Generate Visual Studio projects using Premake (#557)

* Generate Visual Studio projects using Premake

This change adds a `premake5.lua` file that allows us to generate our Visual Studio solution using Premake 5 (https://premake.github.io/).
The existing Visual Studio solution/projects are now replaced with the Premake-generated ones, and project contributors will be expected to update these by running premake after adding/removing files.

I have *not* changed the Linux `Makefile` build at all, because that file is also used for things like running our tests, so that clobbering it with a premake-generated `Makefile` would break our continuous testing.
Hopefully future changes can switch to a generated `Makefile` and perhaps even add an XCode project as well.

Notes:

* The `build/slang-build.props` file is no longer needed/used, so it has been removed.

* The `slang-eval-test` test fixture wasn't following our naming conventions for its directory path, so it was updated to streamline the Premake build configuration work. This required changes to the `Makefile` as well

* Some seemingly unncessary preprocessor definitions that were specified for `core` and `slang-glslang` have been dropped. We will see if anything breaks from that.

* Possible fixup for Premake vpath issue

Premake's `vpath` feature seems to be nondeterministic about the order it applies filters (because Lua isn't deterministic about the order of entries in a key/value table), and as a result we can end up in a weird case where it decides that a `foo.cpp.h` file matches the `**.cpp` filter (I'm not sure why) before it tests against the `**.h` filter.

This change uses an (undocumented) Premake facility to set `vpath` using a list of singleton tables, which seems to fix the order in which things get tested.

* Remove support for "single-file" build of Slang

The `hello` example was the only bit of code that uses the "single-file" way of building Slang, and this had already run up against limitations of the Visual Studio compilers in its Debug|x64 build.
Rather than mess with Premake to make it pass through the `/bigobj` linker flag that is needed to work around the issue, it makes more sense just to stop using/supporting the feature since we wouldn't want users to depend on it anyway (our documentation no longer refers to it).

While I was at it I went ahead and made sure that the `SLANG_DYNAMIC` flag doesn't need to be set manually, so that instead there is a non-default `SLANG_STATIC` option (not that we have a static-library build of Slang at the moment).

