Fix `shouldEmitSPIRVDirectly` (#8019)

Fixes: #8018

Changes:
* Do not emit true for `shouldEmitSPIRVDirectly` with a GLSL target

1 files changed, 4 insertions, 1 deletions

diff --git a/source/slang/slang-ir-lower-buffer-element-type.cpp b/source/slang/slang-ir-lower-buffer-element-type.cpp
index 2f40c6cf9..056ee6244 100644
--- a/source/slang/slang-ir-lower-buffer-element-type.cpp
+++ b/source/slang/slang-ir-lower-buffer-element-type.cpp
@@ -666,7 +666,10 @@ struct LoweredElementTypeContext
             // For spirv backend, we always want to lower all array types, even if the element type
             // comes out the same. This is because different layout rules may have different array
             // stride requirements.
-            if (!target->shouldEmitSPIRVDirectly())
+            //
+            // Additionally, `buffer` blocks do not work correctly unless lowered when targeting
+            // GLSL.
+            if (!isKhronosTarget(target->getTargetReq()))
             {
                 // For non-spirv target, we skip lowering this type if all field types are
                 // unchanged.