Generate OpExecutionMode PointMode for tessellation shaders (#7662)

* Generate "OpExecutionMode PointMode" for tessellation shaders instead of the incorrect geometry and mesh shader specific "OpExecutionMode OutputPoints".

* Add a test case verifying the OpExecutionMode is correct.

Fixes #7660

1 files changed, 2 insertions, 0 deletions

diff --git a/source/slang/slang-emit-spirv.cpp b/source/slang/slang-emit-spirv.cpp
index 7f6202a7f..28862f5b8 100644
--- a/source/slang/slang-emit-spirv.cpp
+++ b/source/slang/slang-emit-spirv.cpp
@@ -5312,6 +5312,8 @@ struct SPIRVEmitContext : public SourceEmitterBase, public SPIRVEmitSharedContex
                             m = SpvExecutionModeVertexOrderCw;
                         else if (topologyType == OutputTopologyType::TriangleCCW)
                             m = SpvExecutionModeVertexOrderCcw;
+                        else if (topologyType == OutputTopologyType::Point)
+                            m = SpvExecutionModePointMode;
                         break;
                     }
                 }