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compiler/spirv: flag nclamp/nmin/nmax as exact

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3716>
This commit is contained in:
Rhys Perry
2020-02-03 21:18:42 +00:00
committed by Marge Bot
parent 9a11aa4ece
commit d8a27c0bb3
1 changed files with 15 additions and 8 deletions
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src/compiler/spirv/vtn_glsl450.c
+15 -8
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@@ -219,8 +219,10 @@ build_asin(nir_builder *b, nir_ssa_def *x, float p0, float p1)
static nir_op
vtn_nir_alu_op_for_spirv_glsl_opcode(struct vtn_builder *b,
enum GLSLstd450 opcode,
unsigned execution_mode)
unsigned execution_mode,
bool *exact)
{
*exact = false;
switch (opcode) {
case GLSLstd450Round: return nir_op_fround_even;
case GLSLstd450RoundEven: return nir_op_fround_even;
@@ -239,11 +241,11 @@ vtn_nir_alu_op_for_spirv_glsl_opcode(struct vtn_builder *b,
case GLSLstd450Log2: return nir_op_flog2;
case GLSLstd450Sqrt: return nir_op_fsqrt;
case GLSLstd450InverseSqrt: return nir_op_frsq;
case GLSLstd450NMin: return nir_op_fmin;
case GLSLstd450NMin: *exact = true; return nir_op_fmin;
case GLSLstd450FMin: return nir_op_fmin;
case GLSLstd450UMin: return nir_op_umin;
case GLSLstd450SMin: return nir_op_imin;
case GLSLstd450NMax: return nir_op_fmax;
case GLSLstd450NMax: *exact = true; return nir_op_fmax;
case GLSLstd450FMax: return nir_op_fmax;
case GLSLstd450UMax: return nir_op_umax;
case GLSLstd450SMax: return nir_op_imax;
@@ -353,9 +355,13 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
return;
case GLSLstd450FClamp:
case GLSLstd450NClamp:
val->ssa->def = nir_fclamp(nb, src[0], src[1], src[2]);
return;
case GLSLstd450NClamp:
nb->exact = true;
val->ssa->def = nir_fclamp(nb, src[0], src[1], src[2]);
nb->exact = false;
return;
case GLSLstd450UClamp:
val->ssa->def = nir_uclamp(nb, src[0], src[1], src[2]);
return;
@@ -515,10 +521,11 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint,
default: {
unsigned execution_mode =
b->shader->info.float_controls_execution_mode;
val->ssa->def =
nir_build_alu(&b->nb,
vtn_nir_alu_op_for_spirv_glsl_opcode(b, entrypoint, execution_mode),
src[0], src[1], src[2], NULL);
bool exact;
nir_op op = vtn_nir_alu_op_for_spirv_glsl_opcode(b, entrypoint, execution_mode, &exact);
b->nb.exact = exact;
val->ssa->def = nir_build_alu(&b->nb, op, src[0], src[1], src[2], NULL);
b->nb.exact = false;
return;
}
}