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main.cpp
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main.cpp
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/*
* Copyright 2015-2019 Arm Limited
*
* 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_cpp.hpp"
#include "spirv_cross_util.hpp"
#include "spirv_glsl.hpp"
#include "spirv_hlsl.hpp"
#include "spirv_msl.hpp"
#include "spirv_parser.hpp"
#include "spirv_reflect.hpp"
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <functional>
#include <limits>
#include <memory>
#include <stdexcept>
#include <unordered_map>
#include <unordered_set>
#ifdef HAVE_SPIRV_CROSS_GIT_VERSION
#include "gitversion.h"
#endif
#ifdef _MSC_VER
#pragma warning(disable : 4996)
#endif
using namespace spv;
using namespace SPIRV_CROSS_NAMESPACE;
using namespace std;
#ifdef SPIRV_CROSS_EXCEPTIONS_TO_ASSERTIONS
static inline void THROW(const char *str)
{
fprintf(stderr, "SPIRV-Cross will abort: %s\n", str);
fflush(stderr);
abort();
}
#else
#define THROW(x) throw runtime_error(x)
#endif
struct CLIParser;
struct CLICallbacks
{
void add(const char *cli, const function<void(CLIParser &)> &func)
{
callbacks[cli] = func;
}
unordered_map<string, function<void(CLIParser &)>> callbacks;
function<void()> error_handler;
function<void(const char *)> default_handler;
};
struct CLIParser
{
CLIParser(CLICallbacks cbs_, int argc_, char *argv_[])
: cbs(move(cbs_))
, argc(argc_)
, argv(argv_)
{
}
bool parse()
{
#ifndef SPIRV_CROSS_EXCEPTIONS_TO_ASSERTIONS
try
#endif
{
while (argc && !ended_state)
{
const char *next = *argv++;
argc--;
if (*next != '-' && cbs.default_handler)
{
cbs.default_handler(next);
}
else
{
auto itr = cbs.callbacks.find(next);
if (itr == ::end(cbs.callbacks))
{
THROW("Invalid argument");
}
itr->second(*this);
}
}
return true;
}
#ifndef SPIRV_CROSS_EXCEPTIONS_TO_ASSERTIONS
catch (...)
{
if (cbs.error_handler)
{
cbs.error_handler();
}
return false;
}
#endif
}
void end()
{
ended_state = true;
}
uint32_t next_uint()
{
if (!argc)
{
THROW("Tried to parse uint, but nothing left in arguments");
}
uint64_t val = stoul(*argv);
if (val > numeric_limits<uint32_t>::max())
{
THROW("next_uint() out of range");
}
argc--;
argv++;
return uint32_t(val);
}
double next_double()
{
if (!argc)
{
THROW("Tried to parse double, but nothing left in arguments");
}
double val = stod(*argv);
argc--;
argv++;
return val;
}
// Return a string only if it's not prefixed with `--`, otherwise return the default value
const char *next_value_string(const char *default_value)
{
if (!argc)
{
return default_value;
}
if (0 == strncmp("--", *argv, 2))
{
return default_value;
}
return next_string();
}
const char *next_string()
{
if (!argc)
{
THROW("Tried to parse string, but nothing left in arguments");
}
const char *ret = *argv;
argc--;
argv++;
return ret;
}
CLICallbacks cbs;
int argc;
char **argv;
bool ended_state = false;
};
static vector<uint32_t> read_spirv_file(const char *path)
{
FILE *file = fopen(path, "rb");
if (!file)
{
fprintf(stderr, "Failed to open SPIR-V file: %s\n", path);
return {};
}
fseek(file, 0, SEEK_END);
long len = ftell(file) / sizeof(uint32_t);
rewind(file);
vector<uint32_t> spirv(len);
if (fread(spirv.data(), sizeof(uint32_t), len, file) != size_t(len))
spirv.clear();
