Module: Mesa Branch: master Commit: 97747ac88fe9207dde83b275a93ebcee3a84dc01 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=97747ac88fe9207dde83b275a93ebcee3a84dc01
Author: Eric Anholt <[email protected]> Date: Wed Nov 14 11:44:57 2012 -0800 i965: Fix hangs with FP KIL instructions pre-gen6. We can't support IF statements in 16-wide on these. To get back to 16-wide for these shaders, we need to support predicate on discard instructions in the backend IR, which is something we've sort of got on the list to do anyway. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=55828 Reviewed-by: Kenneth Graunke <[email protected]> --- src/mesa/drivers/dri/i965/brw_fs_fp.cpp | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs_fp.cpp b/src/mesa/drivers/dri/i965/brw_fs_fp.cpp index 88b0976..834f290 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_fp.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_fp.cpp @@ -255,6 +255,8 @@ fs_visitor::emit_fragment_program_code() emit(CMP(null, regoffset(src[0], i), fs_reg(0.0f), BRW_CONDITIONAL_L)); + if (intel->gen < 6 && c->dispatch_width == 16) + fail("Can't support (non-uniform) control flow on 16-wide"); emit(IF(BRW_PREDICATE_NORMAL)); emit(FS_OPCODE_DISCARD); emit(BRW_OPCODE_ENDIF); _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
