Various Fixes to gfx, reflection and emit. (#1867)

* Various Fixes to gfx, reflection and emit.

- Fix GLSL emit to properly output `*bitsTo*` functions for `IRBitCast` insts.

- Add line directive mode setting for `ISession`.

- Extend `TypeLayout::getElementStride` to handle `VectorType` case.

- Fix `IDevice::readBufferResource` 's D3D12  implementation to copy only the requested bytes out.

- Fix `render-test` to use the `ISession` from `gfx` instead of creating its own `ISession` to make sure `gfx` and `render-test` agree on WitnessTable and RTTI IDs.

- Extend `render-test` to support filling vector and matrix values in the new `set x = ...` TEST_INPUT syntax.

- Add a `dynamic-dispatch-15` test case to make sure packing / unpacking works correctly across all targets, and to make sure render-test's RTTI/WitnessTable ID filling logic is correct for non-trivial cases.

* Remove default-major test

* Fix cyclic reference in `ExtendedTypeLayout`.

* Move `lineDirectiveMode` setting to `TargetDesc`.

Add `structureSize` to `TargetDesc` and `SessionDesc` for future binary compatibility.

* Cleanup.

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/source/slang/slang-api.cpp b/source/slang/slang-api.cpp
index 8347b8c30..a00d993e3 100644
--- a/source/slang/slang-api.cpp
+++ b/source/slang/slang-api.cpp
@@ -272,6 +272,15 @@ SLANG_API void spSetLineDirectiveMode(
     request->setLineDirectiveMode(mode);
 }
 
+SLANG_API void spSetTargetLineDirectiveMode(
+    slang::ICompileRequest* request,
+    int targetIndex,
+    SlangLineDirectiveMode mode)
+{
+    SLANG_ASSERT(request);
+    request->setTargetLineDirectiveMode(targetIndex, mode);
+}
+
 SLANG_API void spSetCommandLineCompilerMode(
     slang::ICompileRequest* request)
 {