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nir: Add an opcode for stomping a 32-bit value to 16-bit precision

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This correlates directly to the SPIR-V opcode OpQuantizeToF16

Reviewed-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Jason Ekstrand 2016-03-25 13:58:17 -07:00
parent 60e1c6a7fc
commit de60e250f5
1 changed files with 1 additions and 0 deletions
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src/compiler/nir/nir_opcodes.py
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@ -180,6 +180,7 @@ unop("ffloor", tfloat, "bit_size == 64 ? floor(src0) : floorf(src0)")
unop("ffract", tfloat, "src0 - (bit_size == 64 ? floor(src0) : floorf(src0))")
unop("fround_even", tfloat, "bit_size == 64 ? _mesa_roundeven(src0) : _mesa_roundevenf(src0)")
unop("fquantize2f16", tfloat, "(fabs(src0) < ldexpf(1.0, -14)) ? copysignf(0.0f, src0) : _mesa_half_to_float(_mesa_float_to_half(src0))")
# Trigonometric operations.