fclose(file);
return spirv;
}
static bool write_string_to_file(const char *path, const char *string)
{
FILE *file = fopen(path, "w");
if (!file)
{
fprintf(stderr, "Failed to write file: %s\n", path);
return false;
}
fprintf(file, "%s", string);
fclose(file);
return true;
}
static void print_resources(const Compiler &compiler, const char *tag, const SmallVector<Resource> &resources)
{
fprintf(stderr, "%s\n", tag);
fprintf(stderr, "=============\n\n");
bool print_ssbo = !strcmp(tag, "ssbos");
for (auto &res : resources)
{
auto &type = compiler.get_type(res.type_id);
if (print_ssbo && compiler.buffer_is_hlsl_counter_buffer(res.id))
continue;
// 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 = compiler.get_storage_class(res.id) == StorageClassPushConstant;
bool is_block = compiler.get_decoration_bitset(type.self).get(DecorationBlock) ||
compiler.get_decoration_bitset(type.self).get(DecorationBufferBlock);
bool is_sized_block = is_block && (compiler.get_storage_class(res.id) == StorageClassUniform ||
compiler.get_storage_class(res.id) == StorageClassUniformConstant);
uint32_t fallback_id = !is_push_constant && is_block ? res.base_type_id : res.id;
uint32_t block_size = 0;
uint32_t runtime_array_stride = 0;
if (is_sized_block)
{
auto &base_type = compiler.get_type(res.base_type_id);
block_size = uint32_t(compiler.get_declared_struct_size(base_type));
runtime_array_stride = uint32_t(compiler.get_declared_struct_size_runtime_array(base_type, 1) -
compiler.get_declared_struct_size_runtime_array(base_type, 0));
}
Bitset mask;
if (print_ssbo)
mask = compiler.get_buffer_block_flags(res.id);
else
mask = compiler.get_decoration_bitset(res.id);
string array;
for (auto arr : type.array)
array = join("[", arr ? convert_to_string(arr) : "", "]") + array;
fprintf(stderr, " ID %03u : %s%s", res.id,
!res.name.empty() ? res.name.c_str() : compiler.get_fallback_name(fallback_id).c_str(), array.c_str());
if (mask.get(DecorationLocation))
fprintf(stderr, " (Location : %u)", compiler.get_decoration(res.id, DecorationLocation));
if (mask.get(DecorationDescriptorSet))
fprintf(stderr, " (Set : %u)", compiler.get_decoration(res.id, DecorationDescriptorSet));
if (mask.get(DecorationBinding))
fprintf(stderr, " (Binding : %u)", compiler.get_decoration(res.id, DecorationBinding));
if (mask.get(DecorationInputAttachmentIndex))
fprintf(stderr, " (Attachment : %u)", compiler.get_decoration(res.id, DecorationInputAttachmentIndex));
if (mask.get(DecorationNonReadable))
fprintf(stderr, " writeonly");
if (mask.get(DecorationNonWritable))
fprintf(stderr, " readonly");
if (is_sized_block)
{
fprintf(stderr, " (BlockSize : %u bytes)", block_size);
if (runtime_array_stride)
fprintf(stderr, " (Unsized array stride: %u bytes)", runtime_array_stride);
}
uint32_t counter_id = 0;
if (print_ssbo && compiler.buffer_get_hlsl_counter_buffer(res.id, counter_id))
fprintf(stderr, " (HLSL counter buffer ID: %u)", counter_id);
fprintf(stderr, "\n");
}
fprintf(stderr, "=============\n\n");
}
static const char *execution_model_to_str(spv::ExecutionModel model)
{
switch (model)
{
case spv::ExecutionModelVertex:
return "vertex";
case spv::ExecutionModelTessellationControl:
return "tessellation control";
case ExecutionModelTessellationEvaluation:
