On 23 January 2015 at 19:03, Laura Ekstrand <laura at jlekstrand.net> wrote: ... > + if ((err = glGetError()) != 0) { > + printf("gl error: 0x%08x\n", err); > + pass = GL_FALSE; > + } Fwiw you can use piglit_check_gl_error() it quite some fancy reporting :-) -Emil