Fixed framebuffer error

* tweaked swap_system acquire_frame() function
* moved fence waiting in acquire_frame()
* cleaned minor details

main.rs

@@ -25,7 +25,7 @@ fn setup_logger() -> Result<(), fern::InitError> {
                 message
             ))
         })
-        .level(log::LevelFilter::Debug)
+        .level(log::LevelFilter::Trace)
         .chain(std::io::stdout())
         .chain(fern::log_file("output.log")?)
         .apply()?;

src/io/winit_window.rs

@@ -13,7 +13,6 @@ use winit::{
     window::{WindowBuilder, Window},
 };
 
-//TODO fix that
 use crate::{
     io::{Output, Input, Key, Signal, ReadError},
     utils::Rect,
@@ -202,8 +201,10 @@ mod tests {
         use std::mem::ManuallyDrop;
 
         let _ = setup_logger();
-        let mut window1 = ManuallyDrop::new(WinitWindow::new("IV", Rect {w: 1280, h: 720}).unwrap());
-        let mut window2 = ManuallyDrop::new(WinitWindow::new("IV 2", Rect {w: 1280, h: 720}).unwrap());
+        let mut window1 = ManuallyDrop::new(WinitWindow::new("IV", 
+                                                             Rect {w: 1280, h: 720}).unwrap());
+        let mut window2 = ManuallyDrop::new(WinitWindow::new("IV 2", 
+                                                             Rect {w: 1280, h: 720}).unwrap());
 
         unsafe {
             ManuallyDrop::drop(&mut window1);

src/lib.rs

@@ -90,7 +90,8 @@ pub fn run() -> Result<(), &'static str> {
 
     //running controller
     let mut controller = Controller::new(vec![subengine_pipeline]);
-    loop {
+    //loop {
+    for _i in 0..10 {
         controller.run();
     }
 
@@ -121,7 +122,7 @@ pub fn run() -> Result<(), &'static str> {
 //                _ => (),
 //    }}}
 //
-//    Ok(())
+    Ok(())
 }
 
 //    let (input_tx, input_rx) = mpsc::channel();

src/renderer.rs

@@ -193,7 +193,6 @@ where
     {
         use gfx_hal::{
             window::AcquireError,
-            device::Device,
             queue::Submission,
         };
 
@@ -213,16 +212,6 @@ where
                 _ => Err("Could not acquire Frame from SwapSystem")?,
         }};
 
-        trace!("Waiting for Frame...");
-        unsafe {
-            let _ = self.gpu.device()
-                .wait_for_fence(&frame.fences[0], !0)
-                .map_err(|_| "Failed to wait for Fence")?;
-            let _ = self.gpu.device()
-                .reset_fence(&frame.fences[0])
-                .map_err(|_| "Failed to reset fence")?;
-        }
-
         trace!("Uploading triangle data...");
         let points = triangle.points_flat();
         self.pipelines[0].write_vertex_buffer(&self.gpu, 0, (&points).to_vec())?; //TODO meh

src/renderer/swap_system.rs

@@ -131,7 +131,7 @@ where
             }
         };
 
-        warn!("Generating hard-coded number of frames !");
+        warn!("Generating hard-coded number of frames ({}) !", frame_nb);
         let mut frames = VecDeque::with_capacity(frame_nb);
         for _ in 0..frame_nb {
             let frame = Frame::new(gpu)
@@ -187,6 +187,22 @@ where
 
     pub fn acquire_frame(&mut self, gpu: &Gpu<B>) -> Result<Frame<B>, AcquireError> {
 
+        //println!("Frame nb : {}", self.frames.len());
+        //TODO frames number diminish sometimes at resize...
+        let mut frame = self.frames.pop_back().unwrap();
+
+        trace!("Waiting for Frame...");
+        unsafe {
+            use gfx_hal::device::Device;
+
+            let _ = gpu.device()
+                .wait_for_fence(&frame.fences[0], !0)
+                .map_err(|_| "Failed to wait for Fence"); //TODO error
+            let _ = gpu.device()
+                .reset_fence(&frame.fences[0])
+                .map_err(|_| "Failed to reset Fence");  //TODO error
+        }
+
         trace!("Acquiring Frame...");
         let image = unsafe {
             match self.surface.acquire_image(core::u64::MAX) {
@@ -197,15 +213,14 @@ where
                 }},
                 Err(err) => return Err(err),
         }};
-        //println!("Frame nb : {}", self.frames.len());
-        //frames number diminish sometimes at resize...
-        let mut frame = self.frames.pop_back().unwrap();
 
         trace!("Creating Framebuffer...");
         let framebuffer = unsafe {
             use gfx_hal::device::Device;
             use std::borrow::Borrow;
 
+            //frame.command_buffer.reset(true); //TODO may be needed at some point...
+
             gpu.device()
                 .create_framebuffer(&self.render_pass,
                                     vec![image.borrow()],

src/renderer/swap_system/frame.rs

@@ -71,7 +71,7 @@ where
             let fences = vec!(
                 gpu.device()
                 .create_fence(true)
-                .map_err(|_| "Could not create Semaphore")?);
+                .map_err(|_| "Could not create Fence")?);
             
             (wait_semaphores, signal_semaphores, fences)
         };
@@ -90,7 +90,7 @@ where
         Ok( Frame {
             wait_semaphores,
             signal_semaphores,
-            fences,
+           fences,
             command_buffer: ManuallyDrop::new(command_buffer),
             image_view: None,
             framebuffer: None,