drm/renderer: Fixup convertion into SwapBuffersError

src/backend/drm/error.rs

@@ -1,6 +1,7 @@
 //use crate::backend::graphics::SwapBuffersError;
 use drm::control::{connector, crtc, plane, Mode, RawResourceHandle};
 use std::path::PathBuf;
+use crate::backend::SwapBuffersError;
 
 /// Errors thrown by the [`DrmDevice`](::backend::drm::DrmDevice)
 /// and the [`DrmSurface`](::backend::drm::DrmSurface).
@@ -59,14 +60,13 @@ pub enum Error {
     TestFailed(crtc::Handle),
 }
 
-/*
 impl Into<SwapBuffersError> for Error {
     fn into(self) -> SwapBuffersError {
         match self {
             x @ Error::DeviceInactive => SwapBuffersError::TemporaryFailure(Box::new(x)),
             Error::Access {
                 errmsg, dev, source, ..
-            } if match source.get_ref() {
+            } if match source {
                 drm::SystemError::PermissionDenied => true,
                 drm::SystemError::Unknown {
                     errno: nix::errno::Errno::EBUSY,
@@ -82,5 +82,4 @@ impl Into<SwapBuffersError> for Error {
             x => SwapBuffersError::ContextLost(Box::new(x)),
         }
     }
-}
+}
-*/

src/backend/renderer/gles2/mod.rs

@@ -6,6 +6,7 @@ use std::sync::Arc;
 use cgmath::{prelude::*, Matrix3, Vector2};
 
 mod shaders;
+use crate::backend::SwapBuffersError;
 use crate::backend::allocator::{dmabuf::{Dmabuf, WeakDmabuf}, Format};
 use crate::backend::egl::{EGLContext, EGLSurface, ffi::egl::types::EGLImage};
 use super::{Renderer, Frame, Bind, Unbind, Transform, Texture};
@@ -104,6 +105,24 @@ pub enum Gles2Error {
     BufferAccessError(crate::wayland::shm::BufferAccessError),
 }
 
+impl From<Gles2Error> for SwapBuffersError {
+    fn from(err: Gles2Error) -> SwapBuffersError {
+        match err {
+            x @ Gles2Error::ShaderCompileError(_)
+            | x @ Gles2Error::ProgramLinkError
+            | x @ Gles2Error::GLFunctionLoaderError
+            | x @ Gles2Error::GLExtensionNotSupported(_)
+                => SwapBuffersError::ContextLost(Box::new(x)),
+            Gles2Error::ContextActivationError(err) => err.into(),
+            x @ Gles2Error::FramebufferBindingError
+            | x @ Gles2Error::BindBufferEGLError(_)
+            | x @ Gles2Error::UnsupportedPixelFormat(_)
+            | x @ Gles2Error::BufferAccessError(_)
+                => SwapBuffersError::TemporaryFailure(Box::new(x)),
+        }
+    }
+}
+
 extern "system" fn gl_debug_log(_source: ffi::types::GLenum,
                            gltype: ffi::types::GLenum,
                            _id: ffi::types::GLuint,