diff options
Diffstat (limited to 'src/3rdparty/SPIRV-Cross/spirv_reflect.cpp')
| -rw-r--r-- | src/3rdparty/SPIRV-Cross/spirv_reflect.cpp | 594 |
1 files changed, 594 insertions, 0 deletions
diff --git a/src/3rdparty/SPIRV-Cross/spirv_reflect.cpp b/src/3rdparty/SPIRV-Cross/spirv_reflect.cpp new file mode 100644 index 0000000..c6cd3be --- /dev/null +++ b/src/3rdparty/SPIRV-Cross/spirv_reflect.cpp @@ -0,0 +1,594 @@ +/* + * Copyright 2018-2019 Bradley Austin Davis + * + * 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. + */ + +#include "spirv_reflect.hpp" +#include "spirv_glsl.hpp" +#include <iomanip> + +using namespace spv; +using namespace spirv_cross; +using namespace std; + +namespace simple_json +{ +enum class Type +{ + Object, + Array, +}; + +using State = std::pair<Type, bool>; +using Stack = std::stack<State>; + +class Stream +{ + Stack stack; + std::ostringstream buffer; + uint32_t indent{ 0 }; + +public: + void begin_json_object(); + void end_json_object(); + void emit_json_key(const std::string &key); + void emit_json_key_value(const std::string &key, const std::string &value); + void emit_json_key_value(const std::string &key, bool value); + void emit_json_key_value(const std::string &key, uint32_t value); + void emit_json_key_value(const std::string &key, int32_t value); + void emit_json_key_value(const std::string &key, float value); + void emit_json_key_object(const std::string &key); + void emit_json_key_array(const std::string &key); + + void begin_json_array(); + void end_json_array(); + void emit_json_array_value(const std::string &value); + void emit_json_array_value(uint32_t value); + + std::string str() const + { + return buffer.str(); + } + +private: + inline void statement_indent() + { + for (uint32_t i = 0; i < indent; i++) + buffer << " "; + } + + template <typename T> + inline void statement_inner(T &&t) + { + buffer << std::forward<T>(t); + } + + template <typename T, typename... Ts> + inline void statement_inner(T &&t, Ts &&... ts) + { + buffer << std::forward<T>(t); + statement_inner(std::forward<Ts>(ts)...); + } + + template <typename... Ts> + inline void statement(Ts &&... ts) + { + statement_indent(); + statement_inner(std::forward<Ts>(ts)...); + buffer << '\n'; + } + + template <typename... Ts> + void statement_no_return(Ts &&... ts) + { + statement_indent(); + statement_inner(std::forward<Ts>(ts)...); + } +}; +} // namespace simple_json + +using namespace simple_json; + +// Hackery to emit JSON without using nlohmann/json C++ library (which requires a +// higher level of compiler compliance than is required by SPIRV-Cross +void Stream::begin_json_array() +{ + if (!stack.empty() && stack.top().second) + { + statement_inner(",\n"); + } + statement("["); + ++indent; + stack.emplace(Type::Array, false); +} + +void Stream::end_json_array() +{ + if (stack.empty() || stack.top().first != Type::Array) + SPIRV_CROSS_THROW("Invalid JSON state"); + if (stack.top().second) + { + statement_inner("\n"); + } + --indent; + statement_no_return("]"); + stack.pop(); + if (!stack.empty()) + { + stack.top().second = true; + } +} + +void Stream::emit_json_array_value(const std::string &value) +{ + if (stack.empty() || stack.top().first != Type::Array) + SPIRV_CROSS_THROW("Invalid JSON state"); + + if (stack.top().second) + statement_inner(",\n"); + + statement_no_return("\"", value, "\""); + stack.top().second = true; +} + +void Stream::emit_json_array_value(uint32_t value) +{ + if (stack.empty() || stack.top().first != Type::Array) + SPIRV_CROSS_THROW("Invalid JSON state"); + if (stack.top().second) + statement_inner(",\n"); + statement_no_return(std::to_string(value)); + stack.top().second = true; +} + +void Stream::begin_json_object() +{ + if (!stack.empty() && stack.top().second) + { + statement_inner(",\n"); + } + statement("{"); + ++indent; + stack.emplace(Type::Object, false); +} + +void Stream::end_json_object() +{ + if (stack.empty() || stack.top().first != Type::Object) + SPIRV_CROSS_THROW("Invalid JSON state"); + if (stack.top().second) + { + statement_inner("\n"); + } + --indent; + statement_no_return("}"); + stack.pop(); + if (!stack.empty()) + { + stack.top().second = true; + } +} + +void Stream::emit_json_key(const std::string &key) +{ + if (stack.empty() || stack.top().first != Type::Object) + SPIRV_CROSS_THROW("Invalid JSON state"); + + if (stack.top().second) + statement_inner(",\n"); + statement_no_return("\"", key, "\" : "); + stack.top().second = true; +} + +void Stream::emit_json_key_value(const std::string &key, const std::string &value) +{ + emit_json_key(key); + statement_inner("\"", value, "\""); +} + +void Stream::emit_json_key_value(const std::string &key, uint32_t value) +{ + emit_json_key(key); + statement_inner(value); +} + +void Stream::emit_json_key_value(const std::string &key, int32_t value) +{ + emit_json_key(key); + statement_inner(value); +} + +void Stream::emit_json_key_value(const std::string &key, float value) +{ + emit_json_key(key); + statement_inner(value); +} + +void Stream::emit_json_key_value(const std::string &key, bool value) +{ + emit_json_key(key); + statement_inner(value ? "true" : "false"); +} + +void Stream::emit_json_key_object(const std::string &key) +{ + emit_json_key(key); + statement_inner("{\n"); + ++indent; + stack.emplace(Type::Object, false); +} + +void Stream::emit_json_key_array(const std::string &key) +{ + emit_json_key(key); + statement_inner("[\n"); + ++indent; + stack.emplace(Type::Array, false); +} + +void CompilerReflection::set_format(const std::string &format) +{ + if (format != "json") + { + SPIRV_CROSS_THROW("Unsupported format"); + } +} + +string CompilerReflection::compile() +{ + // Move constructor for this type is broken on GCC 4.9 ... + json_stream = std::make_shared<simple_json::Stream>(); + json_stream->begin_json_object(); + emit_entry_points(); + emit_types(); + emit_resources(); + emit_specialization_constants(); + json_stream->end_json_object(); + return json_stream->str(); +} + +void CompilerReflection::emit_types() +{ + bool emitted_open_tag = false; + + ir.for_each_typed_id<SPIRType>([&](uint32_t, SPIRType &type) { + if (type.basetype == SPIRType::Struct && !type.pointer && type.array.empty()) + emit_type(type, emitted_open_tag); + }); + + if (emitted_open_tag) + { + json_stream->end_json_object(); + } +} + +void CompilerReflection::emit_type(const SPIRType &type, bool &emitted_open_tag) +{ + auto name = type_to_glsl(type); + + if (type.type_alias != 0) + return; + + if (!emitted_open_tag) + { + json_stream->emit_json_key_object("types"); + emitted_open_tag = true; + } + json_stream->emit_json_key_object("_" + std::to_string(type.self)); + json_stream->emit_json_key_value("name", name); + json_stream->emit_json_key_array("members"); + // FIXME ideally we'd like to emit the size of a structure as a + // convenience to people parsing the reflected JSON. The problem + // is that there's no implicit size for a type. It's final size + // will be determined by the top level declaration in which it's + // included. So there might be one size for the struct if it's + // included in a std140 uniform block and another if it's included + // in a std430 uniform block. + // The solution is to include *all* potential sizes as a map of + // layout type name to integer, but that will probably require + // some additional logic being written in this class, or in the + // parent CompilerGLSL class. + auto size = type.member_types.size(); + for (uint32_t i = 0; i < size; ++i) + { + emit_type_member(type, i); + } + json_stream->end_json_array(); + json_stream->end_json_object(); +} + +void CompilerReflection::emit_type_member(const SPIRType &type, uint32_t index) +{ + auto &membertype = get<SPIRType>(type.member_types[index]); + json_stream->begin_json_object(); + auto name = to_member_name(type, index); + // FIXME we'd like to emit the offset of each member, but such offsets are + // context dependent. See the comment above regarding structure sizes + json_stream->emit_json_key_value("name", name); + if (membertype.basetype == SPIRType::Struct) + { + json_stream->emit_json_key_value("type", "_" + std::to_string(membertype.self)); + } + else + { + json_stream->emit_json_key_value("type", type_to_glsl(membertype)); + } + emit_type_member_qualifiers(type, index); + json_stream->end_json_object(); +} + +void CompilerReflection::emit_type_array(const SPIRType &type) +{ + if (!type.array.empty()) + { + json_stream->emit_json_key_array("array"); + // Note that we emit the zeros here as a means of identifying + // unbounded arrays. This is necessary as otherwise