tgsi: Clamp the source argument in micro_exp2() to avoid Inf.
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@ -578,6 +578,24 @@ micro_exp2(
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dst->f[2] = util_fast_exp2( src->f[2] );
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dst->f[3] = util_fast_exp2( src->f[3] );
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#else
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#if DEBUG
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/* Inf is okay for this instruction, so clamp it to silence assertions. */
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uint i;
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union tgsi_exec_channel clamped;
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for (i = 0; i < 4; i++) {
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if (src->f[i] > 127.99999f) {
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clamped.f[i] = 127.99999f;
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} else if (src->f[i] < -126.99999f) {
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clamped.f[i] = -126.99999f;
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} else {
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clamped.f[i] = src->f[i];
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}
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}
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src = &clamped;
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#endif
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dst->f[0] = powf( 2.0f, src->f[0] );
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dst->f[1] = powf( 2.0f, src->f[1] );
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dst->f[2] = powf( 2.0f, src->f[2] );
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