metaforce/hecl/shaderc/main.cpp

142 lines
3.8 KiB
C++

#include "shaderc.hpp"
#include "logvisor/logvisor.hpp"
#include "athena/FileWriter.hpp"
#include "glslang/Public/ShaderLang.h"
#include "hecl/hecl.hpp"
#include <sstream>
static logvisor::Module Log("shaderc");
#if _WIN32
#include <d3dcompiler.h>
extern pD3DCompile D3DCompilePROC;
pD3DCompile D3DCompilePROC = nullptr;
static bool FindBestD3DCompile() {
HMODULE d3dCompilelib = LoadLibraryW(L"D3DCompiler_47.dll");
if (!d3dCompilelib) {
d3dCompilelib = LoadLibraryW(L"D3DCompiler_46.dll");
if (!d3dCompilelib) {
d3dCompilelib = LoadLibraryW(L"D3DCompiler_45.dll");
if (!d3dCompilelib) {
d3dCompilelib = LoadLibraryW(L"D3DCompiler_44.dll");
if (!d3dCompilelib) {
d3dCompilelib = LoadLibraryW(L"D3DCompiler_43.dll");
}
}
}
}
if (d3dCompilelib) {
D3DCompilePROC = (pD3DCompile)GetProcAddress(d3dCompilelib, "D3DCompile");
return D3DCompilePROC != nullptr;
}
return false;
}
int wmain(int argc, const hecl::SystemChar** argv)
#else
int main(int argc, const hecl::SystemChar** argv)
#endif
{
logvisor::RegisterConsoleLogger();
logvisor::RegisterStandardExceptions();
#if _WIN32
if (!FindBestD3DCompile()) {
Log.report(logvisor::Info, fmt("Unable to find D3DCompiler dll"));
return 1;
}
#endif
if (argc == 1) {
Log.report(logvisor::Info, fmt("Usage: shaderc -o <out-base> [-D definevar=defineval]... <in-files>..."));
return 0;
}
hecl::SystemString outPath;
hecl::shaderc::Compiler c;
for (int i = 1; i < argc; ++i) {
if (argv[i][0] == '-') {
if (argv[i][1] == 'o') {
if (argv[i][2]) {
outPath = &argv[i][2];
} else if (i + 1 < argc) {
++i;
outPath = argv[i];
} else {
Log.report(logvisor::Error, fmt("Invalid -o argument"));
return 1;
}
} else if (argv[i][1] == 'D') {
const hecl::SystemChar* define;
if (argv[i][2]) {
define = &argv[i][2];
} else if (i + 1 < argc) {
++i;
define = argv[i];
} else {
Log.report(logvisor::Error, fmt("Invalid -D argument"));
return 1;
}
hecl::SystemUTF8Conv conv(define);
const char* defineU8 = conv.c_str();
if (const char* equals = strchr(defineU8, '='))
c.addDefine(std::string(defineU8, equals - defineU8), equals + 1);
else
c.addDefine(defineU8, "");
} else {
Log.report(logvisor::Error, fmt(_SYS_STR("Unrecognized flag option '{:c}'")), argv[i][1]);
return 1;
}
} else {
c.addInputFile(argv[i]);
}
}
if (outPath.empty()) {
Log.report(logvisor::Error, fmt("-o option is required"));
return 1;
}
hecl::SystemStringView baseName;
auto slashPos = outPath.find_last_of(_SYS_STR("/\\"));
if (slashPos != hecl::SystemString::npos)
baseName = outPath.data() + slashPos + 1;
else
baseName = outPath;
if (!glslang::InitializeProcess()) {
Log.report(logvisor::Error, fmt("Unable to initialize glslang"));
return 1;
}
hecl::SystemUTF8Conv conv(baseName);
std::pair<std::stringstream, std::stringstream> ret;
if (!c.compile(conv.str(), ret))
return 1;
{
hecl::SystemString headerPath = outPath + _SYS_STR(".hpp");
athena::io::FileWriter w(headerPath);
if (w.hasError()) {
Log.report(logvisor::Error, fmt(_SYS_STR("Error opening '{}' for writing")), headerPath);
return 1;
}
std::string header = ret.first.str();
w.writeBytes(header.data(), header.size());
}
{
hecl::SystemString impPath = outPath + _SYS_STR(".cpp");
athena::io::FileWriter w(impPath);
if (w.hasError()) {
Log.report(logvisor::Error, fmt(_SYS_STR("Error opening '{}' for writing")), impPath);
return 1;
}
std::string source = ret.second.str();
w.writeBytes(source.data(), source.size());
}
return 0;
}