there would + // be no way of differentiating between float[4] and float[4][] + for (const auto &value : type.array) + json_stream->emit_json_array_value(value); + json_stream->end_json_array(); + } +} + +void CompilerReflection::emit_type_member_qualifiers(const SPIRType &type, uint32_t index) +{ + auto flags = combined_decoration_for_member(type, index); + if (flags.get(DecorationRowMajor)) + json_stream->emit_json_key_value("row_major", true); + + auto &membertype = get<SPIRType>(type.member_types[index]); + emit_type_array(membertype); + auto &memb = ir.meta[type.self].members; + if (index < memb.size()) + { + auto &dec = memb[index]; + if (dec.decoration_flags.get(DecorationLocation)) + json_stream->emit_json_key_value("location", dec.location); + if (dec.decoration_flags.get(DecorationOffset)) + json_stream->emit_json_key_value("offset", dec.offset); + } +} + +string CompilerReflection::execution_model_to_str(spv::ExecutionModel model) +{ + switch (model) + { + case ExecutionModelVertex: + return "vert"; + case ExecutionModelTessellationControl: + return "tesc"; + case ExecutionModelTessellationEvaluation: + return "tese"; + case ExecutionModelGeometry: + return "geom"; + case ExecutionModelFragment: + return "frag"; + case ExecutionModelGLCompute: + return "comp"; + case ExecutionModelRayGenerationNV: + return "rgen"; + case ExecutionModelIntersectionNV: + return "rint"; + case ExecutionModelAnyHitNV: + return "rahit"; + case ExecutionModelClosestHitNV: + return "rchit"; + case ExecutionModelMissNV: + return "rmiss"; + case ExecutionModelCallableNV: + return "rcall"; + default: + return "???"; + } +} + +// FIXME include things like the local_size dimensions, geometry output vertex count, etc +void CompilerReflection::emit_entry_points() +{ + auto entries = get_entry_points_and_stages(); + if (!entries.empty()) + { + // Needed to make output deterministic. + sort(begin(entries), end(entries), [](const EntryPoint &a, const EntryPoint &b) -> bool { + if (a.execution_model < b.execution_model) + return true; + else if (a.execution_model > b.execution_model) + return false; + else + return a.name < b.name; + }); + + json_stream->emit_json_key_array("entryPoints"); + for (auto &e : entries) + { + json_stream->begin_json_object(); + json_stream->emit_json_key_value("name", e.name); + json_stream->emit_json_key_value("mode", execution_model_to_str(e.execution_model)); + json_stream->end_json_object(); + } + json_stream->end_json_array(); + } +} + +void CompilerReflection::emit_resources() +{ + auto res = get_shader_resources(); + emit_resources("subpass_inputs", res.subpass_inputs); + emit_resources("inputs", res.stage_inputs); + emit_resources("outputs", res.stage_outputs); + emit_resources("textures", res.sampled_images); + emit_resources("separate_images", res.separate_images); + emit_resources("separate_samplers", res.separate_samplers); + emit_resources("images", res.storage_images); + emit_resources("ssbos", res.storage_buffers); + emit_resources("ubos", res.uniform_buffers); + emit_resources("push_constants", res.push_constant_buffers); + emit_resources("counters", res.atomic_counters); + emit_resources("acceleration_structures", res.acceleration_structures); +} + +void CompilerReflection::emit_resources(const char *tag, const vector<Resource> &resources) +{ + if (resources.empty()) + { + return; + } + + json_stream->emit_json_key_array(tag); + for (auto &res : resources) + { + auto &type = get_type(res.type_id); + auto typeflags = ir.meta[type.self].decoration.decoration_flags; + auto &mask = get_decoration_bitset(res.id); + + // If we don't have a name, use the fallback for the type instead of the variable + // for SSBOs and UBOs since those are the only meaningful names to use externally. + // Push constant blocks are still accessed by name and not block name, even though they are technically Blocks. + bool is_push_constant = get_storage_class(res.id) == StorageClassPushConstant; + bool is_block = get_decoration_bitset(type.self).get(DecorationBlock) || + get_decoration_bitset(type.self).get(DecorationBufferBlock); + + uint32_t fallback_id = !is_push_constant && is_block ? res.base_type_id : res.id; + + json_stream->begin_json_object(); + + if (type.basetype == SPIRType::Struct) + { + json_stream->emit_json_key_value("type", "_" + std::to_string(res.base_type_id)); + } + else + { + json_stream->emit_json_key_value("type", type_to_glsl(type)); + } + + json_stream->emit_json_key_value("name", !res.name.empty() ? res.name : get_fallback_name(fallback_id)); + { + bool ssbo_block = type.storage == StorageClassStorageBuffer || + (type.storage == StorageClassUniform && typeflags.get(DecorationBufferBlock)); + if (ssbo_block) + { + auto buffer_flags = get_buffer_block_flags(res.id); + if (buffer_flags.get(DecorationNonReadable)) + json_stream->emit_json_key_value("writeonly", true); + if (buffer_flags.get(DecorationNonWritable)) + json_stream->emit_json_key_value("readonly", true); + if (buffer_flags.get(DecorationRestrict)) + json_stream->emit_json_key_value("restrict", true); + if (buffer_flags.get(DecorationCoherent)) + json_stream->emit_json_key_value("coherent", true); + } + } + + emit_type_array(type); + + { + bool is_sized_block = is_block && (get_storage_class(res.id) == StorageClassUniform || + get_storage_class(res.id) == StorageClassUniformConstant || + get_storage_class(res.id) == StorageClassStorageBuffer); + if (is_sized_block) + { + uint32_t block_size = uint32_t(get_declared_struct_size(get_type(res.base_type_id))); + json_stream->emit_json_key_value("block_size", block_size); + } + } + + if (type.storage == StorageClassPushConstant) + json_stream->emit_json_key_value("push_constant", true); + if (mask.get(DecorationLocation)) + json_stream->emit_json_key_value("location", get_decoration(res.id, DecorationLocation)); + if (mask.get(DecorationRowMajor)) + json_stream->emit_json_key_value("row_major", true); + if (mask.get(DecorationColMajor)) + json_stream->emit_json_key_value("column_major", true); + if (mask.get(DecorationIndex)) + json_stream->emit_json_key_value("index", get_decoration(res.id, DecorationIndex)); + if (type.storage != StorageClassPushConstant && mask.get(DecorationDescriptorSet)) + json_stream->emit_json_key_value("set", get_decoration(res.id, DecorationDescriptorSet)); + if (mask.get(DecorationBinding)) + json_stream->emit_json_key_value("binding", get_decoration(res.id, DecorationBinding)); + if (mask.get(DecorationInputAttachmentIndex)) + json_stream->emit_json_key_value("input_attachment_index", + get_decoration(res.id, DecorationInputAttachmentIndex)); + if (mask.get(DecorationOffset)) + json_stream->emit_json_key_value("offset", get_decoration(res.id, DecorationOffset)); + + // For images, the type itself adds a layout qualifer. + // Only emit the format for storage images. + if (type.basetype == SPIRType::Image && type.image.sampled == 2) + { + const char *fmt = format_to_glsl(type.image.format); + if (fmt != nullptr) + json_stream->emit_json_key_value("format", std::string(fmt)); + } + json_stream->end_json_object(); + } + json_stream->end_json_array(); +} + +void CompilerReflection::emit_specialization_constants() +{ + auto specialization_constants = get_specialization_constants(); + if (specialization_constants.empty()) + return; + + json_stream->emit_json_key_array("specialization_constants"); + for (const auto spec_const : specialization_constants) + { + auto &c = get<SPIRConstant>(spec_const.id); + auto type = get<SPIRType>(c.constant_type); + json_stream->begin_json_object(); + json_stream->emit_json_key_value("id", spec_const.constant_id); + json_stream->emit_json_key_value("type", type_to_glsl(type)); + switch (type.basetype) + { + case SPIRType::UInt: + json_stream->emit_json_key_value("default_value", c.scalar()); + break; + + case SPIRType::Int: + json_stream->emit_json_key_value("default_value", c.scalar_i32()); + break; + + case SPIRType::Float: + json_stream->emit_json_key_value("default_value", c.scalar_f32()); + break; + + case SPIRType::Boolean: + json_stream->emit_json_key_value("default_value", c.scalar() != 0); + break; + + default: + break; + } + json_stream->end_json_object(); + } + json_stream->end_json_array(); +} + +string CompilerReflection::to_member_name(const SPIRType &type, uint32_t index) const +{ + auto *type_meta = ir.find_meta(type.self); + + if (type_meta) + { + auto &memb = type_meta->members; + if (index < memb.size() && !memb[index].alias.empty()) + return memb[index].alias; + else + return join("_m", index); + } + else + return join("_m", index); +} |