glAttachShader — Attaches a shader object to a program object
void glAttachShader( | GLuint program, |
GLuint shader) ; |
program
Specifies the program object to which a shader object will be attached.
shader
Specifies the shader object that is to be attached.
In order to create a complete shader program, there must be a way to
specify the list of things that will be linked together. Program
objects provide this mechanism. Shaders that are to be linked
together in a program object must first be attached to that
program object. glAttachShader
attaches the
shader object specified by shader
to the
program object specified by program
. This
indicates that shader
will be included in
link operations that will be performed on
program
.
All operations that can be performed on a shader object are valid whether or not the shader object is attached to a program object. It is permissible to attach a shader object to a program object before source code has been loaded into the shader object or before the shader object has been compiled. It is permissible to attach multiple shader objects of the same type because each may contain a portion of the complete shader. It is also permissible to attach a shader object to more than one program object. If a shader object is deleted while it is attached to a program object, it will be flagged for deletion, and deletion will not occur until glDetachShader is called to detach it from all program objects to which it is attached.
GL_INVALID_VALUE
is generated if either
program
or shader
is not a value generated by OpenGL.
GL_INVALID_OPERATION
is generated if
program
is not a program object.
GL_INVALID_OPERATION
is generated if
shader
is not a shader object.
GL_INVALID_OPERATION
is generated if
shader
is already attached to
program
.
glCompileShader, glCreateShader, glDeleteShader, glDetachShader, glLinkProgram, glShaderSource
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/.