return "tessellation evaluation";
case ExecutionModelGeometry:
return "geometry";
case ExecutionModelFragment:
return "fragment";
case ExecutionModelGLCompute:
return "compute";
case ExecutionModelRayGenerationNV:
return "raygenNV";
case ExecutionModelIntersectionNV:
return "intersectionNV";
case ExecutionModelCallableNV:
return "callableNV";
case ExecutionModelAnyHitNV:
return "anyhitNV";
case ExecutionModelClosestHitNV:
return "closesthitNV";
case ExecutionModelMissNV:
return "missNV";
default:
return "???";
}
}
static void print_resources(const Compiler &compiler, const ShaderResources &res)
{
auto &modes = compiler.get_execution_mode_bitset();
fprintf(stderr, "Entry points:\n");
auto entry_points = compiler.get_entry_points_and_stages();
for (auto &e : entry_points)
fprintf(stderr, " %s (%s)\n", e.name.c_str(), execution_model_to_str(e.execution_model));
fprintf(stderr, "\n");
fprintf(stderr, "Execution modes:\n");
modes.for_each_bit([&](uint32_t i) {
auto mode = static_cast<ExecutionMode>(i);
uint32_t arg0 = compiler.get_execution_mode_argument(mode, 0);
uint32_t arg1 = compiler.get_execution_mode_argument(mode, 1);
uint32_t arg2 = compiler.get_execution_mode_argument(mode, 2);
switch (static_cast<ExecutionMode>(i))
{
case ExecutionModeInvocations:
fprintf(stderr, " Invocations: %u\n", arg0);
break;
case ExecutionModeLocalSize:
fprintf(stderr, " LocalSize: (%u, %u, %u)\n", arg0, arg1, arg2);
break;
case ExecutionModeOutputVertices:
fprintf(stderr, " OutputVertices: %u\n", arg0);
break;
#define CHECK_MODE(m) \
case ExecutionMode##m: \
fprintf(stderr, " %s\n", #m); \
break
CHECK_MODE(SpacingEqual);
CHECK_MODE(SpacingFractionalEven);
CHECK_MODE(SpacingFractionalOdd);
CHECK_MODE(VertexOrderCw);
CHECK_MODE(VertexOrderCcw);
CHECK_MODE(PixelCenterInteger);
CHECK_MODE(OriginUpperLeft);
CHECK_MODE(OriginLowerLeft);
CHECK_MODE(EarlyFragmentTests);
CHECK_MODE(PointMode);
CHECK_MODE(Xfb);
CHECK_MODE(DepthReplacing);
CHECK_MODE(DepthGreater);
CHECK_MODE(DepthLess);
CHECK_MODE(DepthUnchanged);
CHECK_MODE(LocalSizeHint);
CHECK_MODE(InputPoints);
CHECK_MODE(InputLines);
CHECK_MODE(InputLinesAdjacency);
CHECK_MODE(Triangles);
CHECK_MODE(InputTrianglesAdjacency);
CHECK_MODE(Quads);
CHECK_MODE(Isolines);
CHECK_MODE(OutputPoints);
CHECK_MODE(OutputLineStrip);
CHECK_MODE(OutputTriangleStrip);
CHECK_MODE(VecTypeHint);
CHECK_MODE(ContractionOff);
default:
break;
}
});
fprintf(stderr, "\n");
print_resources(compiler, "subpass inputs", res.subpass_inputs);
print_resources(compiler, "inputs", res.stage_inputs);
print_resources(compiler, "outputs", res.stage_outputs);
print_resources(compiler, "textures", res.sampled_images);
print_resources(compiler, "separate images", res.separate_images);
print_resources(compiler, "separate samplers", res.separate_samplers);
print_resources(compiler, "images", res.storage_images);
print_resources(compiler, "ssbos", res.storage_buffers);
print_resources(compiler, "ubos", res.uniform_buffers);
print_resources(compiler, "push", res.push_constant_buffers);
print_resources(compiler, "counters", res.atomic_counters);
print_resources(compiler, "acceleration structures", res.acceleration_structures);
}
static void print_push_constant_resources(const Compiler &compiler, const SmallVector<Resource> &res)
