glgetshaderiv(3g) [centos man page]
GLGETSHADER(3G) OpenGL Manual GLGETSHADER(3G) NAME
glGetShaderiv - Returns a parameter from a shader object C SPECIFICATION
void glGetShaderiv(GLuint shader, GLenum pname, GLint *params); PARAMETERS
shader Specifies the shader object to be queried. pname Specifies the object parameter. Accepted symbolic names are GL_SHADER_TYPE, GL_DELETE_STATUS, GL_COMPILE_STATUS, GL_INFO_LOG_LENGTH, GL_SHADER_SOURCE_LENGTH. params Returns the requested object parameter. DESCRIPTION
glGetShader returns in params the value of a parameter for a specific shader object. The following parameters are defined: GL_SHADER_TYPE params returns GL_VERTEX_SHADER if shader is a vertex shader object, GL_GEOMETRY_SHADER if shader is a geometry shader object, and GL_FRAGMENT_SHADER if shader is a fragment shader object. GL_DELETE_STATUS params returns GL_TRUE if shader is currently flagged for deletion, and GL_FALSE otherwise. GL_COMPILE_STATUS params returns GL_TRUE if the last compile operation on shader was successful, and GL_FALSE otherwise. GL_INFO_LOG_LENGTH params returns the number of characters in the information log for shader including the null termination character (i.e., the size of the character buffer required to store the information log). If shader has no information log, a value of 0 is returned. GL_SHADER_SOURCE_LENGTH params returns the length of the concatenation of the source strings that make up the shader source for the shader, including the null termination character. (i.e., the size of the character buffer required to store the shader source). If no source code exists, 0 is returned. NOTES
If an error is generated, no change is made to the contents of params. ERRORS
GL_INVALID_VALUE is generated if shader is not a value generated by OpenGL. GL_INVALID_OPERATION is generated if shader does not refer to a shader object. GL_INVALID_ENUM is generated if pname is not an accepted value. ASSOCIATED GETS
glGetShaderInfoLog() with argument shader glGetShaderSource() with argument shader glIsShader() SEE ALSO
glCompileShader(), glCreateShader(), glDeleteShader(), glGetProgram(), 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/. AUTHORS
opengl.org opengl.org 06/10/2014 GLGETSHADER(3G)
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GLATTACHSHADER(3G) OpenGL 3.3 GLATTACHSHADER(3G) NAME
glAttachShader - Attaches a shader object to a program object C SPECIFICATION
void glAttachShader(GLuint program, GLuint shader); PARAMETERS
program Specifies the program object to which a shader object will be attached. shader Specifies the shader object that is to be attached. DESCRIPTION
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. ERRORS
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. ASSOCIATED GETS
glGetAttachedShaders() with the handle of a valid program object glGetShaderInfoLog() glGetShaderSource() glIsProgram() glIsShader() SEE ALSO
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 GLATTACHSHADER(3G)