1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #include "ImageLayerMLGPU.h"
8 #include "LayerManagerMLGPU.h"
9
10 namespace mozilla {
11
12 using namespace gfx;
13
14 namespace layers {
15
ImageLayerMLGPU(LayerManagerMLGPU * aManager)16 ImageLayerMLGPU::ImageLayerMLGPU(LayerManagerMLGPU* aManager)
17 : ImageLayer(aManager, static_cast<HostLayer*>(this)),
18 TexturedLayerMLGPU(aManager) {}
19
~ImageLayerMLGPU()20 ImageLayerMLGPU::~ImageLayerMLGPU() { CleanupResources(); }
21
ComputeEffectiveTransforms(const gfx::Matrix4x4 & aTransformToSurface)22 void ImageLayerMLGPU::ComputeEffectiveTransforms(
23 const gfx::Matrix4x4& aTransformToSurface) {
24 Matrix4x4 local = GetLocalTransform();
25
26 // Snap image edges to pixel boundaries.
27 gfxRect sourceRect(0, 0, 0, 0);
28 if (mHost && mHost->IsAttached()) {
29 IntSize size = mHost->GetImageSize();
30 sourceRect.SizeTo(size.width, size.height);
31 }
32
33 // Snap our local transform first, and snap the inherited transform as well.
34 // This makes our snapping equivalent to what would happen if our content
35 // was drawn into a PaintedLayer (gfxContext would snap using the local
36 // transform, then we'd snap again when compositing the PaintedLayer).
37 mEffectiveTransform = SnapTransform(local, sourceRect, nullptr) *
38 SnapTransformTranslation(aTransformToSurface, nullptr);
39 mEffectiveTransformForBuffer = mEffectiveTransform;
40
41 if (mScaleMode == ScaleMode::STRETCH && mScaleToSize.width != 0.0 &&
42 mScaleToSize.height != 0.0) {
43 Size scale(sourceRect.Width() / mScaleToSize.width,
44 sourceRect.Height() / mScaleToSize.height);
45 mScale = Some(scale);
46 }
47
48 ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
49 }
50
GetSamplingFilter()51 gfx::SamplingFilter ImageLayerMLGPU::GetSamplingFilter() {
52 return ImageLayer::GetSamplingFilter();
53 }
54
IsContentOpaque()55 bool ImageLayerMLGPU::IsContentOpaque() {
56 if (mPictureRect.Width() == 0 || mPictureRect.Height() == 0) {
57 return false;
58 }
59 if (mScaleMode == ScaleMode::STRETCH) {
60 return gfx::IsOpaque(mHost->CurrentTextureHost()->GetFormat());
61 }
62 return false;
63 }
64
SetRenderRegion(LayerIntRegion && aRegion)65 void ImageLayerMLGPU::SetRenderRegion(LayerIntRegion&& aRegion) {
66 switch (mScaleMode) {
67 case ScaleMode::STRETCH:
68 // See bug 1264142.
69 aRegion.AndWith(
70 LayerIntRect(0, 0, mScaleToSize.width, mScaleToSize.height));
71 break;
72 default:
73 // Clamp the visible region to the texture size. (see bug 1396507)
74 MOZ_ASSERT(mScaleMode == ScaleMode::SCALE_NONE);
75 aRegion.AndWith(
76 LayerIntRect(0, 0, mPictureRect.Width(), mPictureRect.Height()));
77 break;
78 }
79 LayerMLGPU::SetRenderRegion(Move(aRegion));
80 }
81
CleanupResources()82 void ImageLayerMLGPU::CleanupResources() {
83 if (mHost) {
84 mHost->CleanupResources();
85 mHost->Detach(this);
86 }
87 mTexture = nullptr;
88 mBigImageTexture = nullptr;
89 mHost = nullptr;
90 }
91
PrintInfo(std::stringstream & aStream,const char * aPrefix)92 void ImageLayerMLGPU::PrintInfo(std::stringstream& aStream,
93 const char* aPrefix) {
94 ImageLayer::PrintInfo(aStream, aPrefix);
95 if (mHost && mHost->IsAttached()) {
96 aStream << "\n";
97 nsAutoCString pfx(aPrefix);
98 pfx += " ";
99 mHost->PrintInfo(aStream, pfx.get());
100 }
101 }
102
Disconnect()103 void ImageLayerMLGPU::Disconnect() { CleanupResources(); }
104
ClearCachedResources()105 void ImageLayerMLGPU::ClearCachedResources() { CleanupResources(); }
106
107 } // namespace layers
108 } // namespace mozilla
109