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nir,spirv: add sparse image loads

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7774>
This commit is contained in:
Rhys Perry
2020-11-20 16:14:26 +00:00
committed by Marge Bot
parent 3a7972f72a
commit 1fd8b46667
9 changed files with 62 additions and 11 deletions
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src/compiler/nir/nir_lower_input_attachments.c
+14 -4
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@@ -123,6 +123,7 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load,
}
tex->is_array = true;
tex->is_shadow = false;
tex->is_sparse = load->intrinsic == nir_intrinsic_image_deref_sparse_load;
tex->texture_index = 0;
tex->sampler_index = 0;
@@ -145,11 +146,19 @@ try_lower_input_load(nir_function_impl *impl, nir_intrinsic_instr *load,
tex->texture_non_uniform = nir_intrinsic_access(load) & ACCESS_NON_UNIFORM;
nir_ssa_dest_init(&tex->instr, &tex->dest, 4, 32, NULL);
nir_ssa_dest_init(&tex->instr, &tex->dest, nir_tex_instr_dest_size(tex), 32, NULL);
nir_builder_instr_insert(&b, &tex->instr);
nir_ssa_def_rewrite_uses(&load->dest.ssa,
nir_src_for_ssa(&tex->dest.ssa));
if (tex->is_sparse) {
unsigned load_result_size = load->dest.ssa.num_components - 1;
nir_ssa_def *res = nir_channels(
&b, &tex->dest.ssa, BITFIELD_MASK(load_result_size) | 0x10);
nir_ssa_def_rewrite_uses(&load->dest.ssa, nir_src_for_ssa(res));
} else {
nir_ssa_def_rewrite_uses(&load->dest.ssa,
nir_src_for_ssa(&tex->dest.ssa));
}
return true;
}
@@ -208,7 +217,8 @@ nir_lower_input_attachments(nir_shader *shader,
case nir_instr_type_intrinsic: {
nir_intrinsic_instr *load = nir_instr_as_intrinsic(instr);
if (load->intrinsic == nir_intrinsic_image_deref_load) {
if (load->intrinsic == nir_intrinsic_image_deref_load ||
load->intrinsic == nir_intrinsic_image_deref_sparse_load) {
progress |= try_lower_input_load(function->impl, load,
options);
}