Merge pull request #460 from Smithay/feature/egl_userdata

anvil/src/winit.rs

@@ -168,7 +168,14 @@ pub fn run_winit(log: Logger) {
                 .and_then(|_| {
                     backend
                         .renderer()
-                        .render(size, Transform::Flipped180, |renderer, frame| {
+                        .render(
+                            output_geometry
+                                .size
+                                .to_f64()
+                                .to_physical(output_scale as f64)
+                                .to_i32_round(),
+                            Transform::Flipped180,
+                            |renderer, frame| {
                                 render_layers_and_windows(
                                     renderer,
                                     frame,
@@ -238,7 +245,8 @@ pub fn run_winit(log: Logger) {
                                 }
 
                                 Ok(())
-                        })
+                            },
+                        )
                         .map_err(Into::<SwapBuffersError>::into)
                         .and_then(|x| x)
                 })

src/backend/egl/context.rs

@@ -1,12 +1,21 @@
 //! EGL context related structs
-use std::collections::HashSet;
-use std::os::raw::c_int;
-use std::sync::atomic::Ordering;
+use std::{
+    collections::HashSet,
+    os::raw::c_int,
+    sync::{atomic::Ordering, Arc},
+};
 
 use super::{ffi, wrap_egl_call, Error, MakeCurrentError};
-use crate::backend::allocator::Format as DrmFormat;
-use crate::backend::egl::display::{EGLDisplay, PixelFormat};
-use crate::backend::egl::EGLSurface;
+use crate::{
+    backend::{
+        allocator::Format as DrmFormat,
+        egl::{
+            display::{EGLDisplay, PixelFormat},
+            EGLSurface,
+        },
+    },
+    utils::user_data::UserDataMap,
+};
 
 use slog::{info, o, trace};
 
@@ -17,6 +26,7 @@ pub struct EGLContext {
     pub(crate) display: EGLDisplay,
     config_id: ffi::egl::types::EGLConfig,
     pixel_format: Option<PixelFormat>,
+    user_data: Arc<UserDataMap>,
 }
 // EGLContexts can be moved between threads safely
 unsafe impl Send for EGLContext {}
@@ -162,6 +172,11 @@ impl EGLContext {
             display: display.clone(),
             config_id,
             pixel_format,
+            user_data: if let Some(shared) = shared {
+                shared.user_data.clone()
+            } else {
+                Arc::new(UserDataMap::default())
+            },
         })
     }
 
@@ -241,6 +256,21 @@ impl EGLContext {
     pub fn dmabuf_texture_formats(&self) -> &HashSet<DrmFormat> {
         &self.display.dmabuf_import_formats
     }
+
+    /// Retrieve user_data associated with this context
+    ///
+    /// *Note:* UserData is shared between shared context, if constructed with
+    /// [`new_shared`](EGLContext::new_shared) or [`new_shared_with_config`](EGLContext::new_shared_with_config).
+    pub fn user_data(&self) -> &UserDataMap {
+        &*self.user_data
+    }
+
+    /// Get a raw handle to the underlying context.
+    ///
+    /// The pointer will become invalid, when this struct is destroyed.
+    pub fn get_context_handle(&self) -> ffi::egl::types::EGLContext {
+        self.context
+    }
 }
 
 impl Drop for EGLContext {

src/backend/egl/device.rs

@@ -173,7 +173,9 @@ impl EGLDevice {
     }
 
     /// Returns the pointer to the raw [`EGLDevice`].
-    pub fn inner(&self) -> *const c_void {
+    ///
+    /// The pointer will become invalid, when this struct is destroyed.
+    pub fn get_device_handle(&self) -> *const c_void {
         self.inner
     }
 }

src/backend/egl/surface.rs

@@ -172,6 +172,16 @@ impl EGLSurface {
     pub fn resize(&self, width: i32, height: i32, dx: i32, dy: i32) -> bool {
         self.native.resize(width, height, dx, dy)
     }
+
+    /// Get a raw handle to the underlying surface
+    ///
+    /// *Note*: The surface might get dynamically recreated during swap-buffers
+    /// causing the pointer to become invalid.
+    ///
+    /// The pointer will become invalid, when this struct is destroyed.
+    pub fn get_surface_handle(&self) -> ffi::egl::types::EGLSurface {
+        self.surface.load(Ordering::SeqCst)
+    }
 }
 
