_glapi_function Struct Reference

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Detailed Description

Track information about a function added to the GL API.

Data Fields
const char *	name
	Name of the function.
const char *	parameter_signature
	Text string that describes the types of the parameters passed to the named function.
unsigned	dispatch_offset
	Offset in the dispatch table where the pointer to the real function is located.
_glapi_proc	dispatch_stub
	Pointer to the dispatch stub for the named function.

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Field Documentation

const char* _glapi_function::name

Name of the function.

const char* _glapi_function::parameter_signature

Text string that describes the types of the parameters passed to the named function.

Parameter types are converted to characters using the following rules:

• 'i' for GLint, GLuint, and GLenum
• 'p' for any pointer type
• 'f' for GLfloat and GLclampf
• 'd' for GLdouble and GLclampd

unsigned _glapi_function::dispatch_offset

Offset in the dispatch table where the pointer to the real function is located.

If the driver has not requested that the named function be added to the dispatch table, this will have the value ~0.

_glapi_proc _glapi_function::dispatch_stub

Pointer to the dispatch stub for the named function.

Todo:

The semantic of this field should be changed slightly. Currently, it is always expected to be non-NULL. However, it would be better to only allocate the entry-point stub when the application requests the function via glXGetProcAddress. This would save memory for all the functions that the driver exports but that the application never wants to call.

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

• glapi_getproc.c

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