Vk: use Containers::Iterable in DescriptorSetLayoutCreateInfo.

Same as the previous commit in MeshTools -- allows to pass a
Containers::Array<DescriptorSetLayoutBinding> to it without having to
form a list of references first.

src/Magnum/Vk/DescriptorSetLayout.cpp

@@ -28,6 +28,7 @@
 
 #include <Corrade/Containers/ArrayView.h>
 #include <Corrade/Containers/AnyReference.h>
+#include <Corrade/Containers/Iterable.h>
 #include <Corrade/Utility/Algorithms.h>
 
 #include "Magnum/Vk/Assert.h"
@@ -90,7 +91,7 @@ DescriptorSetLayoutBinding& DescriptorSetLayoutBinding::operator=(DescriptorSetL
     return *this;
 }
 
-DescriptorSetLayoutCreateInfo::DescriptorSetLayoutCreateInfo(const Containers::ArrayView<const Containers::AnyReference<const DescriptorSetLayoutBinding>> bindings, const Flags flags): _info{} {
+DescriptorSetLayoutCreateInfo::DescriptorSetLayoutCreateInfo(const Containers::Iterable<const DescriptorSetLayoutBinding> bindings, const Flags flags): _info{} {
     /* Check the total count of immutable samplers to allocate them all in a
        contiguous memory location. Also check if we have any binding flags. If
        yes, we have to create an additional array and put a structure into the
@@ -146,7 +147,7 @@ DescriptorSetLayoutCreateInfo::DescriptorSetLayoutCreateInfo(const Containers::A
     }
 }
 
-DescriptorSetLayoutCreateInfo::DescriptorSetLayoutCreateInfo(const std::initializer_list<Containers::AnyReference<const DescriptorSetLayoutBinding>> bindings, const Flags flags): DescriptorSetLayoutCreateInfo{Containers::arrayView(bindings), flags} {}
+DescriptorSetLayoutCreateInfo::DescriptorSetLayoutCreateInfo(const std::initializer_list<Containers::AnyReference<const DescriptorSetLayoutBinding>> bindings, const Flags flags): DescriptorSetLayoutCreateInfo{Containers::Iterable<const DescriptorSetLayoutBinding>{bindings}, flags} {}
 
 DescriptorSetLayoutCreateInfo::DescriptorSetLayoutCreateInfo(NoInitT) noexcept {}
 

src/Magnum/Vk/DescriptorSetLayoutCreateInfo.h

@@ -46,6 +46,14 @@
 #include "Magnum/Vk/Vk.h"
 #include "Magnum/Vk/Vulkan.h"
 
+#ifdef MAGNUM_BUILD_DEPRECATED
+/* DescriptorSetLayoutCreateInfo constructor used to take an
+   ArrayView<Reference<DescriptorSetLayoutBinding>>, now it's through the
+   Iterable class. Include it explicitly until people learn to include it
+   themselves. */
+#include <Corrade/Containers/Iterable.h>
+#endif
+
 namespace Magnum { namespace Vk {
 
 /**
@@ -315,8 +323,12 @@ class MAGNUM_VK_EXPORT DescriptorSetLayoutCreateInfo {
          * -    `pBindingFlags` to a list of all
          *      @ref DescriptorSetLayoutBinding::flags() from @p bindings
          */
-        explicit DescriptorSetLayoutCreateInfo(Containers::ArrayView<const Containers::AnyReference<const DescriptorSetLayoutBinding>> bindings, Flags flags = {});
+        explicit DescriptorSetLayoutCreateInfo(Containers::Iterable<const DescriptorSetLayoutBinding> bindings, Flags flags = {});
+
         /** @overload */
+        /* Iterable takes std::initializer_list itself but having it also here
+           allows to do stuff like `DescriptorSetLayoutCreateInfo{a, b}` and
+           (admittedly weird) `DescriptorSetLayoutCreateInfo{}` as well. */
         explicit DescriptorSetLayoutCreateInfo(std::initializer_list<Containers::AnyReference<const DescriptorSetLayoutBinding>> bindings, Flags flags = {});
 
         /**

src/Magnum/Vk/Test/DescriptorSetLayoutTest.cpp

@@ -24,6 +24,7 @@
 */
 
 #include <new>
+#include <Corrade/Containers/Iterable.h>
 #include <Corrade/TestSuite/Tester.h>
 
 #include "Magnum/Vk/DescriptorSetLayoutCreateInfo.h"

src/Magnum/Vk/Test/DescriptorSetLayoutVkTest.cpp

@@ -23,6 +23,8 @@
     DEALINGS IN THE SOFTWARE.
 */
 
+#include <Corrade/Containers/Iterable.h>
+
 #include "Magnum/Vk/DescriptorSetLayoutCreateInfo.h"
 #include "Magnum/Vk/DescriptorType.h"
 #include "Magnum/Vk/Result.h"