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gfx: Add display list optimization to eliminate clipped items before

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submitting them to Skia.

40x improvement in painting time on Wikipedia.
This commit is contained in:
Patrick Walton 2014-06-05 10:50:04 -07:00
parent b2e7e67087
commit 081e054b4a
5 changed files with 116 additions and 11 deletions
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26
src/components/gfx/render_task.rs
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@ -5,6 +5,7 @@
//! The task that handles all rendering/painting.
use buffer_map::BufferMap;
use display_list::optimizer::DisplayListOptimizer;
use display_list::DisplayList;
use font_context::{FontContext, FontContextInfo};
use render_context::RenderContext;
@ -17,19 +18,18 @@ use geom::size::Size2D;
use layers::platform::surface::{NativePaintingGraphicsContext, NativeSurface};
use layers::platform::surface::{NativeSurfaceMethods};
use layers;
use servo_msg::compositor_msg::{Epoch, IdleRenderState, LayerBuffer};
use servo_msg::compositor_msg::{LayerBufferSet, LayerId, LayerMetadata, RenderListener};
use servo_msg::compositor_msg::{RenderingRenderState, ScrollPolicy};
use servo_msg::constellation_msg::{ConstellationChan, PipelineId, RendererReadyMsg};
use servo_msg::constellation_msg::{Failure, FailureMsg};
use servo_msg::compositor_msg::{Epoch, IdleRenderState, LayerBuffer, LayerBufferSet, LayerId};
use servo_msg::compositor_msg::{LayerMetadata, RenderListener, RenderingRenderState, ScrollPolicy};
use servo_msg::constellation_msg::{ConstellationChan, Failure, FailureMsg, PipelineId};
use servo_msg::constellation_msg::{RendererReadyMsg};
use servo_msg::platform::surface::NativeSurfaceAzureMethods;
use servo_util::geometry;
use servo_util::opts::Opts;
use servo_util::smallvec::{SmallVec, SmallVec1};
use servo_util::task::send_on_failure;
use servo_util::time::{ProfilerChan, profile};
use servo_util::time;
use servo_util::task::send_on_failure;
use std::comm::{channel, Receiver, Sender};
use std::comm::{Receiver, Sender, channel};
use std::task::TaskBuilder;
use sync::Arc;
@ -154,7 +154,7 @@ fn initialize_layers<C:RenderListener>(
compositor.initialize_layers_for_pipeline(pipeline_id, metadata, epoch);
}
impl<C: RenderListener + Send> RenderTask<C> {
impl<C:RenderListener + Send> RenderTask<C> {
pub fn create(id: PipelineId,
port: Receiver<Msg>,
compositor: C,
@ -294,6 +294,12 @@ impl<C: RenderListener + Send> RenderTask<C> {
// Divide up the layer into tiles.
for tile in tiles.iter() {
// Optimize the display list for this tile.
let page_rect_au = geometry::f32_rect_to_au_rect(tile.page_rect);
let optimizer = DisplayListOptimizer::new(render_layer.display_list.clone(),
page_rect_au);
let display_list = optimizer.optimize();
let width = tile.screen_rect.size.width;
let height = tile.screen_rect.size.height;
@ -340,7 +346,7 @@ impl<C: RenderListener + Send> RenderTask<C> {
// Draw the display list.
profile(time::RenderingDrawingCategory, self.profiler_chan.clone(), || {
render_layer.display_list.draw_into_context(&mut ctx);
display_list.draw_into_context(&mut ctx);
ctx.draw_target.flush();
});
}