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pan/bi: Implement load_vary via the builder

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8135>
This commit is contained in:
Alyssa Rosenzweig 2020-12-08 08:39:20 -05:00 • committed by Marge Bot
parent baec458105
commit 20bfe9ee05
1 changed files with 54 additions and 0 deletions
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54
src/panfrost/bifrost/bifrost_compile.c
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@ -228,6 +228,60 @@ bi_is_intr_immediate(nir_intrinsic_instr *instr, unsigned *immediate)
return (*immediate) < 20;
}
static void
bi_emit_load_vary(bi_builder *b, nir_intrinsic_instr *instr)
{
enum bi_sample sample = BI_SAMPLE_CENTER;
enum bi_update update = BI_UPDATE_STORE;
enum bi_register_format regfmt = BI_REGISTER_FORMAT_AUTO;
enum bi_vecsize vecsize = instr->num_components - 1;
bool smooth = instr->intrinsic == nir_intrinsic_load_interpolated_input;
if (smooth) {
nir_intrinsic_instr *parent = nir_src_as_intrinsic(instr->src[0]);
assert(parent);
sample = bi_interp_for_intrinsic(parent->intrinsic);
} else {
regfmt = bi_reg_fmt_for_nir(nir_intrinsic_dest_type(instr));
}
/* Ignored for non-conditional center and retrieve modes (use an
* efficient encoding), otherwise R61 for sample mask XXX RA */
bi_index src0 = (sample == BI_SAMPLE_CENTER) ? bi_passthrough(BIFROST_SRC_FAU_HI) :
bi_register(61);
nir_src *offset = nir_get_io_offset_src(instr);
unsigned imm_index = 0;
bool immediate = bi_is_intr_immediate(instr, &imm_index);
if (immediate && smooth) {
bi_ld_var_imm_to(b, bi_dest_index(&instr->dest),
src0, regfmt, sample, update, vecsize,
imm_index);
} else if (immediate && !smooth) {
bi_ld_var_flat_imm_to(b, bi_dest_index(&instr->dest),
BI_FUNCTION_NONE, regfmt, vecsize, imm_index);
} else {
bi_index idx = bi_src_index(offset);
unsigned base = nir_intrinsic_base(instr);
if (base != 0)
idx = bi_iadd_u32(b, idx, bi_imm_u32(base), false);
if (smooth) {
bi_ld_var_to(b, bi_dest_index(&instr->dest),
src0, idx, regfmt, sample, update,
vecsize);
} else {
bi_ld_var_flat_to(b, bi_dest_index(&instr->dest),
idx, BI_FUNCTION_NONE, regfmt,
vecsize);
}
}
}
static void
bi_emit_ld_vary(bi_context *ctx, nir_intrinsic_instr *instr)
{