 impl Drop for EGLSurface {

src/backend/renderer/gles2/mod.rs

@@ -178,6 +178,8 @@ pub struct Gles2Renderer {
     // This field is only accessed if the image or wayland_frontend features are active
     #[allow(dead_code)]
     destruction_callback_sender: Sender<CleanupResource>,
+    min_filter: TextureFilter,
+    max_filter: TextureFilter,
     logger_ptr: Option<*mut ::slog::Logger>,
     logger: ::slog::Logger,
     _not_send: *mut (),
@@ -186,11 +188,14 @@ pub struct Gles2Renderer {
 /// Handle to the currently rendered frame during [`Gles2Renderer::render`](Renderer::render)
 pub struct Gles2Frame {
     current_projection: Matrix3<f32>,
+    transform: Transform,
     gl: ffi::Gles2,
     tex_programs: [Gles2TexProgram; shaders::FRAGMENT_COUNT],
     solid_program: Gles2SolidProgram,
     vbos: [ffi::types::GLuint; 2],
     size: Size<i32, Physical>,
+    min_filter: TextureFilter,
+    max_filter: TextureFilter,
 }
 
 impl fmt::Debug for Gles2Frame {
@@ -200,6 +205,8 @@ impl fmt::Debug for Gles2Frame {
             .field("tex_programs", &self.tex_programs)
             .field("solid_program", &self.solid_program)
             .field("size", &self.size)
+            .field("min_filter", &self.min_filter)
+            .field("max_filter", &self.max_filter)
             .finish_non_exhaustive()
     }
 }
@@ -215,6 +222,8 @@ impl fmt::Debug for Gles2Renderer {
             .field("solid_program", &self.solid_program)
             // ffi::Gles2 does not implement Debug
             .field("egl", &self.egl)
+            .field("min_filter", &self.min_filter)
+            .field("max_filter", &self.max_filter)
             .field("logger", &self.logger)
             .finish()
     }
@@ -521,7 +530,7 @@ impl Gles2Renderer {
         gl.BindBuffer(ffi::ARRAY_BUFFER, 0);
 
         let (tx, rx) = channel();
-        let mut renderer = Gles2Renderer {
+        let renderer = Gles2Renderer {
             gl,
             egl: context,
             #[cfg(all(feature = "wayland_frontend", feature = "use_system_lib"))]
@@ -537,12 +546,12 @@ impl Gles2Renderer {
             destruction_callback: rx,
             destruction_callback_sender: tx,
             vbos,
+            min_filter: TextureFilter::Nearest,
+            max_filter: TextureFilter::Linear,
             logger_ptr,
             logger: log,
             _not_send: std::ptr::null_mut(),
         };
-        renderer.downscale_filter(TextureFilter::Nearest)?;
-        renderer.upscale_filter(TextureFilter::Linear)?;
         renderer.egl.unbind()?;
         Ok(renderer)
     }
@@ -635,7 +644,6 @@ impl ImportShm for Gles2Renderer {
 
             unsafe {
                 self.gl.BindTexture(ffi::TEXTURE_2D, texture.0.texture);
-
                 self.gl
                     .TexParameteri(ffi::TEXTURE_2D, ffi::TEXTURE_WRAP_S, ffi::CLAMP_TO_EDGE as i32);
                 self.gl
@@ -1017,12 +1025,25 @@ impl Drop for Gles2Renderer {
 }
 
