feat(render): added vulkan initialisation, etc.

1 files changed, 51 insertions, 0 deletions

diff --git a/stockton-render/src/draw/frame.rs b/stockton-render/src/draw/frame.rs
new file mode 100644
index 0000000..d1e617c
--- /dev/null
+++ b/stockton-render/src/draw/frame.rs
@@ -0,0 +1,51 @@
+// Copyright (C) 2019 Oscar Shrimpton  
+
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Helper struct. Keeps the data for each frame 'in flight' seperate instead of linked lists.
+use hal::{Device as DeviceTrait};
+use hal::command::CommandBuffer;
+use hal::Graphics;
+use back::{Backend};
+use hal::pool::{CommandPool};
+
+
+/// Helper struct for a frame that can be in flight
+pub struct FrameCell {
+	/// How we ask the GPU to do work for us.
+	pub command_buffer: CommandBuffer<Backend, Graphics>,
+
+	/// Signalled once an image is acquired to draw on.
+	pub image_available: <Backend as hal::Backend>::Semaphore,
+
+	/// Signalled once the frame is done being drawn.
+	pub render_finished: <Backend as hal::Backend>::Semaphore,
+
+	/// Signalled once the frame is presented.
+	pub frame_presented: <Backend as hal::Backend>::Fence
+}
+
+impl FrameCell {
+	/// Safely deinitialises all the objects in this struct.
+	/// Use this instead of drop.
+	pub unsafe fn destroy(self, device: &<Backend as hal::Backend>::Device, command_pool: &mut CommandPool<Backend, Graphics>) {
+		// fences & semaphores
+		device.destroy_semaphore(self.image_available);
+		device.destroy_semaphore(self.render_finished);
+		device.destroy_fence(self.frame_presented);
+
+		// command buffer
+		command_pool.free(vec![self.command_buffer]);
+	}
+}
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