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Core in version 4.5
Core since version 2.0

glGetShaderiv: Returns a parameter from a shader object

Function Definition

 void glGetShaderiv(GLuint shader, GLenum pname, GLint *params);
Specifies the shader object to be queried.
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​.
Returns the requested object parameter.


glGetShader returns in params the value of a parameter for a specific shader object. The following parameters are defined:

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.
params returns GL_TRUE​ if shader is currently flagged for deletion, and GL_FALSE​ otherwise.
params returns GL_TRUE​ if the last compile operation on shader was successful, and GL_FALSE​ otherwise.
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.
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.


If an error is generated, no change is made to the contents of params.


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


See Also

glCompileShader, glCreateShader, glDeleteShader, glGetProgram, 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.