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, 13 insertions, 0 deletions

diff --git a/tools/gfx-util/shader-cursor.cpp b/tools/gfx-util/shader-cursor.cpp
index afb1540d5..efdde44b8 100644
--- a/tools/gfx-util/shader-cursor.cpp
+++ b/tools/gfx-util/shader-cursor.cpp
@@ -195,6 +195,19 @@ ShaderCursor ShaderCursor::getElement(SlangInt index) const
             return fieldCursor;
         }
         break;
+
+    case slang::TypeReflection::Kind::Vector:
+    case slang::TypeReflection::Kind::Matrix:
+        {
+            ShaderCursor fieldCursor;
+            fieldCursor.m_baseObject = m_baseObject;
+            fieldCursor.m_typeLayout = m_typeLayout->getElementTypeLayout();
+            fieldCursor.m_offset.uniformOffset = m_offset.uniformOffset + m_typeLayout->getElementStride(SLANG_PARAMETER_CATEGORY_UNIFORM) * index;
+            fieldCursor.m_offset.bindingRangeIndex = m_offset.bindingRangeIndex;
+            fieldCursor.m_offset.bindingArrayIndex = m_offset.bindingArrayIndex;
+            return fieldCursor;
+        }
+        break;
     }
 
     return ShaderCursor();