Vulkan update/NVAPI support (#1511)

* First pass at incorporating nvapi into test harness.

* D3d12 Atomic Float Add via NVAPI working

* Dx12 atomic float appears to work.

* Atomic float add on Dx12.

* Added atomic64 feature addition to vk.
Fix correct output for atomic-float-byte-address.slang

* Disable atomic float failing tests.

* Upgraded VK headers.

* Detect atomic float availability on VK.

* Try to get test working for in64 atomic.

* Made HLSL prelude controlled via the render-test requirements.

* Added -enable-nvapi to premake.

* Fix D3D12Renderer when NVAPI is not available.

* Small improvements to VKRenderer.

* Improve atomic documentation in target-compatibility.md.

1 files changed, 7 insertions, 0 deletions

diff --git a/tools/gfx/open-gl/render-gl.cpp b/tools/gfx/open-gl/render-gl.cpp
index ee3977a74..5f16f07bc 100644
--- a/tools/gfx/open-gl/render-gl.cpp
+++ b/tools/gfx/open-gl/render-gl.cpp
@@ -1,6 +1,8 @@
 // render-gl.cpp
 #include "render-gl.h"
 
+#include "../nvapi/nvapi-util.h"
+
 //WORKING:#include "options.h"
 #include "../render.h"
 
@@ -715,6 +717,11 @@ SlangResult GLRenderer::initialize(const Desc& desc, void* inWindowHandle)
         }
     }
 
+    if (m_desc.requiredFeatures.indexOf("nvapi") >= 0 && SLANG_SUCCEEDED(NVAPIUtil::initialize()))
+    {
+        m_features.add("nvapi");
+    }
+
     auto extensions = glGetString(GL_EXTENSIONS);
 
     // Load each of our extension functions by name