimiserContext
 
StringToEnumMap mTypeEnumMap
 

Detailed Description

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

GLSL Vertex and fragment 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 vertex program and one fragment program being active in a pass, the GLSL ES Link Program Manager does the same. The GLSL ES Link program manager acts as a state machine and activates a program object based on the active vertex and fragment program. 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.

Definition at line 54 of file OgreGLSLESProgramManagerCommon.h.

Member Typedef Documentation

Definition at line 61 of file OgreGLSLESProgramManagerCommon.h.

Constructor & Destructor Documentation

Ogre::GLSLESProgramManagerCommon::GLSLESProgramManagerCommon ( void  )
Ogre::GLSLESProgramManagerCommon::~GLSLESProgramManagerCommon ( void  )

Member Function Documentation

void Ogre::GLSLESProgramManagerCommon::completeDefInfo ( GLenum  gltype,
GpuConstantDefinition defToUpdate 
)
protected

Use type to complete other information.

bool Ogre::GLSLESProgramManagerCommon::completeParamSource ( const String paramName,
const GpuConstantDefinitionMap vertexConstantDefs,
const GpuConstantDefinitionMap fragmentConstantDefs,
GLUniformReference refToUpdate 
)
protected

Find where the data for a specific uniform should come from, populate.

void Ogre::GLSLESProgramManagerCommon::extractConstantDefs ( const String src,
GpuNamedConstants constantDefs,
const String filename 
)

Populate a list of uniforms based on GLSL ES source.

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.
void Ogre::GLSLESProgramManagerCommon::extractUniforms ( GLuint  programObject,
const GpuConstantDefinitionMap vertexConstantDefs,
const GpuConstantDefinitionMap fragmentConstantDefs,
GLUniformReferenceList list,
GLUniformBufferList sharedList 
)

Populate a list of uniforms based on a program object.

Parameters
programObjectHandle to the program object to query
vertexConstantDefsDefinition of the constants 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 constants 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).
void Ogre::GLSLESProgramManagerCommon::optimiseShaderSource ( GLSLESGpuProgram gpuProgram)
void Ogre::GLSLESProgramManagerCommon::parseIndividualConstant ( const String src,
GpuNamedConstants defs,
String::size_type  currPos,
const String filename,
GpuSharedParametersPtr  sharedParams 
)
protected

Member Data Documentation

GLSLESGpuProgram* Ogre::GLSLESProgramManagerCommon::mActiveFragmentGpuProgram
protected

Definition at line 59 of file OgreGLSLESProgramManagerCommon.h.

GLSLESGpuProgram* Ogre::GLSLESProgramManagerCommon::mActiveVertexGpuProgram
protected

Active objects defining the active rendering gpu state.

Definition at line 58 of file OgreGLSLESProgramManagerCommon.h.

struct glslopt_ctx* Ogre::GLSLESProgramManagerCommon::mGLSLOptimiserContext
protected

Definition at line 64 of file OgreGLSLESProgramManagerCommon.h.

StringToEnumMap Ogre::GLSLESProgramManagerCommon::mTypeEnumMap
protected

Definition at line 62 of file OgreGLSLESProgramManagerCommon.h.


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