juce::OpenGLHelpers Class Reference

Detailed Description

A set of miscellaneous openGL helper functions.

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 (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	getGLSLVersionString ()
	Returns a version string such as "#version 150" suitable for prefixing a GLSL shader on this platform.
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.

Member Functions

resetErrorState()

void juce::OpenGLHelpers::resetErrorState ( )

static

Clears the GL error state.

isContextActive()

bool juce::OpenGLHelpers::isContextActive ( )

static

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

clear()

void juce::OpenGLHelpers::clear ( Colour colour )

static

Clears the current context using the given colour.

enableScissorTest()

void juce::OpenGLHelpers::enableScissorTest ( Rectangle< int > clip )

static

isExtensionSupported()

bool juce::OpenGLHelpers::isExtensionSupported ( const char * extensionName )

static

Checks whether the current context supports the specified extension.

getExtensionFunction()

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

static

Returns the address of a named GL extension function.

getGLSLVersionString()

String juce::OpenGLHelpers::getGLSLVersionString ( )

static

Returns a version string such as "#version 150" suitable for prefixing a GLSL shader on this platform.

translateVertexShaderToV3()

String juce::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!

translateFragmentShaderToV3()

String juce::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!