Vulkan update/NVAPI support (#1511)

* First pass at incorporating nvapi into test harness.

* D3d12 Atomic Float Add via NVAPI working

* Dx12 atomic float appears to work.

* Atomic float add on Dx12.

* Added atomic64 feature addition to vk.
Fix correct output for atomic-float-byte-address.slang

* Disable atomic float failing tests.

* Upgraded VK headers.

* Detect atomic float availability on VK.

* Try to get test working for in64 atomic.

* Made HLSL prelude controlled via the render-test requirements.

* Added -enable-nvapi to premake.

* Fix D3D12Renderer when NVAPI is not available.

* Small improvements to VKRenderer.

* Improve atomic documentation in target-compatibility.md.

5 files changed, 15 insertions, 31 deletions

diff --git a/tools/slang-test/options.cpp b/tools/slang-test/options.cpp
index eee099965..27b759a0e 100644
--- a/tools/slang-test/options.cpp
+++ b/tools/slang-test/options.cpp
@@ -266,16 +266,6 @@ static bool _isSubCommand(const char* arg)
                 return res;
             }
         }
-        else if (strcmp(arg, "-nvapi-path") == 0)
-        {
-            if (argCursor == argEnd)
-            {
-                stdError.print("error: expected operand for '%s'\n", arg);
-                return SLANG_FAIL;
-            }
-
-            optionsOut->nvapiPath = *argCursor++;
-        }
         else
         {
             stdError.print("unknown option '%s'\n", arg);
diff --git a/tools/slang-test/options.h b/tools/slang-test/options.h
index 220293ba0..a8c2e3852 100644
--- a/tools/slang-test/options.h
+++ b/tools/slang-test/options.h
@@ -98,9 +98,6 @@ struct Options
     // The adapter to use. If empty will match first found adapter.
     Slang::String adapter;
 
-    // The path to NVAPI if available. 
-    Slang::String nvapiPath;
-
         /// Parse the args, report any errors into stdError, and write the results into optionsOut
     static SlangResult parse(int argc, char** argv, TestCategorySet* categorySet, Slang::WriterHelper stdError, Options* optionsOut);
 };
diff --git a/tools/slang-test/slang-test-main.cpp b/tools/slang-test/slang-test-main.cpp
index 1144b4034..b2e2bb55c 100644
--- a/tools/slang-test/slang-test-main.cpp
+++ b/tools/slang-test/slang-test-main.cpp
@@ -495,6 +495,7 @@ Result spawnAndWaitSharedLibrary(TestContext* context, const String& testPath, c
     if (options.shouldBeVerbose)
     {
         CommandLine testCmdLine;
+
         testCmdLine.setExecutableFilename("slang-test");
 
         if (options.binDir.getLength())
@@ -531,8 +532,10 @@ Result spawnAndWaitSharedLibrary(TestContext* context, const String& testPath, c
             stdWriters.setWriter(SLANG_WRITER_CHANNEL_DIAGNOSTIC, &stdError);
         }
 
+        String exePath = Path::combine(context->exeDirectoryPath, exeName);
+
         List<const char*> args;
-        args.add(exeName.getBuffer());
+        args.add(exePath.getBuffer());
         for (Index i = 0; i < cmdLine.m_args.getCount(); ++i)
         {
             args.add(cmdLine.m_args[i].value.getBuffer());
@@ -3191,7 +3194,7 @@ SlangResult innerMain(int argc, char** argv)
 
     // The context holds useful things used during testing
     TestContext context;
-    SLANG_RETURN_ON_FAIL(SLANG_FAILED(context.init()))
+    SLANG_RETURN_ON_FAIL(SLANG_FAILED(context.init(argv[0])))
 
     auto& categorySet = context.categorySet;
 
@@ -3272,19 +3275,9 @@ SlangResult innerMain(int argc, char** argv)
     
     Options& options = context.options;
 
-    // Set up the prelude
-    {
-        TestToolUtil::PreludeInfo info;
-        info.exePath = argv[0];
-
-        if (options.nvapiPath.getLength())
-        {
-            info.nvapiPath = options.nvapiPath.getBuffer();
-        }
-
-        TestToolUtil::setSessionDefaultPrelude(info, context.getSession());
-    }
-
+    // Set up the prelude/s
+    TestToolUtil::setSessionDefaultPreludeFromExePath(argv[0], context.getSession());
+    
     if (options.outputMode == TestOutputMode::TeamCity)
     {
         // On TeamCity CI there is an issue with unix/linux targets where test system may be different from the build system
diff --git a/tools/slang-test/test-context.cpp b/tools/slang-test/test-context.cpp
index 8fa5cb345..2872ddb47 100644
--- a/tools/slang-test/test-context.cpp
+++ b/tools/slang-test/test-context.cpp
@@ -5,6 +5,8 @@
 #include "../../source/core/slang-string-util.h"
 #include "../../source/core/slang-shared-library.h"
 
+#include "../../source/core/slang-test-tool-util.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -15,14 +17,14 @@ TestContext::TestContext()
     m_session = nullptr;
 }
 
-Result TestContext::init()
+Result TestContext::init(const char* exePath)
 {
     m_session = spCreateSession(nullptr);
     if (!m_session)
     {
         return SLANG_FAIL;
     }
-
+    SLANG_RETURN_ON_FAIL(TestToolUtil::getExeDirectoryPath(exePath, exeDirectoryPath));
     return SLANG_OK;
 }
 
diff --git a/tools/slang-test/test-context.h b/tools/slang-test/test-context.h
index ab0a00b40..46a42f3fa 100644
--- a/tools/slang-test/test-context.h
+++ b/tools/slang-test/test-context.h
@@ -83,7 +83,7 @@ class TestContext
         /// Get the slang session
     SlangSession* getSession() const { return m_session;  }
 
-    SlangResult init();
+    SlangResult init(const char* exePath);
 
         /// Get the inner main function (from shared library)
     InnerMainFunc getInnerMainFunc(const Slang::String& dirPath, const Slang::String& name);
@@ -126,6 +126,8 @@ class TestContext
 
     Slang::RefPtr<Slang::DownstreamCompilerSet> compilerSet;
 
+    Slang::String exeDirectoryPath;
+    
 protected:
     struct SharedLibraryTool
     {