Split render_helpers.rs

1 files changed, 73 insertions, 0 deletions

diff --git a/src/render_helpers/renderer.rs b/src/render_helpers/renderer.rs
new file mode 100644
index 00000000..7f85b66d
--- /dev/null
+++ b/src/render_helpers/renderer.rs
@@ -0,0 +1,73 @@
+use smithay::backend::allocator::dmabuf::Dmabuf;
+use smithay::backend::renderer::gles::{GlesFrame, GlesRenderer, GlesTexture};
+use smithay::backend::renderer::{
+    Bind, ExportMem, ImportAll, ImportMem, Offscreen, Renderer, Texture,
+};
+
+use crate::backend::tty::{TtyFrame, TtyRenderer};
+
+/// Trait with our main renderer requirements to save on the typing.
+pub trait NiriRenderer:
+    ImportAll
+    + ImportMem
+    + ExportMem
+    + Bind<Dmabuf>
+    + Offscreen<GlesTexture>
+    + Renderer<TextureId = Self::NiriTextureId, Error = Self::NiriError>
+    + AsGlesRenderer
+{
+    // Associated types to work around the instability of associated type bounds.
+    type NiriTextureId: Texture + Clone + 'static;
+    type NiriError: std::error::Error
+        + Send
+        + Sync
+        + From<<GlesRenderer as Renderer>::Error>
+        + 'static;
+}
+
+impl<R> NiriRenderer for R
+where
+    R: ImportAll + ImportMem + ExportMem + Bind<Dmabuf> + Offscreen<GlesTexture> + AsGlesRenderer,
+    R::TextureId: Texture + Clone + 'static,
+    R::Error: std::error::Error + Send + Sync + From<<GlesRenderer as Renderer>::Error> + 'static,
+{
+    type NiriTextureId = R::TextureId;
+    type NiriError = R::Error;
+}
+
+/// Trait for getting the underlying `GlesRenderer`.
+pub trait AsGlesRenderer {
+    fn as_gles_renderer(&mut self) -> &mut GlesRenderer;
+}
+
+impl AsGlesRenderer for GlesRenderer {
+    fn as_gles_renderer(&mut self) -> &mut GlesRenderer {
+        self
+    }
+}
+
+impl<'render, 'alloc> AsGlesRenderer for TtyRenderer<'render, 'alloc> {
+    fn as_gles_renderer(&mut self) -> &mut GlesRenderer {
+        self.as_mut()
+    }
+}
+
+/// Trait for getting the underlying `GlesFrame`.
+pub trait AsGlesFrame<'frame>
+where
+    Self: 'frame,
+{
+    fn as_gles_frame(&mut self) -> &mut GlesFrame<'frame>;
+}
+
+impl<'frame> AsGlesFrame<'frame> for GlesFrame<'frame> {
+    fn as_gles_frame(&mut self) -> &mut GlesFrame<'frame> {
+        self
+    }
+}
+
+impl<'render, 'alloc, 'frame> AsGlesFrame<'frame> for TtyFrame<'render, 'alloc, 'frame> {
+    fn as_gles_frame(&mut self) -> &mut GlesFrame<'frame> {
+        self.as_mut()
+    }
+}