glGetActiveSubroutineUniform man page on RedHat
[printable version]
GLGETACTIVESUBROUTIN(3G) OpenGL Manual GLGETACTIVESUBROUTIN(3G)
NAME
glGetActiveSubroutineUniform - query a property of an active shader
subroutine uniform
C SPECIFICATION
void glGetActiveSubroutineUniformiv(GLuint program, GLenum shadertype,
GLuint index, GLenum pname,
GLint *values);
PARAMETERS
program
Specifies the name of the program containing the subroutine.
shadertype
Specifies the shader stage from which to query for the subroutine
parameter. shadertype must be one of GL_VERTEX_SHADER,
GL_TESS_CONTROL_SHADER, GL_TESS_EVALUATION_SHADER,
GL_GEOMETRY_SHADER or GL_FRAGMENT_SHADER.
index
Specifies the index of the shader subroutine uniform.
pname
Specifies the parameter of the shader subroutine uniform to query.
pname must be GL_NUM_COMPATIBLE_SUBROUTINES,
GL_COMPATIBLE_SUBROUTINES, GL_UNIFORM_SIZE or
GL_UNIFORM_NAME_LENGTH.
values
Specifies the address of a into which the queried value or values
will be placed.
DESCRIPTION
glGetActiveSubroutineUniform queries a parameter of an active shader
subroutine uniform. program contains the name of the program
containing the uniform. shadertype specifies the stage which which the
uniform location, given by index, is valid. index must be between zero
and the value of GL_ACTIVE_SUBROUTINE_UNIFORMS minus one for the shader
stage.
If pname is GL_NUM_COMPATIBLE_SUBROUTINES, a single integer indicating
the number of subroutines that can be assigned to the uniform is
returned in values.
If pname is GL_COMPATIBLE_SUBROUTINES, an array of integers is returned
in values, with each integer specifying the index of an active
subroutine that can be assigned to the selected subroutine uniform. The
number of integers returned is the same as the value returned for
GL_NUM_COMPATIBLE_SUBROUTINES.
If pname is GL_UNIFORM_SIZE, a single integer is returned in values. If
the selected subroutine uniform is an array, the declared size of the
array is returned; otherwise, one is returned.
If pname is GL_UNIFORM_NAME_LENGTH, a single integer specifying the
length of the subroutine uniform name (including the terminating null
character) is returned in values.
ERRORS
GL_INVALID_ENUM is generated if shadertype or pname is not one of the
accepted values.
GL_INVALID_VALUE is generated if index is greater than or equal to the
value of GL_ACTIVE_SUBROUTINES.
GL_INVALID_VALUE is generated if program is not the name of an existing
program object.
ASSOCIATED GETS
glGetProgramStage() with argument GL_ACTIVE_SUBROUTINE_UNIFORMS
SEE ALSO
glGetSubroutineIndex(), glGetActiveSubroutineUniformName(),
glGetProgramStage()
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/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLGETACTIVESUBROUTIN(3G)
[top]
List of man pages available for RedHat
Copyright (c) for man pages and the logo by the respective OS vendor.
For those who want to learn more, the polarhome community provides shell access and support.
[legal]
[privacy]
[GNU]
[policy]
[cookies]
[netiquette]
[sponsors]
[FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
|
|
Vote for polarhome
|