 impl Gles2Renderer {
+    /// Get access to the underlying [`EGLContext`].
+    ///
+    /// *Note*: Modifying the context state, might result in rendering issues.
+    /// The context state is considerd an implementation detail
+    /// and no guarantee is made about what can or cannot be changed.
+    /// To make sure a certain modification does not interfere with
+    /// the renderer's behaviour, check the source.
+    pub fn egl_context(&self) -> &EGLContext {
+        &self.egl
+    }
+
     /// Run custom code in the GL context owned by this renderer.
     ///
-    /// *Note*: Any changes to the GL state should be restored at the end of this function.
-    /// Otherwise this can lead to rendering errors while using functions of this renderer.
-    /// Relying on any state set by the renderer may break on any smithay update as the
-    /// details about how this renderer works are considered an implementation detail.
+    /// The OpenGL state of the renderer is considered an implementation detail
+    /// and no guarantee is made about what can or cannot be changed,
+    /// as such you should reset everything you change back to its previous value
+    /// or check the source code of the version of Smithay you are using to ensure
+    /// your changes don't interfere with the renderer's behavior.
+    /// Doing otherwise can lead to rendering errors while using other functions of this renderer.
     pub fn with_context<F, R>(&mut self, func: F) -> Result<R, Gles2Error>
     where
         F: FnOnce(&mut Self, &ffi::Gles2) -> R,
@@ -1039,31 +1060,11 @@ impl Renderer for Gles2Renderer {
     type Frame = Gles2Frame;
 
     fn downscale_filter(&mut self, filter: TextureFilter) -> Result<(), Self::Error> {
-        self.make_current()?;
-        unsafe {
-            self.gl.TexParameteri(
-                ffi::TEXTURE_2D,
-                ffi::TEXTURE_MIN_FILTER,
-                match filter {
-                    TextureFilter::Nearest => ffi::NEAREST as i32,
-                    TextureFilter::Linear => ffi::LINEAR as i32,
-                },
-            );
-        }
+        self.min_filter = filter;
         Ok(())
     }
     fn upscale_filter(&mut self, filter: TextureFilter) -> Result<(), Self::Error> {
-        self.make_current()?;
-        unsafe {
-            self.gl.TexParameteri(
-                ffi::TEXTURE_2D,
-                ffi::TEXTURE_MAG_FILTER,
-                match filter {
-                    TextureFilter::Nearest => ffi::NEAREST as i32,
-                    TextureFilter::Linear => ffi::LINEAR as i32,
-                },
-            );
-        }
+        self.max_filter = filter;
         Ok(())
     }
 
@@ -1116,8 +1117,11 @@ impl Renderer for Gles2Renderer {
             solid_program: self.solid_program.clone(),
             // output transformation passed in by the user
             current_projection: flip180 * transform.matrix() * renderer,
+            transform,
             vbos: self.vbos,
             size,
+            min_filter: self.min_filter,
+            max_filter: self.max_filter,
         };
 
         let result = rendering(self, &mut frame);
@@ -1305,6 +1309,10 @@ impl Frame for Gles2Frame {
 
         self.render_texture(texture, mat, Some(&damage), tex_verts, alpha)
     }
+
+    fn transformation(&self) -> Transform {
+        self.transform
+    }
 }
 
 impl Gles2Frame {
@@ -1331,8 +1339,22 @@ impl Gles2Frame {
         unsafe {
             self.gl.ActiveTexture(ffi::TEXTURE0);
             self.gl.BindTexture(target, tex.0.texture);
-            self.gl
-                .TexParameteri(target, ffi::TEXTURE_MIN_FILTER, ffi::LINEAR as i32);
+            self.gl.TexParameteri(
+                ffi::TEXTURE_2D,
+                ffi::TEXTURE_MIN_FILTER,
+                match self.min_filter {
+                    TextureFilter::Nearest => ffi::NEAREST as i32,
+                    TextureFilter::Linear => ffi::LINEAR as i32,
+                },
+            );
+            self.gl.TexParameteri(
+                ffi::TEXTURE_2D,
+                ffi::TEXTURE_MAG_FILTER,
+                match self.max_filter {
+                    TextureFilter::Nearest => ffi::NEAREST as i32,
+                    TextureFilter::Linear => ffi::LINEAR as i32,
+                },
+            );
             self.gl.UseProgram(self.tex_programs[tex.0.texture_kind].program);
 
