#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_create(struct vtn_builder *b, unsigned length)
return chain;
}
-static struct vtn_access_chain *
-vtn_access_chain_extend(struct vtn_builder *b, struct vtn_access_chain *old,
- unsigned new_ids)
-{
- struct vtn_access_chain *chain;
-
- unsigned old_len = old ? old->length : 0;
- chain = vtn_access_chain_create(b, old_len + new_ids);
-
- for (unsigned i = 0; i < old_len; i++)
- chain->link[i] = old->link[i];
-
- return chain;
-}
-
-static bool
+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 ||
+ 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);
b->options->lower_workgroup_access_to_offsets);
}
-/* Dereference the given base pointer by the access chain */
-static struct vtn_pointer *
-vtn_access_chain_pointer_dereference(struct vtn_builder *b,
- struct vtn_pointer *base,
- struct vtn_access_chain *deref_chain)
-{
- struct vtn_access_chain *chain =
- vtn_access_chain_extend(b, base->chain, deref_chain->length);
- struct vtn_type *type = base->type;
- enum gl_access_qualifier access = base->access;
-
- /* OpPtrAccessChain is only allowed on things which support variable
- * pointers. For everything else, the client is expected to just pass us
- * the right access chain.
- */
- vtn_assert(!deref_chain->ptr_as_array);
-
- unsigned start = base->chain ? base->chain->length : 0;
- for (unsigned i = 0; i < deref_chain->length; i++) {
- chain->link[start + i] = deref_chain->link[i];
-
- if (glsl_type_is_struct(type->type)) {
- vtn_assert(deref_chain->link[i].mode == vtn_access_mode_literal);
- type = type->members[deref_chain->link[i].id];
- } else {
- type = type->array_element;
- }
-
- access |= type->access;
- }
-
- struct vtn_pointer *ptr = rzalloc(b, struct vtn_pointer);
- ptr->mode = base->mode;
- ptr->type = type;
- ptr->var = base->var;
- ptr->deref = base->deref;
- ptr->chain = chain;
- ptr->access = access;
-
- return ptr;
-}
-
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)
{
vtn_assert(stride > 0);
if (link.mode == vtn_access_mode_literal) {
- return nir_imm_int(&b->nb, link.id * stride);
- } else if (stride == 1) {
- nir_ssa_def *ssa = vtn_ssa_value(b, link.id)->def;
- if (ssa->bit_size != 32)
- ssa = nir_u2u32(&b->nb, ssa);
- return ssa;
+ return nir_imm_intN_t(&b->nb, link.id * stride, bit_size);
} else {
- nir_ssa_def *src0 = vtn_ssa_value(b, link.id)->def;
- if (src0->bit_size != 32)
- src0 = nir_u2u32(&b->nb, src0);
- return nir_imul_imm(&b->nb, src0, 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");
}
}
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);
}
static nir_ssa_def *
-vtn_resource_reindex(struct vtn_builder *b, nir_ssa_def *base_index,
- nir_ssa_def *offset_index)
+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;
+}
+
+/* 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 = 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)) {
+ 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;
+ }
+
+ 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;
+}
+
static struct vtn_pointer *
vtn_ssa_offset_pointer_dereference(struct vtn_builder *b,
struct vtn_pointer *base,
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);
+ vtn_access_link_as_ssa(b, deref_chain->link[0], 1, 32);
idx++;
/* This consumes a level of type */
type = type->array_element;
} 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);
+ 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;
*/
vtn_assert(deref_chain->length >= 1);
nir_ssa_def *offset_index =
- vtn_access_link_as_ssa(b, deref_chain->link[0], 1);
+ vtn_access_link_as_ssa(b, deref_chain->link[0], 1, 32);
idx++;
- block_index = vtn_resource_reindex(b, block_index, offset_index);
+ block_index = vtn_resource_reindex(b, base->mode,
+ block_index, offset_index);
}
}
nir_ssa_def *elem_offset =
vtn_access_link_as_ssa(b, deref_chain->link[idx],
- base->ptr_type->stride);
+ base->ptr_type->stride, offset->bit_size);
