* either one or two additional scalar arguments with the same meaning as in
* the ARB_shader_image_load_store specification.
*/
- INTRINSIC(image_load, 2, ARR(4, 1), true, 4, 1, 0,
+ INTRINSIC(image_load, 2, ARR(4, 1), true, 4, 1, 0, xx, xx, xx,
NIR_INTRINSIC_CAN_ELIMINATE)
- INTRINSIC(image_store, 3, ARR(4, 1, 4), false, 0, 1, 0, 0)
- INTRINSIC(image_atomic_add, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_min, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_max, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_and, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_or, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_xor, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_exchange, 3, ARR(4, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_atomic_comp_swap, 4, ARR(4, 1, 1, 1), true, 1, 1, 0, 0)
- INTRINSIC(image_size, 0, ARR(), true, 4, 1, 0,
+ INTRINSIC(image_store, 3, ARR(4, 1, 4), false, 0, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_add, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_min, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_max, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_and, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_or, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_xor, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_exchange, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_atomic_comp_swap, 4, ARR(4, 1, 1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+ INTRINSIC(image_size, 0, ARR(), true, 4, 1, 0, xx, xx, xx,
NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
- INTRINSIC(image_samples, 0, ARR(), true, 1, 1, 0,
+ INTRINSIC(image_samples, 0, ARR(), true, 1, 1, 0, xx, xx, xx,
NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
- INTRINSIC(vulkan_resource_index, 1, ARR(1), true, 1, 0, 3,
+/*
+ * Vulkan descriptor set intrinsic
+ *
+ * The Vulkan API uses a different binding model from GL. In the Vulkan
+ * API, all external resources are represented by a tripple:
+ *
+ * (descriptor set, binding, array index)
+ *
+ * where the array index is the only thing allowed to be indirect. The
+ * vulkan_surface_index intrinsic takes the descriptor set and binding as
+ * its first two indices and the array index as its source. The third
+ * index is a nir_variable_mode in case that's useful to the backend.
+ *
+ * The intended usage is that the shader will call vulkan_surface_index to
+ * get an index and then pass that as the buffer index ubo/ssbo calls.
+ */
- INTRINSIC(var_atomic_add, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_imin, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_umin, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_imax, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_umax, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_and, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_or, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_xor, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_exchange, 1, ARR(1), true, 1, 1, 0, 0)
- INTRINSIC(var_atomic_comp_swap, 2, ARR(1, 1), true, 1, 1, 0, 0)
++INTRINSIC(vulkan_resource_index, 1, ARR(1), true, 1, 0, 2,
++ DESC_SET, BINDING, xx,
+ NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
+
+/*
+ * variable atomic intrinsics
+ *
+ * All of these variable atomic memory operations read a value from memory,
+ * compute a new value using one of the operations below, write the new value
+ * to memory, and return the original value read.
+ *
+ * All operations take 1 source except CompSwap that takes 2. These sources
+ * represent:
+ *
+ * 0: The data parameter to the atomic function (i.e. the value to add
+ * in shared_atomic_add, etc).
+ * 1: For CompSwap only: the second data parameter.
+ *
+ * All operations take 1 variable deref.
+ */
++INTRINSIC(var_atomic_add, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_imin, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_umin, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_imax, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_umax, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_and, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_or, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_xor, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_exchange, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0)
++INTRINSIC(var_atomic_comp_swap, 2, ARR(1, 1), true, 1, 1, 0, xx, xx, xx, 0)
+
/*
* SSBO atomic intrinsics
*
* offsets are always in bytes.
*/
- #define LOAD(name, srcs, indices, flags) \
- INTRINSIC(load_##name, srcs, ARR(1, 1, 1, 1), true, 0, 0, indices, flags)
+ #define LOAD(name, srcs, num_indices, idx0, idx1, idx2, flags) \
+ INTRINSIC(load_##name, srcs, ARR(1, 1, 1, 1), true, 0, 0, num_indices, idx0, idx1, idx2, flags)
- /* src[] = { offset }. const_index[] = { base, size } */
- LOAD(uniform, 1, 2, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
-/* src[] = { offset }. const_index[] = { base } */
-LOAD(uniform, 1, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
++/* src[] = { offset }. const_index[] = { base, range } */
++LOAD(uniform, 1, 2, BASE, RANGE, xx,
++ NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
/* src[] = { buffer_index, offset }. No const_index */
- LOAD(ubo, 2, 0, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
+ LOAD(ubo, 2, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
/* src[] = { offset }. const_index[] = { base } */
- LOAD(input, 1, 1, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
+ LOAD(input, 1, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
/* src[] = { vertex, offset }. const_index[] = { base } */
- LOAD(per_vertex_input, 2, 1, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
+ LOAD(per_vertex_input, 2, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
/* src[] = { buffer_index, offset }. No const_index */
- LOAD(ssbo, 2, 0, NIR_INTRINSIC_CAN_ELIMINATE)
+ LOAD(ssbo, 2, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
/* src[] = { offset }. const_index[] = { base } */
- LOAD(output, 1, 1, NIR_INTRINSIC_CAN_ELIMINATE)
+ LOAD(output, 1, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
/* src[] = { vertex, offset }. const_index[] = { base } */
- LOAD(per_vertex_output, 2, 1, NIR_INTRINSIC_CAN_ELIMINATE)
+ LOAD(per_vertex_output, 2, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
/* src[] = { offset }. const_index[] = { base } */
- LOAD(shared, 1, 1, NIR_INTRINSIC_CAN_ELIMINATE)
- /* src[] = { offset }. const_index[] = { base, size } */
- LOAD(push_constant, 1, 2, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
+ LOAD(shared, 1, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE)
++/* src[] = { offset }. const_index[] = { base, range } */
++LOAD(push_constant, 1, 2, BASE, RANGE, xx,
++ NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER)
/*
* Stores work the same way as loads, except now the first source is the value
--- /dev/null
- instr->const_index[0] = chain->var->descriptor_set;
- instr->const_index[1] = chain->var->binding;
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ * Jason Ekstrand (jason@jlekstrand.net)
+ *
+ */
+
+#include "vtn_private.h"
+
+static struct vtn_access_chain *
+vtn_access_chain_extend(struct vtn_builder *b, struct vtn_access_chain *old,
+ unsigned new_ids)
+{
+ struct vtn_access_chain *chain;
+
+ unsigned new_len = old->length + new_ids;
+ chain = ralloc_size(b, sizeof(*chain) + new_len * sizeof(chain->link[0]));
+
+ chain->var = old->var;
+ chain->length = new_len;
+
+ for (unsigned i = 0; i < old->length; i++)
+ chain->link[i] = old->link[i];
+
+ return chain;
+}
+
+static nir_ssa_def *
+vtn_access_link_as_ssa(struct vtn_builder *b, struct vtn_access_link link,
+ unsigned stride)
+{
+ assert(stride > 0);
+ if (link.mode == vtn_access_mode_literal) {
+ return nir_imm_int(&b->nb, link.id * stride);
+ } else if (stride == 1) {
+ return vtn_ssa_value(b, link.id)->def;
+ } else {
+ return nir_imul(&b->nb, vtn_ssa_value(b, link.id)->def,
+ nir_imm_int(&b->nb, stride));
+ }
+}
+
+static struct vtn_type *
+vtn_access_chain_tail_type(struct vtn_builder *b,
+ struct vtn_access_chain *chain)
+{
+ struct vtn_type *type = chain->var->type;
+ for (unsigned i = 0; i < chain->length; i++) {
+ if (glsl_type_is_struct(type->type)) {
+ assert(chain->link[i].mode == vtn_access_mode_literal);
+ type = type->members[chain->link[i].id];
+ } else {
+ type = type->array_element;
+ }
+ }
+ return type;
+}
+
+/* Crawls a chain of array derefs and rewrites the types so that the
+ * lengths stay the same but the terminal type is the one given by
+ * tail_type. This is useful for split structures.
