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spirv,nir: Add ray-tracing intrinsics

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Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6479>
This commit is contained in:
Jason Ekstrand
2020-05-14 14:40:48 -05:00
committed by Marge Bot
parent 21b1b91549
commit 5a28893279
5 changed files with 113 additions and 1 deletions
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20
src/compiler/spirv/vtn_variables.c
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@@ -1716,6 +1716,18 @@ assign_missing_member_locations(struct vtn_variable *var)
}
}
nir_deref_instr *
vtn_get_call_payload_for_location(struct vtn_builder *b, uint32_t location_id)
{
uint32_t location = vtn_constant_uint(b, location_id);
nir_foreach_variable_with_modes(var, b->nb.shader, nir_var_shader_temp) {
if (var->data.explicit_location &&
var->data.location == location)
return nir_build_deref_var(&b->nb, var);
}
vtn_fail("Couldn't find variable with a storage class of CallableDataKHR "
"or RayPayloadKHR and location %d", location);
}
static void
vtn_create_variable(struct vtn_builder *b, struct vtn_value *val,
@@ -1813,6 +1825,14 @@ vtn_create_variable(struct vtn_builder *b, struct vtn_value *val,
var->var = rzalloc(b->shader, nir_variable);
var->var->name = ralloc_strdup(var->var, val->name);
var->var->type = vtn_type_get_nir_type(b, var->type, var->mode);
/* This is a total hack but we need some way to flag variables which are
* going to be call payloads. See get_call_payload_deref.
*/
if (storage_class == SpvStorageClassCallableDataKHR ||
storage_class == SpvStorageClassRayPayloadKHR)
var->var->data.explicit_location = true;
var->var->data.mode = nir_mode;
var->var->data.location = -1;
var->var->interface_type = NULL;