glReleaseShaderCompiler — release resources allocated by the shader compiler
For implementations that support a shader compiler,
glReleaseShaderCompiler frees resources allocated by the shader compiler. This is a hint from the application that additional shader compilations are unlikely to occur, at least for some period of time, and that the resources consumed by the shader compiler may be released and put to better use elsewhere.
However, if a call to glCompileShader is made after a call to
glReleaseShaderCompiler, the shader compiler must be restored to service the compilation request as if
glReleaseShaderCompiler had never been called.
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.
glGet with argument
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