+ */
+static void
+rewrite_deref_types(nir_deref *deref, const struct glsl_type *type)
+{
+ deref->type = type;
+ if (deref->child) {
+ assert(deref->child->deref_type == nir_deref_type_array);
+ assert(glsl_type_is_array(deref->type));
+ rewrite_deref_types(deref->child, glsl_get_array_element(type));
+ }
+}
+
+nir_deref_var *
+vtn_access_chain_to_deref(struct vtn_builder *b, struct vtn_access_chain *chain)
+{
+ nir_deref_var *deref_var;
+ if (chain->var->var) {
+ deref_var = nir_deref_var_create(b, chain->var->var);
+ } else {
+ assert(chain->var->members);
+ /* Create the deref_var manually. It will get filled out later. */
+ deref_var = rzalloc(b, nir_deref_var);
+ deref_var->deref.deref_type = nir_deref_type_var;
+ }
+
+ struct vtn_type *deref_type = chain->var->type;
+ nir_deref *tail = &deref_var->deref;
+ nir_variable **members = chain->var->members;
+
+ for (unsigned i = 0; i < chain->length; i++) {
+ enum glsl_base_type base_type = glsl_get_base_type(deref_type->type);
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_DOUBLE:
+ case GLSL_TYPE_BOOL:
+ case GLSL_TYPE_ARRAY: {
+ deref_type = deref_type->array_element;
+
+ nir_deref_array *deref_arr = nir_deref_array_create(b);
+ deref_arr->deref.type = deref_type->type;
+
+ if (chain->link[i].mode == vtn_access_mode_literal) {
+ deref_arr->deref_array_type = nir_deref_array_type_direct;
+ deref_arr->base_offset = chain->link[i].id;
+ } else {
+ assert(chain->link[i].mode == vtn_access_mode_id);
+ deref_arr->deref_array_type = nir_deref_array_type_indirect;
+ deref_arr->base_offset = 0;
+ deref_arr->indirect =
+ nir_src_for_ssa(vtn_ssa_value(b, chain->link[i].id)->def);
+ }
+ tail->child = &deref_arr->deref;
+ tail = tail->child;
+ break;
+ }
+
+ case GLSL_TYPE_STRUCT: {
+ assert(chain->link[i].mode == vtn_access_mode_literal);
+ unsigned idx = chain->link[i].id;
+ deref_type = deref_type->members[idx];
+ if (members) {
+ /* This is a pre-split structure. */
+ deref_var->var = members[idx];
+ rewrite_deref_types(&deref_var->deref, members[idx]->type);
+ assert(tail->type == deref_type->type);
+ members = NULL;
+ } else {
+ nir_deref_struct *deref_struct = nir_deref_struct_create(b, idx);
+ deref_struct->deref.type = deref_type->type;
+ tail->child = &deref_struct->deref;
+ tail = tail->child;
+ }
+ break;
+ }
+ default:
+ unreachable("Invalid type for deref");
+ }
+ }
+
+ assert(members == NULL);
+ return deref_var;
+}
+
+static void
+_vtn_local_load_store(struct vtn_builder *b, bool load, nir_deref_var *deref,
+ nir_deref *tail, struct vtn_ssa_value *inout)
+{
+ /* The deref tail may contain a deref to select a component of a vector (in
+ * other words, it might not be an actual tail) so we have to save it away
+ * here since we overwrite it later.
+ */
+ nir_deref *old_child = tail->child;
+
+ if (glsl_type_is_vector_or_scalar(tail->type)) {
+ /* Terminate the deref chain in case there is one more link to pick
+ * off a component of the vector.
+ */
+ tail->child = NULL;
+
+ nir_intrinsic_op op = load ? nir_intrinsic_load_var :
+ nir_intrinsic_store_var;
+
+ nir_intrinsic_instr *intrin = nir_intrinsic_instr_create(b->shader, op);
+ intrin->variables[0] =
+ nir_deref_as_var(nir_copy_deref(intrin, &deref->deref));
+ intrin->num_components = glsl_get_vector_elements(tail->type);
+
+ if (load) {
+ nir_ssa_dest_init(&intrin->instr, &intrin->dest,
+ intrin->num_components, NULL);
+ inout->def = &intrin->dest.ssa;
+ } else {
+ intrin->const_index[0] = (1 << intrin->num_components) - 1;
+ intrin->src[0] = nir_src_for_ssa(inout->def);
+ }
+
+ nir_builder_instr_insert(&b->nb, &intrin->instr);
+ } else if (glsl_get_base_type(tail->type) == GLSL_TYPE_ARRAY ||
+ glsl_type_is_matrix(tail->type)) {
+ unsigned elems = glsl_get_length(tail->type);
+ nir_deref_array *deref_arr = nir_deref_array_create(b);
+ deref_arr->deref_array_type = nir_deref_array_type_direct;
+ deref_arr->deref.type = glsl_get_array_element(tail->type);
+ tail->child = &deref_arr->deref;
+ for (unsigned i = 0; i < elems; i++) {
+ deref_arr->base_offset = i;
+ _vtn_local_load_store(b, load, deref, tail->child, inout->elems[i]);
+ }
+ } else {
+ assert(glsl_get_base_type(tail->type) == GLSL_TYPE_STRUCT);
+ unsigned elems = glsl_get_length(tail->type);
+ nir_deref_struct *deref_struct = nir_deref_struct_create(b, 0);
+ tail->child = &deref_struct->deref;
+ for (unsigned i = 0; i < elems; i++) {
+ deref_struct->index = i;
+ deref_struct->deref.type = glsl_get_struct_field(tail->type, i);
+ _vtn_local_load_store(b, load, deref, tail->child, inout->elems[i]);
+ }
+ }
+
+ tail->child = old_child;
+}
+
+nir_deref_var *
+vtn_nir_deref(struct vtn_builder *b, uint32_t id)
+{
+ struct vtn_access_chain *chain =
+ vtn_value(b, id, vtn_value_type_access_chain)->access_chain;
+
+ return vtn_access_chain_to_deref(b, chain);
+}
+
+/*
+ * Gets the NIR-level deref tail, which may have as a child an array deref
+ * selecting which component due to OpAccessChain supporting per-component
+ * indexing in SPIR-V.