{
for (auto &block : res)
{
auto ranges = compiler.get_active_buffer_ranges(block.id);
fprintf(stderr, "Active members in buffer: %s\n",
!block.name.empty() ? block.name.c_str() : compiler.get_fallback_name(block.id).c_str());
fprintf(stderr, "==================\n\n");
for (auto &range : ranges)
{
const auto &name = compiler.get_member_name(block.base_type_id, range.index);
fprintf(stderr, "Member #%3u (%s): Offset: %4u, Range: %4u\n", range.index,
!name.empty() ? name.c_str() : compiler.get_fallback_member_name(range.index).c_str(),
unsigned(range.offset), unsigned(range.range));
}
fprintf(stderr, "==================\n\n");
}
}
static void print_spec_constants(const Compiler &compiler)
{
auto spec_constants = compiler.get_specialization_constants();
fprintf(stderr, "Specialization constants\n");
fprintf(stderr, "==================\n\n");
for (auto &c : spec_constants)
fprintf(stderr, "ID: %u, Spec ID: %u\n", c.id, c.constant_id);
fprintf(stderr, "==================\n\n");
}
static void print_capabilities_and_extensions(const Compiler &compiler)
{
fprintf(stderr, "Capabilities\n");
fprintf(stderr, "============\n");
for (auto &capability : compiler.get_declared_capabilities())
fprintf(stderr, "Capability: %u\n", static_cast<unsigned>(capability));
fprintf(stderr, "============\n\n");
fprintf(stderr, "Extensions\n");
fprintf(stderr, "============\n");
for (auto &ext : compiler.get_declared_extensions())
fprintf(stderr, "Extension: %s\n", ext.c_str());
fprintf(stderr, "============\n\n");
}
struct PLSArg
{
PlsFormat format;
string name;
};
struct Remap
{
string src_name;
string dst_name;
unsigned components;
};
struct VariableTypeRemap
{
string variable_name;
string new_variable_type;
};
struct InterfaceVariableRename
{
StorageClass storageClass;
uint32_t location;
string variable_name;
};
struct CLIArguments
{
const char *input = nullptr;
const char *output = nullptr;
const char *cpp_interface_name = nullptr;
uint32_t version = 0;
uint32_t shader_model = 0;
uint32_t msl_version = 0;
bool es = false;
bool set_version = false;
bool set_shader_model = false;
bool set_msl_version = false;
bool set_es = false;
bool dump_resources = false;
bool force_temporary = false;
bool flatten_ubo = false;
bool fixup = false;
bool yflip = false;
bool sso = false;
bool support_nonzero_baseinstance = true;
bool msl_capture_output_to_buffer = false;
bool msl_swizzle_texture_samples = false;
bool msl_ios = false;
bool msl_pad_fragment_output = false;
bool msl_domain_lower_left = false;
bool msl_argument_buffers = false;
bool msl_texture_buffer_native = false;
bool msl_multiview = false;
bool msl_view_index_from_device_index = false;
bool msl_dispatch_base = false;
bool glsl_emit_push_constant_as_ubo = false;
bool glsl_emit_ubo_as_plain_uniforms = false;
bool vulkan_glsl_disable_ext_samplerless_texture_functions = false;
bool emit_line_directives = false;
SmallVector<uint32_t> msl_discrete_descriptor_sets;
SmallVector<PLSArg> pls_in;
SmallVector<PLSArg> pls_out;
SmallVector<Remap> remaps;
SmallVector<string> extensions;
SmallVector<VariableTypeRemap> variable_type_remaps;
SmallVector<InterfaceVariableRename> interface_variable_renames;
SmallVector<HLSLVertexAttributeRemap> hlsl_attr_remap;
string entry;
string entry_stage;
struct Rename
{
string old_name;
string new_name;
ExecutionModel execution_model;
};
SmallVector<Rename> entry_point_rename;
uint32_t iterations = 1;
bool cpp = false;
string reflect;
bool msl = false;
bool hlsl = false;
bool hlsl_compat = false;
bool hlsl_support_nonzero_base = false;
bool vulkan_semantics = false;
bool flatten_multidimensional_arrays = false;
bool use_420pack_extension = true;
bool remove_unused = false;
bool combined_samplers_inherit_bindings = false;
};
static void print_version()
{
#ifdef HAVE_SPIRV_CROSS_GIT_VERSION
fprintf(stderr, "%s\n", SPIRV_CROSS_GIT_REVISION);
#else
fprintf(stderr, "Git revision unknown. Build with CMake to create timestamp and revision info.\n");
#endif
}
static void print_help()
{
print_version();
fprintf(stderr, "Usage: spirv-cross\n"
"\t[--output <output path>]\n"
"\t[SPIR-V file]\n"
"\t[--es]\n"
"\t[--no-es]\n"
"\t[--version <GLSL version>]\n"
"\t[--dump-resources]\n"
"\t[--help]\n"
"\t[--revision]\n"
"\t[--force-temporary]\n"
"\t[--vulkan-semantics]\n"
"\t[--flatten-ubo]\n"
"\t[--fixup-clipspace]\n"
"\t[--flip-vert-y]\n"
"\t[--iterations iter]\n"
"\t[--cpp]\n"
"\t[--cpp-interface-name <name>]\n"
"\t[--glsl-emit-push-constant-as-ubo]\n"
"\t[--glsl-emit-ubo-as-plain-uniforms]\n"
"\t[--vulkan-glsl-disable-ext-samplerless-texture-functions]\n"
"\t[--msl]\n"
"\t[--msl-version <MMmmpp>]\n"
"\t[--msl-capture-output]\n"
"\t[--msl-swizzle-texture-samples]\n"
"\t[--msl-ios]\n"
"\t[--msl-pad-fragment-output]\n"
"\t[--msl-domain-lower-left]\n"
"\t[--msl-argument-buffers]\n"
"\t[--msl-texture-buffer-native]\n"
"\t[--msl-discrete-descriptor-set <index>]\n"
"\t[--msl-multiview]\n"
"\t[--msl-view-index-from-device-index]\n"
"\t[--msl-dispatch-base]\n"
"\t[--hlsl]\n"
"\t[--reflect]\n"
"\t[--shader-model]\n"
"\t[--hlsl-enable-compat]\n"
"\t[--hlsl-support-nonzero-basevertex-baseinstance]\n"
"\t[--separate-shader-objects]\n"
"\t[--pls-in format input-name]\n"
"\t[--pls-out format output-name]\n"
"\t[--remap source_name target_name components]\n"
"\t[--extension ext]\n"
"\t[--entry name]\n"
"\t[--stage <stage (vert, frag, geom, tesc, tese comp)>]\n"
"\t[--remove-unused-variables]\n"
"\t[--flatten-multidimensional-arrays]\n"
"\t[--no-420pack-extension]\n"
"\t[--remap-variable-type <variable_name> <new_variable_type>]\n"
"\t[--rename-interface-variable <in|out> <location> <new_variable_name>]\n"
"\t[--set-hlsl-vertex-input-semantic <location> <semantic>]\n"
"\t[--rename-entry-point <old> <new> <stage>]\n"
"\t[--combined-samplers-inherit-bindings]\n"
"\t[--no-support-nonzero-baseinstance]\n"
"\t[--emit-line-directives]\n"
"\n");
}
static bool remap_generic(Compiler &compiler, const SmallVector<Resource> &resources, const Remap &remap)
{
auto itr =
find_if(begin(resources), end(resources), [&remap](const Resource &res) { return res.name == remap.src_name; });
if (itr != end(resources))
{
compiler.set_remapped_variable_state(itr->id, true);
compiler.set_name(itr->id, remap.dst_name);
compiler.set_subpass_input_remapped_components(itr->id, remap.components);
return true;
}
else
return false;
}
static vector<PlsRemap> remap_pls(const SmallVector<PLSArg> &pls_variables, const SmallVector<Resource> &resources,
const SmallVector<Resource> *secondary_resources)
{
vector<PlsRemap> ret;
for (auto &pls : pls_variables)
{
bool found = false;
for (auto &res : resources)
{
if (res.name == pls.name)
{
ret.push_back({ res.id, pls.format });
found = true;
break;
}
}
if (!found && secondary_resources)
{
for (auto &res : *secondary_resources)
{
if (res.name == pls.name)
{
ret.push_back({ res.id, pls.format });
found = true;
break;
}
}
}
if (!found)
fprintf(stderr, "Did not find stage input/output/target with name \"%s\".\n", pls.name.c_str());
}
return ret;
}
static PlsFormat pls_format(const char *str)
{
if (!strcmp(str, "r11f_g11f_b10f"))
return PlsR11FG11FB10F;
else if (!strcmp(str, "r32f"))
return PlsR32F;
else if (!strcmp(str, "rg16f"))
return PlsRG16F;
else if (!strcmp(str, "rg16"))
return PlsRG16;
else if (!strcmp(str, "rgb10_a2"))
return PlsRGB10A2;
else if (!strcmp(str, "rgba8"))
return PlsRGBA8;
else if (!strcmp(str, "rgba8i"))
return PlsRGBA8I;
else if (!strcmp(str, "rgba8ui"))
return PlsRGBA8UI;
else if (!strcmp(str, "rg16i"))
return PlsRG16I;
else if (!strcmp(str, "rgb10_a2ui"))
return PlsRGB10A2UI;
else if (!strcmp(str, "rg16ui"))
return PlsRG16UI;
else if (!strcmp(str, "r32ui"))
return PlsR32UI;
else
return PlsNone;
}
static ExecutionModel stage_to_execution_model(const std::string &stage)
{
if (stage == "vert")
return ExecutionModelVertex;
else if (stage == "frag")
return ExecutionModelFragment;
else if (stage == "comp")
return ExecutionModelGLCompute;
else if (stage == "tesc")
return ExecutionModelTessellationControl;
else if (stage == "tese")
return ExecutionModelTessellationEvaluation;
else if (stage == "geom")
return ExecutionModelGeometry;
else
SPIRV_CROSS_THROW("Invalid stage.");
}
static string compile_iteration(const CLIArguments &args, std::vector<uint32_t> spirv_file)
{
Parser spirv_parser(move(spirv_file));
spirv_parser.parse();
unique_ptr<CompilerGLSL> compiler;
bool combined_image_samplers = false;
bool build_dummy_sampler = false;
if (args.cpp)
{
compiler.reset(new CompilerCPP(move(spirv_parser.get_parsed_ir())));
if (args.cpp_interface_name)
static_cast<CompilerCPP *>(compiler.get())->set_interface_name(args.cpp_interface_name);
}
else if (args.msl)
{
compiler.reset(new CompilerMSL(move(spirv_parser.get_parsed_ir())));
auto *msl_comp = static_cast<CompilerMSL *>(compiler.get());
auto msl_opts = msl_comp->get_msl_options();
if (args.set_msl_version)
msl_opts.msl_version = args.msl_version;
msl_opts.capture_output_to_buffer = args.msl_capture_output_to_buffer;
msl_opts.swizzle_texture_samples = args.msl_swizzle_texture_samples;
if (args.msl_ios)
msl_opts.platform = CompilerMSL::Options::iOS;
msl_opts.pad_fragment_output_components = args.msl_pad_fragment_output;
msl_opts.tess_domain_origin_lower_left = args.msl_domain_lower_left;
msl_opts.argument_buffers = args.msl_argument_buffers;
msl_opts.texture_buffer_native = args.msl_texture_buffer_native;
msl_opts.multiview = args.msl_multiview;
msl_opts.view_index_from_device_index = args.msl_view_index_from_device_index;
msl_opts.dispatch_base = args.msl_dispatch_base;
msl_comp->set_msl_options(msl_opts);
for (auto &v : args.msl_discrete_descriptor_sets)
msl_comp->add_discrete_descriptor_set(v);
}
else if (args.hlsl)
compiler.reset(new CompilerHLSL(move(spirv_parser.get_parsed_ir())));
