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| 1 // Copyright 2016 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/MailboxTextureHolder.h" |
| 6 |
| 7 #include "gpu/command_buffer/client/gles2_interface.h" |
| 8 #include "platform/graphics/SkiaTextureHolder.h" |
| 9 #include "platform/graphics/gpu/DrawingBuffer.h" |
| 10 #include "platform/graphics/gpu/SharedGpuContext.h" |
| 11 #include "public/platform/Platform.h" |
| 12 #include "skia/ext/texture_handle.h" |
| 13 #include "third_party/skia/include/gpu/GrContext.h" |
| 14 |
| 15 namespace blink { |
| 16 |
| 17 MailboxTextureHolder::MailboxTextureHolder( |
| 18 const gpu::Mailbox& mailbox, |
| 19 const gpu::SyncToken& syncToken, |
| 20 unsigned textureIdToDeleteAfterMailboxConsumed, |
| 21 WeakPtr<DrawingBuffer> drawingBuffer, |
| 22 IntSize mailboxSize) |
| 23 : m_mailbox(mailbox), |
| 24 m_syncToken(syncToken), |
| 25 m_textureId(textureIdToDeleteAfterMailboxConsumed), |
| 26 m_drawingBuffer(drawingBuffer), |
| 27 m_size(mailboxSize), |
| 28 m_isConvertedFromSkiaTexture(false) {} |
| 29 |
| 30 MailboxTextureHolder::MailboxTextureHolder( |
| 31 std::unique_ptr<TextureHolder> textureHolder) { |
| 32 DCHECK(textureHolder->isSkiaTextureHolder()); |
| 33 sk_sp<SkImage> image = textureHolder->skImage(); |
| 34 DCHECK(image); |
| 35 |
| 36 gpu::gles2::GLES2Interface* sharedGL = SharedGpuContext::gl(); |
| 37 GrContext* sharedGrContext = SharedGpuContext::gr(); |
| 38 if (!sharedGrContext) { |
| 39 // Can happen if the context is lost. The SkImage won't be any good now |
| 40 // anyway. |
| 41 return; |
| 42 } |
| 43 GLuint imageTextureId = |
| 44 skia::GrBackendObjectToGrGLTextureInfo(image->getTextureHandle(true)) |
| 45 ->fID; |
| 46 sharedGL->BindTexture(GL_TEXTURE_2D, imageTextureId); |
| 47 |
| 48 sharedGL->GenMailboxCHROMIUM(m_mailbox.name); |
| 49 sharedGL->ProduceTextureCHROMIUM(GL_TEXTURE_2D, m_mailbox.name); |
| 50 const GLuint64 fenceSync = sharedGL->InsertFenceSyncCHROMIUM(); |
| 51 sharedGL->Flush(); |
| 52 sharedGL->GenSyncTokenCHROMIUM(fenceSync, m_syncToken.GetData()); |
| 53 |
| 54 sharedGL->BindTexture(GL_TEXTURE_2D, 0); |
| 55 // We changed bound textures in this function, so reset the GrContext. |
| 56 sharedGrContext->resetContext(kTextureBinding_GrGLBackendState); |
| 57 m_size = IntSize(image->width(), image->height()); |
| 58 m_textureId = imageTextureId; |
| 59 m_isConvertedFromSkiaTexture = true; |
| 60 } |
| 61 |
| 62 MailboxTextureHolder::~MailboxTextureHolder() { |
| 63 // Avoid leaking mailboxes in cases where the texture gets recycled by skia. |
| 64 if (SharedGpuContext::isValid()) { |
| 65 SharedGpuContext::gl()->ProduceTextureDirectCHROMIUM(0, GL_TEXTURE_2D, |
| 66 m_mailbox.name); |
| 67 } |
| 68 if (!m_isConvertedFromSkiaTexture) |
| 69 deleteTexture(); |
| 70 } |
| 71 |
| 72 unsigned MailboxTextureHolder::sharedContextId() { |
| 73 return SharedGpuContext::kNoSharedContext; |
| 74 } |
| 75 |
| 76 void MailboxTextureHolder::deleteTexture() { |
| 77 if (m_textureId && m_drawingBuffer) { |
| 78 m_drawingBuffer->contextGL()->WaitSyncTokenCHROMIUM(m_syncToken.GetData()); |
| 79 m_drawingBuffer->contextGL()->DeleteTextures(1, &m_textureId); |
| 80 m_textureId = 0u; // invalidate the texture. |
| 81 } |
| 82 } |
| 83 |
| 84 WebThread* MailboxTextureHolder::imageThread() { |
| 85 return Platform::current()->currentThread(); |
| 86 } |
| 87 |
| 88 } // namespace blink |
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