+ */
+static nir_deref *
+get_deref_tail(nir_deref_var *deref)
+{
+ nir_deref *cur = &deref->deref;
+ while (!glsl_type_is_vector_or_scalar(cur->type) && cur->child)
+ cur = cur->child;
+
+ return cur;
+}
+
+struct vtn_ssa_value *
+vtn_local_load(struct vtn_builder *b, nir_deref_var *src)
+{
+ nir_deref *src_tail = get_deref_tail(src);
+ struct vtn_ssa_value *val = vtn_create_ssa_value(b, src_tail->type);
+ _vtn_local_load_store(b, true, src, src_tail, val);
+
+ if (src_tail->child) {
+ nir_deref_array *vec_deref = nir_deref_as_array(src_tail->child);
+ assert(vec_deref->deref.child == NULL);
+ val->type = vec_deref->deref.type;
+ if (vec_deref->deref_array_type == nir_deref_array_type_direct)
+ val->def = vtn_vector_extract(b, val->def, vec_deref->base_offset);
+ else
+ val->def = vtn_vector_extract_dynamic(b, val->def,
+ vec_deref->indirect.ssa);
+ }
+
+ return val;
+}
+
+void
+vtn_local_store(struct vtn_builder *b, struct vtn_ssa_value *src,
+ nir_deref_var *dest)
+{
+ nir_deref *dest_tail = get_deref_tail(dest);
+
+ if (dest_tail->child) {
+ struct vtn_ssa_value *val = vtn_create_ssa_value(b, dest_tail->type);
+ _vtn_local_load_store(b, true, dest, dest_tail, val);
+ nir_deref_array *deref = nir_deref_as_array(dest_tail->child);
+ assert(deref->deref.child == NULL);
+ if (deref->deref_array_type == nir_deref_array_type_direct)
+ val->def = vtn_vector_insert(b, val->def, src->def,
+ deref->base_offset);
+ else
+ val->def = vtn_vector_insert_dynamic(b, val->def, src->def,
+ deref->indirect.ssa);
+ _vtn_local_load_store(b, false, dest, dest_tail, val);
+ } else {
+ _vtn_local_load_store(b, false, dest, dest_tail, src);
+ }
+}
+
+static nir_ssa_def *
+get_vulkan_resource_index(struct vtn_builder *b, struct vtn_access_chain *chain,
+ struct vtn_type **type, unsigned *chain_idx)
+{
+ /* Push constants have no explicit binding */
+ if (chain->var->mode == vtn_variable_mode_push_constant) {
+ *chain_idx = 0;
+ *type = chain->var->type;
+ return NULL;
+ }
+
+ nir_ssa_def *array_index;
+ if (glsl_type_is_array(chain->var->type->type)) {
+ assert(chain->length > 0);
+ array_index = vtn_access_link_as_ssa(b, chain->link[0], 1);
+ *chain_idx = 1;
+ *type = chain->var->type->array_element;
+ } else {
+ array_index = nir_imm_int(&b->nb, 0);
+ *chain_idx = 0;
+ *type = chain->var->type;
+ }
+
+ nir_intrinsic_instr *instr =
+ nir_intrinsic_instr_create(b->nb.shader,
+ nir_intrinsic_vulkan_resource_index);
+ instr->src[0] = nir_src_for_ssa(array_index);
++ nir_intrinsic_set_desc_set(instr, chain->var->descriptor_set);
++ nir_intrinsic_set_binding(instr, chain->var->binding);
+
+ nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL);
+ nir_builder_instr_insert(&b->nb, &instr->instr);
+
+ return &instr->dest.ssa;
+}
+
+nir_ssa_def *
+vtn_access_chain_to_offset(struct vtn_builder *b,
+ struct vtn_access_chain *chain,
+ nir_ssa_def **index_out, struct vtn_type **type_out,
+ unsigned *end_idx_out, bool stop_at_matrix)
+{
+ unsigned idx = 0;
+ struct vtn_type *type;
+ *index_out = get_vulkan_resource_index(b, chain, &type, &idx);
+
+ nir_ssa_def *offset = nir_imm_int(&b->nb, 0);
+ for (; idx < chain->length; idx++) {
+ enum glsl_base_type base_type = glsl_get_base_type(type->type);
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_DOUBLE:
+ case GLSL_TYPE_BOOL:
+ /* Some users may not want matrix or vector derefs */
+ if (stop_at_matrix)
+ goto end;
+ /* Fall through */
+
+ case GLSL_TYPE_ARRAY:
+ offset = nir_iadd(&b->nb, offset,
+ vtn_access_link_as_ssa(b, chain->link[idx],
+ type->stride));
+
+ type = type->array_element;
+ break;
+
+ case GLSL_TYPE_STRUCT: {
+ assert(chain->link[idx].mode == vtn_access_mode_literal);
+ unsigned member = chain->link[idx].id;
+ offset = nir_iadd(&b->nb, offset,
+ nir_imm_int(&b->nb, type->offsets[member]));
+ type = type->members[member];
+ break;
+ }
+
+ default:
+ unreachable("Invalid type for deref");
+ }
+ }
+
+end:
+ *type_out = type;
+ if (end_idx_out)
+ *end_idx_out = idx;
+
+ return offset;
+}
+
+static void
+_vtn_load_store_tail(struct vtn_builder *b, nir_intrinsic_op op, bool load,
+ nir_ssa_def *index, nir_ssa_def *offset,
+ struct vtn_ssa_value **inout, const struct glsl_type *type)
+{
+ nir_intrinsic_instr *instr = nir_intrinsic_instr_create(b->nb.shader, op);
+ instr->num_components = glsl_get_vector_elements(type);
+
+ int src = 0;
+ if (!load) {
+ instr->const_index[0] = (1 << instr->num_components) - 1; /* write mask */
+ instr->src[src++] = nir_src_for_ssa((*inout)->def);
+ }
+
+ /* We set the base and size for push constant load to the entire push
+ * constant block for now.
+ */
+ if (op == nir_intrinsic_load_push_constant) {
+ instr->const_index[0] = 0;
+ instr->const_index[1] = 128;
+ }
+
+ if (index)
+ instr->src[src++] = nir_src_for_ssa(index);
+
+ instr->src[src++] = nir_src_for_ssa(offset);
+
+ if (load) {
+ nir_ssa_dest_init(&instr->instr, &instr->dest,
+ instr->num_components, NULL);
+ (*inout)->def = &instr->dest.ssa;
+ }
+
+ nir_builder_instr_insert(&b->nb, &instr->instr);
+
+ if (load && glsl_get_base_type(type) == GLSL_TYPE_BOOL)
+ (*inout)->def = nir_ine(&b->nb, (*inout)->def, nir_imm_int(&b->nb, 0));
+}
+
+static void
+_vtn_block_load_store(struct vtn_builder *b, nir_intrinsic_op op, bool load,
+ nir_ssa_def *index, nir_ssa_def *offset,
+ struct vtn_access_chain *chain, unsigned chain_idx,
+ struct vtn_type *type, struct vtn_ssa_value **inout)
+{
+ if (chain && chain_idx >= chain->length)
+ chain = NULL;
+
+ if (load && chain == NULL && *inout == NULL)
+ *inout = vtn_create_ssa_value(b, type->type);
+
+ enum glsl_base_type base_type = glsl_get_base_type(type->type);
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ /* This is where things get interesting. At this point, we've hit
+ * a vector, a scalar, or a matrix.
