GLAPI/glIsProgram: Difference between revisions
m Bot: Adding better formatting. |
m Bot: Adding better formatting. |
||
| (One intermediate revision by the same user not shown) | |||
| Line 15: | Line 15: | ||
== Description == | == Description == | ||
'''glIsProgram''' returns {{ | '''glIsProgram''' returns {{enum|GL_TRUE}} if {{param|program}} is the name of a program object previously created with {{apifunc|glCreateProgram}} and not yet deleted with {{apifunc|glDeleteProgram}}. If {{param|program}} is zero or a non-zero value that is not the name of a program object, or if an error occurs, '''glIsProgram''' returns {{enum|GL_FALSE}}. | ||
== Notes == | == Notes == | ||
| Line 21: | Line 21: | ||
No error is generated if {{param|program}} is not a valid program object name. | No error is generated if {{param|program}} is not a valid program object name. | ||
A program object marked for deletion with {{apifunc|glDeleteProgram}} but still in use as part of current rendering state is still considered a program object and '''glIsProgram''' will return {{ | A program object marked for deletion with {{apifunc|glDeleteProgram}} but still in use as part of current rendering state is still considered a program object and '''glIsProgram''' will return {{enum|GL_TRUE}}. | ||
== Associated Gets == | == Associated Gets == | ||
{{apifunc|glGet}} with the argument {{ | {{apifunc|glGet}} with the argument {{enum|GL_CURRENT_PROGRAM}} | ||
{{apifunc|glGetActiveAttrib}} with arguments {{param|program}} and the index of an active attribute variable | {{apifunc|glGetActiveAttrib}} with arguments {{param|program}} and the index of an active attribute variable | ||
| Line 45: | Line 45: | ||
== See Also == | == See Also == | ||
{{apifunc| | {{apifunc|glCreateProgram}}, {{apifunc|glCreateShaderProgram}}, {{apifunc|glDeleteProgram}} | ||
== Copyright == | == Copyright == | ||
Latest revision as of 19:41, 27 September 2012
| Core in version | 4.6 | |
|---|---|---|
| Core since version | 2.0 | |
glIsProgram: Determines if a name corresponds to a program object
Function Definition
GLboolean glIsProgram(GLuint program);
- program
- Specifies a potential program object.
Description
glIsProgram returns GL_TRUE if program is the name of a program object previously created with glCreateProgram and not yet deleted with glDeleteProgram. If program is zero or a non-zero value that is not the name of a program object, or if an error occurs, glIsProgram returns GL_FALSE.
Notes
No error is generated if program is not a valid program object name.
A program object marked for deletion with glDeleteProgram but still in use as part of current rendering state is still considered a program object and glIsProgram will return GL_TRUE.
Associated Gets
glGet with the argument GL_CURRENT_PROGRAM
glGetActiveAttrib with arguments program and the index of an active attribute variable
glGetActiveUniform with arguments program and the index of an active uniform variable
glGetAttachedShaders with argument program
glGetAttribLocation with arguments program and the name of an attribute variable
glGetProgram with arguments program and the parameter to be queried
glGetProgramInfoLog with argument program
glGetUniform with arguments program and the location of a uniform variable
glGetUniformLocation with arguments program and the name of a uniform variable
See Also
glCreateProgram, glCreateShaderProgram, glDeleteProgram
Copyright
Copyright © 2003-2005 3Dlabs Inc. Ltd. 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/.