Merge pull request #2095 from billhollings/VK_EXT_layer_settings

Add support for VK_EXT_layer_settings extension

Common/MVKCommonEnvironment.h

@@ -31,8 +31,8 @@ extern "C" {
  * Compiler build setting that ensures a definite value for whether this
  * build is a debug build or not.
  *
- * If the standard DEBUG build setting is defined, MVK_DEBUG is set to true,
- * otherwise, it is set to false.
+ * If the standard DEBUG build setting is defined, MVK_CONFIG_DEBUG is
+ * set to true, otherwise, it is set to false.
  */
 #ifndef MVK_DEBUG
 #	ifdef DEBUG
@@ -41,6 +41,9 @@ extern "C" {
 #		define MVK_DEBUG			0
 #	endif
 #endif
+#ifndef MVK_CONFIG_DEBUG
+#	define MVK_CONFIG_DEBUG			MVK_DEBUG
+#endif
 
 /** Building for macOS. */
 #ifndef MVK_MACOS

Demos/README.md

@@ -24,19 +24,19 @@ Table of Contents
 *Cube*
 ------
 
-The basic canonical *Cube* sample app from the 
-[*Vulkan-Tools* repository](https://github.com/KhronosGroup/Vulkan-Tools) 
+The basic canonical *Cube* sample app from the
+[*Vulkan-Tools* repository](https://github.com/KhronosGroup/Vulkan-Tools)
 is included in this **MoltenVK** package.
 
 This demo renders a basic textured cube that spins in place.
 
-The demo can be found in the `Cube` folder, and in the `Cube` group in the 
+The demo can be found in the `Cube` folder, and in the `Cube` group in the
 *Xcode Project Navigator* in the `Demos.xcworkspace` *Xcode* workspace.
 
-To run this demo, run the `Cube-iOS`, `Cube-tvOS`, or `Cube-macOS` *Scheme* from within *Xcode*. 
+To run this demo, run the `Cube-iOS`, `Cube-tvOS`, or `Cube-macOS` *Scheme* from within *Xcode*.
 In addition to devices, this demo will also run on the `iOS Simulator` or `tvOS Simulator` destinations.
 
-The `Cube` demo is a simple example of installing **MoltenVK** as an `XCFramework` that is 
+The `Cube` demo is a simple example of installing **MoltenVK** as an `XCFramework` that is
 statically linked to the application. It supports all platforms, including _Mac Catalyst_, _iOS
 Simulator_ and _tvOS Simulator_, and all architectures including _Apple Silicon_.
 
@@ -46,5 +46,5 @@ Simulator_ and _tvOS Simulator_, and all architectures including _Apple Silicon_
 *Khronos Vulkan Samples*
 ----------------------
 
-*Khronos Group* provides a [repository](https://github.com/KhronosGroup/Vulkan-Samples) 
+*Khronos Group* provides a [repository](https://github.com/KhronosGroup/Vulkan-Samples)
 containing a full suite of standard *Vulkan* samples that run on **MoltenVK** on *macOS*.