+ */
+ if (glsl_type_is_matrix(type->type)) {
+ if (chain == NULL) {
+ /* Loading the whole matrix */
+ struct vtn_ssa_value *transpose;
+ unsigned num_ops, vec_width;
+ if (type->row_major) {
+ num_ops = glsl_get_vector_elements(type->type);
+ vec_width = glsl_get_matrix_columns(type->type);
+ if (load) {
+ const struct glsl_type *transpose_type =
+ glsl_matrix_type(base_type, vec_width, num_ops);
+ *inout = vtn_create_ssa_value(b, transpose_type);
+ } else {
+ transpose = vtn_ssa_transpose(b, *inout);
+ inout = &transpose;
+ }
+ } else {
+ num_ops = glsl_get_matrix_columns(type->type);
+ vec_width = glsl_get_vector_elements(type->type);
+ }
+
+ for (unsigned i = 0; i < num_ops; i++) {
+ nir_ssa_def *elem_offset =
+ nir_iadd(&b->nb, offset,
+ nir_imm_int(&b->nb, i * type->stride));
+ _vtn_load_store_tail(b, op, load, index, elem_offset,
+ &(*inout)->elems[i],
+ glsl_vector_type(base_type, vec_width));
+ }
+
+ if (load && type->row_major)
+ *inout = vtn_ssa_transpose(b, *inout);
+ } else if (type->row_major) {
+ /* Row-major but with an access chiain. */
+ nir_ssa_def *col_offset =
+ vtn_access_link_as_ssa(b, chain->link[chain_idx],
+ type->array_element->stride);
+ offset = nir_iadd(&b->nb, offset, col_offset);
+
+ if (chain_idx + 1 < chain->length) {
+ /* Picking off a single element */
+ nir_ssa_def *row_offset =
+ vtn_access_link_as_ssa(b, chain->link[chain_idx + 1],
+ type->stride);
+ offset = nir_iadd(&b->nb, offset, row_offset);
+ if (load)
+ *inout = vtn_create_ssa_value(b, glsl_scalar_type(base_type));
+ _vtn_load_store_tail(b, op, load, index, offset, inout,
+ glsl_scalar_type(base_type));
+ } else {
+ /* Grabbing a column; picking one element off each row */
+ unsigned num_comps = glsl_get_vector_elements(type->type);
+ const struct glsl_type *column_type =
+ glsl_get_column_type(type->type);
+
+ nir_ssa_def *comps[4];
+ for (unsigned i = 0; i < num_comps; i++) {
+ nir_ssa_def *elem_offset =
+ nir_iadd(&b->nb, offset,
+ nir_imm_int(&b->nb, i * type->stride));
+
+ struct vtn_ssa_value *comp, temp_val;
+ if (!load) {
+ temp_val.def = nir_channel(&b->nb, (*inout)->def, i);
+ temp_val.type = glsl_scalar_type(base_type);
+ }
+ comp = &temp_val;
+ _vtn_load_store_tail(b, op, load, index, elem_offset,
+ &comp, glsl_scalar_type(base_type));
+ comps[i] = comp->def;
+ }
+
+ if (load) {
+ if (*inout == NULL)
+ *inout = vtn_create_ssa_value(b, column_type);
+
+ (*inout)->def = nir_vec(&b->nb, comps, num_comps);
+ }
+ }
+ } else {
+ /* Column-major with a deref. Fall through to array case. */
+ nir_ssa_def *col_offset =
+ vtn_access_link_as_ssa(b, chain->link[chain_idx], type->stride);
+ offset = nir_iadd(&b->nb, offset, col_offset);
+
+ _vtn_block_load_store(b, op, load, index, offset,
+ chain, chain_idx + 1,
+ type->array_element, inout);
+ }
+ } else if (chain == NULL) {
+ /* Single whole vector */
+ assert(glsl_type_is_vector_or_scalar(type->type));
+ _vtn_load_store_tail(b, op, load, index, offset, inout, type->type);
+ } else {
+ /* Single component of a vector. Fall through to array case. */
+ nir_ssa_def *elem_offset =
+ vtn_access_link_as_ssa(b, chain->link[chain_idx], type->stride);
+ offset = nir_iadd(&b->nb, offset, elem_offset);
+
+ _vtn_block_load_store(b, op, load, index, offset, NULL, 0,
+ type->array_element, inout);
+ }
+ return;
+
+ case GLSL_TYPE_ARRAY: {
+ unsigned elems = glsl_get_length(type->type);
+ for (unsigned i = 0; i < elems; i++) {
+ nir_ssa_def *elem_off =
+ nir_iadd(&b->nb, offset, nir_imm_int(&b->nb, i * type->stride));
+ _vtn_block_load_store(b, op, load, index, elem_off, NULL, 0,
+ type->array_element, &(*inout)->elems[i]);
+ }
+ return;
+ }
+
+ case GLSL_TYPE_STRUCT: {
+ unsigned elems = glsl_get_length(type->type);
+ for (unsigned i = 0; i < elems; i++) {
+ nir_ssa_def *elem_off =
+ nir_iadd(&b->nb, offset, nir_imm_int(&b->nb, type->offsets[i]));
+ _vtn_block_load_store(b, op, load, index, elem_off, NULL, 0,
+ type->members[i], &(*inout)->elems[i]);
+ }
+ return;
+ }
+
+ default:
+ unreachable("Invalid block member type");
+ }
+}
+
+static struct vtn_ssa_value *
+vtn_block_load(struct vtn_builder *b, struct vtn_access_chain *src)
+{
+ nir_intrinsic_op op;
+ switch (src->var->mode) {
+ case vtn_variable_mode_ubo:
+ op = nir_intrinsic_load_ubo;
+ break;
+ case vtn_variable_mode_ssbo:
+ op = nir_intrinsic_load_ssbo;
+ break;
+ case vtn_variable_mode_push_constant:
+ op = nir_intrinsic_load_push_constant;
+ break;
+ default:
+ assert(!"Invalid block variable mode");
+ }
+
+ nir_ssa_def *offset, *index = NULL;
+ struct vtn_type *type;
+ unsigned chain_idx;
+ offset = vtn_access_chain_to_offset(b, src, &index, &type, &chain_idx, true);
+
+ struct vtn_ssa_value *value = NULL;
+ _vtn_block_load_store(b, op, true, index, offset,
+ src, chain_idx, type, &value);
+ return value;
+}
+
+static void
+vtn_block_store(struct vtn_builder *b, struct vtn_ssa_value *src,
+ struct vtn_access_chain *dst)
+{
+ nir_ssa_def *offset, *index = NULL;
+ struct vtn_type *type;
+ unsigned chain_idx;
+ offset = vtn_access_chain_to_offset(b, dst, &index, &type, &chain_idx, true);
+
+ _vtn_block_load_store(b, nir_intrinsic_store_ssbo, false, index, offset,
+ dst, chain_idx, type, &src);
+}
+
+static bool
+vtn_variable_is_external_block(struct vtn_variable *var)
+{
+ return var->mode == vtn_variable_mode_ssbo ||
+ var->mode == vtn_variable_mode_ubo ||
+ var->mode == vtn_variable_mode_push_constant;
+}
+
+static void
+_vtn_variable_load_store(struct vtn_builder *b, bool load,
+ struct vtn_access_chain *chain,
+ struct vtn_type *tail_type,
+ struct vtn_ssa_value **inout)
+{
+ enum glsl_base_type base_type = glsl_get_base_type(tail_type->type);
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ /* At this point, we have a scalar, vector, or matrix so we know that
+ * there cannot be any structure splitting still in the way. By
+ * stopping at the matrix level rather than the vector level, we
+ * ensure that matrices get loaded in the optimal way even if they
+ * are storred row-major in a UBO.
