Fix atomic operations on RWBuffer (#593)

* Fix atomic operations on RWBuffer

An earlier change added support for passing true pointers to `__ref` parameters to fix the global `Interlocked*()` functions when applied to `groupshared` variables or `RWStructureBuffer<T>` elements.
That change didn't apply to `RWBuffer<T>` or `RWTexture2D<T>`, etc. because those types had so far only declared `get` and `set` accessors, but not any `ref` accessors (which return a pointer).

The main fixes here are:

* Add `ref` accessors to the subscript oeprations on the `RW*` resource types

* Adjust the logic for emitting calls to subscript accessors so that we don't get quite as eager about invoking a `ref` accessor, and instead try to invoke just a `get` or `set` accessor when these will suffice. This is important for Vulkan cross-compilation, where we don't yet support the semantics of our `ref` accessors.

* Add a test case for atomics on a `RWBuffer`

* Fix up `render-test` so that we can specify a format for a buffer resource, which allows us to use things other than `*StructuredBuffer` and `*ByteAddressBuffer`. The work there is probably not complete; I just did what I could to get the test working.

* A bunch of files got whitespace edits thanks to the fact that I'm using editorconfig and others on the project seemingly arent...

* fixup: remove ifdefed-out code

1 files changed, 12 insertions, 3 deletions

diff --git a/tools/render-test/shader-input-layout.cpp b/tools/render-test/shader-input-layout.cpp
index fcf25f376..0257c9b53 100644
--- a/tools/render-test/shader-input-layout.cpp
+++ b/tools/render-test/shader-input-layout.cpp
@@ -1,6 +1,8 @@
 #include "shader-input-layout.h"
 #include "core/token-reader.h"
 
+#include "render.h"
+
 namespace renderer_test
 {
     using namespace Slang;
@@ -177,6 +179,13 @@ namespace renderer_test
                                     else
                                         entry.textureDesc.content = InputTextureContent::Gradient;
                                 }
+                                else if(word == "format")
+                                {
+                                    parser.Read("=");
+                                    auto formatWord = parser.ReadWord();
+                                    if(formatWord == "R_UInt32")
+                                        entry.bufferDesc.format = Format::R_UInt32;
+                                }
                                 if (parser.LookAhead(","))
                                     parser.Read(",");
                                 else
@@ -229,8 +238,8 @@ namespace renderer_test
                 }
             }
         }
-        
-        
+
+
     }
     void generateTextureData(TextureData & output, const InputTextureDesc & inputDesc)
     {
@@ -308,4 +317,4 @@ namespace renderer_test
             }
         }
     }
-}
\ No newline at end of file
+}