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ANGLE_get_serialized_context_string.txt
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ANGLE_get_serialized_context_string.txt
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Name
ANGLE_get_serialized_context_string
Name Strings
GL_ANGLE_get_serialized_context_string
Contributors
Jamie Madill, Google
Contact
Jamie Madill, Google (jmadill 'at' google.com)
Status
Implemented in ANGLE.
Version
Last Modified Date: April 2, 2021
Revision: #1
Number
TBD
Dependencies
OpenGL ES 2.0 is required.
Overview
Adds a query for a serialized string representation of a context.
Useful for testing to easily compare two states.
New Tokens
Accepted by the <name> parameter of glGetString:
SERIALIZED_CONTEXT_STRING_ANGLE 0x96B0
Additions to Chapter 6 of the OpenGL ES 2.0 Specification (Querying GL State)
Update Section 6.1.5 "String Queries" to accept the new enum specified
above. The SERIALIZED_CONTEXT_STRING_ANGLE string is an implementation-
dependent representation of the current context state. Two contexts
with the same internal state are guaranteed to have the same value. Note
that the reverse is not true - two contexts with different states are
may also have the same serialized string.
New State
None.
Issues
1) Should two contexts with different states return different strings?
RESOLVED: We don't provide a guarantee that every state is serialized
into the string. This loose wording lets the extension provide
some additional extra validation without being overly strict and
making the implementation difficult. It also allow a no-op
implementation to satisfy the extension requirements.
Revision History
2021/04/02 jmadill Initial revision.