+ */
+ if (load) {
+ *inout = vtn_local_load(b, vtn_access_chain_to_deref(b, chain));
+ } else {
+ vtn_local_store(b, *inout, vtn_access_chain_to_deref(b, chain));
+ }
+ return;
+
+ case GLSL_TYPE_ARRAY:
+ case GLSL_TYPE_STRUCT: {
+ struct vtn_access_chain *new_chain =
+ vtn_access_chain_extend(b, chain, 1);
+ new_chain->link[chain->length].mode = vtn_access_mode_literal;
+ unsigned elems = glsl_get_length(tail_type->type);
+ if (load) {
+ assert(*inout == NULL);
+ *inout = rzalloc(b, struct vtn_ssa_value);
+ (*inout)->type = tail_type->type;
+ (*inout)->elems = rzalloc_array(b, struct vtn_ssa_value *, elems);
+ }
+ for (unsigned i = 0; i < elems; i++) {
+ new_chain->link[chain->length].id = i;
+ struct vtn_type *elem_type = base_type == GLSL_TYPE_ARRAY ?
+ tail_type->array_element : tail_type->members[i];
+ _vtn_variable_load_store(b, load, new_chain, elem_type,
+ &(*inout)->elems[i]);
+ }
+ return;
+ }
+
+ default:
+ unreachable("Invalid access chain type");
+ }
+}
+
+struct vtn_ssa_value *
+vtn_variable_load(struct vtn_builder *b, struct vtn_access_chain *src)
+{
+ if (vtn_variable_is_external_block(src->var)) {
+ return vtn_block_load(b, src);
+ } else {
+ struct vtn_type *tail_type = vtn_access_chain_tail_type(b, src);
+ struct vtn_ssa_value *val = NULL;
+ _vtn_variable_load_store(b, true, src, tail_type, &val);
+ return val;
+ }
+}
+
+void
+vtn_variable_store(struct vtn_builder *b, struct vtn_ssa_value *src,
+ struct vtn_access_chain *dest)
+{
+ if (vtn_variable_is_external_block(dest->var)) {
+ assert(dest->var->mode == vtn_variable_mode_ssbo);
+ vtn_block_store(b, src, dest);
+ } else {
+ struct vtn_type *tail_type = vtn_access_chain_tail_type(b, dest);
+ _vtn_variable_load_store(b, false, dest, tail_type, &src);
+ }
+}
+
+static void
+_vtn_variable_copy(struct vtn_builder *b, struct vtn_access_chain *dest,
+ struct vtn_access_chain *src, struct vtn_type *tail_type)
+{
+ enum glsl_base_type base_type = glsl_get_base_type(tail_type->type);
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ /* At this point, we have a scalar, vector, or matrix so we know that
+ * there cannot be any structure splitting still in the way. By
+ * stopping at the matrix level rather than the vector level, we
+ * ensure that matrices get loaded in the optimal way even if they
+ * are storred row-major in a UBO.
+ */
+ vtn_variable_store(b, vtn_variable_load(b, src), dest);
+ return;
+
+ case GLSL_TYPE_ARRAY:
+ case GLSL_TYPE_STRUCT: {
+ struct vtn_access_chain *new_src, *new_dest;
+ new_src = vtn_access_chain_extend(b, src, 1);
+ new_dest = vtn_access_chain_extend(b, dest, 1);
+ new_src->link[src->length].mode = vtn_access_mode_literal;
+ new_dest->link[dest->length].mode = vtn_access_mode_literal;
+ unsigned elems = glsl_get_length(tail_type->type);
+ for (unsigned i = 0; i < elems; i++) {
+ new_src->link[src->length].id = i;
+ new_dest->link[dest->length].id = i;
+ struct vtn_type *elem_type = base_type == GLSL_TYPE_ARRAY ?
+ tail_type->array_element : tail_type->members[i];
+ _vtn_variable_copy(b, new_dest, new_src, elem_type);
+ }
+ return;
+ }
+
+ default:
+ unreachable("Invalid access chain type");
+ }
+}
+
+static void
+vtn_variable_copy(struct vtn_builder *b, struct vtn_access_chain *dest,
+ struct vtn_access_chain *src)
+{
+ struct vtn_type *tail_type = vtn_access_chain_tail_type(b, src);
+ assert(vtn_access_chain_tail_type(b, dest)->type == tail_type->type);
+
+ /* TODO: At some point, we should add a special-case for when we can
+ * just emit a copy_var intrinsic.
+ */
+ _vtn_variable_copy(b, dest, src, tail_type);
+}
+
+static void
+set_mode_system_value(nir_variable_mode *mode)
+{
+ assert(*mode == nir_var_system_value || *mode == nir_var_shader_in);
+ *mode = nir_var_system_value;
+}
+
+static void
+vtn_get_builtin_location(struct vtn_builder *b,
+ SpvBuiltIn builtin, int *location,
+ nir_variable_mode *mode)
+{
+ switch (builtin) {
+ case SpvBuiltInPosition:
+ *location = VARYING_SLOT_POS;
+ break;
+ case SpvBuiltInPointSize:
+ *location = VARYING_SLOT_PSIZ;
+ break;
+ case SpvBuiltInClipDistance:
+ *location = VARYING_SLOT_CLIP_DIST0; /* XXX CLIP_DIST1? */
+ break;
+ case SpvBuiltInCullDistance:
+ /* XXX figure this out */
+ break;
+ case SpvBuiltInVertexIndex:
+ *location = SYSTEM_VALUE_VERTEX_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInVertexId:
+ /* Vulkan defines VertexID to be zero-based and reserves the new
+ * builtin keyword VertexIndex to indicate the non-zero-based value.
