diff options
| -rw-r--r-- | src/compiler/glsl/float64.glsl | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/compiler/glsl/float64.glsl b/src/compiler/glsl/float64.glsl index 46cae0a4cdb..6208a37757e 100644 --- a/src/compiler/glsl/float64.glsl +++ b/src/compiler/glsl/float64.glsl @@ -676,11 +676,11 @@ __fadd64(uint64_t a, uint64_t b) uint bFracHi = __extractFloat64FracHi(b); int aExp = __extractFloat64Exp(a); int bExp = __extractFloat64Exp(b); - uint zFrac0 = 0u; - uint zFrac1 = 0u; int expDiff = aExp - bExp; if (aSign == bSign) { - uint zFrac2 = 0u; + uint zFrac0; + uint zFrac1; + uint zFrac2; int zExp; bool orig_exp_diff_is_zero = (expDiff == 0); @@ -736,6 +736,9 @@ __fadd64(uint64_t a, uint64_t b) __shortShift64Left(aFracHi, aFracLo, 10, aFracHi, aFracLo); __shortShift64Left(bFracHi, bFracLo, 10, bFracHi, bFracLo); if (0 < expDiff) { + uint zFrac0; + uint zFrac1; + if (aExp == 0x7FF) { bool propagate = (aFracHi | aFracLo) != 0u; return mix(a, __propagateFloat64NaN(a, b), propagate); @@ -750,6 +753,9 @@ __fadd64(uint64_t a, uint64_t b) return __normalizeRoundAndPackFloat64(aSign, zExp - 10, zFrac0, zFrac1); } if (expDiff < 0) { + uint zFrac0; + uint zFrac1; + if (bExp == 0x7FF) { bool propagate = (bFracHi | bFracLo) != 0u; return mix(__packFloat64(aSign ^ 0x80000000u, 0x7ff, 0u, 0u), __propagateFloat64NaN(a, b), propagate); @@ -770,6 +776,9 @@ __fadd64(uint64_t a, uint64_t b) } bExp = mix(bExp, 1, aExp == 0); aExp = mix(aExp, 1, aExp == 0); + + uint zFrac0 = 0; + uint zFrac1 = 0; bool zexp_normal = false; uint sign_of_difference = 0; if (bFracHi < aFracHi) { |