/*
* Copyright 2018-2021 Arm Limited
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* At your option, you may choose to accept this material under either:
* 1. The Apache License, Version 2.0, found at <http://www.apache.org/licenses/LICENSE-2.0>, or
* 2. The MIT License, found at <http://opensource.org/licenses/MIT>.
*/
#include "spirv_cross_parsed_ir.hpp"
#include <algorithm>
#include <assert.h>
using namespace std;
using namespace spv;
namespace SPIRV_CROSS_NAMESPACE
{
ParsedIR::ParsedIR()
{
// If we move ParsedIR, we need to make sure the pointer stays fixed since the child Variant objects consume a pointer to this group,
// so need an extra pointer here.
pool_group.reset(new ObjectPoolGroup);
pool_group->pools[TypeType].reset(new ObjectPool<SPIRType>);
pool_group->pools[TypeVariable].reset(new ObjectPool<SPIRVariable>);
pool_group->pools[TypeConstant].reset(new ObjectPool<SPIRConstant>);
pool_group->pools[TypeFunction].reset(new ObjectPool<SPIRFunction>);
pool_group->pools[TypeFunctionPrototype].reset(new ObjectPool<SPIRFunctionPrototype>);
pool_group->pools[TypeBlock].reset(new ObjectPool<SPIRBlock>);
pool_group->pools[TypeExtension].reset(new ObjectPool<SPIRExtension>);
pool_group->pools[TypeExpression].reset(new ObjectPool<SPIRExpression>);
pool_group->pools[TypeConstantOp].reset(new ObjectPool<SPIRConstantOp>);
pool_group->pools[TypeCombinedImageSampler].reset(new ObjectPool<SPIRCombinedImageSampler>);
pool_group->pools[TypeAccessChain].reset(new ObjectPool<SPIRAccessChain>);
pool_group->pools[TypeUndef].reset(new ObjectPool<SPIRUndef>);
pool_group->pools[TypeString].reset(new ObjectPool<SPIRString>);
}
// Should have been default-implemented, but need this on MSVC 2013.
ParsedIR::ParsedIR(ParsedIR &&other) SPIRV_CROSS_NOEXCEPT
{
*this = std::move(other);
}
ParsedIR &ParsedIR::operator=(ParsedIR &&other) SPIRV_CROSS_NOEXCEPT
{
if (this != &other)
{
pool_group = std::move(other.pool_group);
spirv = std::move(other.spirv);
meta = std::move(other.meta);
for (int i = 0; i < TypeCount; i++)
ids_for_type[i] = std::move(other.ids_for_type[i]);
ids_for_constant_undef_or_type = std::move(other.ids_for_constant_undef_or_type);
ids_for_constant_or_variable = std::move(other.ids_for_constant_or_variable);
declared_capabilities = std::move(other.declared_capabilities);
declared_extensions = std::move(other.declared_extensions);
block_meta = std::move(other.block_meta);
continue_block_to_loop_header = std::move(other.continue_block_to_loop_header);
entry_points = std::move(other.entry_points);
ids = std::move(other.ids);
addressing_model = other.addressing_model;
memory_model = other.memory_model;
default_entry_point = other.default_entry_point;
source = other.source;
loop_iteration_depth_hard = other.loop_iteration_depth_hard;
loop_iteration_depth_soft = other.loop_iteration_depth_soft;
meta_needing_name_fixup = std::move(other.meta_needing_name_fixup);
load_type_width = std::move(other.load_type_width);
}
return *this;
}
ParsedIR::ParsedIR(const ParsedIR &other)
: ParsedIR()
{
*this = other;
}
ParsedIR &ParsedIR::operator=(const ParsedIR &other)
{
if (this != &other)
{
spirv = other.spirv;
meta = other.meta;
for (int i = 0; i < TypeCount; i++)
ids_for_type[i] = other.ids_for_type[i];
ids_for_constant_undef_or_type = other.ids_for_constant_undef_or_type;
ids_for_constant_or_variable = other.ids_for_constant_or_variable;
declared_capabilities = other.declared_capabilities;
declared_extensions = other.declared_extensions;
block_meta = other.block_meta;
continue_block_to_loop_header = other.continue_block_to_loop_header;
entry_points = other.entry_points;
default_entry_point = other.default_entry_point;
source = other.source;
loop_iteration_depth_hard = other.loop_iteration_depth_hard;
loop_iteration_depth_soft = other.loop_iteration_depth_soft;
addressing_model = other.addressing_model;
memory_model = other.memory_model;
meta_needing_name_fixup = other.meta_needing_name_fixup;
load_type_width = other.load_type_width;
// Very deliberate copying of IDs. There is no default copy constructor, nor a simple default constructor.
