135 lines
3.3 KiB
Rust
135 lines
3.3 KiB
Rust
use std::cell::Cell;
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use smithay::{
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backend::{
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allocator::dmabuf::Dmabuf,
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renderer::{Frame, ImportDma, ImportShm, Renderer, Texture, TextureFilter},
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SwapBuffersError,
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},
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reexports::wayland_server::protocol::wl_buffer,
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utils::{Buffer, Physical, Rectangle, Size, Transform},
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wayland::compositor::SurfaceData,
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};
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pub struct DummyRenderer {}
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impl DummyRenderer {
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pub fn new() -> DummyRenderer {
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DummyRenderer {}
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}
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}
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impl Renderer for DummyRenderer {
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type Error = SwapBuffersError;
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type TextureId = DummyTexture;
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type Frame = DummyFrame;
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fn render<F, R>(
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&mut self,
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_size: Size<i32, Physical>,
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_dst_transform: Transform,
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rendering: F,
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) -> Result<R, Self::Error>
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where
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F: FnOnce(&mut Self, &mut Self::Frame) -> R,
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{
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let mut frame = DummyFrame {};
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Ok(rendering(self, &mut frame))
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}
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fn upscale_filter(&mut self, _filter: TextureFilter) -> Result<(), Self::Error> {
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Ok(())
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}
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fn downscale_filter(&mut self, _filter: TextureFilter) -> Result<(), Self::Error> {
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Ok(())
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}
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}
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impl ImportShm for DummyRenderer {
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fn import_shm_buffer(
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&mut self,
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buffer: &wl_buffer::WlBuffer,
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surface: Option<&SurfaceData>,
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_damage: &[Rectangle<i32, Buffer>],
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) -> Result<<Self as Renderer>::TextureId, <Self as Renderer>::Error> {
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use smithay::wayland::shm::with_buffer_contents;
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let ret = with_buffer_contents(&buffer, |slice, data| {
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let offset = data.offset as u32;
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let width = data.width as u32;
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let height = data.height as u32;
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let stride = data.stride as u32;
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let mut x = 0;
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for h in 0..height {
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for w in 0..width {
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x |= slice[(offset + w + h * stride) as usize];
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}
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}
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if let Some(data) = surface {
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data.data_map.insert_if_missing(|| Cell::new(0u8));
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data.data_map.get::<Cell<u8>>().unwrap().set(x);
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}
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(width, height)
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});
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match ret {
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Ok((width, height)) => Ok(DummyTexture { width, height }),
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Err(e) => Err(SwapBuffersError::TemporaryFailure(Box::new(e))),
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}
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}
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}
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impl ImportDma for DummyRenderer {
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fn import_dmabuf(
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&mut self,
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_dmabuf: &Dmabuf,
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) -> Result<<Self as Renderer>::TextureId, <Self as Renderer>::Error> {
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unimplemented!()
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}
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}
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pub struct DummyFrame {}
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impl Frame for DummyFrame {
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type Error = SwapBuffersError;
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type TextureId = DummyTexture;
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fn clear(&mut self, _color: [f32; 4], _damage: &[Rectangle<i32, Physical>]) -> Result<(), Self::Error> {
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Ok(())
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}
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fn render_texture_from_to(
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&mut self,
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_texture: &Self::TextureId,
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_src: Rectangle<i32, Buffer>,
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_dst: Rectangle<f64, Physical>,
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_damage: &[Rectangle<i32, Buffer>],
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_src_transform: Transform,
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_alpha: f32,
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) -> Result<(), Self::Error> {
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Ok(())
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}
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fn transformation(&self) -> Transform {
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Transform::Normal
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}
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}
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pub struct DummyTexture {
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width: u32,
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height: u32,
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}
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impl Texture for DummyTexture {
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fn width(&self) -> u32 {
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self.width
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}
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fn height(&self) -> u32 {
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self.height
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}
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}
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