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OpenGLHelpers Class Reference

A set of miscellaneous openGL helper functions. More...

Static Public Member Functions

static void resetErrorState ()
 Clears the GL error state.
 
static bool isContextActive ()
 Returns true if the current thread has an active OpenGL context.
 
static void clear (Colour colour)
 Clears the current context using the given colour.
 
static void enableScissorTest (const Rectangle< int > &clip)
 
static bool isExtensionSupported (const char *extensionName)
 Checks whether the current context supports the specified extension.
 
static void * getExtensionFunction (const char *functionName)
 Returns the address of a named GL extension function.
 
static String translateVertexShaderToV3 (const String &)
 Makes some simple textual changes to a shader program to try to convert old GLSL keywords to their v3 equivalents.
 
static String translateFragmentShaderToV3 (const String &)
 Makes some simple textual changes to a shader program to try to convert old GLSL keywords to their v3 equivalents.
 

Detailed Description

A set of miscellaneous openGL helper functions.

Member Function Documentation

static void OpenGLHelpers::resetErrorState ( )
static

Clears the GL error state.

static bool OpenGLHelpers::isContextActive ( )
static

Returns true if the current thread has an active OpenGL context.

static void OpenGLHelpers::clear ( Colour  colour)
static

Clears the current context using the given colour.

static void OpenGLHelpers::enableScissorTest ( const Rectangle< int > &  clip)
static
static bool OpenGLHelpers::isExtensionSupported ( const char *  extensionName)
static

Checks whether the current context supports the specified extension.

static void* OpenGLHelpers::getExtensionFunction ( const char *  functionName)
static

Returns the address of a named GL extension function.

static String OpenGLHelpers::translateVertexShaderToV3 ( const String )
static

Makes some simple textual changes to a shader program to try to convert old GLSL keywords to their v3 equivalents.

Before doing this, the function will check whether the current context is actually using a later version of the language, and if not it will not make any changes. Obviously this is not a real parser, so will only work on simple code!

static String OpenGLHelpers::translateFragmentShaderToV3 ( const String )
static

Makes some simple textual changes to a shader program to try to convert old GLSL keywords to their v3 equivalents.

Before doing this, the function will check whether the current context is actually using a later version of the language, and if not it will not make any changes. Obviously this is not a real parser, so will only work on simple code!


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