// Construct object first so we have the correct allocator set-up, then we can copy object into our new pool group.
ids.clear();
ids.reserve(other.ids.size());
for (size_t i = 0; i < other.ids.size(); i++)
{
ids.emplace_back(pool_group.get());
ids.back() = other.ids[i];
}
}
return *this;
}
void ParsedIR::set_id_bounds(uint32_t bounds)
{
ids.reserve(bounds);
while (ids.size() < bounds)
ids.emplace_back(pool_group.get());
block_meta.resize(bounds);
}
// Roll our own versions of these functions to avoid potential locale shenanigans.
static bool is_alpha(char c)
{
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}
static bool is_numeric(char c)
{
return c >= '0' && c <= '9';
}
static bool is_alphanumeric(char c)
{
return is_alpha(c) || is_numeric(c);
}
static bool is_valid_identifier(const string &name)
{
if (name.empty())
return true;
if (is_numeric(name[0]))
return false;
for (auto c : name)
if (!is_alphanumeric(c) && c != '_')
return false;
bool saw_underscore = false;
// Two underscores in a row is not a valid identifier either.
// Technically reserved, but it's easier to treat it as invalid.
for (auto c : name)
{
bool is_underscore = c == '_';
if (is_underscore && saw_underscore)
return false;
saw_underscore = is_underscore;
}
return true;
}
static bool is_reserved_prefix(const string &name)
{
// Generic reserved identifiers used by the implementation.
return name.compare(0, 3, "gl_", 3) == 0 ||
// Ignore this case for now, might rewrite internal code to always use spv prefix.
//name.compare(0, 11, "SPIRV_Cross", 11) == 0 ||
name.compare(0, 3, "spv", 3) == 0;
}
static bool is_reserved_identifier(const string &name, bool member, bool allow_reserved_prefixes)
{
if (!allow_reserved_prefixes && is_reserved_prefix(name))
return true;
if (member)
{
// Reserved member identifiers come in one form:
// _m[0-9]+$.
if (name.size() < 3)
return false;
if (name.compare(0, 2, "_m", 2) != 0)
return false;
size_t index = 2;
while (index < name.size() && is_numeric(name[index]))
index++;
return index == name.size();
}
else
{
// Reserved non-member identifiers come in two forms:
// _[0-9]+$, used for temporaries which map directly to a SPIR-V ID.
// _[0-9]+_, used for auxillary temporaries which derived from a SPIR-V ID.
if (name.size() < 2)
return false;
if (name[0] != '_' || !is_numeric(name[1]))
return false;
size_t index = 2;
while (index < name.size() && is_numeric(name[index]))
index++;
return index == name.size() || (index < name.size() && name[index] == '_');
}
}
bool ParsedIR::is_globally_reserved_identifier(std::string &str, bool allow_reserved_prefixes)
{
return is_reserved_identifier(str, false, allow_reserved_prefixes);
}
uint32_t ParsedIR::get_spirv_version() const
{
return spirv[1];
}
static string make_unreserved_identifier(const string &name)
{
if (is_reserved_prefix(name))
return "_RESERVED_IDENTIFIER_FIXUP_" + name;
else
return "_RESERVED_IDENTIFIER_FIXUP" + name;
}
void ParsedIR::sanitize_underscores(std::string &str)
{
// Compact adjacent underscores to make it valid.
