Module: Mesa Branch: master Commit: ebb5b88a02637908b9f4bfd0644964d6347b23af URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ebb5b88a02637908b9f4bfd0644964d6347b23af
Author: Roland Scheidegger <[email protected]> Date: Thu Apr 2 02:51:03 2020 +0200 gallivm: fix rgtc2 format In some cases, there can be garbage in the upper bits after the channel decode - for dxt5 this didn't matter (as the upper bits are shifted out anyway) but for rgtc2 formats it does. Reviewed-by: Dave Airlie <[email protected]> Reviewed-by: Brian Paul <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4416> --- src/gallium/auxiliary/gallivm/lp_bld_format_s3tc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_s3tc.c b/src/gallium/auxiliary/gallivm/lp_bld_format_s3tc.c index c5ecaf6ff9a..50addad486a 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_format_s3tc.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_format_s3tc.c @@ -1023,6 +1023,8 @@ s3tc_dxt5_alpha_channel(struct gallivm_state *gallivm, alpha = LLVMBuildAnd(builder, alpha, LLVMBuildNot(builder, mask6, ""), ""); alpha = LLVMBuildOr(builder, alpha, mask7, ""); } + /* There can be garbage in upper bits, mask them off for rgtc formats */ + alpha = LLVMBuildAnd(builder, alpha, lp_build_const_int_vec(gallivm, type, 0xff), ""); return alpha; } _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
