Changes reflecting the latest version of rust-layers

The Tile trait has been removed and TileGrid now keeps Tile structs with
Textures embedded instead of simply buffers. rust-layers now creates
its own textures instead of relying on Servo to do it.

src/components/compositing/compositor_data.rs

@@ -7,14 +7,12 @@ use events;
 use pipeline::CompositionPipeline;
 
 use azure::azure_hl::Color;
-use geom::matrix::identity;
 use geom::point::TypedPoint2D;
 use geom::rect::Rect;
 use geom::size::{Size2D, TypedSize2D};
 use gfx::render_task::{ReRenderRequest, ReRenderMsg, RenderChan, UnusedBufferMsg};
-use layers::layers::{Layer, Flip, LayerBuffer, LayerBufferSet, NoFlip, TextureLayer, Tile};
+use layers::layers::{Layer, LayerBufferSet};
 use layers::platform::surface::{NativeCompositingGraphicsContext, NativeSurfaceMethods};
-use layers::texturegl::{Texture, TextureTarget};
 use servo_msg::compositor_msg::{Epoch, FixedPosition, LayerId};
 use servo_msg::compositor_msg::ScrollPolicy;
 use servo_msg::constellation_msg::PipelineId;
@@ -22,14 +20,6 @@ use servo_util::geometry::PagePx;
 use std::collections::hashmap::HashMap;
 use std::rc::Rc;
 
-#[cfg(target_os="macos")]
-#[cfg(target_os="android")]
-use layers::layers::VerticalFlip;
-#[cfg(not(target_os="macos"))]
-use layers::texturegl::TextureTarget2D;
-#[cfg(target_os="macos")]
-use layers::texturegl::TextureTargetRectangle;
-
 pub struct CompositorData {
     /// This layer's pipeline. BufferRequests and mouse events will be sent through this.
     pub pipeline: CompositionPipeline,
@@ -149,7 +139,7 @@ impl CompositorData {
         }
 
         if redisplay {
-            CompositorData::build_layer_tree(layer.clone(), graphics_context);
+            layer.create_textures(graphics_context);
         }
 
         let get_child_buffer_request = |kid: &Rc<Layer<CompositorData>>| -> bool {
@@ -223,34 +213,6 @@ impl CompositorData {
                                             size);
     }
 
-    // Returns whether the layer should be vertically flipped.
-    #[cfg(target_os="macos")]
-    fn texture_flip_and_target(cpu_painting: bool, size: Size2D<uint>) -> (Flip, TextureTarget) {
-        let flip = if cpu_painting {
-            NoFlip
-        } else {
-            VerticalFlip
-        };
-
-        (flip, TextureTargetRectangle(size))
-    }
-
-    #[cfg(target_os="android")]
-    fn texture_flip_and_target(cpu_painting: bool, size: Size2D<uint>) -> (Flip, TextureTarget) {
-        let flip = if cpu_painting {
-            NoFlip
-        } else {
-            VerticalFlip
-        };
-
-        (flip, TextureTarget2D)
-    }
-
-    #[cfg(target_os="linux")]
-    fn texture_flip_and_target(_: bool, _: Size2D<uint>) -> (Flip, TextureTarget) {
-        (NoFlip, TextureTarget2D)
-    }
-
     fn find_child_with_pipeline_and_layer_id(layer: Rc<Layer<CompositorData>>,
                                              pipeline_id: PipelineId,
                                              layer_id: LayerId)
@@ -285,46 +247,6 @@ impl CompositorData {
         return None;
     }
 