auto dst = str.begin();
auto src = dst;
bool saw_underscore = false;
while (src != str.end())
{
bool is_underscore = *src == '_';
if (saw_underscore && is_underscore)
{
src++;
}
else
{
if (dst != src)
*dst = *src;
dst++;
src++;
saw_underscore = is_underscore;
}
}
str.erase(dst, str.end());
}
static string ensure_valid_identifier(const string &name)
{
// Functions in glslangValidator are mangled with name(<mangled> stuff.
// Normally, we would never see '(' in any legal identifiers, so just strip them out.
auto str = name.substr(0, name.find('('));
if (str.empty())
return str;
if (is_numeric(str[0]))
str[0] = '_';
for (auto &c : str)
if (!is_alphanumeric(c) && c != '_')
c = '_';
ParsedIR::sanitize_underscores(str);
return str;
}
const string &ParsedIR::get_name(ID id) const
{
auto *m = find_meta(id);
if (m)
return m->decoration.alias;
else
return empty_string;
}
const string &ParsedIR::get_member_name(TypeID id, uint32_t index) const
{
auto *m = find_meta(id);
if (m)
{
if (index >= m->members.size())
return empty_string;
return m->members[index].alias;
}
else
return empty_string;
}
void ParsedIR::sanitize_identifier(std::string &name, bool member, bool allow_reserved_prefixes)
{
if (!is_valid_identifier(name))
name = ensure_valid_identifier(name);
if (is_reserved_identifier(name, member, allow_reserved_prefixes))
name = make_unreserved_identifier(name);
}
void ParsedIR::fixup_reserved_names()
{
for (uint32_t id : meta_needing_name_fixup)
{
// Don't rename remapped variables like 'gl_LastFragDepthARM'.
if (ids[id].get_type() == TypeVariable && get<SPIRVariable>(id).remapped_variable)
continue;
auto &m = meta[id];
sanitize_identifier(m.decoration.alias, false, false);
for (auto &memb : m.members)
sanitize_identifier(memb.alias, true, false);
}
meta_needing_name_fixup.clear();
}
void ParsedIR::set_name(ID id, const string &name)
{
auto &m = meta[id];
m.decoration.alias = name;
if (!is_valid_identifier(name) || is_reserved_identifier(name, false, false))
meta_needing_name_fixup.insert(id);
}
void ParsedIR::set_member_name(TypeID id, uint32_t index, const string &name)
{
auto &m = meta[id];
m.members.resize(max(m.members.size(), size_t(index) + 1));
m.members[index].alias = name;
if (!is_valid_identifier(name) || is_reserved_identifier(name, true, false))
meta_needing_name_fixup.insert(id);
}
void ParsedIR::set_decoration_string(ID id, Decoration decoration, const string &argument)
{
auto &dec = meta[id].decoration;
dec.decoration_flags.set(decoration);
switch (decoration)
{
case DecorationHlslSemanticGOOGLE:
dec.hlsl_semantic = argument;
break;
case DecorationUserTypeGOOGLE:
dec.user_type = argument;
break;
default:
break;
}
}
void ParsedIR::set_decoration(ID id, Decoration decoration, uint32_t argument)
{
auto &dec = meta[id].decoration;
dec.decoration_flags.set(decoration);
switch (decoration)
{
case DecorationBuiltIn:
dec.builtin = true;
dec.builtin_type = static_cast<BuiltIn>(argument);
break;
case DecorationLocation:
dec.location = argument;
break;
case DecorationComponent:
dec.component = argument;
break;
case DecorationOffset:
dec.offset = argument;
break;
case DecorationXfbBuffer:
dec.xfb_buffer = argument;
break;
case DecorationXfbStride:
