glCreateProgram man page on RedHat
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GLCREATEPROGRAM(3G) OpenGL Manual GLCREATEPROGRAM(3G)
NAME
glCreateProgram - Creates a program object
C SPECIFICATION
GLuint glCreateProgram(void);
DESCRIPTION
glCreateProgram creates an empty program object and returns a non-zero
value by which it can be referenced. A program object is an object to
which shader objects can be attached. This provides a mechanism to
specify the shader objects that will be linked to create a program. It
also provides a means for checking the compatibility of the shaders
that will be used to create a program (for instance, checking the
compatibility between a vertex shader and a fragment shader). When no
longer needed as part of a program object, shader objects can be
detached.
One or more executables are created in a program object by successfully
attaching shader objects to it with glAttachShader(), successfully
compiling the shader objects with glCompileShader(), and successfully
linking the program object with glLinkProgram(). These executables are
made part of current state when glUseProgram() is called. Program
objects can be deleted by calling glDeleteProgram(). The memory
associated with the program object will be deleted when it is no longer
part of current rendering state for any context.
NOTES
Like buffer and texture objects, the name space for program objects may
be shared across a set of contexts, as long as the server sides of the
contexts share the same address space. If the name space is shared
across contexts, any attached objects and the data associated with
those attached objects are shared as well.
Applications are responsible for providing the synchronization across
API calls when objects are accessed from different execution threads.
ERRORS
This function returns 0 if an error occurs creating the program object.
ASSOCIATED GETS
glGet() with the argument GL_CURRENT_PROGRAM
glGetActiveAttrib() with a valid program object and the index of an
active attribute variable
glGetActiveUniform() with a valid program object and the index of an
active uniform variable
glGetAttachedShaders() with a valid program object
glGetAttribLocation() with a valid program object and the name of an
attribute variable
glGetProgram() with a valid program object and the parameter to be
queried
glGetProgramInfoLog() with a valid program object
glGetUniform() with a valid program object and the location of a
uniform variable
glGetUniformLocation() with a valid program object and the name of a
uniform variable
glIsProgram()
SEE ALSO
glAttachShader(), glBindAttribLocation(), glCreateShader(),
glDeleteProgram(), glDetachShader(), glLinkProgram(), glUniform(),
glUseProgram(), glValidateProgram()
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/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLCREATEPROGRAM(3G)
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