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| 1 // Copyright 2017 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 "platform/graphics/gpu/ImageLayerBridge.h" |
| 6 |
| 7 #include "cc/resources/shared_bitmap.h" |
| 8 #include "cc/resources/texture_mailbox.h" |
| 9 #include "gpu/command_buffer/client/gles2_interface.h" |
| 10 #include "platform/graphics/ColorBehavior.h" |
| 11 #include "platform/graphics/GraphicsLayer.h" |
| 12 #include "platform/graphics/gpu/SharedGpuContext.h" |
| 13 #include "public/platform/Platform.h" |
| 14 #include "public/platform/WebCompositorSupport.h" |
| 15 #include "public/platform/WebExternalTextureLayer.h" |
| 16 #include "public/platform/WebGraphicsContext3DProvider.h" |
| 17 |
| 18 namespace blink { |
| 19 |
| 20 ImageLayerBridge::ImageLayerBridge(OpacityMode opacityMode) |
| 21 : m_weakPtrFactory(this), m_opacityMode(opacityMode) { |
| 22 m_layer = |
| 23 Platform::current()->compositorSupport()->createExternalTextureLayer( |
| 24 this); |
| 25 GraphicsLayer::registerContentsLayer(m_layer->layer()); |
| 26 m_layer->setNearestNeighbor(m_filterQuality == kNone_SkFilterQuality); |
| 27 if (m_opacityMode == Opaque) { |
| 28 m_layer->setOpaque(true); |
| 29 m_layer->setBlendBackgroundColor(false); |
| 30 } |
| 31 } |
| 32 |
| 33 ImageLayerBridge::~ImageLayerBridge() { |
| 34 if (!m_disposed) |
| 35 dispose(); |
| 36 } |
| 37 |
| 38 void ImageLayerBridge::setImage(PassRefPtr<StaticBitmapImage> image) { |
| 39 m_image = std::move(image); |
| 40 if (m_image) { |
| 41 if (m_opacityMode == NonOpaque) { |
| 42 m_layer->setOpaque(m_image->currentFrameKnownToBeOpaque()); |
| 43 m_layer->setBlendBackgroundColor(!m_image->currentFrameKnownToBeOpaque()); |
| 44 } |
| 45 } |
| 46 if (!m_hasPresentedSinceLastSetImage && m_image && |
| 47 m_image->isTextureBacked()) { |
| 48 // If the layer bridge is not presenting, the GrContext may not be getting |
| 49 // flushed regularly. The flush is normally triggered inside the |
| 50 // m_image->ensureMailbox() call of |
| 51 // ImageLayerBridge::PrepareTextureMailbox. To prevent a potential memory |
| 52 // leak we must flush the GrContext here. |
| 53 m_image->imageForCurrentFrame()->getTextureHandle( |
| 54 true); // GrContext flush. |
| 55 } |
| 56 m_hasPresentedSinceLastSetImage = false; |
| 57 } |
| 58 |
| 59 void ImageLayerBridge::dispose() { |
| 60 if (m_layer) { |
| 61 GraphicsLayer::unregisterContentsLayer(m_layer->layer()); |
| 62 m_layer->clearTexture(); |
| 63 m_layer.reset(); |
| 64 } |
| 65 m_image = nullptr; |
| 66 m_disposed = true; |
| 67 } |
| 68 |
| 69 bool ImageLayerBridge::PrepareTextureMailbox( |
| 70 cc::TextureMailbox* outMailbox, |
| 71 std::unique_ptr<cc::SingleReleaseCallback>* outReleaseCallback) { |
| 72 if (m_disposed) |
| 73 return false; |
| 74 |
| 75 if (!m_image) |
| 76 return false; |
| 77 |
| 78 if (m_hasPresentedSinceLastSetImage) |
| 79 return false; |
| 80 |
| 81 m_hasPresentedSinceLastSetImage = true; |
| 82 |
| 83 if (m_image->isTextureBacked()) { |
| 84 m_image->ensureMailbox(); |
| 85 *outMailbox = cc::TextureMailbox(m_image->mailbox(), m_image->syncToken(), |
| 86 GL_TEXTURE_2D); |
| 87 auto func = WTF::bind(&ImageLayerBridge::mailboxReleasedGpu, |
| 88 m_weakPtrFactory.createWeakPtr(), m_image); |
| 89 *outReleaseCallback = cc::SingleReleaseCallback::Create( |
| 90 convertToBaseCallback(std::move(func))); |
| 91 } else { |