+ */
+ *location = SYSTEM_VALUE_VERTEX_ID_ZERO_BASE;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInInstanceIndex:
+ *location = SYSTEM_VALUE_INSTANCE_INDEX;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInInstanceId:
+ *location = SYSTEM_VALUE_INSTANCE_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInPrimitiveId:
+ *location = VARYING_SLOT_PRIMITIVE_ID;
+ *mode = nir_var_shader_out;
+ break;
+ case SpvBuiltInInvocationId:
+ *location = SYSTEM_VALUE_INVOCATION_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInLayer:
+ *location = VARYING_SLOT_LAYER;
+ *mode = nir_var_shader_out;
+ break;
+ case SpvBuiltInViewportIndex:
+ *location = VARYING_SLOT_VIEWPORT;
+ if (b->shader->stage == MESA_SHADER_GEOMETRY)
+ *mode = nir_var_shader_out;
+ else if (b->shader->stage == MESA_SHADER_FRAGMENT)
+ *mode = nir_var_shader_in;
+ else
+ unreachable("invalid stage for SpvBuiltInViewportIndex");
+ break;
+ case SpvBuiltInTessLevelOuter:
+ case SpvBuiltInTessLevelInner:
+ case SpvBuiltInTessCoord:
+ case SpvBuiltInPatchVertices:
+ unreachable("no tessellation support");
+ case SpvBuiltInFragCoord:
+ *location = VARYING_SLOT_POS;
+ assert(*mode == nir_var_shader_in);
+ break;
+ case SpvBuiltInPointCoord:
+ *location = VARYING_SLOT_PNTC;
+ assert(*mode == nir_var_shader_in);
+ break;
+ case SpvBuiltInFrontFacing:
+ *location = VARYING_SLOT_FACE;
+ assert(*mode == nir_var_shader_in);
+ break;
+ case SpvBuiltInSampleId:
+ *location = SYSTEM_VALUE_SAMPLE_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInSamplePosition:
+ *location = SYSTEM_VALUE_SAMPLE_POS;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInSampleMask:
+ *location = SYSTEM_VALUE_SAMPLE_MASK_IN; /* XXX out? */
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInFragDepth:
+ *location = FRAG_RESULT_DEPTH;
+ assert(*mode == nir_var_shader_out);
+ break;
+ case SpvBuiltInNumWorkgroups:
+ *location = SYSTEM_VALUE_NUM_WORK_GROUPS;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInWorkgroupSize:
+ /* This should already be handled */
+ unreachable("unsupported builtin");
+ break;
+ case SpvBuiltInWorkgroupId:
+ *location = SYSTEM_VALUE_WORK_GROUP_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInLocalInvocationId:
+ *location = SYSTEM_VALUE_LOCAL_INVOCATION_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInLocalInvocationIndex:
+ *location = SYSTEM_VALUE_LOCAL_INVOCATION_INDEX;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInGlobalInvocationId:
+ *location = SYSTEM_VALUE_GLOBAL_INVOCATION_ID;
+ set_mode_system_value(mode);
+ break;
+ case SpvBuiltInHelperInvocation:
+ default:
+ unreachable("unsupported builtin");
+ }
+}
+
+static void
+var_decoration_cb(struct vtn_builder *b, struct vtn_value *val, int member,
+ const struct vtn_decoration *dec, void *void_var)
+{
+ struct vtn_variable *vtn_var = void_var;
+
+ /* Handle decorations that apply to a vtn_variable as a whole */
+ switch (dec->decoration) {
+ case SpvDecorationBinding:
+ vtn_var->binding = dec->literals[0];
+ return;
+ case SpvDecorationDescriptorSet:
+ vtn_var->descriptor_set = dec->literals[0];
+ return;
+
+ case SpvDecorationLocation: {
+ unsigned location = dec->literals[0];
+ bool is_vertex_input;
+ if (b->shader->stage == MESA_SHADER_FRAGMENT &&
+ vtn_var->mode == vtn_variable_mode_output) {
+ is_vertex_input = false;
+ location += FRAG_RESULT_DATA0;
+ } else if (b->shader->stage == MESA_SHADER_VERTEX &&
+ vtn_var->mode == vtn_variable_mode_input) {
+ is_vertex_input = true;
+ location += VERT_ATTRIB_GENERIC0;
+ } else if (vtn_var->mode == vtn_variable_mode_input ||
+ vtn_var->mode == vtn_variable_mode_output) {
+ is_vertex_input = false;
+ location += VARYING_SLOT_VAR0;
+ } else {
+ assert(!"Location must be on input or output variable");
+ }
+
+ if (vtn_var->var) {
+ vtn_var->var->data.location = location;
+ vtn_var->var->data.explicit_location = true;
+ } else {
+ assert(vtn_var->members);
+ unsigned length = glsl_get_length(vtn_var->type->type);
+ for (unsigned i = 0; i < length; i++) {
+ vtn_var->members[i]->data.location = location;
+ vtn_var->members[i]->data.explicit_location = true;
+ location +=
+ glsl_count_attribute_slots(vtn_var->members[i]->interface_type,
+ is_vertex_input);
+ }
+ }
+ return;
+ }
+
+ default:
+ break;
+ }
+
+ /* Now we handle decorations that apply to a particular nir_variable */
+ nir_variable *nir_var = vtn_var->var;
+ if (val->value_type == vtn_value_type_access_chain) {
+ assert(val->access_chain->length == 0);
+ assert(val->access_chain->var == void_var);
+ assert(member == -1);
+ } else {
+ assert(val->value_type == vtn_value_type_type);
+ if (member != -1)
+ nir_var = vtn_var->members[member];
+ }
+
+ if (nir_var == NULL)
+ return;
+
+ switch (dec->decoration) {
+ case SpvDecorationRelaxedPrecision:
+ break; /* FIXME: Do nothing with this for now. */
+ case SpvDecorationNoPerspective:
+ nir_var->data.interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
+ break;
+ case SpvDecorationFlat:
+ nir_var->data.interpolation = INTERP_QUALIFIER_FLAT;
+ break;
+ case SpvDecorationCentroid:
+ nir_var->data.centroid = true;
+ break;
+ case SpvDecorationSample:
+ nir_var->data.sample = true;
+ break;
+ case SpvDecorationInvariant:
+ nir_var->data.invariant = true;
+ break;
+ case SpvDecorationConstant:
+ assert(nir_var->constant_initializer != NULL);
+ nir_var->data.read_only = true;
+ break;
+ case SpvDecorationNonWritable:
+ nir_var->data.read_only = true;
+ break;
+ case SpvDecorationComponent:
+ nir_var->data.location_frac = dec->literals[0];
+ break;
+ case SpvDecorationIndex:
+ nir_var->data.explicit_index = true;
+ nir_var->data.index = dec->literals[0];
+ break;
+ case SpvDecorationBuiltIn: {
+ SpvBuiltIn builtin = dec->literals[0];
+
+ if (builtin == SpvBuiltInWorkgroupSize) {
+ /* This shouldn't be a builtin. It's actually a constant. */
+ nir_var->data.mode = nir_var_global;
+ nir_var->data.read_only = true;
+
+ nir_constant *c = rzalloc(nir_var, nir_constant);
+ c->value.u[0] = b->shader->info.cs.local_size[0];
+ c->value.u[1] = b->shader->info.cs.local_size[1];
+ c->value.u[2] = b->shader->info.cs.local_size[2];
+ nir_var->constant_initializer = c;
+ break;
+ }
+
+ nir_variable_mode mode = nir_var->data.mode;
+ vtn_get_builtin_location(b, builtin, &nir_var->data.location, &mode);
+ nir_var->data.explicit_location = true;
+ nir_var->data.mode = mode;
+
+ if (builtin == SpvBuiltInFragCoord || builtin == SpvBuiltInSamplePosition)
+ nir_var->data.origin_upper_left = b->origin_upper_left;
+ break;
+ }
+ case SpvDecorationRowMajor:
+ case SpvDecorationColMajor:
+ case SpvDecorationGLSLShared:
+ case SpvDecorationPatch:
+ case SpvDecorationRestrict:
+ case SpvDecorationAliased:
+ case SpvDecorationVolatile:
+ case SpvDecorationCoherent:
+ case SpvDecorationNonReadable:
+ case SpvDecorationUniform:
+ /* This is really nice but we have no use for it right now. */
+ case SpvDecorationCPacked:
+ case SpvDecorationSaturatedConversion:
+ case SpvDecorationStream:
+ case SpvDecorationOffset:
+ case SpvDecorationXfbBuffer:
+ case SpvDecorationFuncParamAttr:
+ case SpvDecorationFPRoundingMode:
+ case SpvDecorationFPFastMathMode:
+ case SpvDecorationLinkageAttributes:
+ case SpvDecorationSpecId:
+ break;
+ default:
+ unreachable("Unhandled variable decoration");
+ }
+}
+
+/* Tries to compute the size of an interface block based on the strides and
+ * offsets that are provided to us in the SPIR-V source.
