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
GLSLESGpuProgram *	mActiveFragmentGpuProgram

GLSLESGpuProgram *	mActiveVertexGpuProgram
	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

typedef map<String, GLenum>::type Ogre::GLSLESProgramManagerCommon::StringToEnumMap

protected

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

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.

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

programObject	Handle to the program object to query
vertexConstantDefs	Definition 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.
fragmentConstantDefs	Definition 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.
list	The 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
	)