| 92 std::unique_ptr<cc::SharedBitmap> bitmap = createOrRecycleBitmap(); |
| 93 if (!bitmap) |
| 94 return false; |
| 95 |
| 96 sk_sp<SkImage> skImage = m_image->imageForCurrentFrame(); |
| 97 if (!skImage) |
| 98 return false; |
| 99 |
| 100 SkImageInfo dstInfo = SkImageInfo::MakeN32Premul(m_image->width(), 1); |
| 101 size_t rowBytes = m_image->width() * 4; |
| 102 |
| 103 // loop to flip Y |
| 104 for (int row = 0; row < m_image->height(); row++) { |
| 105 if (!skImage->readPixels( |
| 106 dstInfo, |
| 107 bitmap->pixels() + rowBytes * (m_image->height() - 1 - row), |
| 108 rowBytes, 0, row)) |
| 109 return false; |
| 110 } |
| 111 |
| 112 *outMailbox = cc::TextureMailbox( |
| 113 bitmap.get(), gfx::Size(m_image->width(), m_image->height())); |
| 114 auto func = WTF::bind(&ImageLayerBridge::mailboxReleasedSoftware, |
| 115 m_weakPtrFactory.createWeakPtr(), |
| 116 base::Passed(&bitmap), m_image->size()); |
| 117 *outReleaseCallback = cc::SingleReleaseCallback::Create( |
| 118 convertToBaseCallback(std::move(func))); |
| 119 } |
| 120 |
| 121 outMailbox->set_nearest_neighbor(m_filterQuality == kNone_SkFilterQuality); |
| 122 // TODO(junov): Figure out how to get the color space info. |
| 123 // outMailbox->set_color_space(); |
| 124 |
| 125 return true; |
| 126 } |
| 127 |
| 128 std::unique_ptr<cc::SharedBitmap> ImageLayerBridge::createOrRecycleBitmap() { |
| 129 auto it = std::remove_if(m_recycledBitmaps.begin(), m_recycledBitmaps.end(), |
| 130 [this](const RecycledBitmap& bitmap) { |
| 131 return bitmap.size != m_image->size(); |
| 132 }); |
| 133 m_recycledBitmaps.shrink(it - m_recycledBitmaps.begin()); |
| 134 |
| 135 if (!m_recycledBitmaps.isEmpty()) { |
| 136 RecycledBitmap recycled = std::move(m_recycledBitmaps.back()); |
| 137 m_recycledBitmaps.pop_back(); |
| 138 DCHECK(recycled.size == m_image->size()); |
| 139 return std::move(recycled.bitmap); |
| 140 } |
| 141 return Platform::current()->allocateSharedBitmap(m_image->size()); |
| 142 } |
| 143 |
| 144 void ImageLayerBridge::mailboxReleasedGpu(RefPtr<StaticBitmapImage> image, |
| 145 const gpu::SyncToken& token, |
| 146 bool lostResource) { |
| 147 if (image) { |
| 148 DCHECK(image->isTextureBacked()); |
| 149 if (token.HasData()) { |
| 150 if (image->hasMailbox()) { |
| 151 image->updateSyncToken(token); |
| 152 } else { |
| 153 // Wait on sync token now because SkiaTextureHolder does not know |
| 154 // about sync tokens. |
| 155 gpu::gles2::GLES2Interface* sharedGL = SharedGpuContext::gl(); |
| 156 if (sharedGL) |
| 157 sharedGL->WaitSyncTokenCHROMIUM(token.GetConstData()); |
| 158 } |
| 159 } |
| 160 } |
| 161 // let 'image' go out of scope to finalize the release. The |
| 162 // destructor will wait on sync token before deleting resource. |
| 163 } |
| 164 |
| 165 void ImageLayerBridge::mailboxReleasedSoftware( |
| 166 std::unique_ptr<cc::SharedBitmap> bitmap, |
| 167 const IntSize& size, |
| 168 const gpu::SyncToken& syncToken, |
| 169 bool lostResource) { |
| 170 DCHECK(!syncToken.HasData()); // No sync tokens for software resources. |
| 171 if (!m_disposed && !lostResource) { |
| 172 RecycledBitmap recycled = {std::move(bitmap), size}; |
| 173 m_recycledBitmaps.push_back(std::move(recycled)); |
| 174 } |
| 175 } |
| 176 |
| 177 WebLayer* ImageLayerBridge::platformLayer() const { |
| 178 return m_layer->layer(); |
| 179 } |
| 180 |
| 181 } // namespace blink |
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