Add buffers_list and images_list methods to descriptor sets

vulkano/src/descriptor/descriptor_set/collection.rs

@@ -7,10 +7,13 @@
 // notice may not be copied, modified, or distributed except
 // according to those terms.
 
+use std::iter;
+use buffer::Buffer;
 use descriptor::descriptor::DescriptorDesc;
 use descriptor::descriptor_set::DescriptorSet;
 use descriptor::descriptor_set::DescriptorSetDesc;
 use descriptor::descriptor_set::UnsafeDescriptorSet;
+use image::Image;
 
 /// A collection of descriptor set objects.
 pub unsafe trait DescriptorSetsCollection {
@@ -31,6 +34,12 @@ pub unsafe trait DescriptorSetsCollection {
     ///
     /// Returns `None` if out of range.
     fn descriptor(&self, set: usize, binding: usize) -> Option<DescriptorDesc>;
+
+    /// Returns the list of buffers used by this descriptor set. Includes buffer views.
+    fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a>;
+
+    /// Returns the list of images used by this descriptor set. Includes image views.
+    fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a>;
 }
 
 unsafe impl DescriptorSetsCollection for () {
@@ -53,6 +62,16 @@ unsafe impl DescriptorSetsCollection for () {
     fn descriptor(&self, set: usize, binding: usize) -> Option<DescriptorDesc> {
         None
     }
+
+    #[inline]
+    fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a> {
+        Box::new(iter::empty())
+    }
+
+    #[inline]
+    fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a> {
+        Box::new(iter::empty())
+    }
 }
 
 unsafe impl<T> DescriptorSetsCollection for T
@@ -86,6 +105,16 @@ unsafe impl<T> DescriptorSetsCollection for T
             _ => None
         }
     }
+
+    #[inline]
+    fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a> {
+        DescriptorSet::buffers_list(self)
+    }
+
+    #[inline]
+    fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a> {
+        DescriptorSet::images_list(self)
+    }
 }
 
 macro_rules! impl_collection {
@@ -162,6 +191,26 @@ macro_rules! impl_collection {
 
                 None
             }
+
+            #[inline]
+            fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a> {
+                let &(first, $(ref $others,)*) = self;
+                let iter = first.buffers_list();
+                $(
+                    let iter = iter.chain($others.buffers_list());
+                )*
+                Box::new(iter)
+            }
+
+            #[inline]
+            fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a> {
+                let &(first, $(ref $others,)*) = self;
+                let iter = first.images_list();
+                $(
+                    let iter = iter.chain($others.images_list());
+                )*
+                Box::new(iter)
+            }
         }
 
         impl_collection!($($others),*);

vulkano/src/descriptor/descriptor_set/mod.rs

@@ -35,7 +35,9 @@
 //! - The `DescriptorSetsCollection` trait is implemented on collections of types that implement
 //!   `DescriptorSet`. It is what you pass to the draw functions.
 
+use buffer::Buffer;
 use descriptor::descriptor::DescriptorDesc;
+use image::Image;
 use SafeDeref;
 
 pub use self::collection::DescriptorSetsCollection;
@@ -65,13 +67,31 @@ mod unsafe_layout;
 pub unsafe trait DescriptorSet: DescriptorSetDesc {
     /// Returns the inner `UnsafeDescriptorSet`.
     fn inner(&self) -> &UnsafeDescriptorSet;
+
+    /// Returns the list of buffers used by this descriptor set. Includes buffer views.
+    // TODO: meh for boxing
+    fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a>;
+
+    /// Returns the list of images used by this descriptor set. Includes image views.
+    // TODO: meh for boxing
+    fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a>;
 }
 
 unsafe impl<T> DescriptorSet for T where T: SafeDeref, T::Target: DescriptorSet {
     #[inline]
     fn inner(&self) -> &UnsafeDescriptorSet {
         (**self).inner()
     }
+
+    #[inline]
+    fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a> {
+        (**self).buffers_list()
+    }
+
+    #[inline]
+    fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a> {
+        (**self).images_list()
+    }
 }
 
 /// Trait for objects that describe the layout of the descriptors of a set.

vulkano/src/descriptor/descriptor_set/simple.rs

@@ -24,6 +24,7 @@ use descriptor::descriptor_set::StdDescriptorPool;
 use descriptor::pipeline_layout::PipelineLayoutAbstract;
 use device::Device;
 use device::DeviceOwned;
+use image::Image;
 use image::ImageView;
 use image::sys::Layout;
 use sampler::Sampler;
@@ -65,6 +66,16 @@ unsafe impl<R, P> DescriptorSet for SimpleDescriptorSet<R, P> where P: Descripto
     fn inner(&self) -> &UnsafeDescriptorSet {
         self.inner.inner()
     }
+
+    #[inline]
+    fn buffers_list<'a>(&'a self) -> Box<Iterator<Item = &'a Buffer> + 'a> {
+        unimplemented!()
+    }
+
+    #[inline]
+    fn images_list<'a>(&'a self) -> Box<Iterator<Item = &'a Image> + 'a> {
+        unimplemented!()
+    }
 }
 
 unsafe impl<R, P> DescriptorSetDesc for SimpleDescriptorSet<R, P> where P: DescriptorPool {