offset = nir_iadd(&b->nb, offset, elem_offset);
idx++;
}
case GLSL_TYPE_BOOL:
case GLSL_TYPE_ARRAY: {
nir_ssa_def *elem_offset =
- vtn_access_link_as_ssa(b, deref_chain->link[idx], type->stride);
+ 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;
if (vtn_pointer_uses_ssa_offset(b, base)) {
return vtn_ssa_offset_pointer_dereference(b, base, deref_chain);
} else {
- return vtn_access_chain_pointer_dereference(b, base, deref_chain);
+ return vtn_nir_deref_pointer_dereference(b, base, deref_chain);
}
}
const struct glsl_type *atomic =
repair_atomic_type(glsl_get_array_element(type));
- return glsl_array_type(atomic, glsl_get_length(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)
{
- /* 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_deref_instr *tail;
- if (ptr->deref) {
- tail = ptr->deref;
- } else {
- assert(ptr->var && ptr->var->var);
- tail = nir_build_deref_var(&b->nb, ptr->var->var);
+ 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);
}
- /* Raw variable access */
- if (!ptr->chain)
- return tail;
-
- struct vtn_access_chain *chain = ptr->chain;
- vtn_assert(chain);
-
- for (unsigned i = 0; i < chain->length; i++) {
- if (glsl_type_is_struct(tail->type)) {
- vtn_assert(chain->link[i].mode == vtn_access_mode_literal);
- unsigned idx = chain->link[i].id;
- tail = nir_build_deref_struct(&b->nb, tail, idx);
- } else {
- nir_ssa_def *index;
- if (chain->link[i].mode == vtn_access_mode_literal) {
- index = nir_imm_int(&b->nb, chain->link[i].id);
- } else {
- vtn_assert(chain->link[i].mode == vtn_access_mode_id);
- index = vtn_ssa_value(b, chain->link[i].id)->def;
- }
- tail = nir_build_deref_array(&b->nb, tail, index);
- }
+ 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);
}
- return tail;
+ return ptr->deref;
}
static void
if (src_tail != src) {
val->type = src->type;
- nir_const_value *const_index = nir_src_as_const_value(src->arr.index);
- if (const_index)
- val->def = vtn_vector_extract(b, val->def, const_index->u32[0]);
+ 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, src->arr.index.ssa);
}
struct vtn_ssa_value *val = vtn_create_ssa_value(b, dest_tail->type);
_vtn_local_load_store(b, true, dest_tail, val);
- nir_const_value *const_index = nir_src_as_const_value(dest->arr.index);
- if (const_index)
+ if (nir_src_is_const(dest->arr.index))
val->def = vtn_vector_insert(b, val->def, src->def,
- const_index->u32[0]);
+ nir_src_as_uint(dest->arr.index));
else
val->def = vtn_vector_insert_dynamic(b, val->def, src->def,
dest->arr.index.ssa);
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);
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);
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;
}
case GLSL_TYPE_FLOAT16:
case GLSL_TYPE_BOOL:
case GLSL_TYPE_DOUBLE:
- /* 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_pointer_to_deref(b, ptr));
- } else {
- vtn_local_store(b, *inout, vtn_pointer_to_deref(b, ptr));
+ 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_ssa_value *
vtn_variable_load(struct vtn_builder *b, struct vtn_pointer *src)
{
- if (vtn_pointer_is_external_block(b, src)) {
+ if (vtn_pointer_uses_ssa_offset(b, src)) {
return vtn_block_load(b, src);
} else {
struct vtn_ssa_value *val = NULL;
vtn_variable_store(struct vtn_builder *b, struct vtn_ssa_value *src,
struct vtn_pointer *dest)
{
- if (vtn_pointer_is_external_block(b, dest)) {
+ 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);
case SpvDecorationFPRoundingMode:
case SpvDecorationFPFastMathMode:
case SpvDecorationAlignment:
- vtn_warn("Decoration 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:
if (val->value_type == vtn_value_type_pointer) {
assert(val->pointer->var == void_var);
- assert(val->pointer->chain == NULL);
assert(member == -1);
} else {
assert(val->value_type == vtn_value_type_type);
} else {
if (vtn_var->var) {
if (vtn_var->var->num_members == 0) {
- assert(member == -1);
- apply_var_decoration(b, &vtn_var->var->data, dec);
