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// [config]
// expect_result: fail
// glsl_version: 4.20
// require_extensions: GL_ARB_fragment_shader_interlock
// check_link: true
// [end config]
/* The GL_ARB_fragment_shader_interlock spec says:
*
* A compile- or link-time error will be generated if main() calls either
* function more than once, contains a call to one function without a
* matching call to the other, or calls endInvocationInterlockARB() before
* calling beginInvocationInterlockARB().
*/
#version 420
#extension GL_ARB_fragment_shader_interlock: require
void main()
{
beginInvocationInterlockARB();
beginInvocationInterlockARB();
endInvocationInterlockARB();
}
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