Improvements in -X support (#1852)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Added SourceLoc handling for command line parsing.

* Fix typo in debug.

* Fix issue around the DiagnosticSink used in options parsing not having a writer available - by having DiagnosticSink parenting.

* Small rename for clarity.

* WIP extracting command line args for downstream tools.

* Unit tests/bug fixes around extracting args.

* Use DownstreamArgs in the EndToEndCompileRequest

* Passing downstream compiler options downstream.

* Fix issue with endToEndReq being nullptr.

* Fix issue with diagnostics number change.

* Small improvements to how the source line is displayed if it's too long.
Default to 120, as suggested in previous review.

* Make render test use x-args parsing and CommandArgReader.

* Added missing diagnostics.

* More DownstreamArgs to linkage so can be seen by 'components'.
Added dxc-x-arg test.

* Used combination of name and args instead of two Lists, which whilst equivalent was perhaps a little confusing.

* Added documentation for -X support.

* Added test for x-args parsing diagnostic. Improved diagnostic with list of known names.

* Fix issues from merge.

* Fix lookup for -matrix-layout-column-major in render test.

* Remove commented out line.

1 files changed, 10 insertions, 16 deletions

diff --git a/tools/render-test/options.h b/tools/render-test/options.h
index 2945113fe..7940d0d42 100644
--- a/tools/render-test/options.h
+++ b/tools/render-test/options.h
@@ -12,6 +12,8 @@
 
 #include "../../source/core/slang-process-util.h"
 
+#include "../../source/compiler-core/slang-command-line-args.h"
+
 #include "../../slang-gfx.h"
 
 namespace renderer_test {
@@ -20,12 +22,6 @@ using namespace gfx;
 
 struct Options
 {
-    enum
-    {
-        // maximum number of command-line arguments to pass along to slang
-        kMaxSlangArgs = 16,
-    };
-
     enum class InputLanguageID
     {
         // Slang being used as an HLSL-ish compiler
@@ -35,7 +31,6 @@ struct Options
         Native,
     };
 
-
     enum class ShaderProgramType
     {
         Graphics,
@@ -44,9 +39,9 @@ struct Options
         RayTracing,
     };
 
-    char const* appName = "render-test";
-    char const* sourcePath = nullptr;
-    char const* outputPath = nullptr;
+    Slang::String appName = "render-test";
+    Slang::String sourcePath;
+    Slang::String outputPath;
 	ShaderProgramType shaderType = ShaderProgramType::Graphics;
 
         /// The renderer type inferred from the target language type. Used if a rendererType is not explicitly set.
@@ -57,10 +52,7 @@ struct Options
     SlangSourceLanguage sourceLanguage = SLANG_SOURCE_LANGUAGE_UNKNOWN;
 
         /// Can be used for overriding the profile
-    const char* profileName = nullptr;
-
-    char const* slangArgs[kMaxSlangArgs];
-    int slangArgCount = 0;
+    Slang::String profileName;
 
     bool outputUsingType = false;
 
@@ -73,14 +65,16 @@ struct Options
 
     Slang::List<Slang::String> renderFeatures;          /// Required render features for this test to run
 
-    Slang::List<Slang::String> compileArgs;
-
     Slang::String adapter;                              ///< The adapter to use either name or index
 
     uint32_t computeDispatchSize[3] = { 1, 1, 1 };
 
     Slang::String nvapiExtnSlot;                               ///< The nvapiRegister to use.
 
+    Slang::DownstreamArgs downstreamArgs;                    ///< Args to downstream tools. Here it's just slang
+
+    Options() { downstreamArgs.addName("slang"); }
+
     static SlangResult parse(int argc, const char*const* argv, Slang::WriterHelper stdError, Options& outOptions);
 };