             self.gl
@@ -1415,4 +1437,9 @@ impl Gles2Frame {
 
         Ok(())
     }
+
+    /// Projection matrix for this frame
+    pub fn projection(&self) -> &[f32; 9] {
+        self.current_projection.as_ref()
+    }
 }

src/backend/renderer/mod.rs

@@ -108,6 +108,36 @@ impl Transform {
             size
         }
     }
+
+    /// Transforms a rectangle inside an area of a given size by applying this transformation
+    pub fn transform_rect_in<N: Coordinate, Kind>(
+        &self,
+        rect: Rectangle<N, Kind>,
+        area: &Size<N, Kind>,
+    ) -> Rectangle<N, Kind> {
+        let size = self.transform_size(rect.size);
+
+        let loc = match *self {
+            Transform::Normal => rect.loc,
+            Transform::_90 => (area.h - rect.loc.y - rect.size.h, rect.loc.x).into(),
+            Transform::_180 => (
+                area.w - rect.loc.x - rect.size.w,
+                area.h - rect.loc.y - rect.size.h,
+            )
+                .into(),
+            Transform::_270 => (rect.loc.y, area.w - rect.loc.x - rect.size.w).into(),
+            Transform::Flipped => (area.w - rect.loc.x - rect.size.w, rect.loc.y).into(),
+            Transform::Flipped90 => (rect.loc.y, rect.loc.x).into(),
+            Transform::Flipped180 => (rect.loc.x, area.h - rect.loc.y - rect.size.h).into(),
+            Transform::Flipped270 => (
+                area.h - rect.loc.y - rect.size.h,
+                area.w - rect.loc.x - rect.size.w,
+            )
+                .into(),
+        };
+
+        Rectangle::from_loc_and_size(loc, size)
+    }
 }
 
 #[cfg(feature = "wayland_frontend")]
@@ -219,6 +249,9 @@ pub trait Frame {
         src_transform: Transform,
         alpha: f32,
     ) -> Result<(), Self::Error>;
+
+    /// Output transformation that is applied to this frame
+    fn transformation(&self) -> Transform;
 }
 
 /// Abstraction of commonly used rendering operations for compositors.
@@ -527,3 +560,102 @@ pub fn buffer_dimensions(buffer: &wl_buffer::WlBuffer) -> Option<Size<i32, Physi
 
     crate::wayland::shm::with_buffer_contents(buffer, |_, data| (data.width, data.height).into()).ok()
 }
+
+#[cfg(test)]
+mod tests {
+    use super::Transform;
+    use crate::utils::{Logical, Rectangle, Size};
+
+    #[test]
+    fn transform_rect_ident() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::Normal;
+
+        assert_eq!(rect, transform.transform_rect_in(rect, &size))
+    }
+
+    #[test]
+    fn transform_rect_90() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::_90;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((30, 10), (40, 30)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+
+    #[test]
+    fn transform_rect_180() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::_180;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((30, 30), (30, 40)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+
+    #[test]
+    fn transform_rect_270() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::_270;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((20, 30), (40, 30)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+
+    #[test]
+    fn transform_rect_f() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::Flipped;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((30, 20), (30, 40)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+
+    #[test]
+    fn transform_rect_f90() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 80));
+        let transform = Transform::Flipped90;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((20, 10), (40, 30)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+
+    #[test]
+    fn transform_rect_f180() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::Flipped180;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((10, 30), (30, 40)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+
+    #[test]
+    fn transform_rect_f270() {
+        let rect = Rectangle::<i32, Logical>::from_loc_and_size((10, 20), (30, 40));
+        let size = Size::from((70, 90));
+        let transform = Transform::Flipped270;
+
+        assert_eq!(
+            Rectangle::from_loc_and_size((30, 30), (40, 30)),
+            transform.transform_rect_in(rect, &size)
+        )
+    }
+}

wlcs_anvil/src/renderer.rs

@@ -112,6 +112,10 @@ impl Frame for DummyFrame {
     ) -> Result<(), Self::Error> {
         Ok(())
     }
+
+    fn transformation(&self) -> Transform {
+        Transform::Normal
+    }
 }
 
 pub struct DummyTexture {