From a8d2b6a774ad44d28368caddc44f3b7dbfd89386 Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Sun, 2 Oct 2016 18:17:41 +0200
Subject: [PATCH] Add StdDescriptorSetBufView

---
 vulkano/src/descriptor/descriptor_set/std.rs | 53 ++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/vulkano/src/descriptor/descriptor_set/std.rs b/vulkano/src/descriptor/descriptor_set/std.rs
index 969116a1..78301597 100644
--- a/vulkano/src/descriptor/descriptor_set/std.rs
+++ b/vulkano/src/descriptor/descriptor_set/std.rs
@@ -10,6 +10,8 @@
 use std::cmp;
 use std::sync::Arc;
 
+use buffer::Buffer;
+use buffer::BufferView;
 use buffer::TrackedBuffer;
 use command_buffer::submit::SubmitInfo;
 use command_buffer::sys::PipelineBarrierBuilder;
@@ -165,6 +167,57 @@ pub enum StdDescriptorSetBufTy {
     DynamicUniformBuffer,
 }
 
+pub struct StdDescriptorSetBufView<F, B> where B: Buffer {
+    pub view: Arc<BufferView<F, B>>,
+    pub ty: StdDescriptorSetBufViewTy,
+    pub write: bool,
+    pub stage: PipelineStages,
+    pub access: AccessFlagBits,
+}
+
+unsafe impl<F, B, S> StdDescriptorSetResourcesCollection<S> for StdDescriptorSetBufView<F, B>
+    where B: TrackedBuffer<S>
+{
+    #[inline]
+    unsafe fn transition(&self, states: &mut S, num_command: usize)
+                         -> (usize, PipelineBarrierBuilder)
+    {
+        let trans = self.view.buffer().transition(states, num_command, 0, self.view.buffer().size(),
+                                                  self.write, self.stage, self.access);
+        
+        if let Some(trans) = trans {
+            let n = trans.after_command_num;
+            let mut b = PipelineBarrierBuilder::new();
+            b.add_buffer_barrier_request(&self.view.buffer(), trans);
+            (n, b)
+        } else {
+            (0, PipelineBarrierBuilder::new())
+        }
+    }
+
+    #[inline]
+    unsafe fn finish(&self, in_s: &mut S, out: &mut S) -> PipelineBarrierBuilder {
+        if let Some(trans) = self.view.buffer().finish(in_s, out) {
+            let mut b = PipelineBarrierBuilder::new();
+            b.add_buffer_barrier_request(&self.view.buffer(), trans);
+            b
+        } else {
+            PipelineBarrierBuilder::new()
+        }
+    }
+
+    unsafe fn on_submit<Fe>(&self, _: &S, queue: &Arc<Queue>, fence: Fe) -> SubmitInfo
+        where Fe: FnMut() -> Arc<Fence>
+    {
+        unimplemented!()        // FIXME:
+    }
+}
+
+pub enum StdDescriptorSetBufViewTy {
+    StorageBufferView,
+    UniformBufferView,
+}
+
 macro_rules! tuple_impl {
     ($first:ident, $($rest:ident),+) => (
         unsafe impl<S, $first, $($rest),+> StdDescriptorSetResourcesCollection<S> for ($first $(, $rest)+)