webrender/prim_store/
picture.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5use api::RasterSpace;
6use crate::scene_building::IsVisible;
7use crate::intern::{Internable, InternDebug, Handle as InternHandle};
8use crate::internal_types::LayoutPrimitiveInfo;
9use crate::picture_composite_mode::PictureCompositeKey;
10use crate::prim_store::{
11    PrimitiveKind, PrimitiveStore,
12    InternablePrimitive,
13};
14
15#[cfg_attr(feature = "capture", derive(Serialize))]
16#[cfg_attr(feature = "replay", derive(Deserialize))]
17#[derive(Debug, Clone, Eq, MallocSizeOf, PartialEq, Hash)]
18pub struct Picture {
19    pub composite_mode_key: PictureCompositeKey,
20    pub raster_space: RasterSpace,
21}
22
23#[cfg_attr(feature = "capture", derive(Serialize))]
24#[cfg_attr(feature = "replay", derive(Deserialize))]
25#[derive(Debug, Clone, Eq, MallocSizeOf, PartialEq, Hash)]
26pub struct PictureKey {
27    pub composite_mode_key: PictureCompositeKey,
28    pub raster_space: RasterSpace,
29}
30
31impl PictureKey {
32    pub fn new(
33        pic: Picture,
34    ) -> Self {
35        PictureKey {
36            composite_mode_key: pic.composite_mode_key,
37            raster_space: pic.raster_space,
38        }
39    }
40}
41
42impl InternDebug for PictureKey {}
43
44#[cfg_attr(feature = "capture", derive(Serialize))]
45#[cfg_attr(feature = "replay", derive(Deserialize))]
46#[derive(MallocSizeOf)]
47pub struct PictureTemplate;
48
49impl From<PictureKey> for PictureTemplate {
50    fn from(_: PictureKey) -> Self {
51        PictureTemplate
52    }
53}
54
55pub type PictureDataHandle = InternHandle<Picture>;
56
57impl Internable for Picture {
58    type Key = PictureKey;
59    type StoreData = PictureTemplate;
60    type InternData = ();
61    const PROFILE_COUNTER: usize = crate::profiler::INTERNED_PICTURES;
62}
63
64impl InternablePrimitive for Picture {
65    fn into_key(
66        self,
67        _: &LayoutPrimitiveInfo,
68    ) -> PictureKey {
69        PictureKey::new(self)
70    }
71
72    fn make_instance_kind(
73        _key: PictureKey,
74        _: PictureDataHandle,
75        _: &mut PrimitiveStore,
76    ) -> PrimitiveKind {
77        // Should never be hit as this method should not be
78        // called for pictures.
79        unreachable!();
80    }
81}
82
83impl IsVisible for Picture {
84    fn is_visible(&self) -> bool {
85        true
86    }
87}
88
89#[test]
90#[cfg(target_pointer_width = "64")]
91fn test_struct_sizes() {
92    use std::mem;
93    // The sizes of these structures are critical for performance on a number of
94    // talos stress tests. If you get a failure here on CI, there's two possibilities:
95    // (a) You made a structure smaller than it currently is. Great work! Update the
96    //     test expectations and move on.
97    // (b) You made a structure larger. This is not necessarily a problem, but should only
98    //     be done with care, and after checking if talos performance regresses badly.
99    assert_eq!(mem::size_of::<Picture>(), 96, "Picture size changed");
100    assert_eq!(mem::size_of::<PictureTemplate>(), 0, "PictureTemplate size changed");
101    assert_eq!(mem::size_of::<PictureKey>(), 96, "PictureKey size changed");
102}
webrender/prim_store/picture.rs

webrender/prim_store/
picture.rs