-    // Collect buffers from the layer. This method IS NOT recursive, so child layers
-    // are not rebuilt directly from this method.
-    pub fn build_layer_tree(layer: Rc<Layer<CompositorData>>,
-                            graphics_context: &NativeCompositingGraphicsContext) {
-        // Clear all old textures.
-        layer.tiles.borrow_mut().clear();
-
-        // Add new tiles.
-        layer.do_for_all_tiles(|buffer: &Box<LayerBuffer>| {
-            debug!("osmain: compositing buffer rect {}", buffer.rect);
-
-            let size = Size2D(buffer.screen_pos.size.width as int,
-                              buffer.screen_pos.size.height as int);
-
-            debug!("osmain: adding new texture layer");
-
-            // Determine, in a platform-specific way, whether we should flip the texture
-            // and which target to use.
-            let (flip, target) =
-                    CompositorData::texture_flip_and_target(layer.extra_data.borrow().cpu_painting,
-                                                            buffer.screen_pos.size);
-
-            // Make a new texture and bind the layer buffer's surface to it.
-            let texture = Texture::new(target);
-            debug!("COMPOSITOR binding to native surface {:d}",
-                   buffer.native_surface.get_id() as int);
-            buffer.native_surface.bind_to_texture(graphics_context, &texture, size);
-
-            // Set the layer's transform.
-            let rect = buffer.rect;
-            let transform = identity().translate(rect.origin.x, rect.origin.y, 0.0);
-            let transform = transform.scale(rect.size.width, rect.size.height, 1.0);
-
-            // Make a texture layer and add it.
-            let texture_layer = Rc::new(TextureLayer::new(texture, buffer.screen_pos.size,
-                                                          flip, transform));
-            layer.tiles.borrow_mut().push(texture_layer);
-        });
-    }
-
     // Add LayerBuffers to the specified layer. Returns the layer buffer set back if the layer that
     // matches the given pipeline ID was not found; otherwise returns None and consumes the layer
     // buffer set.
@@ -348,12 +270,12 @@ impl CompositorData {
 
         {
             for buffer in new_buffers.buffers.move_iter().rev() {
-                layer.add_tile_pixel(buffer);
+                layer.add_buffer(buffer);
             }
 
-            let unused_tiles = layer.collect_unused_tiles();
-            if !unused_tiles.is_empty() { // send back unused buffers
-                let msg = UnusedBufferMsg(unused_tiles);
+            let unused_buffers = layer.collect_unused_buffers();
+            if !unused_buffers.is_empty() { // send back unused buffers
+                let msg = UnusedBufferMsg(unused_buffers);
                 let _ = layer.extra_data.borrow().pipeline.render_chan.send_opt(msg);
             }
 
@@ -370,24 +292,24 @@ impl CompositorData {
             }
         }
 
-        CompositorData::build_layer_tree(layer.clone(), graphics_context);
+        layer.create_textures(graphics_context);
         return true;
     }
 
     /// Destroys all layer tiles, sending the buffers back to the renderer to be destroyed or
     /// reused.
     fn clear(layer: Rc<Layer<CompositorData>>) {
-        let mut tiles = layer.collect_tiles();
+        let mut buffers = layer.collect_buffers();
 
-        if !tiles.is_empty() {
+        if !buffers.is_empty() {
             // We have no way of knowing without a race whether the render task is even up and
-            // running, but mark the tiles as not leaking. If the render task died, then the
-            // tiles are going to be cleaned up.
-            for tile in tiles.mut_iter() {
-                tile.mark_wont_leak()
+            // running, but mark the buffers as not leaking. If the render task died, then the
+            // buffers are going to be cleaned up.
+            for buffer in buffers.mut_iter() {
+                buffer.mark_wont_leak()
             }
 
-            let _ = layer.extra_data.borrow().pipeline.render_chan.send_opt(UnusedBufferMsg(tiles));
+            let _ = layer.extra_data.borrow().pipeline.render_chan.send_opt(UnusedBufferMsg(buffers));
         }
     }
 
@@ -406,7 +328,7 @@ impl CompositorData {
     ///
     /// This is used during shutdown, when we know the render task is going away.
     pub fn forget_all_tiles(layer: Rc<Layer<CompositorData>>) {
-        let tiles = layer.collect_tiles();
+        let tiles = layer.collect_buffers();
         for tile in tiles.move_iter() {
             let mut tile = tile;
             tile.mark_wont_leak()

