Cache for shaders. More...

#include <ACG/GL/ShaderCache.hh>

Classes
struct	CacheEntry

Public Member Functions
virtual	~ShaderCache ()
	Destructor.

GLSL::Program *	getProgram (const ShaderGenDesc *_desc, const std::vector< unsigned int > &_mods)
	Query a dynamically generated program from cache. More...

GLSL::Program *	getProgram (const ShaderGenDesc _desc, const std::vector< unsigned int > _mods)
	Query a dynamically generated program from cache. More...

GLSL::Program *	getProgram (const ShaderGenDesc *_desc)
	Query a dynamically generated program from cache. More...

GLSL::Program *	getProgram (const char _vertexShaderFile, const char _tessControlShaderFile, const char _tessEvalShaderFile, const char _geometryShaderFile, const char _fragmentShaderFile, QStringList _macros=0, bool _verbose=true)
	Query a static shader program from cache. More...

GLSL::Program *	getProgram (const char _vertexShaderFile, const char _fragmentShaderFile, QStringList *_macros=0, bool _verbose=true)
	Query a static shader program from cache. More...

GLSL::Program *	getComputeProgram (const char _computeShaderFile, QStringList _macros=0, bool _verbose=true)
	Query a static compute shader program from cache. More...

void	clearCache ()
	Delete all cached shaders.

void	setTimeCheck (bool _on)
	enable or disable checking of the time step of each file More...

bool	getTimeCheck ()

void	setDebugOutputDir (const char *_outputDir)
	Enable debug output of generated shaders to specified directory.

Static Public Member Functions
static ShaderCache *	getInstance ()
	Return instance of the ShaderCache singleton. More...

Protected Types
typedef std::list< std::pair< CacheEntry, GLSL::Program * > >	CacheList

Protected Member Functions
bool	compareTimeStamp (const CacheEntry _a, const CacheEntry _b)
	Returns true, if the shaders have the timestamp.

int	compareShaderGenDescs (const CacheEntry _a, const CacheEntry _b)
	Returns true, if the shaders are not equal.

Protected Attributes
CacheList	cache_
	cache containing dynamic shaders from ShaderProgGenerator

CacheList	cacheStatic_
	cache containing static shaders loaded from files (separate from dynamic cache to reduce access time)

CacheList	cacheComputeShaders_
	cache for static compute shaders

bool	timeCheck_

QString	dbgOutputDir_
	output directory for shaders in dynamic cache

Detailed Description

Cache for shaders.

This class provides a cache for shaders. You can query a GLSL::Program via getProgram by specifying a ShaderGenDesc. If the program has already been compiled, it is returned from the cache. Otherwise it will be compiled and linked, added to the cache and returned. This ensures, that the shader is not compiled and linked every time, it is used.

Note: This class is a singleton

Definition at line 79 of file ShaderCache.hh.

Member Function Documentation

GLSL::Program * ACG::ShaderCache::getComputeProgram	(	const char *	_computeShaderFile,
		QStringList *	_macros = `0`,
		bool	_verbose = `true`
	)

Query a static compute shader program from cache.

Can be used to load a shader and have external changes automatically applied by the timestamp watchdog. However, the program should be queried every time before using the program as it may have been deleted and recompiled in the meantime.

Parameters

_computeShaderFile	relative (from shader directory) or absolute filename of vertex shader
_macros	optional list of glsl preprocessor macros, which are added directly after the #version directive (example: "#define USE_METHOD 1", "#define METHOD_PARAM 0"...)
_verbose	log or suppress error output

Returns: The program (Either from cache or newly compiled and linked)

Definition at line 447 of file ShaderCache.cc.

ShaderCache * ACG::ShaderCache::getInstance ( )

static

Return instance of the ShaderCache singleton.

Returns: Instance

Definition at line 90 of file ShaderCache.cc.

GLSL::Program * ACG::ShaderCache::getProgram	(	const ShaderGenDesc *	_desc,
		const std::vector< unsigned int > &	_mods
	)

Query a dynamically generated program from cache.

Parameters

_desc	Shader description
_mods	Combination of active shader modifier ids

Returns: The program (Either from cache or newly compiled and linked)

Definition at line 108 of file ShaderCache.cc.

GLSL::Program* ACG::ShaderCache::getProgram	(	const ShaderGenDesc *	_desc,
		const std::vector< unsigned int > *	_mods
	)

inline

Query a dynamically generated program from cache.

Parameters

_desc	Shader description
_mods	Combination of active shader modifier ids

Returns: The program (Either from cache or newly compiled and linked)

Definition at line 107 of file ShaderCache.hh.

GLSL::Program * ACG::ShaderCache::getProgram ( const ShaderGenDesc * _desc )

Query a dynamically generated program from cache.

Parameters

_desc	Shader description
_mods	Combination of active shader modifier ids

Returns: The program (Either from cache or newly compiled and linked)

Definition at line 97 of file ShaderCache.cc.

GLSL::Program * ACG::ShaderCache::getProgram	(	const char *	_vertexShaderFile,
		const char *	_tessControlShaderFile,
		const char *	_tessEvalShaderFile,
		const char *	_geometryShaderFile,
		const char *	_fragmentShaderFile,
		QStringList *	_macros = `0`,
		bool	_verbose = `true`
	)

Query a static shader program from cache.

Can be used to load a shader and have external changes automatically applied by the timestamp watchdog. However, the program should be queried every time before using the program as it may have been deleted and recompiled in the meantime.

Parameters

_vertexShaderFile	relative (from shader directory) or absolute filename of vertex shader
_tessControlShaderFile	relative (from shader directory) or absolute filename of tessellation control shader, null accepted
_tessEvalShaderFile	relative (from shader directory) or absolute filename of tessellation eval shader, null accepted
_geometryShaderFile	relative (from shader directory) or absolute filename of geometry shader, null accepted
_fragmentShaderFile	relative (from shader directory) or absolute filename of fragment shader
_macros	optional list of glsl preprocessor macros, which are added directly after the #version directive (example: "#define USE_METHOD 1", "#define METHOD_PARAM 0"...)
_verbose	log or suppress error output

Returns: The program (Either from cache or newly compiled and linked)

Definition at line 288 of file ShaderCache.cc.

GLSL::Program * ACG::ShaderCache::getProgram	(	const char *	_vertexShaderFile,
		const char *	_fragmentShaderFile,
		QStringList *	_macros = `0`,
		bool	_verbose = `true`
	)

Query a static shader program from cache.

Can be used to load a shader and have external changes automatically applied by the timestamp watchdog. However, the program should be queried every time before using the program as it may have been deleted and recompiled in the meantime.

Parameters

_vertexShaderFile	relative (from shader directory) or absolute filename of vertex shader
_fragmentShaderFile	relative (from shader directory) or absolute filename of fragment shader
_macros	optional list of glsl preprocessor macros, which are added directly after the #version directive (example: "#define USE_METHOD 1", "#define METHOD_PARAM 0"...)
_verbose	log or suppress error output

Returns: The program (Either from cache or newly compiled and linked)

Definition at line 442 of file ShaderCache.cc.

void ACG::ShaderCache::setTimeCheck ( bool _on )

inline

enable or disable checking of the time step of each file

Definition at line 177 of file ShaderCache.hh.

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

ACG/GL/ShaderCache.hh
ACG/GL/ShaderCache.cc

Classes

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation