[bdw][iris][bisected][regression] crashing piglit tests
Bisected the issue to mesa=f611af35
Author: Indrajit Kumar Das <indrajit-kumar.das@amd.com>
Date: Fri Jul 10 11:45:22 2020 +0530
st/mesa: use fragment shader to copy stencil buffer
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5836>
Failing tests show identical stderr (sampled from https://mesa-ci.01.org/mesa_master/builds/21727/results/727371831 test name 'piglit.spec.!opengl 1_1.depthstencil-default_fb-copypixels samples=4':
fbo-clear-formats: ../src/intel/compiler/brw_fs.cpp:4512: void lower_fb_write_logical_send(const brw::fs_builder&, fs_inst*, const brw_wm_prog_data*, const brw_wm_prog_key*, const fs_visitor::thread_payload&): Assertion `devinfo->gen >= 9' failed.