glisshader(3g) [mojave man page]
GLISSHADER(3G) OpenGL 3.3 GLISSHADER(3G) NAME
glIsShader - Determines if a name corresponds to a shader object C SPECIFICATION
GLboolean glIsShader(GLuint shader); PARAMETERS
shader Specifies a potential shader object. DESCRIPTION
glIsShader returns GL_TRUE if shader is the name of a shader object previously created with glCreateShader() and not yet deleted with glDeleteShader(). If shader is zero or a non-zero value that is not the name of a shader object, or if an error occurs, glIsShader returns GL_FALSE. NOTES
No error is generated if shader is not a valid shader object name. A shader object marked for deletion with glDeleteShader() but still attached to a program object is still considered a shader object and glIsShader will return GL_TRUE. ASSOCIATED GETS
glGetAttachedShaders() with a valid program object glGetShader() with arguments shader and a parameter to be queried glGetShaderInfoLog() with argument object glGetShaderSource() with argument object SEE ALSO
glAttachShader(), glCompileShader(), glCreateShader(), glDeleteShader(), glDetachShader(), glLinkProgram(), glShaderSource() COPYRIGHT
Copyright (C) 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/. OpenGL 3.3 03/08/2011 GLISSHADER(3G)
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GLDELETESHADER(3G) OpenGL 3.3 GLDELETESHADER(3G) NAME
glDeleteShader - Deletes a shader object C SPECIFICATION
void glDeleteShader(GLuint shader); PARAMETERS
shader Specifies the shader object to be deleted. DESCRIPTION
glDeleteShader frees the memory and invalidates the name associated with the shader object specified by shader. This command effectively undoes the effects of a call to glCreateShader(). If a shader object to be deleted is attached to a program object, it will be flagged for deletion, but it will not be deleted until it is no longer attached to any program object, for any rendering context (i.e., it must be detached from wherever it was attached before it will be deleted). A value of 0 for shader will be silently ignored. To determine whether an object has been flagged for deletion, call glGetShader() with arguments shader and GL_DELETE_STATUS. ERRORS
GL_INVALID_VALUE is generated if shader is not a value generated by OpenGL. ASSOCIATED GETS
glGetAttachedShaders() with the program object to be queried glGetShader() with arguments shader and GL_DELETE_STATUS glIsShader() SEE ALSO
glCreateProgram(), glCreateShader(), glDetachShader(), glUseProgram() COPYRIGHT
Copyright (C) 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/. OpenGL 3.3 03/08/2011 GLDELETESHADER(3G)