else
{
combined_image_samplers = !args.vulkan_semantics;
if (!args.vulkan_semantics || args.vulkan_glsl_disable_ext_samplerless_texture_functions)
build_dummy_sampler = true;
compiler.reset(new CompilerGLSL(move(spirv_parser.get_parsed_ir())));
}
if (!args.variable_type_remaps.empty())
{
auto remap_cb = [&](const SPIRType &, const string &name, string &out) -> void {
for (const VariableTypeRemap &remap : args.variable_type_remaps)
if (name == remap.variable_name)
out = remap.new_variable_type;
};
compiler->set_variable_type_remap_callback(move(remap_cb));
}
for (auto &rename : args.entry_point_rename)
compiler->rename_entry_point(rename.old_name, rename.new_name, rename.execution_model);
auto entry_points = compiler->get_entry_points_and_stages();
auto entry_point = args.entry;
ExecutionModel model = ExecutionModelMax;
if (!args.entry_stage.empty())
{
model = stage_to_execution_model(args.entry_stage);
if (entry_point.empty())
{
// Just use the first entry point with this stage.
for (auto &e : entry_points)
{
if (e.execution_model == model)
{
entry_point = e.name;
break;
}
}
if (entry_point.empty())
{
fprintf(stderr, "Could not find an entry point with stage: %s\n", args.entry_stage.c_str());
exit(EXIT_FAILURE);
}
}
else
{
// Make sure both stage and name exists.
bool exists = false;
for (auto &e : entry_points)
{
if (e.execution_model == model && e.name == entry_point)
{
exists = true;
break;
}
}
if (!exists)
{
fprintf(stderr, "Could not find an entry point %s with stage: %s\n", entry_point.c_str(),
args.entry_stage.c_str());
exit(EXIT_FAILURE);
}
}
}
else if (!entry_point.empty())
{
// Make sure there is just one entry point with this name, or the stage
// is ambiguous.
uint32_t stage_count = 0;
for (auto &e : entry_points)
{
if (e.name == entry_point)
{
stage_count++;
model = e.execution_model;
}
}
if (stage_count == 0)
{
fprintf(stderr, "There is no entry point with name: %s\n", entry_point.c_str());
exit(EXIT_FAILURE);
}
else if (stage_count > 1)
{
fprintf(stderr, "There is more than one entry point with name: %s. Use --stage.\n", entry_point.c_str());
exit(EXIT_FAILURE);
}
}
if (!entry_point.empty())
compiler->set_entry_point(entry_point, model);
if (!args.set_version && !compiler->get_common_options().version)
{
fprintf(stderr, "Didn't specify GLSL version and SPIR-V did not specify language.\n");
print_help();
exit(EXIT_FAILURE);
}
CompilerGLSL::Options opts = compiler->get_common_options();
if (args.set_version)
opts.version = args.version;
if (args.set_es)
opts.es = args.es;
opts.force_temporary = args.force_temporary;
opts.separate_shader_objects = args.sso;
opts.flatten_multidimensional_arrays = args.flatten_multidimensional_arrays;
opts.enable_420pack_extension = args.use_420pack_extension;
opts.vulkan_semantics = args.vulkan_semantics;
opts.vertex.fixup_clipspace = args.fixup;
opts.vertex.flip_vert_y = args.yflip;
opts.vertex.support_nonzero_base_instance = args.support_nonzero_baseinstance;
opts.emit_push_constant_as_uniform_buffer = args.glsl_emit_push_constant_as_ubo;
opts.emit_uniform_buffer_as_plain_uniforms = args.glsl_emit_ubo_as_plain_uniforms;
opts.emit_line_directives = args.emit_line_directives;
compiler->set_common_options(opts);
// Set HLSL specific options.