+ */
+static unsigned
+vtn_type_block_size(struct vtn_type *type)
+{
+ enum glsl_base_type base_type = glsl_get_base_type(type->type);
+ switch (base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ case GLSL_TYPE_DOUBLE: {
+ unsigned cols = type->row_major ? glsl_get_vector_elements(type->type) :
+ glsl_get_matrix_columns(type->type);
+ if (cols > 1) {
+ assert(type->stride > 0);
+ return type->stride * cols;
+ } else if (base_type == GLSL_TYPE_DOUBLE) {
+ return glsl_get_vector_elements(type->type) * 8;
+ } else {
+ return glsl_get_vector_elements(type->type) * 4;
+ }
+ }
+
+ case GLSL_TYPE_STRUCT:
+ case GLSL_TYPE_INTERFACE: {
+ unsigned size = 0;
+ unsigned num_fields = glsl_get_length(type->type);
+ for (unsigned f = 0; f < num_fields; f++) {
+ unsigned field_end = type->offsets[f] +
+ vtn_type_block_size(type->members[f]);
+ size = MAX2(size, field_end);
+ }
+ return size;
+ }
+
+ case GLSL_TYPE_ARRAY:
+ assert(type->stride > 0);
+ assert(glsl_get_length(type->type) > 0);
+ return type->stride * glsl_get_length(type->type);
+
+ default:
+ assert(!"Invalid block type");
+ return 0;
+ }
+}
+
+void
+vtn_handle_variables(struct vtn_builder *b, SpvOp opcode,
+ const uint32_t *w, unsigned count)
+{
+ switch (opcode) {
+ case SpvOpVariable: {
+ struct vtn_variable *var = rzalloc(b, struct vtn_variable);
+ var->type = vtn_value(b, w[1], vtn_value_type_type)->type;
+
+ var->chain.var = var;
+ var->chain.length = 0;
+
+ struct vtn_value *val =
+ vtn_push_value(b, w[2], vtn_value_type_access_chain);
+ val->access_chain = &var->chain;
+
+ struct vtn_type *without_array = var->type;
+ while(glsl_type_is_array(without_array->type))
+ without_array = without_array->array_element;
+
+ nir_variable_mode nir_mode;
+ switch ((SpvStorageClass)w[3]) {
+ case SpvStorageClassUniform:
+ case SpvStorageClassUniformConstant:
+ if (without_array->block) {
+ var->mode = vtn_variable_mode_ubo;
+ b->shader->info.num_ubos++;
+ } else if (without_array->buffer_block) {
+ var->mode = vtn_variable_mode_ssbo;
+ b->shader->info.num_ssbos++;
+ } else if (glsl_type_is_image(without_array->type)) {
+ var->mode = vtn_variable_mode_image;
+ nir_mode = nir_var_uniform;
+ b->shader->info.num_images++;
+ } else if (glsl_type_is_sampler(without_array->type)) {
+ var->mode = vtn_variable_mode_sampler;
+ nir_mode = nir_var_uniform;
+ b->shader->info.num_textures++;
+ } else {
+ assert(!"Invalid uniform variable type");
+ }
+ break;
+ case SpvStorageClassPushConstant:
+ var->mode = vtn_variable_mode_push_constant;
+ assert(b->shader->num_uniforms == 0);
+ b->shader->num_uniforms = vtn_type_block_size(var->type) * 4;
+ break;
+ case SpvStorageClassInput:
+ var->mode = vtn_variable_mode_input;
+ nir_mode = nir_var_shader_in;
+ break;
+ case SpvStorageClassOutput:
+ var->mode = vtn_variable_mode_output;
+ nir_mode = nir_var_shader_out;
+ break;
+ case SpvStorageClassPrivate:
+ var->mode = vtn_variable_mode_global;
+ nir_mode = nir_var_global;
+ break;
+ case SpvStorageClassFunction:
+ var->mode = vtn_variable_mode_local;
+ nir_mode = nir_var_local;
+ break;
+ case SpvStorageClassWorkgroup:
+ var->mode = vtn_variable_mode_workgroup;
+ nir_mode = nir_var_shared;
+ break;
+ case SpvStorageClassCrossWorkgroup:
+ case SpvStorageClassGeneric:
+ case SpvStorageClassAtomicCounter:
+ default:
+ unreachable("Unhandled variable storage class");
+ }
+
+ switch (var->mode) {
+ case vtn_variable_mode_local:
+ case vtn_variable_mode_global:
+ case vtn_variable_mode_image:
+ case vtn_variable_mode_sampler:
+ case vtn_variable_mode_workgroup:
+ /* For these, we create the variable normally */
+ var->var = rzalloc(b->shader, nir_variable);
+ var->var->name = ralloc_strdup(var->var, val->name);
+ var->var->type = var->type->type;
+ var->var->data.mode = nir_mode;
+
+ switch (var->mode) {
+ case vtn_variable_mode_image:
+ case vtn_variable_mode_sampler:
+ var->var->interface_type = without_array->type;
+ break;
+ default:
+ var->var->interface_type = NULL;
+ break;
+ }
+ break;
+
+ case vtn_variable_mode_input:
+ case vtn_variable_mode_output: {
+ /* For inputs and outputs, we immediately split structures. This
+ * is for a couple of reasons. For one, builtins may all come in
+ * a struct and we really want those split out into separate
+ * variables. For another, interpolation qualifiers can be
+ * applied to members of the top-level struct ane we need to be
+ * able to preserve that information.
+ */
+
+ int array_length = -1;
+ struct vtn_type *interface_type = var->type;
+ if (b->shader->stage == MESA_SHADER_GEOMETRY &&
+ glsl_type_is_array(var->type->type)) {
+ /* In Geometry shaders (and some tessellation), inputs come
+ * in per-vertex arrays. However, some builtins come in
+ * non-per-vertex, hence the need for the is_array check. In
+ * any case, there are no non-builtin arrays allowed so this
+ * check should be sufficient.
+ */
+ interface_type = var->type->array_element;
+ array_length = glsl_get_length(var->type->type);
+ }
+
+ if (glsl_type_is_struct(interface_type->type)) {
+ /* It's a struct. Split it. */
+ unsigned num_members = glsl_get_length(interface_type->type);
+ var->members = ralloc_array(b, nir_variable *, num_members);
+
+ for (unsigned i = 0; i < num_members; i++) {
+ const struct glsl_type *mtype = interface_type->members[i]->type;
+ if (array_length >= 0)
+ mtype = glsl_array_type(mtype, array_length);
+
+ var->members[i] = rzalloc(b->shader, nir_variable);
+ var->members[i]->name =
+ ralloc_asprintf(var->members[i], "%s.%d", val->name, i);
+ var->members[i]->type = mtype;
+ var->members[i]->interface_type =
+ interface_type->members[i]->type;
+ var->members[i]->data.mode = nir_mode;
+ }
+ } else {
+ var->var = rzalloc(b->shader, nir_variable);
+ var->var->name = ralloc_strdup(var->var, val->name);
+ var->var->type = var->type->type;
+ var->var->interface_type = interface_type->type;
+ var->var->data.mode = nir_mode;
+ }
+
+ /* For inputs and outputs, we need to grab locations and builtin
+ * information from the interface type.
