refactor view/scene to separate modules

src/vr.rs

@@ -87,12 +87,18 @@ impl<N: Copy> AsMatrix4<N> for [[N; 4]; 4] {
     }
 }
 
+pub struct EyeBuffer<T, D>
+  where T: gfx::format::RenderFormat + gfx::format::TextureFormat,
+        D: gfx::format::DepthFormat + gfx::format::TextureFormat {
+
+  pub tex: gfx::handle::Texture<GLResources, T::Surface>,
+  pub target: gfx::handle::RenderTargetView<GLResources, T>,
+  pub depth: gfx::handle::DepthStencilView<GLResources, D>,
+}
+
 pub fn create_eyebuffer<T, D>(factory: &mut gfx_device_gl::Factory,
                               size: vr::common::Size)
-                              -> Result<(gfx::handle::Texture<GLResources, T::Surface>,
-                                         gfx::handle::RenderTargetView<GLResources, T>,
-                                         gfx::handle::DepthStencilView<GLResources, D>),
-                                        gfx::CombinedError>
+                              -> Result<EyeBuffer<T, D>, gfx::CombinedError>
     where T: gfx::format::RenderFormat + gfx::format::TextureFormat,
           D: gfx::format::DepthFormat + gfx::format::TextureFormat {
     let tex = try!(factory.create_texture(
@@ -104,5 +110,5 @@ pub fn create_eyebuffer<T, D>(factory: &mut gfx_device_gl::Factory,
     let tgt = try!(factory.view_texture_as_render_target(&tex, 0, None));
     let depth = try!(factory.create_depth_stencil_view_only(size.width as tex::Size,
                                                             size.height as tex::Size));
-    Ok((tex, tgt, depth))
+  Ok(EyeBuffer { tex: tex, target: tgt, depth: depth })
 }