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Init (const Aspect_Drawable theSurface, const Aspect_Display theDisplay, const Aspect_RenderingContext theContext, const Standard_Boolean theIsCoreProfile= Standard_False) Initialize class from currently bound OpenGL context. Init (const Standard_Boolean theIsCoreProfile= Standard_False) theShareCtx - handle to context to retrieve handles to shared resources. Release all resources, including shared ones.

You should call Init() to perform initialization with bound GL context. OpenGl_Context (const Handle &theCaps=NULL)Įmpty constructor. Returns a type descriptor about this object. void glGetInteger64v( GLenum pname, - GLint64 * data) -void glGetBooleani_v( GLenum target, - GLuint index, - GLboolean * data) - GL_INVALID_ENUM is generated if pname is not an accepted value.Public Types inherited from Standard_Transient Unsafe ( unsafePerformIO ) - * Extension detection hasExt :: String -> Bool hasExt ext = ext `elem` glExtensions -hasExt :: CString -> Bool -glGetString 0x1F03 >= indexOf ext /= -1 hasES3 :: Bool hasES3 = glEnv majorVersion > 2 extVAO :: Maybe ( GLsizei -> Ptr GLuint -> GL (), GLuint -> GL (), GLsizei -> Ptr GLuint -> GL () ) extVAO | hasES3 = Just ( glGenVertexArrays, glBindVertexArray, glDeleteVertexArrays ) | hasExt "GL_OES_vertex_array_object" = Just ( glGenVertexArraysOES, glBindVertexArrayOES, glDeleteVertexArraysOES ) | otherwise = Nothing - * String Parameters glVendor, glRenderer, glVersion, glShadingLanguageVersion :: String glVendor = unsafePerformIO $ glGetString 0x1F00 >= peekCString glRenderer = unsafePerformIO $ glGetString 0x1F01 >= peekCString glVersion = unsafePerformIO $ glGetString 0x1F02 >= peekCString glShadingLanguageVersion = unsafePerformIO $ glGetString 0x8B8C >= peekCString - * Integer Parameters newtype GLParam = GLParam GLenum - glGetBooleanv glGetFloatv glGetIntegerv glGetInteger64v - glGetBooleani_v glGetIntegeri_v glGetInteger64i_v - As of 3.1, 188 + ext parameters are queriable. (glGetString could return null pointer!) module Graphics.

Do NOT call below APIs out of OpenGL threads. Graphics/OpenGLES/Env.hs - | Retriving implementation depend constant values.