dec.xfb_stride = argument;
break;
case DecorationStream:
dec.stream = argument;
break;
case DecorationArrayStride:
dec.array_stride = argument;
break;
case DecorationMatrixStride:
dec.matrix_stride = argument;
break;
case DecorationBinding:
dec.binding = argument;
break;
case DecorationDescriptorSet:
dec.set = argument;
break;
case DecorationInputAttachmentIndex:
dec.input_attachment = argument;
break;
case DecorationSpecId:
dec.spec_id = argument;
break;
case DecorationIndex:
dec.index = argument;
break;
case DecorationHlslCounterBufferGOOGLE:
meta[id].hlsl_magic_counter_buffer = argument;
meta[argument].hlsl_is_magic_counter_buffer = true;
break;
case DecorationFPRoundingMode:
dec.fp_rounding_mode = static_cast<FPRoundingMode>(argument);
break;
default:
break;
}
}
void ParsedIR::set_member_decoration(TypeID id, uint32_t index, Decoration decoration, uint32_t argument)
{
auto &m = meta[id];
m.members.resize(max(m.members.size(), size_t(index) + 1));
auto &dec = m.members[index];
dec.decoration_flags.set(decoration);
switch (decoration)
{
case DecorationBuiltIn:
dec.builtin = true;
dec.builtin_type = static_cast<BuiltIn>(argument);
break;
case DecorationLocation:
dec.location = argument;
break;
case DecorationComponent:
dec.component = argument;
break;
case DecorationBinding:
dec.binding = argument;
break;
case DecorationOffset:
dec.offset = argument;
break;
case DecorationXfbBuffer:
dec.xfb_buffer = argument;
break;
case DecorationXfbStride:
dec.xfb_stride = argument;
break;
case DecorationStream:
dec.stream = argument;
break;
case DecorationSpecId:
dec.spec_id = argument;
break;
case DecorationMatrixStride:
dec.matrix_stride = argument;
break;
case DecorationIndex:
dec.index = argument;
break;
default:
break;
}
}
// Recursively marks any constants referenced by the specified constant instruction as being used
// as an array length. The id must be a constant instruction (SPIRConstant or SPIRConstantOp).
void ParsedIR::mark_used_as_array_length(ID id)
{
switch (ids[id].get_type())
{
case TypeConstant:
get<SPIRConstant>(id).is_used_as_array_length = true;
break;
case TypeConstantOp:
{
auto &cop = get<SPIRConstantOp>(id);
if (cop.opcode == OpCompositeExtract)
mark_used_as_array_length(cop.arguments[0]);
else if (cop.opcode == OpCompositeInsert)
{
mark_used_as_array_length(cop.arguments[0]);
mark_used_as_array_length(cop.arguments[1]);
}
else
for (uint32_t arg_id : cop.arguments)
mark_used_as_array_length(arg_id);
break;
}
case TypeUndef:
break;
default:
assert(0);
}
}
Bitset ParsedIR::get_buffer_block_type_flags(const SPIRType &type) const
{
if (type.member_types.empty())
return {};
Bitset all_members_flags = get_member_decoration_bitset(type.self, 0);
for (uint32_t i = 1; i < uint32_t(type.member_types.size()); i++)
all_members_flags.merge_and(get_member_decoration_bitset(type.self, i));
return all_members_flags;
}
Bitset ParsedIR::get_buffer_block_flags(const SPIRVariable &var) const
{
auto &type = get<SPIRType>(var.basetype);
assert(type.basetype == SPIRType::Struct);
// Some flags like non-writable, non-readable are actually found
// as member decorations. If all members have a decoration set, propagate
// the decoration up as a regular variable decoration.