if (args.hlsl)
{
auto *hlsl = static_cast<CompilerHLSL *>(compiler.get());
auto hlsl_opts = hlsl->get_hlsl_options();
if (args.set_shader_model)
{
if (args.shader_model < 30)
{
fprintf(stderr, "Shader model earlier than 30 (3.0) not supported.\n");
exit(EXIT_FAILURE);
}
hlsl_opts.shader_model = args.shader_model;
}
if (args.hlsl_compat)
{
// Enable all compat options.
hlsl_opts.point_size_compat = true;
hlsl_opts.point_coord_compat = true;
}
if (hlsl_opts.shader_model <= 30)
{
combined_image_samplers = true;
build_dummy_sampler = true;
}
hlsl_opts.support_nonzero_base_vertex_base_instance = args.hlsl_support_nonzero_base;
hlsl->set_hlsl_options(hlsl_opts);
}
if (build_dummy_sampler)
{
uint32_t sampler = compiler->build_dummy_sampler_for_combined_images();
if (sampler != 0)
{
// Set some defaults to make validation happy.
compiler->set_decoration(sampler, DecorationDescriptorSet, 0);
compiler->set_decoration(sampler, DecorationBinding, 0);
}
}
ShaderResources res;
if (args.remove_unused)
{
auto active = compiler->get_active_interface_variables();
res = compiler->get_shader_resources(active);
compiler->set_enabled_interface_variables(move(active));
}
else
res = compiler->get_shader_resources();
if (args.flatten_ubo)
{
for (auto &ubo : res.uniform_buffers)
compiler->flatten_buffer_block(ubo.id);
for (auto &ubo : res.push_constant_buffers)
compiler->flatten_buffer_block(ubo.id);
}
auto pls_inputs = remap_pls(args.pls_in, res.stage_inputs, &res.subpass_inputs);
auto pls_outputs = remap_pls(args.pls_out, res.stage_outputs, nullptr);
compiler->remap_pixel_local_storage(move(pls_inputs), move(pls_outputs));
for (auto &ext : args.extensions)
compiler->require_extension(ext);
for (auto &remap : args.remaps)
{
if (remap_generic(*compiler, res.stage_inputs, remap))
continue;
if (remap_generic(*compiler, res.stage_outputs, remap))
continue;
if (remap_generic(*compiler, res.subpass_inputs, remap))
continue;
}
for (auto &rename : args.interface_variable_renames)
{
if (rename.storageClass == StorageClassInput)
spirv_cross_util::rename_interface_variable(*compiler, res.stage_inputs, rename.location,
rename.variable_name);
else if (rename.storageClass == StorageClassOutput)
spirv_cross_util::rename_interface_variable(*compiler, res.stage_outputs, rename.location,
rename.variable_name);
else
{
fprintf(stderr, "error at --rename-interface-variable <in|out> ...\n");
exit(EXIT_FAILURE);
}
}
if (args.dump_resources)
{
print_resources(*compiler, res);
print_push_constant_resources(*compiler, res.push_constant_buffers);
print_spec_constants(*compiler);
print_capabilities_and_extensions(*compiler);
}
if (combined_image_samplers)
{
compiler->build_combined_image_samplers();
if (args.combined_samplers_inherit_bindings)
spirv_cross_util::inherit_combined_sampler_bindings(*compiler);
// Give the remapped combined samplers new names.