1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
Name
ANGLE_explicit_context
Name Strings
EGL_ANGLE_explicit_context
Contributors
Brandon Jones, Intel
Contacts
Brandon Jones, Intel (brandon1.jones 'at' intel 'dot' com)
Status
Complete.
Version
Version 1, 2018-5-22
Number
EGL Extension XXX
Extension Type
EGL Client Extension
Dependencies
OpenGL ES 3.1 is required.
EGL_KHR_get_all_proc_addresses is required.
EGL_EXT_client_extensions is required.
Overview
This extension adds new OpenGL ES entry points that allow the user to pass the current EGL
context as a function parameter. This allows users to skip lookup of the thread's current
context upon entry.
New Types
None.
New Procedures and Functions
For every OpenGL ES entry point available through eglGetProcAddress, an additional entry point
is made available. The entry points have the form of:
<return value> gl<entry point name>ContextANGLE(GLeglContextANGLE context, <entry point parameters>)
If a function already has an extension suffix, this form still applies.
New Tokens
None.
Additions to the EGL Specification
When using OpenGL ES as a client library, the ContextANGLE entry points allow the user to
pass the current EGL context as a function parameter to provide better performance than
looking up the current EGL context at every GL entry point.
Calls made with an explicit context provide no additional validation for the passed context
parameter.
Calls made with an explicit context will generate errors under the same conditions as they
would without an explicit context. Any instances of undefined behaviour without specifying
an explicit context are still undefined when specifying an explicit context.
When an EGL context that is not current is explicitly passed, the resulting behavior is
undefined.
Issues
None.
Revision History
Version 1, 2018-5-22 (Brandon Jones)
- Initial draft
|
