Module: Mesa Branch: master Commit: 296c04d78c9840f83e7fcaf9b45a4cee96752348 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=296c04d78c9840f83e7fcaf9b45a4cee96752348
Author: Danylo Piliaiev <danylo.pilia...@globallogic.com> Date: Thu May 14 15:29:36 2020 +0300 intel/fs: Work around dual-source blending hangs in combination with SIMD16 It was found that dual-source blending hangs with SIMD16 dispatch in some specific but unknown situation. Which in the wild happen when rgba anti-aliasing is enabled for fonts. Cc: <mesa-sta...@lists.freedesktop.org> Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2183 Signed-off-by: Danylo Piliaiev <danylo.pilia...@globallogic.com> Reviewed-by: Lionel Landwerlin <lionel.g.landwer...@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5037> --- src/intel/compiler/brw_fs_visitor.cpp | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp index 7b315693e4a..22e83f1adb9 100644 --- a/src/intel/compiler/brw_fs_visitor.cpp +++ b/src/intel/compiler/brw_fs_visitor.cpp @@ -548,9 +548,13 @@ fs_visitor::emit_fb_writes() * XXX - Emit an extra single-source NULL RT-write marked LastRT in * order to release the thread dependency without disabling * SIMD32. + * + * The dual-source RT write messages may lead to hangs with SIMD16 + * dispatch on ICL due some unknown reasons, see + * https://gitlab.freedesktop.org/mesa/mesa/-/issues/2183 */ - limit_dispatch_width(16, "Dual source blending unsupported " - "in SIMD32 mode.\n"); + limit_dispatch_width(8, "Dual source blending unsupported " + "in SIMD16 and SIMD32 modes.\n"); } } _______________________________________________ mesa-commit mailing list mesa-commit@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-commit