https://bugs.freedesktop.org/show_bug.cgi?id=86356 --- Comment #3 from Emil Velikov --- The following messages while replaying the trace are due to the trimming: Mesa: User error: GL_INVALID_OPERATION in glDeleteShader XX: glDebugOutputCallback: High severity API error 2, GL_INVALID_OPERATION in glDeleteShader 0 XX glDeleteShader(shader = YY) Running against debug mesa (./configure --enable-debug ...) does not trigger any asserts or produce extra output to stderr/stdout. -- You are receiving this mail because: You are the assignee for the bug.