зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
2.1 KiB
C++
90 строки
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GLContext.h" // for GLContext, etc
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#include "SurfaceStream.h"
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#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
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#include "mozilla/layers/ISurfaceAllocator.h"
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#include "mozilla/layers/TextureClientOGL.h"
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#include "nsSize.h" // for nsIntSize
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using namespace mozilla::gl;
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namespace mozilla {
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namespace layers {
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class CompositableForwarder;
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SharedTextureClientOGL::SharedTextureClientOGL(TextureFlags aFlags)
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: TextureClient(aFlags)
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, mHandle(0)
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, mInverted(false)
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, mIsLocked(false)
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{
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// SharedTextureClient is always owned externally.
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mFlags |= TextureFlags::DEALLOCATE_CLIENT;
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}
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SharedTextureClientOGL::~SharedTextureClientOGL()
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{
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// the shared data is owned externally.
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}
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bool
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SharedTextureClientOGL::ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor)
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{
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MOZ_ASSERT(IsValid());
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if (!IsAllocated()) {
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return false;
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}
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aOutDescriptor = SharedTextureDescriptor(mShareType, mHandle, mSize, mInverted);
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return true;
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}
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void
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SharedTextureClientOGL::InitWith(gl::SharedTextureHandle aHandle,
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gfx::IntSize aSize,
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gl::SharedTextureShareType aShareType,
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bool aInverted)
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{
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MOZ_ASSERT(IsValid());
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MOZ_ASSERT(!IsAllocated());
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mHandle = aHandle;
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mSize = aSize;
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mShareType = aShareType;
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mInverted = aInverted;
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if (mInverted) {
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AddFlags(TextureFlags::NEEDS_Y_FLIP);
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}
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}
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bool
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SharedTextureClientOGL::Lock(OpenMode mode)
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{
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MOZ_ASSERT(!mIsLocked);
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if (!IsValid() || !IsAllocated()) {
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return false;
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}
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mIsLocked = true;
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return true;
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}
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void
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SharedTextureClientOGL::Unlock()
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{
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MOZ_ASSERT(mIsLocked);
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mIsLocked = false;
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}
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bool
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SharedTextureClientOGL::IsAllocated() const
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{
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return mHandle != 0;
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}
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} // namespace
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} // namespace
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