glCompileShader
3G

# glCompileShader

compile a shader object

## C Specification

    		void glCompileShader
    		GLuint shader

## Parameters

`shader`

  Specifies the shader object to be compiled.

## Description

For implementations that support a shader compiler, `glCompileShader` compiles the source code strings that have been stored in the shader object specified by `shader`.

The compilation status will be stored as part of the shader object's state. This value will be set to `GL_TRUE` if the shader was compiled without errors and is ready for use, and `GL_FALSE` otherwise. It can be queried by calling glGetShaderiv with arguments `shader` and `GL_COMPILE_STATUS`.

Compilation of a shader can fail for a number of reasons as specified by the OpenGL ES Shading Language Specification. Whether or not the compilation was successful, information about the compilation can be obtained from the shader object's information log by calling glGetShaderInfoLog.

## Notes

Shader compiler support is optional, and thus must be queried before use by calling glGet with argument `GL_SHADER_COMPILER`. glShaderSource, `glCompileShader`, glGetShaderPrecisionFormat, and glReleaseShaderCompiler will each generate `GL_INVALID_OPERATION` on implementations that do not support a shader compiler. Such implementations instead offer the glShaderBinary alternative for supplying a pre-compiled shader binary.

## Errors

`GL_INVALID_OPERATION` is generated if a shader compiler is not supported.

`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.

## Associated Gets

glGet with argument `GL_SHADER_COMPILER`

glGetShaderInfoLog with argument `shader`

glGetShaderiv with arguments `shader` and `GL_COMPILE_STATUS`

glIsShader

## See Also

glCreateShader, glLinkProgram, glReleaseShaderCompiler, glShaderSource, glGetShaderPrecisionFormat

## 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/.