[update] frame buffer implementation.

Author: vmarcella

crates/lambda-platform/src/gfx/command.rs

@@ -154,7 +154,7 @@ impl<'command_pool, RenderBackend: gfx_hal::Backend>
           viewport,
         } => self.command_buffer.begin_render_pass(
           render_pass.internal_render_pass(),
-          super::framebuffer::internal::frame_buffer_for(&frame_buffer),
+          frame_buffer.internal_frame_buffer(),
           viewport.internal_viewport().rect,
           vec![gfx_hal::command::RenderAttachmentInfo::<RenderBackend> {
             image_view: super::surface::internal::borrow_surface_image_for(

crates/lambda-platform/src/gfx/framebuffer.rs

@@ -25,6 +25,13 @@ impl<RenderBackend: gfx_hal::Backend> Framebuffer<RenderBackend> {
     }
   }
 }
+
+impl<RenderBackend: gfx_hal::Backend> Framebuffer<RenderBackend> {
+  /// Retrieve a reference to the internal frame buffer.
+  pub(super) fn internal_frame_buffer(&self) -> &RenderBackend::Framebuffer {
+    return &self.frame_buffer;
+  }
+}
 pub struct FramebufferBuilder {}
 
 impl FramebufferBuilder {