Bitset base_flags;
auto *m = find_meta(var.self);
if (m)
base_flags = m->decoration.decoration_flags;
if (type.member_types.empty())
return base_flags;
auto all_members_flags = get_buffer_block_type_flags(type);
base_flags.merge_or(all_members_flags);
return base_flags;
}
const Bitset &ParsedIR::get_member_decoration_bitset(TypeID id, uint32_t index) const
{
auto *m = find_meta(id);
if (m)
{
if (index >= m->members.size())
return cleared_bitset;
return m->members[index].decoration_flags;
}
else
return cleared_bitset;
}
bool ParsedIR::has_decoration(ID id, Decoration decoration) const
{
return get_decoration_bitset(id).get(decoration);
}
uint32_t ParsedIR::get_decoration(ID id, Decoration decoration) const
{
auto *m = find_meta(id);
if (!m)
return 0;
auto &dec = m->decoration;
if (!dec.decoration_flags.get(decoration))
return 0;
switch (decoration)
{
case DecorationBuiltIn:
return dec.builtin_type;
case DecorationLocation:
return dec.location;
case DecorationComponent:
return dec.component;
case DecorationOffset:
return dec.offset;
case DecorationXfbBuffer:
return dec.xfb_buffer;
case DecorationXfbStride:
return dec.xfb_stride;
case DecorationStream:
return dec.stream;
case DecorationBinding:
return dec.binding;
case DecorationDescriptorSet:
return dec.set;
case DecorationInputAttachmentIndex:
return dec.input_attachment;
case DecorationSpecId:
return dec.spec_id;
case DecorationArrayStride:
return dec.array_stride;
case DecorationMatrixStride:
return dec.matrix_stride;
case DecorationIndex:
return dec.index;
case DecorationFPRoundingMode:
return dec.fp_rounding_mode;
default:
return 1;
}
}
const string &ParsedIR::get_decoration_string(ID id, Decoration decoration) const
{
auto *m = find_meta(id);
if (!m)
return empty_string;
auto &dec = m->decoration;
if (!dec.decoration_flags.get(decoration))
return empty_string;
switch (decoration)
{
case DecorationHlslSemanticGOOGLE:
return dec.hlsl_semantic;
case DecorationUserTypeGOOGLE:
return dec.user_type;
default:
return empty_string;
}
}
void ParsedIR::unset_decoration(ID id, Decoration decoration)
{
auto &dec = meta[id].decoration;
dec.decoration_flags.clear(decoration);
switch (decoration)
{
case DecorationBuiltIn:
dec.builtin = false;
break;
case DecorationLocation:
dec.location = 0;
break;
case DecorationComponent:
dec.component = 0;
break;
case DecorationOffset:
dec.offset = 0;
break;
case DecorationXfbBuffer:
dec.xfb_buffer = 0;
break;
case DecorationXfbStride:
dec.xfb_stride = 0;
break;
case DecorationStream:
dec.stream = 0;
break;
case DecorationBinding:
dec.binding = 0;
break;
case DecorationDescriptorSet:
dec.set = 0;
break;
case DecorationInputAttachmentIndex:
dec.input_attachment = 0;
break;
case DecorationSpecId:
dec.spec_id = 0;
break;
case DecorationHlslSemanticGOOGLE:
dec.hlsl_semantic.clear();
break;
case DecorationFPRoundingMode:
dec.fp_rounding_mode = FPRoundingModeMax;
break;
case DecorationHlslCounterBufferGOOGLE:
{
auto &counter = meta[id].hlsl_magic_counter_buffer;
if (counter)
{
meta[counter].hlsl_is_magic_counter_buffer = false;
counter = 0;
}
break;
}
default:
break;
}
}
bool ParsedIR::has_member_decoration(TypeID id, uint32_t index, Decoration decoration) const
{
return get_member_decoration_bitset(id, index).get(decoration);
}
