Difference between revisions of "GLAPI/glGetFragDataLocation"

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m (Renaming category: 'GL 4 API Shader Program Creation' to 'Core API Ref Shader Program Creation'.)
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== Function Definition ==
 
== Function Definition ==
  
   GLint '''glGetFragDataLocation'''(GLuint ''program'', const char * ''name'');
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   GLint '''glGetFragDataLocation'''(GLuint {{param|program}}, const char * {{param|name}});
  
 
; program
 
; program
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== Description ==
 
== Description ==
  
'''glGetFragDataLocation''' retrieves the assigned color number binding for the user-defined varying out variable ''name'' for program ''program''. ''program'' must have previously been linked. ''name'' must be a null-terminated string. If ''name'' is not the name of an active user-defined varying out fragment shader variable within ''program'', -1 will be returned.
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'''glGetFragDataLocation''' retrieves the assigned color number binding for the user-defined varying out variable {{param|name}} for program {{param|program}}. {{param|program}} must have previously been linked. {{param|name}} must be a null-terminated string. If {{param|name}} is not the name of an active user-defined varying out fragment shader variable within {{param|program}}, -1 will be returned.
  
 
== Errors ==
 
== Errors ==
  
{{code|GL_INVALID_OPERATION}} is generated if ''program'' is not the name of a program object.
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{{enum|GL_INVALID_OPERATION}} is generated if {{param|program}} is not the name of a program object.
  
 
== See Also ==
 
== See Also ==
  
[[GLAPI/glCreateProgram|glCreateProgram]], [[GLAPI/glBindFragDataLocation|glBindFragDataLocation]]
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{{apifunc|glLinkProgram}}, {{apifunc|glBindFragDataLocation}}, {{apifunc|glBindFragDataLocationIndexed}}, {{apifunc|glGetFragDataIndex}}, {{apifunc|glGetProgramResource}}, {{apifunc|glGetProgramResourceLocation}}
  
 
== Copyright ==
 
== Copyright ==
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[[Category:Core API Reference|GetFragDataLocation]]
 
[[Category:Core API Reference|GetFragDataLocation]]
[[Category:Core API Ref Shader Program Creation|GetFragDataLocation]]
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[[Category:Core API Ref Shader Program Query|GetFragDataLocation]]
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[[Category:Program Object API State Functions|GetFragDataLocation]]

Latest revision as of 09:59, 15 August 2013

glGetFragDataLocation
Core in version 4.6
Core since version 3.0

glGetFragDataLocation: query the bindings of color numbers to user-defined varying out variables

Function Definition

 GLint glGetFragDataLocation(GLuint program​, const char * name​);
program
The name of the program containing varying out variable whose binding to query
name
The name of the user-defined varying out variable whose binding to query

Description

glGetFragDataLocation retrieves the assigned color number binding for the user-defined varying out variable name​ for program program​. program​ must have previously been linked. name​ must be a null-terminated string. If name​ is not the name of an active user-defined varying out fragment shader variable within program​, -1 will be returned.

Errors

GL_INVALID_OPERATION is generated if program​ is not the name of a program object.

See Also

glLinkProgram, glBindFragDataLocation, glBindFragDataLocationIndexed, glGetFragDataIndex, glGetProgramResource, glGetProgramResourceLocation

Copyright

Copyright © 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.