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GLGETPROGRAMRESOURCE(3G) | [FIXME: manual] | GLGETPROGRAMRESOURCE(3G) |
NAME¶
glGetProgramResourceIndex - query the index of a named resource within a programC SPECIFICATION¶
GLuint
glGetProgramResourceIndex(GLuint program,
GLenum programInterface,
const char * name);
PARAMETERS¶
programThe name of a program object whose resources to
query.
programInterface
A token identifying the interface within program
containing the resource named name.
name
The name of the resource to query the index of.
DESCRIPTION¶
glGetProgramResourceIndex returns the unsigned integer index assigned to a resource named name in the interface type programInterface of program object program. program must be the name of an existing program object. programInterface is the name of the interface within program which contains the resource named nameand must be one of the following values: GL_UNIFORMThe query is targeted at the set of active uniforms
within program.
GL_UNIFORM_BLOCK
The query is targeted at the set of active uniform blocks
within program.
GL_PROGRAM_INPUT
The query is targeted at the set of active input
variables used by the first shader stage of program. If program
contains multiple shader stages then input variables from any stage other than
the first will not be enumerated.
GL_PROGRAM_OUTPUT
The query is targeted at the set of active output
variables produced by the last shader stage of program. If
program contains multiple shader stages then output variables from any
stage other than the last will not be enumerated.
GL_VERTEX_SUBROUTINE, GL_TESS_CONTROL_SUBROUTINE,
GL_TESS_EVALUATION_SUBROUTINE, GL_GEOMETRY_SUBROUTINE,
GL_FRAGMENT_SUBROUTINE, GL_COMPUTE_SUBROUTINE
The query is targeted at the set of active subroutines
for the vertex, tessellation control, tessellation evaluation, geometry,
fragment and compute shader stages of program, respectively.
GL_VERTEX_SUBROUTINE_UNIFORM, GL_TESS_CONTROL_SUBROUTINE_UNIFORM,
GL_TESS_EVALUATION_SUBROUTINE_UNIFORM,
GL_GEOMETRY_SUBROUTINE_UNIFORM, GL_FRAGMENT_SUBROUTINE_UNIFORM,
GL_COMPUTE_SUBROUTINE_UNIFORM
The query is targeted at the set of active subroutine
uniform variables used by the vertex, tessellation control, tessellation
evaluation, geometry, fragment and compute shader stages of program,
respectively.
GL_TRANSFORM_FEEDBACK_VARYING
The query is targeted at the set of output variables from
the last non-fragment stage of program that would be captured if
transform feedback were active.
GL_TRANSFORM_FEEDBACK_BUFFER
The query is targeted at the set of active buffer binding
points to which output variables in the GL_TRANSFORM_FEEDBACK_VARYING
interface are written.
GL_BUFFER_VARIABLE
The query is targeted at the set of active buffer
variables used by program.
GL_SHADER_STORAGE_BLOCK
The query is targeted at the set of active shader storage
blocks used by program.
If name exactly matches the name string of one of the active resources
for programInterface, the index of the matched resource is returned.
Additionally, if name would exactly match the name string of an active
resource if "[0]" were appended to name, the index of the
matched resource is returned. Otherwise, name is considered not to be
the name of an active resource, and GL_INVALID_INDEX is returned.
For the interface GL_TRANSFORM_FEEDBACK_VARYING, the value
GL_INVALID_INDEX should be returned when querying the index assigned to
the special names gl_NextBuffer, gl_SkipComponents1, gl_SkipComponents2,
gl_SkipComponents3, or gl_SkipComponents4.
ERRORS¶
GL_INVALID_ENUM is generated if programInterface is not one of the accepted interface types. GL_INVALID_ENUM is generated if programInterface is GL_ATOMIC_COUNTER_BUFFER or GL_TRANSFORM_FEEDBACK_BUFFER, since active atomic counter and transform feedback buffer resources are not assigned name strings. Although not an error, GL_INVALID_INDEX is returned if name is not the name of a resource within the interface identified by programInterface.VERSION SUPPORT¶
OpenGL Version | ||||||||||||
Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
glGetProgramResourceIndex | - | - | - | - | - | - | - | - | - | ✔ | ✔ | ✔ |
SEE ALSO¶
glGetProgramResourceName(), glGetGetProgramResource(), glGetProgramResourceLocation(), glGetProgramResourceLocationIndex().COPYRIGHT¶
Copyright © 2013-2014 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/.COPYRIGHT¶
Copyright © 2013-2014 Khronos Group08/26/2014 | [FIXME: source] |