uint32_t ParsedIR::get_member_decoration(TypeID id, uint32_t index, Decoration decoration) const
{
auto *m = find_meta(id);
if (!m)
return 0;
if (index >= m->members.size())
return 0;
auto &dec = m->members[index];
if (!dec.decoration_flags.get(decoration))
return 0;
switch (decoration)
{
case DecorationBuiltIn:
return dec.builtin_type;
case DecorationLocation:
return dec.location;
case DecorationComponent:
return dec.component;
case DecorationBinding:
return dec.binding;
case DecorationOffset:
return dec.offset;
case DecorationXfbBuffer:
return dec.xfb_buffer;
case DecorationXfbStride:
return dec.xfb_stride;
case DecorationStream:
return dec.stream;
case DecorationSpecId:
return dec.spec_id;
case DecorationMatrixStride:
return dec.matrix_stride;
case DecorationIndex:
return dec.index;
default:
return 1;
}
}
const Bitset &ParsedIR::get_decoration_bitset(ID id) const
{
auto *m = find_meta(id);
if (m)
{
auto &dec = m->decoration;
return dec.decoration_flags;
}
else
return cleared_bitset;
}
void ParsedIR::set_member_decoration_string(TypeID id, uint32_t index, Decoration decoration, const string &argument)
{
auto &m = meta[id];
m.members.resize(max(m.members.size(), size_t(index) + 1));
auto &dec = meta[id].members[index];
dec.decoration_flags.set(decoration);
switch (decoration)
{
case DecorationHlslSemanticGOOGLE:
dec.hlsl_semantic = argument;
break;
default:
break;
}
}
const string &ParsedIR::get_member_decoration_string(TypeID id, uint32_t index, Decoration decoration) const
{
auto *m = find_meta(id);
if (m)
{
if (!has_member_decoration(id, index, decoration))
return empty_string;
auto &dec = m->members[index];
switch (decoration)
{
case DecorationHlslSemanticGOOGLE:
return dec.hlsl_semantic;
default:
return empty_string;
}
}
else
return empty_string;
}
void ParsedIR::unset_member_decoration(TypeID id, uint32_t index, Decoration decoration)
{
auto &m = meta[id];
if (index >= m.members.size())
return;
auto &dec = m.members[index];
dec.decoration_flags.clear(decoration);
switch (decoration)
{
case DecorationBuiltIn:
dec.builtin = false;
break;
case DecorationLocation:
dec.location = 0;
break;
case DecorationComponent:
dec.component = 0;
break;
case DecorationOffset:
dec.offset = 0;
break;
case DecorationXfbBuffer:
dec.xfb_buffer = 0;
break;
case DecorationXfbStride:
dec.xfb_stride = 0;
break;
case DecorationStream:
dec.stream = 0;
break;
case DecorationSpecId:
dec.spec_id = 0;
break;
case DecorationHlslSemanticGOOGLE:
dec.hlsl_semantic.clear();
break;
default:
break;
}
}
uint32_t ParsedIR::increase_bound_by(uint32_t incr_amount)
{
auto curr_bound = ids.size();
auto new_bound = curr_bound + incr_amount;
ids.reserve(ids.size() + incr_amount);
for (uint32_t i = 0; i < incr_amount; i++)
ids.emplace_back(pool_group.get());
block_meta.resize(new_bound);
return uint32_t(curr_bound);
}
void ParsedIR::remove_typed_id(Types type, ID id)
{
auto &type_ids = ids_for_type[type];
type_ids.erase(remove(begin(type_ids), end(type_ids), id), end(type_ids));
}
void ParsedIR::reset_all_of_type(Types type)
{
for (auto &id : ids_for_type[type])
if (ids[id].get_type() == type)
ids[id].reset();
ids_for_type[type].clear();
}
void ParsedIR::add_typed_id(Types type, ID id)
{
if (loop_iteration_depth_hard != 0)
SPIRV_CROSS_THROW("Cannot add typed ID while looping over it.");
if (loop_iteration_depth_soft != 0)
{
