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glIsProgram — determine if a name corresponds to a program object

C Specification

GLboolean glIsProgram(GLuint program);



Specifies a potential program object.


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.


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.

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