1 files changed, 72 insertions, 0 deletions
diff --git a/src/pipeline/graphics/vertex_input/buffers.rs b/src/pipeline/graphics/vertex_input/buffers.rs
new file mode 100644
index 0000000..b7637e6
--- /dev/null
+++ b/src/pipeline/graphics/vertex_input/buffers.rs
@@ -0,0 +1,72 @@
+// Copyright (c) 2016 The vulkano developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT
+// license <LICENSE-MIT or https://opensource.org/licenses/MIT>,
+// at your option. All files in the project carrying such
+// notice may not be copied, modified, or distributed except
+// according to those terms.
+
+use super::VertexBufferDescription;
+use crate::{
+    pipeline::graphics::vertex_input::{
+        IncompatibleVertexDefinitionError, Vertex, VertexDefinition, VertexInputState,
+    },
+    shader::ShaderInterface,
+};
+
+/// A vertex definition for any number of vertex and instance buffers.
+#[deprecated(
+    since = "0.33.0",
+    note = "Use `VertexBufferDescription` directly instead as returned by `Vertex::per_vertex` or `Vertex::per_instance`"
+)]
+#[derive(Clone, Debug, Default)]
+pub struct BuffersDefinition(Vec<VertexBufferDescription>);
+
+#[allow(deprecated)]
+impl BuffersDefinition {
+    /// Constructs a new definition.
+    #[inline]
+    pub fn new() -> Self {
+        BuffersDefinition(Vec::new())
+    }
+
+    /// Adds a new vertex buffer containing elements of type `V` to the definition.
+    pub fn vertex<V: Vertex>(mut self) -> Self {
+        self.0.push(V::per_vertex());
+        self
+    }
+
+    /// Adds a new instance buffer containing elements of type `V` to the definition.
+    pub fn instance<V: Vertex>(mut self) -> Self {
+        self.0.push(V::per_instance());
+        self
+    }
+
+    /// Adds a new instance buffer containing elements of type `V` to the definition, with the
+    /// specified input rate divisor.
+    ///
+    /// This requires the [`vertex_attribute_instance_rate_divisor`] feature has been enabled on
+    /// the device, unless `divisor` is 1.
+    ///
+    /// `divisor` can be 0 if the [`vertex_attribute_instance_rate_zero_divisor`] feature is also
+    /// enabled. This means that every vertex will use the same vertex and instance data.
+    ///
+    /// [`vertex_attribute_instance_rate_divisor`]: crate::device::Features::vertex_attribute_instance_rate_divisor
+    /// [`vertex_attribute_instance_rate_zero_divisor`]: crate::device::Features::vertex_attribute_instance_rate_zero_divisor
+    pub fn instance_with_divisor<V: Vertex>(mut self, divisor: u32) -> Self {
+        self.0.push(V::per_instance_with_divisor(divisor));
+        self
+    }
+}
+
+#[allow(deprecated)]
+unsafe impl VertexDefinition for BuffersDefinition {
+    #[inline]
+    fn definition(
+        &self,
+        interface: &ShaderInterface,
+    ) -> Result<VertexInputState, IncompatibleVertexDefinitionError> {
+        self.0.definition(interface)
+    }
+}