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Side by Side Diff: sky/compositor/layer_host.cc

Issue 740923002: Add a simple compositor for Sky (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Address reviewer comments Created 6 years, 1 month ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "sky/compositor/layer_host.h"
6
7 #include "mojo/converters/geometry/geometry_type_converters.h"
8 #include "mojo/gpu/gl_context.h"
9 #include "mojo/services/public/cpp/surfaces/surfaces_utils.h"
10 #include "mojo/skia/ganesh_context.h"
11 #include "sky/compositor/layer.h"
12
13 namespace sky {
14
15 LayerHost::LayerHost(LayerHostClient* client)
16 : client_(client),
17 surface_holder_(this, client->GetShell()),
18 gl_context_(mojo::GLContext::Create(client->GetShell())),
19 ganesh_context_(gl_context_),
20 resource_manager_(gl_context_) {
21 }
22
23 LayerHost::~LayerHost() {
24 }
25
26 void LayerHost::SetNeedsAnimate() {
27 }
28
29 void LayerHost::SetRootLayer(scoped_refptr<Layer> layer) {
30 DCHECK(!root_layer_.get());
31 root_layer_ = layer;
32 root_layer_->set_host(this);
33 }
34
35 void LayerHost::OnReadyForNextFrame() {
36 client_->BeginFrame();
37 root_layer_->Display();
38 Upload(root_layer_.get());
39 }
40
41 void LayerHost::OnSurfaceIdAvailable(mojo::SurfaceIdPtr surface_id) {
42 client_->OnSurfaceIdAvailable(surface_id.Pass());
43 }
44
45 void LayerHost::ReturnResources(
46 mojo::Array<mojo::ReturnedResourcePtr> resources) {
47 resource_manager_.ReturnResources(resources.Pass());
48 }
49
50 void LayerHost::Upload(Layer* layer) {
51 gfx::Size size = layer->size();
52 surface_holder_.SetSize(size);
53
54 mojo::FramePtr frame = mojo::Frame::New();
55 frame->resources.resize(0u);
56
57 mojo::Rect bounds;
58 bounds.width = size.width();
59 bounds.height = size.height();
60 mojo::PassPtr pass = mojo::CreateDefaultPass(1, bounds);
61 pass->quads.resize(0u);
62 pass->shared_quad_states.push_back(mojo::CreateDefaultSQS(
63 mojo::TypeConverter<mojo::Size, gfx::Size>::Convert(size)));
64
65 mojo::TransferableResourcePtr resource =
66 resource_manager_.CreateTransferableResource(layer);
67
68 mojo::QuadPtr quad = mojo::Quad::New();
69 quad->material = mojo::MATERIAL_TEXTURE_CONTENT;
70
71 mojo::RectPtr rect = mojo::Rect::New();
72 rect->width = size.width();
73 rect->height = size.height();
74 quad->rect = rect.Clone();
75 quad->opaque_rect = rect.Clone();
76 quad->visible_rect = rect.Clone();
77 quad->needs_blending = true;
78 quad->shared_quad_state_index = 0u;
79
80 mojo::TextureQuadStatePtr texture_state = mojo::TextureQuadState::New();
81 texture_state->resource_id = resource->id;
82 texture_state->premultiplied_alpha = true;
83 texture_state->uv_top_left = mojo::PointF::New();
84 texture_state->uv_bottom_right = mojo::PointF::New();
85 texture_state->uv_bottom_right->x = 1.f;
86 texture_state->uv_bottom_right->y = 1.f;
87 texture_state->background_color = mojo::Color::New();
88 texture_state->background_color->rgba = 0;
89 for (int i = 0; i < 4; ++i)
90 texture_state->vertex_opacity.push_back(1.f);
91 texture_state->flipped = false;
92
93 frame->resources.push_back(resource.Pass());
94 quad->texture_quad_state = texture_state.Pass();
95 pass->quads.push_back(quad.Pass());
96
97 frame->passes.push_back(pass.Pass());
98 surface_holder_.SubmitFrame(frame.Pass());
99 }
100
101 } // namespace sky
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