+ */
+ vtn_foreach_decoration(b, interface_type->val, var_decoration_cb, var);
+ break;
+
+ case vtn_variable_mode_param:
+ unreachable("Not created through OpVariable");
+ }
+
+ case vtn_variable_mode_ubo:
+ case vtn_variable_mode_ssbo:
+ case vtn_variable_mode_push_constant:
+ /* These don't need actual variables. */
+ break;
+ }
+
+ if (count > 4) {
+ assert(count == 5);
+ nir_constant *constant =
+ vtn_value(b, w[4], vtn_value_type_constant)->constant;
+ var->var->constant_initializer =
+ nir_constant_clone(constant, var->var);
+ }
+
+ vtn_foreach_decoration(b, val, var_decoration_cb, var);
+
+ if (var->mode == vtn_variable_mode_image ||
+ var->mode == vtn_variable_mode_sampler) {
+ /* XXX: We still need the binding information in the nir_variable
+ * for these. We should fix that.
+ */
+ var->var->data.binding = var->binding;
+ var->var->data.descriptor_set = var->descriptor_set;
+
+ if (var->mode == vtn_variable_mode_image)
+ var->var->data.image.format = without_array->image_format;
+ }
+
+ if (var->mode == vtn_variable_mode_local) {
+ assert(var->members == NULL && var->var != NULL);
+ nir_function_impl_add_variable(b->impl, var->var);
+ } else if (var->var) {
+ nir_shader_add_variable(b->shader, var->var);
+ } else if (var->members) {
+ unsigned count = glsl_get_length(without_array->type);
+ for (unsigned i = 0; i < count; i++) {
+ assert(var->members[i]->data.mode != nir_var_local);
+ nir_shader_add_variable(b->shader, var->members[i]);
+ }
+ } else {
+ assert(var->mode == vtn_variable_mode_ubo ||
+ var->mode == vtn_variable_mode_ssbo ||
+ var->mode == vtn_variable_mode_push_constant);
+ }
+ break;
+ }
+
+ case SpvOpAccessChain:
+ case SpvOpInBoundsAccessChain: {
+ struct vtn_access_chain *base, *chain;
+ struct vtn_value *base_val = vtn_untyped_value(b, w[3]);
+ if (base_val->value_type == vtn_value_type_sampled_image) {
+ /* This is rather insane. SPIR-V allows you to use OpSampledImage
+ * to combine an array of images with a single sampler to get an
+ * array of sampled images that all share the same sampler.
+ * Fortunately, this means that we can more-or-less ignore the
+ * sampler when crawling the access chain, but it does leave us
+ * with this rather awkward little special-case.
+ */
+ base = base_val->sampled_image->image;
+ } else {
+ assert(base_val->value_type == vtn_value_type_access_chain);
+ base = base_val->access_chain;
+ }
+
+ chain = vtn_access_chain_extend(b, base, count - 4);
+
+ unsigned idx = base->length;
+ for (int i = 4; i < count; i++) {
+ struct vtn_value *link_val = vtn_untyped_value(b, w[i]);
+ if (link_val->value_type == vtn_value_type_constant) {
+ chain->link[idx].mode = vtn_access_mode_literal;
+ chain->link[idx].id = link_val->constant->value.u[0];
+ } else {
+ chain->link[idx].mode = vtn_access_mode_id;
+ chain->link[idx].id = w[i];
+ }
+ idx++;
+ }
+
+ if (base_val->value_type == vtn_value_type_sampled_image) {
+ struct vtn_value *val =
+ vtn_push_value(b, w[2], vtn_value_type_sampled_image);
+ val->sampled_image = ralloc(b, struct vtn_sampled_image);
+ val->sampled_image->image = chain;
+ val->sampled_image->sampler = base_val->sampled_image->sampler;
+ } else {
+ struct vtn_value *val =
+ vtn_push_value(b, w[2], vtn_value_type_access_chain);
+ val->access_chain = chain;
+ }
+ break;
+ }
+
+ case SpvOpCopyMemory: {
+ struct vtn_value *dest = vtn_value(b, w[1], vtn_value_type_access_chain);
+ struct vtn_value *src = vtn_value(b, w[2], vtn_value_type_access_chain);
+
+ vtn_variable_copy(b, dest->access_chain, src->access_chain);
+ break;
+ }
+
+ case SpvOpLoad: {
+ struct vtn_access_chain *src =
+ vtn_value(b, w[3], vtn_value_type_access_chain)->access_chain;
+
+ if (src->var->mode == vtn_variable_mode_image ||
+ src->var->mode == vtn_variable_mode_sampler) {
+ vtn_push_value(b, w[2], vtn_value_type_access_chain)->access_chain = src;
+ return;
+ }
+
+ struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_ssa);
+ val->ssa = vtn_variable_load(b, src);
+ break;
+ }
+
+ case SpvOpStore: {
+ struct vtn_access_chain *dest =
+ vtn_value(b, w[1], vtn_value_type_access_chain)->access_chain;
+ struct vtn_ssa_value *src = vtn_ssa_value(b, w[2]);
+ vtn_variable_store(b, src, dest);
+ break;
+ }
+
+ case SpvOpArrayLength: {
+ struct vtn_access_chain *chain =
+ vtn_value(b, w[3], vtn_value_type_access_chain)->access_chain;
+
+ const uint32_t offset = chain->var->type->offsets[w[4]];
+ const uint32_t stride = chain->var->type->members[w[4]]->stride;
+
+ unsigned chain_idx;
+ struct vtn_type *type;
+ nir_ssa_def *index =
+ get_vulkan_resource_index(b, chain, &type, &chain_idx);
+
+ nir_intrinsic_instr *instr =
+ nir_intrinsic_instr_create(b->nb.shader,
+ nir_intrinsic_get_buffer_size);
+ instr->src[0] = nir_src_for_ssa(index);
+ nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL);
+ nir_builder_instr_insert(&b->nb, &instr->instr);
+ nir_ssa_def *buf_size = &instr->dest.ssa;
+
+ /* array_length = max(buffer_size - offset, 0) / stride */
+ nir_ssa_def *array_length =
+ nir_idiv(&b->nb,
+ nir_imax(&b->nb,
+ nir_isub(&b->nb,
+ buf_size,
+ nir_imm_int(&b->nb, offset)),
+ nir_imm_int(&b->nb, 0u)),
+ nir_imm_int(&b->nb, stride));
+
+ struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_ssa);
+ val->ssa = vtn_create_ssa_value(b, glsl_uint_type());
+ val->ssa->def = array_length;
+ break;
+ }
+
+ case SpvOpCopyMemorySized:
+ default:
+ unreachable("Unhandled opcode");
+ }
+}
projects / mesa.git / commitdiff