+ /* 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);
case SpvStorageClassUniform:
if (interface_type->block) {
mode = vtn_variable_mode_ubo;
- nir_mode = 0;
+ nir_mode = nir_var_mem_ubo;
} else if (interface_type->buffer_block) {
mode = vtn_variable_mode_ssbo;
- nir_mode = 0;
+ nir_mode = nir_var_mem_ssbo;
} else {
/* Default-block uniforms, coming from gl_spirv */
mode = vtn_variable_mode_uniform;
break;
case SpvStorageClassStorageBuffer:
mode = vtn_variable_mode_ssbo;
- nir_mode = 0;
+ nir_mode = nir_var_mem_ssbo;
break;
case SpvStorageClassUniformConstant:
mode = vtn_variable_mode_uniform;
nir_mode = nir_var_shader_out;
break;
case SpvStorageClassPrivate:
- mode = vtn_variable_mode_global;
- nir_mode = nir_var_global;
+ mode = vtn_variable_mode_private;
+ nir_mode = nir_var_shader_temp;
break;
case SpvStorageClassFunction:
- mode = vtn_variable_mode_local;
- nir_mode = nir_var_local;
+ mode = vtn_variable_mode_function;
+ nir_mode = nir_var_function_temp;
break;
case SpvStorageClassWorkgroup:
mode = vtn_variable_mode_workgroup;
- nir_mode = nir_var_shared;
+ 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");
return ptr->offset;
}
} else {
- return &vtn_pointer_to_deref(b, ptr)->dest.ssa;
+ 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);
+
+ 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;
+ }
}
}
ptr->type = ptr_type->deref;
ptr->ptr_type = ptr_type;
- if (ptr->mode == vtn_variable_mode_ubo ||
- ptr->mode == vtn_variable_mode_ssbo) {
- /* This pointer type needs to have actual storage */
- vtn_assert(ptr_type->type);
- vtn_assert(ssa->num_components == 2);
- ptr->block_index = nir_channel(&b->nb, ssa, 0);
- ptr->offset = nir_channel(&b->nb, ssa, 1);
- } else if (ptr->mode == vtn_variable_mode_workgroup ||
- ptr->mode == vtn_variable_mode_push_constant) {
+ 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;
+ }
+ }
+
+ if (vtn_pointer_uses_ssa_offset(b, ptr)) {
/* This pointer type needs to have actual storage */
vtn_assert(ptr_type->type);
- vtn_assert(ssa->num_components == 1);
- ptr->block_index = NULL;
- ptr->offset = ssa;
+ 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 {
- ptr->deref = nir_build_deref_cast(&b->nb, ssa, nir_mode,
- ptr_type->deref->type);
+ 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);
+ }
}
return ptr;
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 {
+ /* 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:
val->pointer = vtn_pointer_for_variable(b, var, ptr_type);
switch (var->mode) {
- case vtn_variable_mode_local:
- case vtn_variable_mode_global:
+ 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);
- /* 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.
- */
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.
+ */
var->var->type = repair_atomic_type(var->type->type);
} else {
- var->var->type = var->type->type;
+ /* 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;
/* 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_var_shared;
+ /* 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;
var->var = rzalloc(b->shader, nir_variable);
var->var->name = ralloc_strdup(var->var, val->name);
- var->var->type = var->type->type;
+ /* 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 (glsl_type_is_struct(interface_type->type)) {
+ 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,
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;
}
var->var->data.image.format = without_array->image_format;
}
- if (var->mode == vtn_variable_mode_local) {
+ 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) {
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->values[0].u32[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];
vtn_assert_types_equal(b, opcode, dest_val->type->deref, src_val->type);
if (glsl_type_is_sampler(dest->type->type)) {
- 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;
+ 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;
}
projects / mesa.git / blobdiff