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zink: handle fs interpolation functions in ntv

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basically load_deref but with different ops

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8203>
This commit is contained in:
Mike Blumenkrantz 2020-07-24 08:43:08 -04:00 • committed by Marge Bot
parent 96746d6557
commit 8676bd4420
1 changed files with 37 additions and 0 deletions
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37
src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
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@ -1957,6 +1957,37 @@ emit_load_vec_input(struct ntv_context *ctx, nir_intrinsic_instr *intr, SpvId *v
store_dest(ctx, &intr->dest, result, type);
}
static void
emit_interpolate(struct ntv_context *ctx, nir_intrinsic_instr *intr)
{
SpvId op;
spirv_builder_emit_cap(&ctx->builder, SpvCapabilityInterpolationFunction);
switch (intr->intrinsic) {
case nir_intrinsic_interp_deref_at_centroid:
op = GLSLstd450InterpolateAtCentroid;
break;
case nir_intrinsic_interp_deref_at_sample:
op = GLSLstd450InterpolateAtSample;
break;
case nir_intrinsic_interp_deref_at_offset:
op = GLSLstd450InterpolateAtOffset;
break;
default:
unreachable("unknown interp op");
}
SpvId ptr = get_src(ctx, &intr->src[0]);
SpvId result;
if (intr->intrinsic == nir_intrinsic_interp_deref_at_centroid)
result = emit_builtin_unop(ctx, op, get_glsl_type(ctx, nir_src_as_deref(intr->src[0])->type), ptr);
else
result = emit_builtin_binop(ctx, op, get_glsl_type(ctx, nir_src_as_deref(intr->src[0])->type),
ptr, get_src(ctx, &intr->src[1]));
unsigned num_components = nir_dest_num_components(intr->dest);
unsigned bit_size = nir_dest_bit_size(intr->dest);
result = bitcast_to_uvec(ctx, result, bit_size, num_components);
store_dest(ctx, &intr->dest, result, nir_type_uint);
}
static void
emit_intrinsic(struct ntv_context *ctx, nir_intrinsic_instr *intr)
{
@ -2047,6 +2078,12 @@ emit_intrinsic(struct ntv_context *ctx, nir_intrinsic_instr *intr)
SpvMemorySemanticsWorkgroupMemoryMask | SpvMemorySemanticsAcquireMask);
break;
case nir_intrinsic_interp_deref_at_centroid:
case nir_intrinsic_interp_deref_at_sample:
case nir_intrinsic_interp_deref_at_offset:
emit_interpolate(ctx, intr);
break;
default:
fprintf(stderr, "emit_intrinsic: not implemented (%s)\n",
nir_intrinsic_infos[intr->intrinsic].name);