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st/nine: Use FLT_MAX/2 for RCP clamping

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This seems to fix Rayman (which adds things
to the RCP result, and thus gets an Inf),
while not having regressions.

Signed-off-by: Axel Davy <davyaxel0@gmail.com>
This commit is contained in:
Axel Davy 2019-02-22 20:41:00 +01:00
parent 64a45ba7f8
commit 394420ebb3
1 changed files with 3 additions and 2 deletions
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5
src/gallium/state_trackers/nine/nine_shader.c
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@ -2333,8 +2333,9 @@ DECL_SPECIAL(RCP)
struct ureg_dst tmp = tx->mul_zero_wins ? dst : tx_scratch(tx);
ureg_RCP(ureg, tmp, src);
if (!tx->mul_zero_wins) {
ureg_MIN(ureg, tmp, ureg_imm1f(ureg, FLT_MAX), ureg_src(tmp));
ureg_MAX(ureg, dst, ureg_imm1f(ureg, -FLT_MAX), ureg_src(tmp));
/* FLT_MAX has issues with Rayman */
ureg_MIN(ureg, tmp, ureg_imm1f(ureg, FLT_MAX/2.f), ureg_src(tmp));
ureg_MAX(ureg, dst, ureg_imm1f(ureg, -FLT_MAX/2.f), ureg_src(tmp));
}
return D3D_OK;
}