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// glslang-module.cpp
#include "glslang-module.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#if SLANG_WINDOWS_FAMILY
#include <windows.h>
#else
#include <dlfcn.h>
#endif
#include "../renderer-shared.h"
namespace gfx
{
using namespace Slang;
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! GlslangModule
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Slang::Result GlslangModule::init()
{
if (isInitialized())
{
destroy();
}
const char* dynamicLibraryName = "Unknown";
#if SLANG_WINDOWS_FAMILY
dynamicLibraryName = "slang-glslang.dll";
HMODULE module = ::LoadLibraryA(dynamicLibraryName);
m_module = (void*)module;
#elif SLANG_APPLE_FAMILY
dynamicLibraryName = "libslang_glslang.dylib";
m_module = dlopen(dynamicLibraryName, RTLD_NOW | RTLD_GLOBAL);
#else
dynamicLibraryName = "libslang_glslang.so";
m_module = dlopen(dynamicLibraryName, RTLD_NOW);
#endif
if (!m_module)
{
return SLANG_FAIL;
}
// Load functions
#if SLANG_WINDOWS_FAMILY
m_linkSPIRVFunc = (glslang_LinkSPIRVFunc)GetProcAddress((HMODULE)m_module, "glslang_linkSPIRV");
#else
m_linkSPIRVFunc = (glslang_LinkSPIRVFunc)dlsym(m_module, "glslang_linkSPIRV");
#endif
if (!m_linkSPIRVFunc)
{
return SLANG_FAIL;
}
return SLANG_OK;
}
void GlslangModule::destroy()
{
if (!isInitialized())
{
return;
}
#if SLANG_WINDOWS_FAMILY
::FreeLibrary((HMODULE)m_module);
#else
dlclose(m_module);
#endif
m_module = nullptr;
}
ComPtr<ISlangBlob> GlslangModule::linkSPIRV(List<ComPtr<ISlangBlob>> spirvModules)
{
if (!m_linkSPIRVFunc)
{
return nullptr;
}
glslang_LinkRequest request = {};
std::vector<const uint32_t*> moduleCodePtrs(spirvModules.getCount());
std::vector<uint32_t> moduleSizes(spirvModules.getCount());
for (Index i = 0; i < spirvModules.getCount(); ++i)
{
moduleCodePtrs[i] = (const uint32_t*)spirvModules[i]->getBufferPointer();
moduleSizes[i] = spirvModules[i]->getBufferSize() / sizeof(uint32_t);
SLANG_ASSERT(spirvModules[i]->getBufferSize() % sizeof(uint32_t) == 0);
}
request.modules = moduleCodePtrs.data();
request.moduleSizes = moduleSizes.data();
request.moduleCount = spirvModules.getCount();
request.linkResult = nullptr;
m_linkSPIRVFunc(&request);
ComPtr<ISlangBlob> linkedSPIRV;
linkedSPIRV = RawBlob::create(request.linkResult, request.linkResultSize * sizeof(uint32_t));
return linkedSPIRV;
}
} // namespace gfx
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