Module: Mesa Branch: master Commit: c511e0b8442f0ddd4265137446180d5ced3f1671 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=c511e0b8442f0ddd4265137446180d5ced3f1671
Author: Michal Krol <[email protected]> Date: Mon Nov 23 11:32:58 2009 +0100 tgsi: Clamp the source argument in micro_exp2() to avoid Inf. --- src/gallium/auxiliary/tgsi/tgsi_exec.c | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-) diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c index d52c94f..af914f6 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_exec.c +++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c @@ -578,6 +578,24 @@ micro_exp2( dst->f[2] = util_fast_exp2( src->f[2] ); dst->f[3] = util_fast_exp2( src->f[3] ); #else + +#if DEBUG + /* Inf is okay for this instruction, so clamp it to silence assertions. */ + uint i; + union tgsi_exec_channel clamped; + + for (i = 0; i < 4; i++) { + if (src->f[i] > 127.99999f) { + clamped.f[i] = 127.99999f; + } else if (src->f[i] < -126.99999f) { + clamped.f[i] = -126.99999f; + } else { + clamped.f[i] = src->f[i]; + } + } + src = &clamped; +#endif + dst->f[0] = powf( 2.0f, src->f[0] ); dst->f[1] = powf( 2.0f, src->f[1] ); dst->f[2] = powf( 2.0f, src->f[2] ); _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
