Remove resource `Usage` from `gfx` interface. (#1813)

* Fix `model-viewer` crash when using Vulkan.

Fixing an issue in shader object layout creation for to make sure a correct descriptor set layout is calculated for types that need an implicit constant buffer.

* Fix formatting.

* Fixes.

* Fix memory leak in vulkan.

* Remove resource `Usage` from `gfx` interface.

1 files changed, 6 insertions, 3 deletions

diff --git a/examples/gpu-printing/main.cpp b/examples/gpu-printing/main.cpp
index 265b4c5ff..11a1553a3 100644
--- a/examples/gpu-printing/main.cpp
+++ b/examples/gpu-printing/main.cpp
@@ -103,11 +103,14 @@ Result execute()
     size_t printBufferSize = 4 * 1024; // use a small-ish (4KB) buffer for print output
 
     IBufferResource::Desc printBufferDesc;
-    printBufferDesc.init(printBufferSize);
+    printBufferDesc.type = IResource::Type::Buffer;
+    printBufferDesc.sizeInBytes = printBufferSize;
     printBufferDesc.elementSize = sizeof(uint32_t);
+    printBufferDesc.defaultState = ResourceState::UnorderedAccess;
+    printBufferDesc.allowedStates = ResourceStateSet(
+        ResourceState::CopySource, ResourceState::CopyDestination, ResourceState::UnorderedAccess);
     printBufferDesc.cpuAccessFlags = IResource::AccessFlag::Read; // | Resource::AccessFlag::Write;
-    auto printBuffer =
-        gDevice->createBufferResource(IResource::Usage::UnorderedAccess, printBufferDesc);
+    auto printBuffer = gDevice->createBufferResource(printBufferDesc);
 
     IResourceView::Desc printBufferViewDesc;
     printBufferViewDesc.type = IResourceView::Type::UnorderedAccess;