IGlsStateManagerES20 Interface Reference

#include <gls_state_manager_es20_interface.h>

Inheritance diagram for IGlsStateManagerES20:

Classes
struct	gl_LightSourceParameters

Public Member Functions
virtual void	AlphaBlendFuncSeparate (GLenum srcColor, GLenum dstColor, GLenum srcAlpha, GLenum dstAlpha)=0
virtual void	AlphaBlendFunc (GLenum src, GLenum dst)=0
virtual void	PushAlphaBlendFunc ()=0
virtual void	PopAlphaBlendFunc ()=0
virtual void	PushCustomShaderProgram (GlsEffect *effect, const GLboolean useProgramImmediately)=0
virtual void	PopCustomShaderProgram (void)=0
virtual bool	HasCustomShader (void) const =0
virtual void	UpdateShaderProgram (const GLboolean forceUpdate)=0
virtual void	UpdateShaderAttributes (void)=0
virtual void	UpdateShaderUniforms (void)=0
Public Member Functions inherited from IGlsStateManager
virtual void	SetDefaultAlphaBlendFunc ()=0

Protected Member Functions
	IGlsStateManagerES20 (void)
	~IGlsStateManagerES20 ()
Protected Member Functions inherited from IGlsStateManager
	IGlsStateManager ()
virtual	~IGlsStateManager ()

Detailed Description

The interface to a state manager that manages the GL Studio runtime library's use of the OpenGL context, minimizing unnecessary state changes, and has support for managing shaders.

Constructor & Destructor Documentation

IGlsStateManagerES20 ( void  )

inlineprotected

empty ctor

~IGlsStateManagerES20 ( )

inlineprotected

empty dtor

Member Function Documentation

virtual void AlphaBlendFunc ( GLenum  src, GLenum  dst  )

pure virtual

Wrapper for glBlendFunc. Parameters are equivalent to glBlendFunc

Implements IGlsStateManager.

virtual void AlphaBlendFuncSeparate ( GLenum  srcColor, GLenum  dstColor, GLenum  srcAlpha, GLenum  dstAlpha  )

pure virtual

Wrapper for glBlendFuncSeparate if supported, or glBlendFunc (ignoring the last two parameters) if glBlendFuncSeparate is not supported. Parameters are equivalent to glBlendFuncSeparate

Implements IGlsStateManager.

virtual bool HasCustomShader ( void  ) const

pure virtual

Returns true if there is at least one custom shader on the stack

virtual void PopAlphaBlendFunc ( )

pure virtual

pops the previously pushed alpha blend func from the stack and restores its state to the opengl context

Implements IGlsStateManager.

virtual void PopCustomShaderProgram ( void  )

pure virtual

Pop the custom shader program stack enabling the next custom shader program on the stack if there is one

Precondition

number of custom shader programs is > 0

Postcondition

the custom shader program stack is popped enabling the next custom shader program on the stack if there is one

virtual void PushAlphaBlendFunc ( )

pure virtual

pushes the current alpha blend func onto an internal stack. Can restore the pushed alpha blend func by calling PopAlphaBlendFunc

Implements IGlsStateManager.

virtual void PushCustomShaderProgram ( GlsEffect *  effect, const GLboolean  useProgramImmediately  )

pure virtual

Enable the given custom shader program and push it to the top of the custom shader program stack

Parameters

effect	custom shader program
useProgramImmediately	GL_TRUE if custom shader program should immediately be set as the active shader program else GL_FALSE to allow the state manager to set the program active when it is needed

Precondition

number of custom shader programs is < CUSTOM_SHADER_PROGRAM_STACK_DEPTH

Postcondition

the given custom shader program is at the top of the custom shader program stack and is enabled, it is set to the current active shader program if useProgramImmediately is GL_TRUE

virtual void UpdateShaderAttributes ( void  )

pure virtual

Update the attributes for the current shader as needed

Precondition

none

Postcondition

Appropriate attributes for the current shader are updated

virtual void UpdateShaderProgram ( const GLboolean  forceUpdate )

pure virtual

Select the appropriate shader program based on the current settings and update the current shader program if needed

Parameters

forceUpdate

GL_TRUE to force uniforms to be updated as if shader program changed

Precondition

none

Postcondition

appropriate shader program based on the current settings is active

virtual void UpdateShaderUniforms ( void  )

pure virtual

Update the uniforms for the current shader as needed

Precondition

none

Postcondition

Appropriate uniforms for the current shader are updated

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

• gls_state_manager_es20_interface.h