glShaderSource

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Replaces the source code in a shader object.

C Specification[edit]

void glShaderSource( GLuint shader, GLsizei count, const GLchar ** string, const GLint * length );


Parameters[edit]

shader - Specifies the handle of the shader object whose source code is to be replaced.
count - Specifies the number of elements in the string and length arrays.
string - Specifies an array of pointers to strings containing the source code to be loaded into the shader.
length - Specifies an array of string lengths.


Description[edit]

 glShaderSource sets the source code in shader to the source code in the array of strings specified by string . Any source code previously stored in the shader object is completely replaced. The number of strings in the array is specified by count . If length is NULL , each string is assumed to be null terminated. If length is a value other than NULL , it points to an array containing a string length for each of the corresponding elements of string . Each element in the length array may contain the length of the corresponding string (the null character is not counted as part of the string length) or a value less than 0 to indicate that the string is null terminated. The source code strings are not scanned or parsed at this time; they are simply copied into the specified shader object.


Notes[edit]

OpenGL copies the shader source code strings when glShaderSource is called, so an application may free its copy of the source code strings immediately after the function returns.


Errors[edit]

 GL_INVALID_VALUE is generated if shader is not a value generated by OpenGL.

 GL_INVALID_OPERATION is generated if shader is not a shader object.

 GL_INVALID_VALUE is generated if count is less than 0.


Associated Gets[edit]

 glGetShader with arguments shader and GL_SHADER_SOURCE_LENGTH 

 glGetShaderSource with argument shader 

 glIsShader 


Version Support[edit]

 glShaderSource  2.0+

See Also[edit]

 glCompileShader , glCreateShader , glDeleteShader 


Copyright[edit]

Copyright© 2003-2005 3Dlabs Inc. Ltd. Copyright© 2010-2014 Khronos Group. 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/.