3 files changed, 324 insertions, 0 deletions

diff --git a/tools/slang-eval-test/main.cpp b/tools/slang-eval-test/main.cpp
new file mode 100644
index 000000000..e01d4441b
--- /dev/null
+++ b/tools/slang-eval-test/main.cpp
@@ -0,0 +1,133 @@
+// main.cpp
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "../../source/core/secure-crt.h"
+#include <slang.h>
+
+int main(
+    int argc,
+    char** argv)
+{
+    // TODO: parse arguments
+
+    assert(argc >= 2);
+    char const* inputPath = argv[1];
+
+    // Slurp in the input file, so that we can compile and run it
+    FILE* inputFile;
+    fopen_s(&inputFile, inputPath, "rb");
+    assert(inputFile);
+
+    fseek(inputFile, 0, SEEK_END);
+    size_t inputSize = ftell(inputFile);
+    fseek(inputFile, 0, SEEK_SET);
+
+    char* inputText = (char*) malloc(inputSize + 1);
+    fread(inputText, inputSize, 1, inputFile);
+    inputText[inputSize] = 0;
+    fclose(inputFile);
+
+    // TODO: scan through the text to find comments,
+    // that instruct us how to generate input and
+    // consume output when running the test.
+
+    //
+
+    SlangSession* session = spCreateSession(nullptr);
+    SlangCompileRequest* request = spCreateCompileRequest(session);
+
+    spSetOutputContainerFormat(
+        request,
+        SLANG_CONTAINER_FORMAT_SLANG_MODULE);
+
+    int translationUnitIndex = spAddTranslationUnit(
+        request,
+        SLANG_SOURCE_LANGUAGE_SLANG,
+        nullptr);
+
+    spAddTranslationUnitSourceString(
+        request,
+        translationUnitIndex,
+        inputPath,
+        inputText);
+
+    int entryPointIndex = spAddEntryPoint(
+        request,
+        translationUnitIndex,
+        "main",
+        spFindProfile(session, "cs_5_0"));
+
+    if( spCompile(request) != 0 )
+    {
+        char const* output = spGetDiagnosticOutput(request);
+        fputs(output, stderr);
+        exit(1);
+    }
+
+    // Things compiled, so now we need to run them...
+
+    // Extract the bytecode
+    size_t bytecodeSize = 0;
+    void const* bytecode = spGetCompileRequestCode(request, &bytecodeSize);
+
+    // Now we need to create an execution context to go and run the bytecode we got
+
+    SlangVM* vm = SlangVM_create();
+
+    SlangVMModule* vmModule = SlangVMModule_load(
+        vm,
+        bytecode,
+        bytecodeSize);
+
+    SlangVMFunc* vmFunc = (SlangVMFunc*)SlangVMModule_findGlobalSymbolPtr(
+        vmModule,
+        "main");
+
+    int32_t*& inputArg = *(int32_t**)SlangVMModule_findGlobalSymbolPtr(
+        vmModule,
+        "input");
+
+    int32_t*& outputArg = *(int32_t**)SlangVMModule_findGlobalSymbolPtr(
+        vmModule,
+        "output");
+
+    SlangVMThread* vmThread = SlangVMThread_create(
+        vm);
+
+    int32_t inputData[8] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+    int32_t outputData[8] = { 0 };
+
+    inputArg = inputData;
+    outputArg = outputData;
+
+    // TODO: set arguments based on specification from the user...
+    for (uint32_t threadID = 0; threadID < 8; ++threadID)
+    {
+#if 0
+        fprintf(stderr, "\n\nthreadID = %u\n\n", threadID);
+        fflush(stderr);
+#endif
+
+        SlangVMThread_beginCall(vmThread, vmFunc);
+
+        SlangVMThread_setArg(
+            vmThread,
+            0,
+            &threadID,
+            sizeof(threadID));
+
+        SlangVMThread_resume(vmThread);
+    }
+
+    for (uint32_t ii = 0; ii < 8; ++ii)
+    {
+        fprintf(stdout, "outputData[%u] = %d\n", ii, outputData[ii]);
+    }
+
+    spDestroyCompileRequest(request);
+    spDestroySession(session);
+
+    return 0;
+}
diff --git a/tools/slang-eval-test/slang-eval-test.vcxproj b/tools/slang-eval-test/slang-eval-test.vcxproj
new file mode 100644
index 000000000..c7b214d4a
--- /dev/null
+++ b/tools/slang-eval-test/slang-eval-test.vcxproj
@@ -0,0 +1,178 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{205FCAB9-A13F-4980-86FA-F6221A7095EE}</ProjectGuid>
+    <IgnoreWarnCompileDuplicatedFilename>true</IgnoreWarnCompileDuplicatedFilename>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>slang-eval-test</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\bin\windows-x86\debug\</OutDir>
+    <IntDir>..\..\intermediate\windows-x86\debug\slang-eval-test\</IntDir>
+    <TargetName>slang-eval-test</TargetName>
+    <TargetExt>.exe</TargetExt>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>..\..\bin\windows-x64\debug\</OutDir>
+    <IntDir>..\..\intermediate\windows-x64\debug\slang-eval-test\</IntDir>
+    <TargetName>slang-eval-test</TargetName>
+    <TargetExt>.exe</TargetExt>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\bin\windows-x86\release\</OutDir>
+    <IntDir>..\..\intermediate\windows-x86\release\slang-eval-test\</IntDir>
+    <TargetName>slang-eval-test</TargetName>
+    <TargetExt>.exe</TargetExt>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>..\..\bin\windows-x64\release\</OutDir>
+    <IntDir>..\..\intermediate\windows-x64\release\slang-eval-test\</IntDir>
+    <TargetName>slang-eval-test</TargetName>
+    <TargetExt>.exe</TargetExt>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
+      <Optimization>Disabled</Optimization>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
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+    </ClCompile>
+    <Link>
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+      <WarningLevel>Level3</WarningLevel>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <Optimization>Full</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <MinimalRebuild>false</MinimalRebuild>
+      <StringPooling>true</StringPooling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+      <WarningLevel>Level3</WarningLevel>
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+      <Optimization>Full</Optimization>
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+      <StringPooling>true</StringPooling>
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+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\source\core\core.vcxproj">
+      <Project>{F9BE7957-8399-899E-0C49-E714FDDD4B65}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\..\source\slang\slang.vcxproj">
+      <Project>{DB00DA62-0533-4AFD-B59F-A67D5B3A0808}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/tools/slang-eval-test/slang-eval-test.vcxproj.filters b/tools/slang-eval-test/slang-eval-test.vcxproj.filters
new file mode 100644
index 000000000..e9ae1c092
--- /dev/null
+++ b/tools/slang-eval-test/slang-eval-test.vcxproj.filters
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{E9C7FDCE-D52A-8D73-7EB0-C5296AF258F6}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file