Add Mesh and Task shader support to GFX (#3190)

* Bump vulkan headers

Also just use vulkan-headers as a submodule

* Add drawMeshTasks to gfx graphics pipelines

* Add DispatchMesh overload with no payload, with GLSL intrinsic

* Require spirv 1.4 for mesh shaders

* Add vulkan mesh shader feature discovery

* Add mesh shader stage bits to vk-util

* Add mesh and task shader support to render-test

* Add mesh and task tests

* Preserve "payload" specifier in task shaders

* Add mesh shader pipeline support to gfx

* Add TODO

* Add numThreads attribute for amplification stage

* Add payload to task shader test

* Drop dependency on d3dx12

* Allow passing payloads from task to mesh shaders

* regenerate vs projects

* check DispatchMesh name correctly

* Add mesh shader tests to failing tests

* Detect wave-ops feature on vulkan

* Add fuse-product to expected failures

This fails because the global varaible `count` is not initialized

* Add required extension to WaveMaskMatch SPIR-V impl

* Remove meshShader member from pipeline desc

* Identify mesh shader support on d3d12

2 files changed, 9 insertions, 0 deletions

diff --git a/tools/gfx/debug-layer/debug-command-encoder.cpp b/tools/gfx/debug-layer/debug-command-encoder.cpp
index 3ddd6401f..b7b06c2f4 100644
--- a/tools/gfx/debug-layer/debug-command-encoder.cpp
+++ b/tools/gfx/debug-layer/debug-command-encoder.cpp
@@ -203,6 +203,12 @@ Result DebugRenderCommandEncoder::drawIndexedInstanced(
         indexCount, instanceCount, startIndexLocation, baseVertexLocation, startInstanceLocation);
 }
 
+Result DebugRenderCommandEncoder::drawMeshTasks(int x, int y, int z)
+{
+    SLANG_GFX_API_FUNC;
+    return baseObject->drawMeshTasks(x, y, z);
+}
+
 void DebugResourceCommandEncoder::endEncoding()
 {
     SLANG_GFX_API_FUNC;
diff --git a/tools/gfx/debug-layer/debug-command-encoder.h b/tools/gfx/debug-layer/debug-command-encoder.h
index 395db587e..a0c03e84c 100644
--- a/tools/gfx/debug-layer/debug-command-encoder.h
+++ b/tools/gfx/debug-layer/debug-command-encoder.h
@@ -231,6 +231,9 @@ public:
         GfxIndex baseVertexLocation,
         GfxIndex startInstanceLocation) override;
 
+    virtual SLANG_NO_THROW Result SLANG_MCALL
+        drawMeshTasks(int x, int y, int z) override;
+
 public:
     DebugCommandBuffer* commandBuffer;
     bool isOpen = false;