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pan/bi: Implement interpolateAtSample

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Passes dEQP-GLES31.functional.shaders.multisample_interpolation.interpolate_at_sample.*

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9105>
This commit is contained in:
Alyssa Rosenzweig 2021-02-16 18:58:22 -05:00 • committed by Marge Bot
parent 1f265ef6c1
commit e4ae458df8
1 changed files with 23 additions and 6 deletions
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29
src/panfrost/bifrost/bifrost_compile.c
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@ -82,6 +82,25 @@ bi_emit_jump(bi_builder *b, nir_jump_instr *instr)
b->shader->current_block->base.unconditional_jumps = true;
}
static bi_index
bi_varying_src0_for_barycentric(bi_builder *b, nir_intrinsic_instr *intr)
{
switch (intr->intrinsic) {
case nir_intrinsic_load_barycentric_centroid:
case nir_intrinsic_load_barycentric_sample:
return bi_register(61);
/* Need to put the sample ID in the top 16-bits */
case nir_intrinsic_load_barycentric_at_sample:
return bi_mkvec_v2i16(b, bi_half(bi_dontcare(), false),
bi_half(bi_src_index(&intr->src[0]), false));
case nir_intrinsic_load_barycentric_pixel:
default:
return bi_dontcare();
}
}
static enum bi_sample
bi_interp_for_intrinsic(nir_intrinsic_op op)
{
@ -89,6 +108,7 @@ bi_interp_for_intrinsic(nir_intrinsic_op op)
case nir_intrinsic_load_barycentric_centroid:
return BI_SAMPLE_CENTROID;
case nir_intrinsic_load_barycentric_sample:
case nir_intrinsic_load_barycentric_at_sample:
return BI_SAMPLE_SAMPLE;
case nir_intrinsic_load_barycentric_pixel:
default:
@ -165,22 +185,18 @@ bi_emit_load_vary(bi_builder *b, nir_intrinsic_instr *instr)
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;
bi_index src0 = bi_null();
if (smooth) {
nir_intrinsic_instr *parent = nir_src_as_intrinsic(instr->src[0]);
assert(parent);
sample = bi_interp_for_intrinsic(parent->intrinsic);
src0 = bi_varying_src0_for_barycentric(b, parent);
} 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_dontcare() :
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, 20);
@ -884,6 +900,7 @@ bi_emit_intrinsic(bi_builder *b, nir_intrinsic_instr *instr)
case nir_intrinsic_load_barycentric_pixel:
case nir_intrinsic_load_barycentric_centroid:
case nir_intrinsic_load_barycentric_sample:
case nir_intrinsic_load_barycentric_at_sample:
/* handled later via load_vary */
break;
case nir_intrinsic_load_interpolated_input: