#include "vtn_private.h"
#include "spirv_info.h"
+#include "nir_deref.h"
+#include <vulkan/vulkan_core.h>
static struct vtn_access_chain *
-vtn_access_chain_extend(struct vtn_builder *b, struct vtn_access_chain *old,
- unsigned new_ids)
+vtn_access_chain_create(struct vtn_builder *b, unsigned length)
{
struct vtn_access_chain *chain;
- unsigned new_len = old->length + new_ids;
- chain = ralloc_size(b, sizeof(*chain) + new_len * sizeof(chain->link[0]));
+ /* Subtract 1 from the length since there's already one built in */
+ size_t size = sizeof(*chain) +
+ (MAX2(length, 1) - 1) * sizeof(chain->link[0]);
+ chain = rzalloc_size(b, size);
+ chain->length = length;
- chain->var = old->var;
- chain->length = new_len;
+ return chain;
+}
- for (unsigned i = 0; i < old->length; i++)
- chain->link[i] = old->link[i];
+bool
+vtn_pointer_uses_ssa_offset(struct vtn_builder *b,
+ struct vtn_pointer *ptr)
+{
+ return ((ptr->mode == vtn_variable_mode_ubo ||
+ ptr->mode == vtn_variable_mode_ssbo) &&
+ b->options->lower_ubo_ssbo_access_to_offsets) ||
+ ptr->mode == vtn_variable_mode_push_constant ||
+ (ptr->mode == vtn_variable_mode_workgroup &&
+ b->options->lower_workgroup_access_to_offsets);
+}
- return chain;
+static bool
+vtn_pointer_is_external_block(struct vtn_builder *b,
+ struct vtn_pointer *ptr)
+{
+ return ptr->mode == vtn_variable_mode_ssbo ||
+ ptr->mode == vtn_variable_mode_ubo ||
+ ptr->mode == vtn_variable_mode_push_constant ||
+ (ptr->mode == vtn_variable_mode_workgroup &&
+ b->options->lower_workgroup_access_to_offsets);
}
static nir_ssa_def *
vtn_access_link_as_ssa(struct vtn_builder *b, struct vtn_access_link link,
- unsigned stride)
+ unsigned stride, unsigned bit_size)
{
- assert(stride > 0);
+ vtn_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;
+ return nir_imm_intN_t(&b->nb, link.id * stride, bit_size);
} else {
- return nir_imul(&b->nb, vtn_ssa_value(b, link.id)->def,
- nir_imm_int(&b->nb, stride));
+ nir_ssa_def *ssa = vtn_ssa_value(b, link.id)->def;
+ if (ssa->bit_size != bit_size)
+ ssa = nir_i2i(&b->nb, ssa, bit_size);
+ if (stride != 1)
+ ssa = nir_imul_imm(&b->nb, ssa, stride);
+ return ssa;
+ }
+}
+
+static VkDescriptorType
+vk_desc_type_for_mode(struct vtn_builder *b, enum vtn_variable_mode mode)
+{
+ switch (mode) {
+ case vtn_variable_mode_ubo:
+ return VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
+ case vtn_variable_mode_ssbo:
+ return VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
+ default:
+ vtn_fail("Invalid mode for vulkan_resource_index");
+ }
+}
+
+static nir_ssa_def *
+vtn_variable_resource_index(struct vtn_builder *b, struct vtn_variable *var,
+ nir_ssa_def *desc_array_index)
+{
+ if (!desc_array_index) {
+ vtn_assert(glsl_type_is_struct(var->type->type));
+ desc_array_index = nir_imm_int(&b->nb, 0);
}
+
+ nir_intrinsic_instr *instr =
+ nir_intrinsic_instr_create(b->nb.shader,
+ nir_intrinsic_vulkan_resource_index);
+ instr->src[0] = nir_src_for_ssa(desc_array_index);
+ nir_intrinsic_set_desc_set(instr, var->descriptor_set);
+ nir_intrinsic_set_binding(instr, var->binding);
+ nir_intrinsic_set_desc_type(instr, vk_desc_type_for_mode(b, var->mode));
+
+ nir_ssa_dest_init(&instr->instr, &instr->dest, 1, 32, NULL);
+ nir_builder_instr_insert(&b->nb, &instr->instr);
+
+ return &instr->dest.ssa;
+}
+
+static nir_ssa_def *
+vtn_resource_reindex(struct vtn_builder *b, enum vtn_variable_mode mode,
+ nir_ssa_def *base_index, nir_ssa_def *offset_index)
+{
+ nir_intrinsic_instr *instr =
+ nir_intrinsic_instr_create(b->nb.shader,
+ nir_intrinsic_vulkan_resource_reindex);
+ instr->src[0] = nir_src_for_ssa(base_index);
+ instr->src[1] = nir_src_for_ssa(offset_index);
+ nir_intrinsic_set_desc_type(instr, vk_desc_type_for_mode(b, mode));
+
+ nir_ssa_dest_init(&instr->instr, &instr->dest, 1, 32, NULL);
+ nir_builder_instr_insert(&b->nb, &instr->instr);
+
+ return &instr->dest.ssa;
+}
+
+static nir_ssa_def *
+vtn_descriptor_load(struct vtn_builder *b, enum vtn_variable_mode mode,
+ const struct glsl_type *desc_type, nir_ssa_def *desc_index)
+{
+ nir_intrinsic_instr *desc_load =
+ nir_intrinsic_instr_create(b->nb.shader,
+ nir_intrinsic_load_vulkan_descriptor);
+ desc_load->src[0] = nir_src_for_ssa(desc_index);
+ desc_load->num_components = glsl_get_vector_elements(desc_type);
+ nir_intrinsic_set_desc_type(desc_load, vk_desc_type_for_mode(b, mode));
+ nir_ssa_dest_init(&desc_load->instr, &desc_load->dest,
+ desc_load->num_components,
+ glsl_get_bit_size(desc_type), NULL);
+ nir_builder_instr_insert(&b->nb, &desc_load->instr);
+
+ return &desc_load->dest.ssa;
}
-static struct vtn_type *
-vtn_access_chain_tail_type(struct vtn_builder *b,
- struct vtn_access_chain *chain)
+/* Dereference the given base pointer by the access chain */
+static struct vtn_pointer *
+vtn_nir_deref_pointer_dereference(struct vtn_builder *b,
+ struct vtn_pointer *base,
+ struct vtn_access_chain *deref_chain)
{
- struct vtn_type *type = chain->var->type;
- for (unsigned i = 0; i < chain->length; i++) {
+ struct vtn_type *type = base->type;
+ enum gl_access_qualifier access = base->access;
+ unsigned idx = 0;
+
+ nir_deref_instr *tail;
+ if (base->deref) {
+ tail = base->deref;
+ } else if (vtn_pointer_is_external_block(b, base)) {
+ nir_ssa_def *block_index = base->block_index;
+
+ /* We dereferencing an external block pointer. Correctness of this
+ * operation relies on one particular line in the SPIR-V spec, section
+ * entitled "Validation Rules for Shader Capabilities":
+ *
+ * "Block and BufferBlock decorations cannot decorate a structure
+ * type that is nested at any level inside another structure type
+ * decorated with Block or BufferBlock."
+ *
+ * This means that we can detect the point where we cross over from
+ * descriptor indexing to buffer indexing by looking for the block
+ * decorated struct type. Anything before the block decorated struct
+ * type is a descriptor indexing operation and anything after the block
+ * decorated struct is a buffer offset operation.
+ */
+
+ /* Figure out the descriptor array index if any
+ *
+ * Some of the Vulkan CTS tests with hand-rolled SPIR-V have been known
+ * to forget the Block or BufferBlock decoration from time to time.
+ * It's more robust if we check for both !block_index and for the type
+ * to contain a block. This way there's a decent chance that arrays of
+ * UBOs/SSBOs will work correctly even if variable pointers are
+ * completley toast.
+ */
+ nir_ssa_def *desc_arr_idx = NULL;
+ if (!block_index || vtn_type_contains_block(b, type)) {
+ /* If our type contains a block, then we're still outside the block
+ * and we need to process enough levels of dereferences to get inside
+ * of it.
+ */
+ if (deref_chain->ptr_as_array) {
+ unsigned aoa_size = glsl_get_aoa_size(type->type);
+ desc_arr_idx = vtn_access_link_as_ssa(b, deref_chain->link[idx],
+ MAX2(aoa_size, 1), 32);
+ idx++;
+ }
+
+ for (; idx < deref_chain->length; idx++) {
+ if (type->base_type != vtn_base_type_array) {
+ vtn_assert(type->base_type == vtn_base_type_struct);
+ break;
+ }
+
+ unsigned aoa_size = glsl_get_aoa_size(type->array_element->type);
+ nir_ssa_def *arr_offset =
+ vtn_access_link_as_ssa(b, deref_chain->link[idx],
+ MAX2(aoa_size, 1), 32);
+ if (desc_arr_idx)
+ desc_arr_idx = nir_iadd(&b->nb, desc_arr_idx, arr_offset);
+ else
+ desc_arr_idx = arr_offset;
+
+ type = type->array_element;
+ access |= type->access;
+ }
+ }
+
+ if (!block_index) {
+ vtn_assert(base->var && base->type);
+ block_index = vtn_variable_resource_index(b, base->var, desc_arr_idx);
+ } else if (desc_arr_idx) {
+ block_index = vtn_resource_reindex(b, base->mode,
+ block_index, desc_arr_idx);
+ }
+
+ if (idx == deref_chain->length) {
+ /* The entire deref was consumed in finding the block index. Return
+ * a pointer which just has a block index and a later access chain
+ * will dereference deeper.
+ */
+ struct vtn_pointer *ptr = rzalloc(b, struct vtn_pointer);
+ ptr->mode = base->mode;
+ ptr->type = type;
+ ptr->block_index = block_index;
+ ptr->access = access;
+ return ptr;
+ }
+
+ /* If we got here, there's more access chain to handle and we have the
+ * final block index. Insert a descriptor load and cast to a deref to
+ * start the deref chain.
+ */
+ nir_ssa_def *desc =
+ vtn_descriptor_load(b, base->mode, base->ptr_type->type, block_index);
+
+ assert(base->mode == vtn_variable_mode_ssbo ||
+ base->mode == vtn_variable_mode_ubo);
+ nir_variable_mode nir_mode =
+ base->mode == vtn_variable_mode_ssbo ? nir_var_mem_ssbo : nir_var_mem_ubo;
+
+ tail = nir_build_deref_cast(&b->nb, desc, nir_mode, type->type,
+ base->ptr_type->stride);
+ } else {
+ assert(base->var && base->var->var);
+ tail = nir_build_deref_var(&b->nb, base->var->var);
+ if (base->ptr_type && base->ptr_type->type) {
+ tail->dest.ssa.num_components =
+ glsl_get_vector_elements(base->ptr_type->type);
+ tail->dest.ssa.bit_size = glsl_get_bit_size(base->ptr_type->type);
+ }
+ }
+
+ if (idx == 0 && deref_chain->ptr_as_array) {
+ /* We start with a deref cast to get the stride. Hopefully, we'll be
+ * able to delete that cast eventually.
+ */
+ tail = nir_build_deref_cast(&b->nb, &tail->dest.ssa, tail->mode,
+ tail->type, base->ptr_type->stride);
+
+ nir_ssa_def *index = vtn_access_link_as_ssa(b, deref_chain->link[0], 1,
+ tail->dest.ssa.bit_size);
+ tail = nir_build_deref_ptr_as_array(&b->nb, tail, index);
+ idx++;
+ }
+
+ for (; idx < deref_chain->length; idx++) {
if (glsl_type_is_struct(type->type)) {
- assert(chain->link[i].mode == vtn_access_mode_literal);
- type = type->members[chain->link[i].id];
+ vtn_assert(deref_chain->link[idx].mode == vtn_access_mode_literal);
+ unsigned field = deref_chain->link[idx].id;
+ tail = nir_build_deref_struct(&b->nb, tail, field);
+ type = type->members[field];
} else {
+ nir_ssa_def *arr_index =
+ vtn_access_link_as_ssa(b, deref_chain->link[idx], 1,
+ tail->dest.ssa.bit_size);
+ tail = nir_build_deref_array(&b->nb, tail, arr_index);
type = type->array_element;
}
+
+ access |= type->access;
}
- return type;
+
+ struct vtn_pointer *ptr = rzalloc(b, struct vtn_pointer);
+ ptr->mode = base->mode;
+ ptr->type = type;
+ ptr->var = base->var;
+ ptr->deref = tail;
+ ptr->access = access;
+
+ return ptr;
}
-/* 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)
+static struct vtn_pointer *
+vtn_ssa_offset_pointer_dereference(struct vtn_builder *b,
+ struct vtn_pointer *base,
+ struct vtn_access_chain *deref_chain)
{
- 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_ssa_def *block_index = base->block_index;
+ nir_ssa_def *offset = base->offset;
+ struct vtn_type *type = base->type;
+ enum gl_access_qualifier access = base->access;
+
+ unsigned idx = 0;
+ if (base->mode == vtn_variable_mode_ubo ||
+ base->mode == vtn_variable_mode_ssbo) {
+ if (!block_index) {
+ vtn_assert(base->var && base->type);
+ nir_ssa_def *desc_arr_idx;
+ if (glsl_type_is_array(type->type)) {
+ if (deref_chain->length >= 1) {
+ desc_arr_idx =
+ vtn_access_link_as_ssa(b, deref_chain->link[0], 1, 32);
+ idx++;
+ /* This consumes a level of type */
+ type = type->array_element;
+ access |= type->access;
+ } else {
+ /* This is annoying. We've been asked for a pointer to the
+ * array of UBOs/SSBOs and not a specifc buffer. Return a
+ * pointer with a descriptor index of 0 and we'll have to do
+ * a reindex later to adjust it to the right thing.
+ */
+ desc_arr_idx = nir_imm_int(&b->nb, 0);
+ }
+ } else if (deref_chain->ptr_as_array) {
+ /* You can't have a zero-length OpPtrAccessChain */
+ vtn_assert(deref_chain->length >= 1);
+ desc_arr_idx = vtn_access_link_as_ssa(b, deref_chain->link[0], 1, 32);
+ } else {
+ /* We have a regular non-array SSBO. */
+ desc_arr_idx = NULL;
+ }
+ block_index = vtn_variable_resource_index(b, base->var, desc_arr_idx);
+ } else if (deref_chain->ptr_as_array &&
+ type->base_type == vtn_base_type_struct && type->block) {
+ /* We are doing an OpPtrAccessChain on a pointer to a struct that is
+ * decorated block. This is an interesting corner in the SPIR-V
+ * spec. One interpretation would be that they client is clearly
+ * trying to treat that block as if it's an implicit array of blocks
+ * repeated in the buffer. However, the SPIR-V spec for the
+ * OpPtrAccessChain says:
+ *
+ * "Base is treated as the address of the first element of an
+ * array, and the Element element’s address is computed to be the
+ * base for the Indexes, as per OpAccessChain."
+ *
+ * Taken literally, that would mean that your struct type is supposed
+ * to be treated as an array of such a struct and, since it's
+ * decorated block, that means an array of blocks which corresponds
+ * to an array descriptor. Therefore, we need to do a reindex
+ * operation to add the index from the first link in the access chain
+ * to the index we recieved.
+ *
+ * The downside to this interpretation (there always is one) is that
+ * this might be somewhat surprising behavior to apps if they expect
+ * the implicit array behavior described above.
+ */
+ vtn_assert(deref_chain->length >= 1);
+ nir_ssa_def *offset_index =
+ vtn_access_link_as_ssa(b, deref_chain->link[0], 1, 32);
+ idx++;
+
+ block_index = vtn_resource_reindex(b, base->mode,
+ block_index, offset_index);
+ }
}
-}
-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;
+ if (!offset) {
+ if (base->mode == vtn_variable_mode_workgroup) {
+ /* SLM doesn't need nor have a block index */
+ vtn_assert(!block_index);
+
+ /* We need the variable for the base offset */
+ vtn_assert(base->var);
+
+ /* We need ptr_type for size and alignment */
+ vtn_assert(base->ptr_type);
+
+ /* Assign location on first use so that we don't end up bloating SLM
+ * address space for variables which are never statically used.
+ */
+ if (base->var->shared_location < 0) {
+ vtn_assert(base->ptr_type->length > 0 && base->ptr_type->align > 0);
+ b->shader->num_shared = vtn_align_u32(b->shader->num_shared,
+ base->ptr_type->align);
+ base->var->shared_location = b->shader->num_shared;
+ b->shader->num_shared += base->ptr_type->length;
+ }
+
+ offset = nir_imm_int(&b->nb, base->var->shared_location);
+ } else if (base->mode == vtn_variable_mode_push_constant) {
+ /* Push constants neither need nor have a block index */
+ vtn_assert(!block_index);
+
+ /* Start off with at the start of the push constant block. */
+ offset = nir_imm_int(&b->nb, 0);
+ } else {
+ /* The code above should have ensured a block_index when needed. */
+ vtn_assert(block_index);
+
+ /* Start off with at the start of the buffer. */
+ offset = nir_imm_int(&b->nb, 0);
+ }
}
- struct vtn_type *deref_type = chain->var->type;
- nir_deref *tail = &deref_var->deref;
- nir_variable **members = chain->var->members;
+ if (deref_chain->ptr_as_array && idx == 0) {
+ /* We need ptr_type for the stride */
+ vtn_assert(base->ptr_type);
+
+ /* We need at least one element in the chain */
+ vtn_assert(deref_chain->length >= 1);
+
+ nir_ssa_def *elem_offset =
+ vtn_access_link_as_ssa(b, deref_chain->link[idx],
+ base->ptr_type->stride, offset->bit_size);
+ offset = nir_iadd(&b->nb, offset, elem_offset);
+ idx++;
+ }
- for (unsigned i = 0; i < chain->length; i++) {
- enum glsl_base_type base_type = glsl_get_base_type(deref_type->type);
- switch (base_type) {
+ for (; idx < deref_chain->length; idx++) {
+ switch (glsl_get_base_type(type->type)) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
+ case GLSL_TYPE_UINT16:
+ case GLSL_TYPE_INT16:
+ case GLSL_TYPE_UINT8:
+ case GLSL_TYPE_INT8:
+ case GLSL_TYPE_UINT64:
+ case GLSL_TYPE_INT64:
case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_FLOAT16:
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;
+ nir_ssa_def *elem_offset =
+ vtn_access_link_as_ssa(b, deref_chain->link[idx],
+ type->stride, offset->bit_size);
+ offset = nir_iadd(&b->nb, offset, elem_offset);
+ type = type->array_element;
+ access |= type->access;
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;
- }
+ vtn_assert(deref_chain->link[idx].mode == vtn_access_mode_literal);
+ unsigned member = deref_chain->link[idx].id;
+ offset = nir_iadd_imm(&b->nb, offset, type->offsets[member]);
+ type = type->members[member];
+ access |= type->access;
break;
}
+
default:
- unreachable("Invalid type for deref");
+ vtn_fail("Invalid type for deref");
}
}
- assert(members == NULL);
- return deref_var;
+ struct vtn_pointer *ptr = rzalloc(b, struct vtn_pointer);
+ ptr->mode = base->mode;
+ ptr->type = type;
+ ptr->block_index = block_index;
+ ptr->offset = offset;
+ ptr->access = access;
+
+ return ptr;
}
-static void
-_vtn_local_load_store(struct vtn_builder *b, bool load, nir_deref_var *deref,
- nir_deref *tail, struct vtn_ssa_value *inout)
+/* Dereference the given base pointer by the access chain */
+static struct vtn_pointer *
+vtn_pointer_dereference(struct vtn_builder *b,
+ struct vtn_pointer *base,
+ struct vtn_access_chain *deref_chain)
{
- /* 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 (vtn_pointer_uses_ssa_offset(b, base)) {
+ return vtn_ssa_offset_pointer_dereference(b, base, deref_chain);
+ } else {
+ return vtn_nir_deref_pointer_dereference(b, base, deref_chain);
+ }
+}
- 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;
+struct vtn_pointer *
+vtn_pointer_for_variable(struct vtn_builder *b,
+ struct vtn_variable *var, struct vtn_type *ptr_type)
+{
+ struct vtn_pointer *pointer = rzalloc(b, struct vtn_pointer);
+
+ pointer->mode = var->mode;
+ pointer->type = var->type;
+ vtn_assert(ptr_type->base_type == vtn_base_type_pointer);
+ vtn_assert(ptr_type->deref->type == var->type->type);
+ pointer->ptr_type = ptr_type;
+ pointer->var = var;
+ pointer->access = var->access | var->type->access;
+
+ return pointer;
+}
+
+/* Returns an atomic_uint type based on the original uint type. The returned
+ * type will be equivalent to the original one but will have an atomic_uint
+ * type as leaf instead of an uint.
+ *
+ * Manages uint scalars, arrays, and arrays of arrays of any nested depth.
+ */
+static const struct glsl_type *
+repair_atomic_type(const struct glsl_type *type)
+{
+ assert(glsl_get_base_type(glsl_without_array(type)) == GLSL_TYPE_UINT);
+ assert(glsl_type_is_scalar(glsl_without_array(type)));
+
+ if (glsl_type_is_array(type)) {
+ const struct glsl_type *atomic =
+ repair_atomic_type(glsl_get_array_element(type));
+
+ return glsl_array_type(atomic, glsl_get_length(type),
+ glsl_get_explicit_stride(type));
+ } else {
+ return glsl_atomic_uint_type();
+ }
+}
+
+nir_deref_instr *
+vtn_pointer_to_deref(struct vtn_builder *b, struct vtn_pointer *ptr)
+{
+ if (b->wa_glslang_179) {
+ /* Do on-the-fly copy propagation for samplers. */
+ if (ptr->var && ptr->var->copy_prop_sampler)
+ return vtn_pointer_to_deref(b, ptr->var->copy_prop_sampler);
+ }
- nir_intrinsic_op op = load ? nir_intrinsic_load_var :
- nir_intrinsic_store_var;
+ vtn_assert(!vtn_pointer_uses_ssa_offset(b, ptr));
+ if (!ptr->deref) {
+ struct vtn_access_chain chain = {
+ .length = 0,
+ };
+ ptr = vtn_nir_deref_pointer_dereference(b, ptr, &chain);
+ }
- 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);
+ return ptr->deref;
+}
+static void
+_vtn_local_load_store(struct vtn_builder *b, bool load, nir_deref_instr *deref,
+ struct vtn_ssa_value *inout)
+{
+ if (glsl_type_is_vector_or_scalar(deref->type)) {
if (load) {
- nir_ssa_dest_init(&intrin->instr, &intrin->dest,
- intrin->num_components,
- glsl_get_bit_size(tail->type),
- NULL);
- inout->def = &intrin->dest.ssa;
+ inout->def = nir_load_deref(&b->nb, deref);
} else {
- nir_intrinsic_set_write_mask(intrin, (1 << intrin->num_components) - 1);
- intrin->src[0] = nir_src_for_ssa(inout->def);
+ nir_store_deref(&b->nb, deref, inout->def, ~0);
}
-
- 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;
+ } else if (glsl_type_is_array(deref->type) ||
+ glsl_type_is_matrix(deref->type)) {
+ unsigned elems = glsl_get_length(deref->type);
for (unsigned i = 0; i < elems; i++) {
- deref_arr->base_offset = i;
- _vtn_local_load_store(b, load, deref, tail->child, inout->elems[i]);
+ nir_deref_instr *child =
+ nir_build_deref_array(&b->nb, deref, nir_imm_int(&b->nb, i));
+ _vtn_local_load_store(b, load, 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;
+ vtn_assert(glsl_type_is_struct(deref->type));
+ unsigned elems = glsl_get_length(deref->type);
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]);
+ nir_deref_instr *child = nir_build_deref_struct(&b->nb, deref, i);
+ _vtn_local_load_store(b, load, child, inout->elems[i]);
}
}
-
- tail->child = old_child;
}
-nir_deref_var *
+nir_deref_instr *
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);
+ struct vtn_pointer *ptr = vtn_value(b, id, vtn_value_type_pointer)->pointer;
+ return vtn_pointer_to_deref(b, ptr);
}
/*
* selecting which component due to OpAccessChain supporting per-component
* indexing in SPIR-V.
*/
-static nir_deref *
-get_deref_tail(nir_deref_var *deref)
+static nir_deref_instr *
+get_deref_tail(nir_deref_instr *deref)
{
- nir_deref *cur = &deref->deref;
- while (!glsl_type_is_vector_or_scalar(cur->type) && cur->child)
- cur = cur->child;
+ if (deref->deref_type != nir_deref_type_array)
+ return deref;
+
+ nir_deref_instr *parent =
+ nir_instr_as_deref(deref->parent.ssa->parent_instr);
- return cur;
+ if (glsl_type_is_vector(parent->type))
+ return parent;
+ else
+ return deref;
}
struct vtn_ssa_value *
-vtn_local_load(struct vtn_builder *b, nir_deref_var *src)
+vtn_local_load(struct vtn_builder *b, nir_deref_instr *src)
{
- nir_deref *src_tail = get_deref_tail(src);
+ nir_deref_instr *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);
+ _vtn_local_load_store(b, true, src_tail, val);
+
+ if (src_tail != src) {
+ val->type = src->type;
+ if (nir_src_is_const(src->arr.index))
+ val->def = vtn_vector_extract(b, val->def,
+ nir_src_as_uint(src->arr.index));
else
- val->def = vtn_vector_extract_dynamic(b, val->def,
- vec_deref->indirect.ssa);
+ val->def = vtn_vector_extract_dynamic(b, val->def, src->arr.index.ssa);
}
return val;
void
vtn_local_store(struct vtn_builder *b, struct vtn_ssa_value *src,
- nir_deref_var *dest)
+ nir_deref_instr *dest)
{
- nir_deref *dest_tail = get_deref_tail(dest);
+ nir_deref_instr *dest_tail = get_deref_tail(dest);
- if (dest_tail->child) {
+ if (dest_tail != dest) {
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)
+ _vtn_local_load_store(b, true, dest_tail, val);
+
+ if (nir_src_is_const(dest->arr.index))
val->def = vtn_vector_insert(b, val->def, src->def,
- deref->base_offset);
+ nir_src_as_uint(dest->arr.index));
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);
+ dest->arr.index.ssa);
+ _vtn_local_load_store(b, false, dest_tail, val);
} else {
- _vtn_local_load_store(b, false, dest, dest_tail, src);
+ _vtn_local_load_store(b, false, 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)
+nir_ssa_def *
+vtn_pointer_to_offset(struct vtn_builder *b, struct vtn_pointer *ptr,
+ nir_ssa_def **index_out)
{
- /* 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;
+ assert(vtn_pointer_uses_ssa_offset(b, ptr));
+ if (!ptr->offset) {
+ struct vtn_access_chain chain = {
+ .length = 0,
+ };
+ ptr = vtn_ssa_offset_pointer_dereference(b, ptr, &chain);
}
-
- 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, 32, NULL);
- nir_builder_instr_insert(&b->nb, &instr->instr);
-
- return &instr->dest.ssa;
+ *index_out = ptr->block_index;
+ return ptr->offset;
}
-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)
+/* 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_builder *b, struct vtn_type *type)
{
- 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;
+ 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_UINT16:
+ case GLSL_TYPE_INT16:
+ case GLSL_TYPE_UINT8:
+ case GLSL_TYPE_INT8:
+ case GLSL_TYPE_UINT64:
+ case GLSL_TYPE_INT64:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_FLOAT16:
+ 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) {
+ vtn_assert(type->stride > 0);
+ return type->stride * cols;
+ } else {
+ unsigned type_size = glsl_get_bit_size(type->type) / 8;
+ return glsl_get_vector_elements(type->type) * type_size;
}
+ }
- default:
- unreachable("Invalid type for deref");
+ 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(b, type->members[f]);
+ size = MAX2(size, field_end);
}
+ return size;
}
-end:
- *type_out = type;
- if (end_idx_out)
- *end_idx_out = idx;
+ case GLSL_TYPE_ARRAY:
+ vtn_assert(type->stride > 0);
+ vtn_assert(glsl_get_length(type->type) > 0);
+ return type->stride * glsl_get_length(type->type);
- return offset;
+ default:
+ vtn_fail("Invalid block type");
+ return 0;
+ }
}
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)
+ unsigned access_offset, unsigned access_size,
+ struct vtn_ssa_value **inout, const struct glsl_type *type,
+ enum gl_access_qualifier access)
{
nir_intrinsic_instr *instr = nir_intrinsic_instr_create(b->nb.shader, op);
instr->num_components = glsl_get_vector_elements(type);
+ /* Booleans usually shouldn't show up in external memory in SPIR-V.
+ * However, they do for certain older GLSLang versions and can for shared
+ * memory when we lower access chains internally.
+ */
+ const unsigned data_bit_size = glsl_type_is_boolean(type) ? 32 :
+ glsl_get_bit_size(type);
+
int src = 0;
if (!load) {
nir_intrinsic_set_write_mask(instr, (1 << instr->num_components) - 1);
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) {
- nir_intrinsic_set_base(instr, 0);
- nir_intrinsic_set_range(instr, 128);
+ nir_intrinsic_set_base(instr, access_offset);
+ nir_intrinsic_set_range(instr, access_size);
+ }
+
+ if (op == nir_intrinsic_load_ssbo ||
+ op == nir_intrinsic_store_ssbo) {
+ nir_intrinsic_set_access(instr, access);
}
+ /* With extensions like relaxed_block_layout, we really can't guarantee
+ * much more than scalar alignment.
+ */
+ if (op != nir_intrinsic_load_push_constant)
+ nir_intrinsic_set_align(instr, data_bit_size / 8, 0);
+
if (index)
instr->src[src++] = nir_src_for_ssa(index);
- instr->src[src++] = nir_src_for_ssa(offset);
+ if (op == nir_intrinsic_load_push_constant) {
+ /* We need to subtract the offset from where the intrinsic will load the
+ * data. */
+ instr->src[src++] =
+ nir_src_for_ssa(nir_isub(&b->nb, offset,
+ nir_imm_int(&b->nb, access_offset)));
+ } else {
+ instr->src[src++] = nir_src_for_ssa(offset);
+ }
if (load) {
nir_ssa_dest_init(&instr->instr, &instr->dest,
- instr->num_components,
- glsl_get_bit_size(type), NULL);
+ instr->num_components, data_bit_size, NULL);
(*inout)->def = &instr->dest.ssa;
}
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)
+ unsigned access_offset, unsigned access_size,
+ struct vtn_type *type, enum gl_access_qualifier access,
+ struct vtn_ssa_value **inout)
{
- if (chain && chain_idx >= chain->length)
- chain = NULL;
-
- if (load && chain == NULL && *inout == NULL)
+ if (load && *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_UINT16:
+ case GLSL_TYPE_INT16:
+ case GLSL_TYPE_UINT8:
+ case GLSL_TYPE_INT8:
+ case GLSL_TYPE_UINT64:
+ case GLSL_TYPE_INT64:
case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_FLOAT16:
+ case GLSL_TYPE_DOUBLE:
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;
- }
+ /* Loading the whole matrix */
+ struct vtn_ssa_value *transpose;
+ unsigned num_ops, vec_width, col_stride;
+ if (type->row_major) {
+ num_ops = glsl_get_vector_elements(type->type);
+ vec_width = glsl_get_matrix_columns(type->type);
+ col_stride = type->array_element->stride;
+ 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 {
- num_ops = glsl_get_matrix_columns(type->type);
- vec_width = glsl_get_vector_elements(type->type);
+ 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);
+ col_stride = type->stride;
+ }
+
+ for (unsigned i = 0; i < num_ops; i++) {
+ nir_ssa_def *elem_offset =
+ nir_iadd_imm(&b->nb, offset, i * col_stride);
+ _vtn_load_store_tail(b, op, load, index, elem_offset,
+ access_offset, access_size,
+ &(*inout)->elems[i],
+ glsl_vector_type(base_type, vec_width),
+ type->access | access);
+ }
+
+ if (load && type->row_major)
+ *inout = vtn_ssa_transpose(b, *inout);
+ } else {
+ unsigned elems = glsl_get_vector_elements(type->type);
+ unsigned type_size = glsl_get_bit_size(type->type) / 8;
+ if (elems == 1 || type->stride == type_size) {
+ /* This is a tightly-packed normal scalar or vector load */
+ vtn_assert(glsl_type_is_vector_or_scalar(type->type));
+ _vtn_load_store_tail(b, op, load, index, offset,
+ access_offset, access_size,
+ inout, type->type,
+ type->access | access);
+ } else {
+ /* This is a strided load. We have to load N things separately.
+ * This is the single column of a row-major matrix case.
+ */
+ vtn_assert(type->stride > type_size);
+ vtn_assert(type->stride % type_size == 0);
- for (unsigned i = 0; i < num_ops; i++) {
+ nir_ssa_def *per_comp[4];
+ for (unsigned i = 0; i < elems; i++) {
nir_ssa_def *elem_offset =
- nir_iadd(&b->nb, offset,
- nir_imm_int(&b->nb, i * type->stride));
+ nir_iadd_imm(&b->nb, offset, 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,
- &(*inout)->elems[i],
- glsl_vector_type(base_type, vec_width));
+ access_offset, access_size,
+ &comp, glsl_scalar_type(base_type),
+ type->access | access);
+ per_comp[i] = comp->def;
}
- 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);
- }
+ if (load) {
+ if (*inout == NULL)
+ *inout = vtn_create_ssa_value(b, type->type);
+ (*inout)->def = nir_vec(&b->nb, per_comp, elems);
}
- } 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;
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]);
+ nir_iadd_imm(&b->nb, offset, i * type->stride);
+ _vtn_block_load_store(b, op, load, index, elem_off,
+ access_offset, access_size,
+ type->array_element,
+ type->array_element->access | access,
+ &(*inout)->elems[i]);
}
return;
}
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]);
+ nir_iadd_imm(&b->nb, offset, type->offsets[i]);
+ _vtn_block_load_store(b, op, load, index, elem_off,
+ access_offset, access_size,
+ type->members[i],
+ type->members[i]->access | access,
+ &(*inout)->elems[i]);
}
return;
}
default:
- unreachable("Invalid block member type");
+ vtn_fail("Invalid block member type");
}
}
static struct vtn_ssa_value *
-vtn_block_load(struct vtn_builder *b, struct vtn_access_chain *src)
+vtn_block_load(struct vtn_builder *b, struct vtn_pointer *src)
{
nir_intrinsic_op op;
- switch (src->var->mode) {
+ unsigned access_offset = 0, access_size = 0;
+ switch (src->mode) {
case vtn_variable_mode_ubo:
op = nir_intrinsic_load_ubo;
break;
break;
case vtn_variable_mode_push_constant:
op = nir_intrinsic_load_push_constant;
+ access_size = b->shader->num_uniforms;
+ break;
+ case vtn_variable_mode_workgroup:
+ op = nir_intrinsic_load_shared;
break;
default:
- assert(!"Invalid block variable mode");
+ vtn_fail("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);
+ offset = vtn_pointer_to_offset(b, src, &index);
struct vtn_ssa_value *value = NULL;
_vtn_block_load_store(b, op, true, index, offset,
- src, chain_idx, type, &value);
+ access_offset, access_size,
+ src->type, src->access, &value);
return value;
}
static void
vtn_block_store(struct vtn_builder *b, struct vtn_ssa_value *src,
- struct vtn_access_chain *dst)
+ struct vtn_pointer *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);
+ nir_intrinsic_op op;
+ switch (dst->mode) {
+ case vtn_variable_mode_ssbo:
+ op = nir_intrinsic_store_ssbo;
+ break;
+ case vtn_variable_mode_workgroup:
+ op = nir_intrinsic_store_shared;
+ break;
+ default:
+ vtn_fail("Invalid block variable mode");
+ }
- _vtn_block_load_store(b, nir_intrinsic_store_ssbo, false, index, offset,
- dst, chain_idx, type, &src);
-}
+ nir_ssa_def *offset, *index = NULL;
+ offset = vtn_pointer_to_offset(b, dst, &index);
-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;
+ _vtn_block_load_store(b, op, false, index, offset,
+ 0, 0, dst->type, dst->access, &src);
}
static void
_vtn_variable_load_store(struct vtn_builder *b, bool load,
- struct vtn_access_chain *chain,
- struct vtn_type *tail_type,
+ struct vtn_pointer *ptr,
struct vtn_ssa_value **inout)
{
- enum glsl_base_type base_type = glsl_get_base_type(tail_type->type);
+ enum glsl_base_type base_type = glsl_get_base_type(ptr->type->type);
switch (base_type) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
+ case GLSL_TYPE_UINT16:
+ case GLSL_TYPE_INT16:
+ case GLSL_TYPE_UINT8:
+ case GLSL_TYPE_INT8:
+ case GLSL_TYPE_UINT64:
+ case GLSL_TYPE_INT64:
case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_FLOAT16:
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));
+ case GLSL_TYPE_DOUBLE:
+ if (glsl_type_is_vector_or_scalar(ptr->type->type)) {
+ /* We hit a vector or scalar; go ahead and emit the load[s] */
+ nir_deref_instr *deref = vtn_pointer_to_deref(b, ptr);
+ if (vtn_pointer_is_external_block(b, ptr)) {
+ /* If it's external, we call nir_load/store_deref directly. The
+ * vtn_local_load/store helpers are too clever and do magic to
+ * avoid array derefs of vectors. That magic is both less
+ * efficient than the direct load/store and, in the case of
+ * stores, is broken because it creates a race condition if two
+ * threads are writing to different components of the same vector
+ * due to the load+insert+store it uses to emulate the array
+ * deref.
+ */
+ if (load) {
+ *inout = vtn_create_ssa_value(b, ptr->type->type);
+ (*inout)->def = nir_load_deref(&b->nb, deref);
+ } else {
+ nir_store_deref(&b->nb, deref, (*inout)->def, ~0);
+ }
+ } else {
+ if (load) {
+ *inout = vtn_local_load(b, deref);
+ } else {
+ vtn_local_store(b, *inout, deref);
+ }
+ }
+ return;
}
- return;
+ /* Fall through */
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);
+ unsigned elems = glsl_get_length(ptr->type->type);
if (load) {
- assert(*inout == NULL);
+ vtn_assert(*inout == NULL);
*inout = rzalloc(b, struct vtn_ssa_value);
- (*inout)->type = tail_type->type;
+ (*inout)->type = ptr->type->type;
(*inout)->elems = rzalloc_array(b, struct vtn_ssa_value *, elems);
}
+
+ struct vtn_access_chain chain = {
+ .length = 1,
+ .link = {
+ { .mode = vtn_access_mode_literal, },
+ }
+ };
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]);
+ chain.link[0].id = i;
+ struct vtn_pointer *elem = vtn_pointer_dereference(b, ptr, &chain);
+ _vtn_variable_load_store(b, load, elem, &(*inout)->elems[i]);
}
return;
}
default:
- unreachable("Invalid access chain type");
+ vtn_fail("Invalid access chain type");
}
}
struct vtn_ssa_value *
-vtn_variable_load(struct vtn_builder *b, struct vtn_access_chain *src)
+vtn_variable_load(struct vtn_builder *b, struct vtn_pointer *src)
{
- if (vtn_variable_is_external_block(src->var)) {
+ if (vtn_pointer_uses_ssa_offset(b, src)) {
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);
+ _vtn_variable_load_store(b, true, src, &val);
return val;
}
}
void
vtn_variable_store(struct vtn_builder *b, struct vtn_ssa_value *src,
- struct vtn_access_chain *dest)
+ struct vtn_pointer *dest)
{
- if (vtn_variable_is_external_block(dest->var)) {
- assert(dest->var->mode == vtn_variable_mode_ssbo);
+ if (vtn_pointer_uses_ssa_offset(b, dest)) {
+ vtn_assert(dest->mode == vtn_variable_mode_ssbo ||
+ dest->mode == vtn_variable_mode_workgroup);
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);
+ _vtn_variable_load_store(b, false, dest, &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)
+_vtn_variable_copy(struct vtn_builder *b, struct vtn_pointer *dest,
+ struct vtn_pointer *src)
{
- enum glsl_base_type base_type = glsl_get_base_type(tail_type->type);
+ vtn_assert(src->type->type == dest->type->type);
+ enum glsl_base_type base_type = glsl_get_base_type(src->type->type);
switch (base_type) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
+ case GLSL_TYPE_UINT16:
+ case GLSL_TYPE_INT16:
+ case GLSL_TYPE_UINT8:
+ case GLSL_TYPE_INT8:
+ case GLSL_TYPE_UINT64:
+ case GLSL_TYPE_INT64:
case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_FLOAT16:
+ case GLSL_TYPE_DOUBLE:
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
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);
+ struct vtn_access_chain chain = {
+ .length = 1,
+ .link = {
+ { .mode = vtn_access_mode_literal, },
+ }
+ };
+ unsigned elems = glsl_get_length(src->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);
+ chain.link[0].id = i;
+ struct vtn_pointer *src_elem =
+ vtn_pointer_dereference(b, src, &chain);
+ struct vtn_pointer *dest_elem =
+ vtn_pointer_dereference(b, dest, &chain);
+
+ _vtn_variable_copy(b, dest_elem, src_elem);
}
return;
}
default:
- unreachable("Invalid access chain type");
+ vtn_fail("Invalid access chain type");
}
}
static void
-vtn_variable_copy(struct vtn_builder *b, struct vtn_access_chain *dest,
- struct vtn_access_chain *src)
+vtn_variable_copy(struct vtn_builder *b, struct vtn_pointer *dest,
+ struct vtn_pointer *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);
+ _vtn_variable_copy(b, dest, src);
}
static void
-set_mode_system_value(nir_variable_mode *mode)
+set_mode_system_value(struct vtn_builder *b, nir_variable_mode *mode)
{
- assert(*mode == nir_var_system_value || *mode == nir_var_shader_in);
+ vtn_assert(*mode == nir_var_system_value || *mode == nir_var_shader_in);
*mode = nir_var_system_value;
}
case SpvBuiltInCullDistance:
*location = VARYING_SLOT_CULL_DIST0;
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.
+ case SpvBuiltInVertexIndex:
+ /* The Vulkan spec defines VertexIndex to be non-zero-based and doesn't
+ * allow VertexId. The ARB_gl_spirv spec defines VertexId to be the
+ * same as gl_VertexID, which is non-zero-based, and removes
+ * VertexIndex. Since they're both defined to be non-zero-based, we use
+ * SYSTEM_VALUE_VERTEX_ID for both.
*/
- *location = SYSTEM_VALUE_VERTEX_ID_ZERO_BASE;
- set_mode_system_value(mode);
+ *location = SYSTEM_VALUE_VERTEX_ID;
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInInstanceIndex:
*location = SYSTEM_VALUE_INSTANCE_INDEX;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInInstanceId:
*location = SYSTEM_VALUE_INSTANCE_ID;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInPrimitiveId:
- *location = VARYING_SLOT_PRIMITIVE_ID;
- *mode = nir_var_shader_out;
+ if (b->shader->info.stage == MESA_SHADER_FRAGMENT) {
+ vtn_assert(*mode == nir_var_shader_in);
+ *location = VARYING_SLOT_PRIMITIVE_ID;
+ } else if (*mode == nir_var_shader_out) {
+ *location = VARYING_SLOT_PRIMITIVE_ID;
+ } else {
+ *location = SYSTEM_VALUE_PRIMITIVE_ID;
+ set_mode_system_value(b, mode);
+ }
break;
case SpvBuiltInInvocationId:
*location = SYSTEM_VALUE_INVOCATION_ID;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInLayer:
*location = VARYING_SLOT_LAYER;
- *mode = nir_var_shader_out;
+ if (b->shader->info.stage == MESA_SHADER_FRAGMENT)
+ *mode = nir_var_shader_in;
+ else if (b->shader->info.stage == MESA_SHADER_GEOMETRY)
+ *mode = nir_var_shader_out;
+ else if (b->options && b->options->caps.shader_viewport_index_layer &&
+ (b->shader->info.stage == MESA_SHADER_VERTEX ||
+ b->shader->info.stage == MESA_SHADER_TESS_EVAL))
+ *mode = nir_var_shader_out;
+ else
+ vtn_fail("invalid stage for SpvBuiltInLayer");
break;
case SpvBuiltInViewportIndex:
*location = VARYING_SLOT_VIEWPORT;
- if (b->shader->stage == MESA_SHADER_GEOMETRY)
+ if (b->shader->info.stage == MESA_SHADER_GEOMETRY)
+ *mode = nir_var_shader_out;
+ else if (b->options && b->options->caps.shader_viewport_index_layer &&
+ (b->shader->info.stage == MESA_SHADER_VERTEX ||
+ b->shader->info.stage == MESA_SHADER_TESS_EVAL))
*mode = nir_var_shader_out;
- else if (b->shader->stage == MESA_SHADER_FRAGMENT)
+ else if (b->shader->info.stage == MESA_SHADER_FRAGMENT)
*mode = nir_var_shader_in;
else
- unreachable("invalid stage for SpvBuiltInViewportIndex");
+ vtn_fail("invalid stage for SpvBuiltInViewportIndex");
break;
case SpvBuiltInTessLevelOuter:
+ *location = VARYING_SLOT_TESS_LEVEL_OUTER;
+ break;
case SpvBuiltInTessLevelInner:
+ *location = VARYING_SLOT_TESS_LEVEL_INNER;
+ break;
case SpvBuiltInTessCoord:
+ *location = SYSTEM_VALUE_TESS_COORD;
+ set_mode_system_value(b, mode);
+ break;
case SpvBuiltInPatchVertices:
- unreachable("no tessellation support");
+ *location = SYSTEM_VALUE_VERTICES_IN;
+ set_mode_system_value(b, mode);
+ break;
case SpvBuiltInFragCoord:
*location = VARYING_SLOT_POS;
- assert(*mode == nir_var_shader_in);
+ vtn_assert(*mode == nir_var_shader_in);
break;
case SpvBuiltInPointCoord:
*location = VARYING_SLOT_PNTC;
- assert(*mode == nir_var_shader_in);
+ vtn_assert(*mode == nir_var_shader_in);
break;
case SpvBuiltInFrontFacing:
*location = SYSTEM_VALUE_FRONT_FACE;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInSampleId:
*location = SYSTEM_VALUE_SAMPLE_ID;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInSamplePosition:
*location = SYSTEM_VALUE_SAMPLE_POS;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInSampleMask:
- *location = SYSTEM_VALUE_SAMPLE_MASK_IN; /* XXX out? */
- set_mode_system_value(mode);
+ if (*mode == nir_var_shader_out) {
+ *location = FRAG_RESULT_SAMPLE_MASK;
+ } else {
+ *location = SYSTEM_VALUE_SAMPLE_MASK_IN;
+ set_mode_system_value(b, mode);
+ }
break;
case SpvBuiltInFragDepth:
*location = FRAG_RESULT_DEPTH;
- assert(*mode == nir_var_shader_out);
+ vtn_assert(*mode == nir_var_shader_out);
+ break;
+ case SpvBuiltInHelperInvocation:
+ *location = SYSTEM_VALUE_HELPER_INVOCATION;
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInNumWorkgroups:
*location = SYSTEM_VALUE_NUM_WORK_GROUPS;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInWorkgroupSize:
- /* This should already be handled */
- unreachable("unsupported builtin");
+ *location = SYSTEM_VALUE_LOCAL_GROUP_SIZE;
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInWorkgroupId:
*location = SYSTEM_VALUE_WORK_GROUP_ID;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInLocalInvocationId:
*location = SYSTEM_VALUE_LOCAL_INVOCATION_ID;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInLocalInvocationIndex:
*location = SYSTEM_VALUE_LOCAL_INVOCATION_INDEX;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
break;
case SpvBuiltInGlobalInvocationId:
*location = SYSTEM_VALUE_GLOBAL_INVOCATION_ID;
- set_mode_system_value(mode);
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInBaseVertex:
+ /* OpenGL gl_BaseVertex (SYSTEM_VALUE_BASE_VERTEX) is not the same
+ * semantic as SPIR-V BaseVertex (SYSTEM_VALUE_FIRST_VERTEX).
+ */
+ *location = SYSTEM_VALUE_FIRST_VERTEX;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInBaseInstance:
+ *location = SYSTEM_VALUE_BASE_INSTANCE;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInDrawIndex:
+ *location = SYSTEM_VALUE_DRAW_ID;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupSize:
+ *location = SYSTEM_VALUE_SUBGROUP_SIZE;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupId:
+ *location = SYSTEM_VALUE_SUBGROUP_ID;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupLocalInvocationId:
+ *location = SYSTEM_VALUE_SUBGROUP_INVOCATION;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInNumSubgroups:
+ *location = SYSTEM_VALUE_NUM_SUBGROUPS;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInDeviceIndex:
+ *location = SYSTEM_VALUE_DEVICE_INDEX;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInViewIndex:
+ *location = SYSTEM_VALUE_VIEW_INDEX;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupEqMask:
+ *location = SYSTEM_VALUE_SUBGROUP_EQ_MASK,
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupGeMask:
+ *location = SYSTEM_VALUE_SUBGROUP_GE_MASK,
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupGtMask:
+ *location = SYSTEM_VALUE_SUBGROUP_GT_MASK,
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupLeMask:
+ *location = SYSTEM_VALUE_SUBGROUP_LE_MASK,
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInSubgroupLtMask:
+ *location = SYSTEM_VALUE_SUBGROUP_LT_MASK,
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInFragStencilRefEXT:
+ *location = FRAG_RESULT_STENCIL;
+ vtn_assert(*mode == nir_var_shader_out);
+ break;
+ case SpvBuiltInWorkDim:
+ *location = SYSTEM_VALUE_WORK_DIM;
+ set_mode_system_value(b, mode);
+ break;
+ case SpvBuiltInGlobalSize:
+ *location = SYSTEM_VALUE_GLOBAL_GROUP_SIZE;
+ set_mode_system_value(b, mode);
break;
- case SpvBuiltInHelperInvocation:
default:
- unreachable("unsupported builtin");
+ vtn_fail("unsupported builtin: %u", builtin);
}
}
static void
-apply_var_decoration(struct vtn_builder *b, nir_variable *nir_var,
+apply_var_decoration(struct vtn_builder *b,
+ struct nir_variable_data *var_data,
const struct vtn_decoration *dec)
{
switch (dec->decoration) {
case SpvDecorationRelaxedPrecision:
break; /* FIXME: Do nothing with this for now. */
case SpvDecorationNoPerspective:
- nir_var->data.interpolation = INTERP_MODE_NOPERSPECTIVE;
+ var_data->interpolation = INTERP_MODE_NOPERSPECTIVE;
break;
case SpvDecorationFlat:
- nir_var->data.interpolation = INTERP_MODE_FLAT;
+ var_data->interpolation = INTERP_MODE_FLAT;
break;
case SpvDecorationCentroid:
- nir_var->data.centroid = true;
+ var_data->centroid = true;
break;
case SpvDecorationSample:
- nir_var->data.sample = true;
+ var_data->sample = true;
break;
case SpvDecorationInvariant:
- nir_var->data.invariant = true;
+ var_data->invariant = true;
break;
case SpvDecorationConstant:
- assert(nir_var->constant_initializer != NULL);
- nir_var->data.read_only = true;
+ var_data->read_only = true;
+ break;
+ case SpvDecorationNonReadable:
+ var_data->image.access |= ACCESS_NON_READABLE;
break;
case SpvDecorationNonWritable:
- nir_var->data.read_only = true;
+ var_data->read_only = true;
+ var_data->image.access |= ACCESS_NON_WRITEABLE;
+ break;
+ case SpvDecorationRestrict:
+ var_data->image.access |= ACCESS_RESTRICT;
+ break;
+ case SpvDecorationVolatile:
+ var_data->image.access |= ACCESS_VOLATILE;
+ break;
+ case SpvDecorationCoherent:
+ var_data->image.access |= ACCESS_COHERENT;
break;
case SpvDecorationComponent:
- nir_var->data.location_frac = dec->literals[0];
+ var_data->location_frac = dec->literals[0];
break;
case SpvDecorationIndex:
- nir_var->data.explicit_index = true;
- nir_var->data.index = dec->literals[0];
+ 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_variable_mode mode = var_data->mode;
+ vtn_get_builtin_location(b, builtin, &var_data->location, &mode);
+ var_data->mode = mode;
- 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;
+ switch (builtin) {
+ case SpvBuiltInTessLevelOuter:
+ case SpvBuiltInTessLevelInner:
+ var_data->compact = true;
+ break;
+ case SpvBuiltInFragCoord:
+ var_data->pixel_center_integer = b->pixel_center_integer;
+ /* fallthrough */
+ case SpvBuiltInSamplePosition:
+ var_data->origin_upper_left = b->origin_upper_left;
+ break;
+ default:
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;
-
- if (builtin == SpvBuiltInFragCoord)
- nir_var->data.pixel_center_integer = b->pixel_center_integer;
- break;
}
case SpvDecorationSpecId:
case SpvDecorationRowMajor:
case SpvDecorationColMajor:
case SpvDecorationMatrixStride:
- case SpvDecorationRestrict:
case SpvDecorationAliased:
- case SpvDecorationVolatile:
- case SpvDecorationCoherent:
- case SpvDecorationNonReadable:
case SpvDecorationUniform:
- case SpvDecorationStream:
- case SpvDecorationOffset:
case SpvDecorationLinkageAttributes:
break; /* Do nothing with these here */
case SpvDecorationPatch:
- vtn_warn("Tessellation not yet supported");
+ var_data->patch = true;
break;
case SpvDecorationLocation:
- unreachable("Handled above");
+ vtn_fail("Handled above");
case SpvDecorationBlock:
case SpvDecorationBufferBlock:
break;
case SpvDecorationXfbBuffer:
+ var_data->explicit_xfb_buffer = true;
+ var_data->xfb_buffer = dec->literals[0];
+ var_data->always_active_io = true;
+ break;
case SpvDecorationXfbStride:
- vtn_warn("Vulkan does not have transform feedback: %s",
- spirv_decoration_to_string(dec->decoration));
+ var_data->explicit_xfb_stride = true;
+ var_data->xfb_stride = dec->literals[0];
+ break;
+ case SpvDecorationOffset:
+ var_data->explicit_offset = true;
+ var_data->offset = dec->literals[0];
+ break;
+
+ case SpvDecorationStream:
+ var_data->stream = dec->literals[0];
break;
case SpvDecorationCPacked:
case SpvDecorationFPRoundingMode:
case SpvDecorationFPFastMathMode:
case SpvDecorationAlignment:
- vtn_warn("Decoraiton only allowed for CL-style kernels: %s",
- spirv_decoration_to_string(dec->decoration));
+ if (b->shader->info.stage != MESA_SHADER_KERNEL) {
+ vtn_warn("Decoration only allowed for CL-style kernels: %s",
+ spirv_decoration_to_string(dec->decoration));
+ }
break;
+
+ case SpvDecorationHlslSemanticGOOGLE:
+ /* HLSL semantic decorations can safely be ignored by the driver. */
+ break;
+
+ default:
+ vtn_fail("Unhandled decoration");
+ }
+}
+
+static void
+var_is_patch_cb(struct vtn_builder *b, struct vtn_value *val, int member,
+ const struct vtn_decoration *dec, void *out_is_patch)
+{
+ if (dec->decoration == SpvDecorationPatch) {
+ *((bool *) out_is_patch) = true;
}
}
switch (dec->decoration) {
case SpvDecorationBinding:
vtn_var->binding = dec->literals[0];
+ vtn_var->explicit_binding = true;
return;
case SpvDecorationDescriptorSet:
vtn_var->descriptor_set = dec->literals[0];
return;
+ case SpvDecorationInputAttachmentIndex:
+ vtn_var->input_attachment_index = dec->literals[0];
+ return;
+ case SpvDecorationPatch:
+ vtn_var->patch = true;
+ break;
+ case SpvDecorationOffset:
+ vtn_var->offset = dec->literals[0];
+ break;
+ case SpvDecorationNonWritable:
+ vtn_var->access |= ACCESS_NON_WRITEABLE;
+ break;
+ case SpvDecorationNonReadable:
+ vtn_var->access |= ACCESS_NON_READABLE;
+ break;
+ case SpvDecorationVolatile:
+ vtn_var->access |= ACCESS_VOLATILE;
+ break;
+ case SpvDecorationCoherent:
+ vtn_var->access |= ACCESS_COHERENT;
+ break;
+ case SpvDecorationHlslCounterBufferGOOGLE:
+ /* HLSL semantic decorations can safely be ignored by the driver. */
+ break;
default:
break;
}
- if (val->value_type == vtn_value_type_access_chain) {
- assert(val->access_chain->length == 0);
- assert(val->access_chain->var == void_var);
+ if (val->value_type == vtn_value_type_pointer) {
+ assert(val->pointer->var == void_var);
assert(member == -1);
} else {
assert(val->value_type == vtn_value_type_type);
*/
if (dec->decoration == SpvDecorationLocation) {
unsigned location = dec->literals[0];
- bool is_vertex_input;
- if (b->shader->stage == MESA_SHADER_FRAGMENT &&
+ bool is_vertex_input = false;
+ if (b->shader->info.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 &&
+ } else if (b->shader->info.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");
+ location += vtn_var->patch ? VARYING_SLOT_PATCH0 : VARYING_SLOT_VAR0;
+ } else if (vtn_var->mode != vtn_variable_mode_uniform) {
+ vtn_warn("Location must be on input, output, uniform, sampler or "
+ "image variable");
+ return;
}
- if (vtn_var->var) {
+ if (vtn_var->var->num_members == 0) {
/* This handles the member and lone variable cases */
vtn_var->var->data.location = location;
- vtn_var->var->data.explicit_location = true;
} else {
/* This handles the structure member case */
- assert(vtn_var->members);
- unsigned length =
- glsl_get_length(glsl_without_array(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);
+ assert(vtn_var->var->members);
+ for (unsigned i = 0; i < vtn_var->var->num_members; i++) {
+ vtn_var->var->members[i].location = location;
+ const struct glsl_type *member_type =
+ glsl_get_struct_field(vtn_var->var->interface_type, i);
+ location += glsl_count_attribute_slots(member_type,
+ is_vertex_input);
}
}
return;
} else {
if (vtn_var->var) {
- assert(member <= 0);
- apply_var_decoration(b, vtn_var->var, dec);
- } else if (vtn_var->members) {
- if (member >= 0) {
- assert(vtn_var->members);
- apply_var_decoration(b, vtn_var->members[member], dec);
+ if (vtn_var->var->num_members == 0) {
+ /* We call this function on types as well as variables and not all
+ * struct types get split so we can end up having stray member
+ * decorations; just ignore them.
+ */
+ if (member == -1)
+ apply_var_decoration(b, &vtn_var->var->data, dec);
+ } else if (member >= 0) {
+ /* Member decorations must come from a type */
+ assert(val->value_type == vtn_value_type_type);
+ apply_var_decoration(b, &vtn_var->var->members[member], dec);
} else {
unsigned length =
glsl_get_length(glsl_without_array(vtn_var->type->type));
for (unsigned i = 0; i < length; i++)
- apply_var_decoration(b, vtn_var->members[i], dec);
+ apply_var_decoration(b, &vtn_var->var->members[i], dec);
}
} else {
/* A few variables, those with external storage, have no actual
* nir_variables associated with them. Fortunately, all decorations
* we care about for those variables are on the type only.
*/
- assert(vtn_var->mode == vtn_variable_mode_ubo ||
- vtn_var->mode == vtn_variable_mode_ssbo ||
- vtn_var->mode == vtn_variable_mode_push_constant);
+ vtn_assert(vtn_var->mode == vtn_variable_mode_ubo ||
+ vtn_var->mode == vtn_variable_mode_ssbo ||
+ vtn_var->mode == vtn_variable_mode_push_constant ||
+ (vtn_var->mode == vtn_variable_mode_workgroup &&
+ b->options->lower_workgroup_access_to_offsets));
}
}
}
-/* 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)
+static enum vtn_variable_mode
+vtn_storage_class_to_mode(struct vtn_builder *b,
+ SpvStorageClass class,
+ struct vtn_type *interface_type,
+ nir_variable_mode *nir_mode_out)
{
- 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;
+ enum vtn_variable_mode mode;
+ nir_variable_mode nir_mode;
+ switch (class) {
+ case SpvStorageClassUniform:
+ if (interface_type->block) {
+ mode = vtn_variable_mode_ubo;
+ nir_mode = nir_var_mem_ubo;
+ } else if (interface_type->buffer_block) {
+ mode = vtn_variable_mode_ssbo;
+ nir_mode = nir_var_mem_ssbo;
} else {
- return glsl_get_vector_elements(type->type) * 4;
+ /* Default-block uniforms, coming from gl_spirv */
+ mode = vtn_variable_mode_uniform;
+ nir_mode = nir_var_uniform;
}
+ break;
+ case SpvStorageClassStorageBuffer:
+ mode = vtn_variable_mode_ssbo;
+ nir_mode = nir_var_mem_ssbo;
+ break;
+ case SpvStorageClassUniformConstant:
+ mode = vtn_variable_mode_uniform;
+ nir_mode = nir_var_uniform;
+ break;
+ case SpvStorageClassPushConstant:
+ mode = vtn_variable_mode_push_constant;
+ nir_mode = nir_var_uniform;
+ break;
+ case SpvStorageClassInput:
+ mode = vtn_variable_mode_input;
+ nir_mode = nir_var_shader_in;
+ break;
+ case SpvStorageClassOutput:
+ mode = vtn_variable_mode_output;
+ nir_mode = nir_var_shader_out;
+ break;
+ case SpvStorageClassPrivate:
+ mode = vtn_variable_mode_private;
+ nir_mode = nir_var_shader_temp;
+ break;
+ case SpvStorageClassFunction:
+ mode = vtn_variable_mode_function;
+ nir_mode = nir_var_function_temp;
+ break;
+ case SpvStorageClassWorkgroup:
+ mode = vtn_variable_mode_workgroup;
+ nir_mode = nir_var_mem_shared;
+ break;
+ case SpvStorageClassAtomicCounter:
+ mode = vtn_variable_mode_uniform;
+ nir_mode = nir_var_uniform;
+ break;
+ case SpvStorageClassCrossWorkgroup:
+ mode = vtn_variable_mode_cross_workgroup;
+ nir_mode = nir_var_mem_global;
+ break;
+ case SpvStorageClassGeneric:
+ default:
+ vtn_fail("Unhandled variable storage class");
}
- 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);
+ if (nir_mode_out)
+ *nir_mode_out = nir_mode;
+
+ return mode;
+}
+
+nir_ssa_def *
+vtn_pointer_to_ssa(struct vtn_builder *b, struct vtn_pointer *ptr)
+{
+ if (vtn_pointer_uses_ssa_offset(b, ptr)) {
+ /* This pointer needs to have a pointer type with actual storage */
+ vtn_assert(ptr->ptr_type);
+ vtn_assert(ptr->ptr_type->type);
+
+ if (!ptr->offset) {
+ /* If we don't have an offset then we must be a pointer to the variable
+ * itself.
+ */
+ vtn_assert(!ptr->offset && !ptr->block_index);
+
+ struct vtn_access_chain chain = {
+ .length = 0,
+ };
+ ptr = vtn_ssa_offset_pointer_dereference(b, ptr, &chain);
}
- 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);
+ vtn_assert(ptr->offset);
+ if (ptr->block_index) {
+ vtn_assert(ptr->mode == vtn_variable_mode_ubo ||
+ ptr->mode == vtn_variable_mode_ssbo);
+ return nir_vec2(&b->nb, ptr->block_index, ptr->offset);
+ } else {
+ vtn_assert(ptr->mode == vtn_variable_mode_workgroup);
+ return ptr->offset;
+ }
+ } else {
+ if (vtn_pointer_is_external_block(b, ptr) &&
+ vtn_type_contains_block(b, ptr->type)) {
+ const unsigned bit_size = glsl_get_bit_size(ptr->ptr_type->type);
+ const unsigned num_components =
+ glsl_get_vector_elements(ptr->ptr_type->type);
+
+ /* In this case, we're looking for a block index and not an actual
+ * deref.
+ */
+ if (!ptr->block_index) {
+ /* If we don't have a block_index then we must be a pointer to the
+ * variable itself.
+ */
+ vtn_assert(!ptr->deref);
- default:
- assert(!"Invalid block type");
- return 0;
+ struct vtn_access_chain chain = {
+ .length = 0,
+ };
+ ptr = vtn_nir_deref_pointer_dereference(b, ptr, &chain);
+ }
+
+ /* A block index is just a 32-bit value but the pointer has some
+ * other dimensionality. Cram it in there and we'll unpack it later
+ * in vtn_pointer_from_ssa.
+ */
+ const unsigned swiz[4] = { 0, };
+ return nir_swizzle(&b->nb, nir_u2u(&b->nb, ptr->block_index, bit_size),
+ swiz, num_components, false);
+ } else {
+ return &vtn_pointer_to_deref(b, ptr)->dest.ssa;
+ }
}
}
-void
-vtn_handle_variables(struct vtn_builder *b, SpvOp opcode,
- const uint32_t *w, unsigned count)
+struct vtn_pointer *
+vtn_pointer_from_ssa(struct vtn_builder *b, nir_ssa_def *ssa,
+ struct vtn_type *ptr_type)
{
- 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);
- 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");
+ vtn_assert(ssa->num_components <= 2 && ssa->bit_size == 32);
+ vtn_assert(ptr_type->base_type == vtn_base_type_pointer);
+
+ struct vtn_type *interface_type = ptr_type->deref;
+ while (interface_type->base_type == vtn_base_type_array)
+ interface_type = interface_type->array_element;
+
+ struct vtn_pointer *ptr = rzalloc(b, struct vtn_pointer);
+ nir_variable_mode nir_mode;
+ ptr->mode = vtn_storage_class_to_mode(b, ptr_type->storage_class,
+ interface_type, &nir_mode);
+ ptr->type = ptr_type->deref;
+ ptr->ptr_type = ptr_type;
+
+ if (b->wa_glslang_179) {
+ /* To work around https://github.com/KhronosGroup/glslang/issues/179 we
+ * need to whack the mode because it creates a function parameter with
+ * the Function storage class even though it's a pointer to a sampler.
+ * If we don't do this, then NIR won't get rid of the deref_cast for us.
+ */
+ if (ptr->mode == vtn_variable_mode_function &&
+ (ptr->type->base_type == vtn_base_type_sampler ||
+ ptr->type->base_type == vtn_base_type_sampled_image)) {
+ ptr->mode = vtn_variable_mode_uniform;
+ nir_mode = nir_var_uniform;
}
+ }
- 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.
+ if (vtn_pointer_uses_ssa_offset(b, ptr)) {
+ /* This pointer type needs to have actual storage */
+ vtn_assert(ptr_type->type);
+ if (ptr->mode == vtn_variable_mode_ubo ||
+ ptr->mode == vtn_variable_mode_ssbo) {
+ vtn_assert(ssa->num_components == 2);
+ ptr->block_index = nir_channel(&b->nb, ssa, 0);
+ ptr->offset = nir_channel(&b->nb, ssa, 1);
+ } else {
+ vtn_assert(ssa->num_components == 1);
+ ptr->block_index = NULL;
+ ptr->offset = ssa;
+ }
+ } else {
+ const struct glsl_type *deref_type = ptr_type->deref->type;
+ if (!vtn_pointer_is_external_block(b, ptr)) {
+ assert(ssa->bit_size == 32 && ssa->num_components == 1);
+ ptr->deref = nir_build_deref_cast(&b->nb, ssa, nir_mode,
+ glsl_get_bare_type(deref_type), 0);
+ } else if (vtn_type_contains_block(b, ptr->type)) {
+ /* This is a pointer to somewhere in an array of blocks, not a
+ * pointer to somewhere inside the block. We squashed it into a
+ * random vector type before so just pick off the first channel and
+ * cast it back to 32 bits.
+ */
+ ptr->block_index = nir_u2u32(&b->nb, nir_channel(&b->nb, ssa, 0));
+ } else {
+ /* This is a pointer to something internal or a pointer inside a
+ * block. It's just a regular cast.
*/
+ ptr->deref = nir_build_deref_cast(&b->nb, ssa, nir_mode,
+ ptr_type->deref->type,
+ ptr_type->stride);
+ ptr->deref->dest.ssa.num_components =
+ glsl_get_vector_elements(ptr_type->type);
+ ptr->deref->dest.ssa.bit_size = glsl_get_bit_size(ptr_type->type);
+ }
+ }
- 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);
- }
+ return ptr;
+}
- 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;
- }
+static bool
+is_per_vertex_inout(const struct vtn_variable *var, gl_shader_stage stage)
+{
+ if (var->patch || !glsl_type_is_array(var->type->type))
+ return false;
+
+ if (var->mode == vtn_variable_mode_input) {
+ return stage == MESA_SHADER_TESS_CTRL ||
+ stage == MESA_SHADER_TESS_EVAL ||
+ stage == MESA_SHADER_GEOMETRY;
+ }
+
+ if (var->mode == vtn_variable_mode_output)
+ return stage == MESA_SHADER_TESS_CTRL;
+
+ return false;
+}
+
+static void
+vtn_create_variable(struct vtn_builder *b, struct vtn_value *val,
+ struct vtn_type *ptr_type, SpvStorageClass storage_class,
+ nir_constant *initializer)
+{
+ vtn_assert(ptr_type->base_type == vtn_base_type_pointer);
+ struct vtn_type *type = ptr_type->deref;
+
+ struct vtn_type *without_array = type;
+ while(glsl_type_is_array(without_array->type))
+ without_array = without_array->array_element;
+
+ enum vtn_variable_mode mode;
+ nir_variable_mode nir_mode;
+ mode = vtn_storage_class_to_mode(b, storage_class, without_array, &nir_mode);
+
+ switch (mode) {
+ case vtn_variable_mode_ubo:
+ /* There's no other way to get vtn_variable_mode_ubo */
+ vtn_assert(without_array->block);
+ b->shader->info.num_ubos++;
+ break;
+ case vtn_variable_mode_ssbo:
+ if (storage_class == SpvStorageClassStorageBuffer &&
+ !without_array->block) {
+ if (b->variable_pointers) {
+ vtn_fail("Variables in the StorageBuffer storage class must "
+ "have a struct type with the Block decoration");
} 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;
+ /* If variable pointers are not present, it's still malformed
+ * SPIR-V but we can parse it and do the right thing anyway.
+ * Since some of the 8-bit storage tests have bugs in this are,
+ * just make it a warning for now.
+ */
+ vtn_warn("Variables in the StorageBuffer storage class must "
+ "have a struct type with the Block decoration");
}
+ }
+ b->shader->info.num_ssbos++;
+ break;
+ case vtn_variable_mode_uniform:
+ if (glsl_type_is_image(without_array->type))
+ b->shader->info.num_images++;
+ else if (glsl_type_is_sampler(without_array->type))
+ b->shader->info.num_textures++;
+ break;
+ case vtn_variable_mode_push_constant:
+ b->shader->num_uniforms = vtn_type_block_size(b, type);
+ break;
+ default:
+ /* No tallying is needed */
+ break;
+ }
- /* For inputs and outputs, we need to grab locations and builtin
- * information from the interface type.
+ struct vtn_variable *var = rzalloc(b, struct vtn_variable);
+ var->type = type;
+ var->mode = mode;
+
+ vtn_assert(val->value_type == vtn_value_type_pointer);
+ val->pointer = vtn_pointer_for_variable(b, var, ptr_type);
+
+ switch (var->mode) {
+ case vtn_variable_mode_function:
+ case vtn_variable_mode_private:
+ case vtn_variable_mode_uniform:
+ /* For these, we create the variable normally */
+ var->var = rzalloc(b->shader, nir_variable);
+ var->var->name = ralloc_strdup(var->var, val->name);
+
+ if (storage_class == SpvStorageClassAtomicCounter) {
+ /* Need to tweak the nir type here as at vtn_handle_type we don't
+ * have the access to storage_class, that is the one that points us
+ * that is an atomic uint.
*/
- vtn_foreach_decoration(b, interface_type->val, var_decoration_cb, var);
- break;
-
- case vtn_variable_mode_param:
- unreachable("Not created through OpVariable");
+ var->var->type = repair_atomic_type(var->type->type);
+ } else {
+ /* Private variables don't have any explicit layout but some layouts
+ * may have leaked through due to type deduplication in the SPIR-V.
+ */
+ var->var->type = glsl_get_bare_type(var->type->type);
}
+ var->var->data.mode = nir_mode;
+ var->var->data.location = -1;
+ var->var->interface_type = NULL;
+ break;
- case vtn_variable_mode_ubo:
- case vtn_variable_mode_ssbo:
- case vtn_variable_mode_push_constant:
- /* These don't need actual variables. */
- break;
+ case vtn_variable_mode_workgroup:
+ if (b->options->lower_workgroup_access_to_offsets) {
+ var->shared_location = -1;
+ } else {
+ /* Create the variable normally */
+ var->var = rzalloc(b->shader, nir_variable);
+ var->var->name = ralloc_strdup(var->var, val->name);
+ /* Workgroup variables don't have any explicit layout but some
+ * layouts may have leaked through due to type deduplication in the
+ * SPIR-V.
+ */
+ var->var->type = glsl_get_bare_type(var->type->type);
+ var->var->data.mode = nir_var_mem_shared;
}
+ 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);
+ case vtn_variable_mode_input:
+ case vtn_variable_mode_output: {
+ /* In order to know whether or not we're a per-vertex inout, we need
+ * the patch qualifier. This means walking the variable decorations
+ * early before we actually create any variables. Not a big deal.
+ *
+ * GLSLang really likes to place decorations in the most interior
+ * thing it possibly can. In particular, if you have a struct, it
+ * will place the patch decorations on the struct members. This
+ * should be handled by the variable splitting below just fine.
+ *
+ * If you have an array-of-struct, things get even more weird as it
+ * will place the patch decorations on the struct even though it's
+ * inside an array and some of the members being patch and others not
+ * makes no sense whatsoever. Since the only sensible thing is for
+ * it to be all or nothing, we'll call it patch if any of the members
+ * are declared patch.
+ */
+ var->patch = false;
+ vtn_foreach_decoration(b, val, var_is_patch_cb, &var->patch);
+ if (glsl_type_is_array(var->type->type) &&
+ glsl_type_is_struct(without_array->type)) {
+ vtn_foreach_decoration(b, vtn_value(b, without_array->id,
+ vtn_value_type_type),
+ var_is_patch_cb, &var->patch);
}
- vtn_foreach_decoration(b, val, var_decoration_cb, var);
+ /* 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.
+ */
- 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.
+ struct vtn_type *interface_type = var->type;
+ if (is_per_vertex_inout(var, b->shader->info.stage)) {
+ /* 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.
*/
- 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;
+ interface_type = var->type->array_element;
}
- 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]);
+ var->var = rzalloc(b->shader, nir_variable);
+ var->var->name = ralloc_strdup(var->var, val->name);
+ /* In Vulkan, shader I/O variables don't have any explicit layout but
+ * some layouts may have leaked through due to type deduplication in
+ * the SPIR-V.
+ */
+ var->var->type = glsl_get_bare_type(var->type->type);
+ var->var->interface_type = interface_type->type;
+ var->var->data.mode = nir_mode;
+ var->var->data.patch = var->patch;
+
+ if (interface_type->base_type == vtn_base_type_struct &&
+ interface_type->block) {
+ /* It's a struct. Set it up as per-member. */
+ var->var->num_members = glsl_get_length(interface_type->type);
+ var->var->members = rzalloc_array(var->var, struct nir_variable_data,
+ var->var->num_members);
+
+ for (unsigned i = 0; i < var->var->num_members; i++) {
+ var->var->members[i].mode = nir_mode;
+ var->var->members[i].patch = var->patch;
}
- } else {
- assert(var->mode == vtn_variable_mode_ubo ||
- var->mode == vtn_variable_mode_ssbo ||
- var->mode == vtn_variable_mode_push_constant);
}
+
+ /* For inputs and outputs, we need to grab locations and builtin
+ * information from the interface type.
+ */
+ vtn_foreach_decoration(b, vtn_value(b, interface_type->id,
+ vtn_value_type_type),
+ var_decoration_cb, var);
+ break;
+ }
+
+ case vtn_variable_mode_ubo:
+ case vtn_variable_mode_ssbo:
+ case vtn_variable_mode_push_constant:
+ case vtn_variable_mode_cross_workgroup:
+ /* These don't need actual variables. */
+ break;
+ }
+
+ if (initializer) {
+ var->var->constant_initializer =
+ nir_constant_clone(initializer, var->var);
+ }
+
+ vtn_foreach_decoration(b, val, var_decoration_cb, var);
+
+ if (var->mode == vtn_variable_mode_uniform) {
+ /* 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.explicit_binding = var->explicit_binding;
+ var->var->data.descriptor_set = var->descriptor_set;
+ var->var->data.index = var->input_attachment_index;
+ var->var->data.offset = var->offset;
+
+ if (glsl_type_is_image(without_array->type))
+ var->var->data.image.format = without_array->image_format;
+ }
+
+ if (var->mode == vtn_variable_mode_function) {
+ vtn_assert(var->var != NULL && var->var->members == NULL);
+ nir_function_impl_add_variable(b->nb.impl, var->var);
+ } else if (var->var) {
+ nir_shader_add_variable(b->shader, var->var);
+ } else {
+ vtn_assert(vtn_pointer_is_external_block(b, val->pointer));
+ }
+}
+
+static void
+vtn_assert_types_equal(struct vtn_builder *b, SpvOp opcode,
+ struct vtn_type *dst_type,
+ struct vtn_type *src_type)
+{
+ if (dst_type->id == src_type->id)
+ return;
+
+ if (vtn_types_compatible(b, dst_type, src_type)) {
+ /* Early versions of GLSLang would re-emit types unnecessarily and you
+ * would end up with OpLoad, OpStore, or OpCopyMemory opcodes which have
+ * mismatched source and destination types.
+ *
+ * https://github.com/KhronosGroup/glslang/issues/304
+ * https://github.com/KhronosGroup/glslang/issues/307
+ * https://bugs.freedesktop.org/show_bug.cgi?id=104338
+ * https://bugs.freedesktop.org/show_bug.cgi?id=104424
+ */
+ vtn_warn("Source and destination types of %s do not have the same "
+ "ID (but are compatible): %u vs %u",
+ spirv_op_to_string(opcode), dst_type->id, src_type->id);
+ return;
+ }
+
+ vtn_fail("Source and destination types of %s do not match: %s vs. %s",
+ spirv_op_to_string(opcode),
+ glsl_get_type_name(dst_type->type),
+ glsl_get_type_name(src_type->type));
+}
+
+void
+vtn_handle_variables(struct vtn_builder *b, SpvOp opcode,
+ const uint32_t *w, unsigned count)
+{
+ switch (opcode) {
+ case SpvOpUndef: {
+ struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_undef);
+ val->type = vtn_value(b, w[1], vtn_value_type_type)->type;
+ break;
+ }
+
+ case SpvOpVariable: {
+ struct vtn_type *ptr_type = vtn_value(b, w[1], vtn_value_type_type)->type;
+
+ struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_pointer);
+
+ SpvStorageClass storage_class = w[3];
+ nir_constant *initializer = NULL;
+ if (count > 4)
+ initializer = vtn_value(b, w[4], vtn_value_type_constant)->constant;
+
+ vtn_create_variable(b, val, ptr_type, storage_class, initializer);
break;
}
case SpvOpAccessChain:
+ case SpvOpPtrAccessChain:
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;
- }
+ struct vtn_access_chain *chain = vtn_access_chain_create(b, count - 4);
+ chain->ptr_as_array = (opcode == SpvOpPtrAccessChain);
- chain = vtn_access_chain_extend(b, base, count - 4);
-
- unsigned idx = base->length;
+ unsigned idx = 0;
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];
+ switch (glsl_get_bit_size(link_val->type->type)) {
+ case 8:
+ chain->link[idx].id = link_val->constant->values[0].i8[0];
+ break;
+ case 16:
+ chain->link[idx].id = link_val->constant->values[0].i16[0];
+ break;
+ case 32:
+ chain->link[idx].id = link_val->constant->values[0].i32[0];
+ break;
+ case 64:
+ chain->link[idx].id = link_val->constant->values[0].i64[0];
+ break;
+ default:
+ vtn_fail("Invalid bit size");
+ }
} else {
chain->link[idx].mode = vtn_access_mode_id;
chain->link[idx].id = w[i];
+
}
idx++;
}
+ struct vtn_type *ptr_type = vtn_value(b, w[1], vtn_value_type_type)->type;
+ 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.
+ */
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->type = base_val->sampled_image->type;
+ val->sampled_image->image =
+ vtn_pointer_dereference(b, base_val->sampled_image->image, chain);
val->sampled_image->sampler = base_val->sampled_image->sampler;
} else {
+ vtn_assert(base_val->value_type == vtn_value_type_pointer);
struct vtn_value *val =
- vtn_push_value(b, w[2], vtn_value_type_access_chain);
- val->access_chain = chain;
+ vtn_push_value(b, w[2], vtn_value_type_pointer);
+ val->pointer = vtn_pointer_dereference(b, base_val->pointer, chain);
+ val->pointer->ptr_type = ptr_type;
}
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);
+ struct vtn_value *dest = vtn_value(b, w[1], vtn_value_type_pointer);
+ struct vtn_value *src = vtn_value(b, w[2], vtn_value_type_pointer);
+
+ vtn_assert_types_equal(b, opcode, dest->type->deref, src->type->deref);
- vtn_variable_copy(b, dest->access_chain, src->access_chain);
+ vtn_variable_copy(b, dest->pointer, src->pointer);
break;
}
case SpvOpLoad: {
- struct vtn_access_chain *src =
- vtn_value(b, w[3], vtn_value_type_access_chain)->access_chain;
+ struct vtn_type *res_type =
+ vtn_value(b, w[1], vtn_value_type_type)->type;
+ struct vtn_value *src_val = vtn_value(b, w[3], vtn_value_type_pointer);
+ struct vtn_pointer *src = src_val->pointer;
- 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;
+ vtn_assert_types_equal(b, opcode, res_type, src_val->type->deref);
+
+ if (glsl_type_is_image(res_type->type) ||
+ glsl_type_is_sampler(res_type->type)) {
+ vtn_push_value(b, w[2], vtn_value_type_pointer)->pointer = src;
return;
}
- struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_ssa);
- val->ssa = vtn_variable_load(b, src);
+ vtn_push_ssa(b, w[2], res_type, 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_value *dest_val = vtn_value(b, w[1], vtn_value_type_pointer);
+ struct vtn_pointer *dest = dest_val->pointer;
+ struct vtn_value *src_val = vtn_untyped_value(b, w[2]);
+
+ /* OpStore requires us to actually have a storage type */
+ vtn_fail_if(dest->type->type == NULL,
+ "Invalid destination type for OpStore");
+
+ if (glsl_get_base_type(dest->type->type) == GLSL_TYPE_BOOL &&
+ glsl_get_base_type(src_val->type->type) == GLSL_TYPE_UINT) {
+ /* Early versions of GLSLang would use uint types for UBOs/SSBOs but
+ * would then store them to a local variable as bool. Work around
+ * the issue by doing an implicit conversion.
+ *
+ * https://github.com/KhronosGroup/glslang/issues/170
+ * https://bugs.freedesktop.org/show_bug.cgi?id=104424
+ */
+ vtn_warn("OpStore of value of type OpTypeInt to a pointer to type "
+ "OpTypeBool. Doing an implicit conversion to work around "
+ "the problem.");
+ struct vtn_ssa_value *bool_ssa =
+ vtn_create_ssa_value(b, dest->type->type);
+ bool_ssa->def = nir_i2b(&b->nb, vtn_ssa_value(b, w[2])->def);
+ vtn_variable_store(b, bool_ssa, dest);
+ break;
+ }
+
+ vtn_assert_types_equal(b, opcode, dest_val->type->deref, src_val->type);
+
+ if (glsl_type_is_sampler(dest->type->type)) {
+ if (b->wa_glslang_179) {
+ vtn_warn("OpStore of a sampler detected. Doing on-the-fly copy "
+ "propagation to workaround the problem.");
+ vtn_assert(dest->var->copy_prop_sampler == NULL);
+ dest->var->copy_prop_sampler =
+ vtn_value(b, w[2], vtn_value_type_pointer)->pointer;
+ } else {
+ vtn_fail("Vulkan does not allow OpStore of a sampler or image.");
+ }
+ break;
+ }
+
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);
+ struct vtn_pointer *ptr =
+ vtn_value(b, w[3], vtn_value_type_pointer)->pointer;
+
+ const uint32_t offset = ptr->var->type->offsets[w[4]];
+ const uint32_t stride = ptr->var->type->members[w[4]]->stride;
+
+ if (!ptr->block_index) {
+ struct vtn_access_chain chain = {
+ .length = 0,
+ };
+ ptr = vtn_ssa_offset_pointer_dereference(b, ptr, &chain);
+ vtn_assert(ptr->block_index);
+ }
nir_intrinsic_instr *instr =
nir_intrinsic_instr_create(b->nb.shader,
nir_intrinsic_get_buffer_size);
- instr->src[0] = nir_src_for_ssa(index);
+ instr->src[0] = nir_src_for_ssa(ptr->block_index);
nir_ssa_dest_init(&instr->instr, &instr->dest, 1, 32, NULL);
nir_builder_instr_insert(&b->nb, &instr->instr);
nir_ssa_def *buf_size = &instr->dest.ssa;
case SpvOpCopyMemorySized:
default:
- unreachable("Unhandled opcode");
+ vtn_fail("Unhandled opcode");
}
}
projects / mesa.git / blobdiff