Khronos Public Bugzilla
Bug 731 - Cannot query the shader stage that provides transform feedback variables.
Cannot query the shader stage that provides transform feedback variables.
Status: RESOLVED LATER
Product: OpenGL
Classification: Unclassified
Component: API Specification
4.3
All All
: P3 normal
: ---
Assigned To: Jon Leech
ARB Next Generation API TSG email alias
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2012-10-10 14:19 PDT by Alfonse
Modified: 2013-10-28 16:37 PDT (History)
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Description Alfonse 2012-10-10 14:19:24 PDT
OpenGL 4.3 and program_query_interface allows you to query which shader stage references variables, even PROGRAM_INPUT/OUTPUT variables. All except for transform feedback variables.

This seems to be missing functionality.
Comment 1 Jon Leech 2013-08-15 19:31:10 PDT
We discussed this and someone commented that the referenced-by query
can be done for all the things that can be referenced by multiple program
stages, while transform feedback variables can only be referenced by one
stage.

We'll consider this as a feature request going forward, but people asked
what your use case is.
Comment 2 Jon Leech 2013-10-28 16:37:43 PDT
Closing for lack of use cases that might motivate support for
this RFE.