if (!ids[id].empty())
SPIRV_CROSS_THROW("Cannot override IDs when loop is soft locked.");
return;
}
if (ids[id].empty() || ids[id].get_type() != type)
{
switch (type)
{
case TypeConstant:
ids_for_constant_or_variable.push_back(id);
ids_for_constant_undef_or_type.push_back(id);
break;
case TypeVariable:
ids_for_constant_or_variable.push_back(id);
break;
case TypeType:
case TypeConstantOp:
case TypeUndef:
ids_for_constant_undef_or_type.push_back(id);
break;
default:
break;
}
}
if (ids[id].empty())
{
ids_for_type[type].push_back(id);
}
else if (ids[id].get_type() != type)
{
remove_typed_id(ids[id].get_type(), id);
ids_for_type[type].push_back(id);
}
}
const Meta *ParsedIR::find_meta(ID id) const
{
auto itr = meta.find(id);
if (itr != end(meta))
return &itr->second;
else
return nullptr;
}
Meta *ParsedIR::find_meta(ID id)
{
auto itr = meta.find(id);
if (itr != end(meta))
return &itr->second;
else
return nullptr;
}
ParsedIR::LoopLock ParsedIR::create_loop_hard_lock() const
{
return ParsedIR::LoopLock(&loop_iteration_depth_hard);
}
ParsedIR::LoopLock ParsedIR::create_loop_soft_lock() const
{
return ParsedIR::LoopLock(&loop_iteration_depth_soft);
}
ParsedIR::LoopLock::~LoopLock()
{
if (lock)
(*lock)--;
}
ParsedIR::LoopLock::LoopLock(uint32_t *lock_)
: lock(lock_)
{
if (lock)
(*lock)++;
}
ParsedIR::LoopLock::LoopLock(LoopLock &&other) SPIRV_CROSS_NOEXCEPT
{
*this = std::move(other);
}
ParsedIR::LoopLock &ParsedIR::LoopLock::operator=(LoopLock &&other) SPIRV_CROSS_NOEXCEPT
{
if (lock)
(*lock)--;
lock = other.lock;
other.lock = nullptr;
return *this;
}
void ParsedIR::make_constant_null(uint32_t id, uint32_t type, bool add_to_typed_id_set)
{
auto &constant_type = get<SPIRType>(type);
if (constant_type.pointer)
{
if (add_to_typed_id_set)
add_typed_id(TypeConstant, id);
auto &constant = variant_set<SPIRConstant>(ids[id], type);
constant.self = id;
constant.make_null(constant_type);
}
else if (!constant_type.array.empty())
{
assert(constant_type.parent_type);
uint32_t parent_id = increase_bound_by(1);
make_constant_null(parent_id, constant_type.parent_type, add_to_typed_id_set);
if (!constant_type.array_size_literal.back())
SPIRV_CROSS_THROW("Array size of OpConstantNull must be a literal.");
SmallVector<uint32_t> elements(constant_type.array.back());
for (uint32_t i = 0; i < constant_type.array.back(); i++)
elements[i] = parent_id;
if (add_to_typed_id_set)
add_typed_id(TypeConstant, id);
variant_set<SPIRConstant>(ids[id], type, elements.data(), uint32_t(elements.size()), false).self = id;
}
else if (!constant_type.member_types.empty())
{
uint32_t member_ids = increase_bound_by(uint32_t(constant_type.member_types.size()));
SmallVector<uint32_t> elements(constant_type.member_types.size());
for (uint32_t i = 0; i < constant_type.member_types.size(); i++)
{
make_constant_null(member_ids + i, constant_type.member_types[i], add_to_typed_id_set);
elements[i] = member_ids + i;
}
if (add_to_typed_id_set)
add_typed_id(TypeConstant, id);
variant_set<SPIRConstant>(ids[id], type, elements.data(), uint32_t(elements.size()), false).self = id;
}
else
{
if (add_to_typed_id_set)
add_typed_id(TypeConstant, id);
auto &constant = variant_set<SPIRConstant>(ids[id], type);
constant.self = id;
constant.make_null(constant_type);
}
}
} // namespace SPIRV_CROSS_NAMESPACE
Codebase Browser
godot