src/components/gfx/buffer_map.rs

@@ -5,7 +5,7 @@
 use std::collections::hashmap::HashMap;
 use geom::size::Size2D;
 use layers::platform::surface::NativePaintingGraphicsContext;
-use layers::layers::Tile;
+use layers::layers::LayerBuffer;
 use std::hash::Hash;
 use std::hash::sip::SipState;
 use std::mem;
@@ -13,9 +13,9 @@ use std::mem;
 /// This is a struct used to store buffers when they are not in use.
 /// The render task can quickly query for a particular size of buffer when it
 /// needs it.
-pub struct BufferMap<T> {
+pub struct BufferMap {
     /// A HashMap that stores the Buffers.
-    map: HashMap<BufferKey, BufferValue<T>>,
+    map: HashMap<BufferKey, BufferValue>,
     /// The current amount of memory stored by the BufferMap's buffers.
     mem: uint,
     /// The maximum allowed memory. Unused buffers will be deleted
@@ -52,16 +52,16 @@ impl BufferKey {
 }
 
 /// A helper struct to keep track of buffers in the HashMap
-struct BufferValue<T> {
+struct BufferValue {
     /// An array of buffers, all the same size
-    buffers: Vec<T>,
+    buffers: Vec<Box<LayerBuffer>>,
     /// The counter when this size was last requested
     last_action: uint,
 }
 
-impl<T: Tile> BufferMap<T> {
+impl BufferMap {
     // Creates a new BufferMap with a given buffer limit.
-    pub fn new(max_mem: uint) -> BufferMap<T> {
+    pub fn new(max_mem: uint) -> BufferMap {
         BufferMap {
             map: HashMap::new(),
             mem: 0u,
@@ -71,7 +71,7 @@ impl<T: Tile> BufferMap<T> {
     }
 
     /// Insert a new buffer into the map.
-    pub fn insert(&mut self, graphics_context: &NativePaintingGraphicsContext, new_buffer: T) {
+    pub fn insert(&mut self, graphics_context: &NativePaintingGraphicsContext, new_buffer: Box<LayerBuffer>) {
         let new_key = BufferKey::get(new_buffer.get_size_2d());
 
         // If all our buffers are the same size and we're already at our
@@ -118,7 +118,7 @@ impl<T: Tile> BufferMap<T> {
     }
 
     // Try to find a buffer for the given size.
-    pub fn find(&mut self, size: Size2D<uint>) -> Option<T> {
+    pub fn find(&mut self, size: Size2D<uint>) -> Option<Box<LayerBuffer>> {
         let mut flag = false; // True if key needs to be popped after retrieval.
         let key = BufferKey::get(size);
         let ret = match self.map.find_mut(&key) {

src/components/gfx/render_task.rs

@@ -120,7 +120,7 @@ pub struct RenderTask<C> {
     epoch: Epoch,
 
     /// A data structure to store unused LayerBuffers
-    buffer_map: BufferMap<Box<LayerBuffer>>,
+    buffer_map: BufferMap,
 }
 
 // If we implement this as a function, we get borrowck errors from borrowing
@@ -380,6 +380,7 @@ impl<C:RenderListener + Send> RenderTask<C> {
                                 buffer.screen_pos = tile.screen_rect;
                                 buffer.resolution = scale;
                                 buffer.native_surface.mark_wont_leak();
+                                buffer.painted_with_cpu = true;
                                 buffer
                             }
                             None => {
@@ -397,7 +398,8 @@ impl<C:RenderListener + Send> RenderTask<C> {
                                     rect: tile.page_rect,
                                     screen_pos: tile.screen_rect,
                                     resolution: scale,
-                                    stride: (width * 4) as uint
+                                    stride: (width * 4) as uint,
+                                    painted_with_cpu: true,
                                 }
                             }
                         };
@@ -427,7 +429,8 @@ impl<C:RenderListener + Send> RenderTask<C> {
                             rect: tile.page_rect,
                             screen_pos: tile.screen_rect,
                             resolution: scale,
-                            stride: (width * 4) as uint
+                            stride: (width * 4) as uint,
+                            painted_with_cpu: false,
                         }
                     }
                 };

src/support/layers/rust-layers

@@ -1 +1 @@
-Subproject commit fc8332bdd278531e3c498813b366b147c96a8b37
+Subproject commit eebf3aca21a022773053993c0be332c7641f5240