[Mesa-dev] [PATCH 19/26] nir: Add an opcode for stomping a 32-bit value to 16-bit precision

[Jason Ekstrand]

This correlates directly to the SPIR-V opcode OpQuantizeToF16
---
 src/compiler/nir/nir_opcodes.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/nir/nir_opcodes.py b/src/compiler/nir/nir_opcodes.py
index 7c8a322..d6b658d 100644
--- a/src/compiler/nir/nir_opcodes.py
+++ b/src/compiler/nir/nir_opcodes.py
@@ -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.
 
-- 
2.5.0.400.gff86faf