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27 lines
1017 B
Plaintext
27 lines
1017 B
Plaintext
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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module viz.mojom;
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import "ui/gfx/geometry/mojo/geometry.mojom";
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// The syscalls needed to update a layered window are blocked by the GPU
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// sandbox. This interface lets the GPU draw into shared memory and then send
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// an IPC to the browser to call UpdateLayeredWindow().
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interface LayeredWindowUpdater {
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// A new shared memory buffer has been allocated for |pixel_size|. The shared
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// memory buffer must be at least big enough to contain |pixel_size| in
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// RGBA_8888. The shared memory buffer will be used with subsequent calls to
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// Draw().
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OnAllocatedSharedMemory(
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gfx.mojom.Size pixel_size,
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handle<shared_buffer> scoped_buffer_handle
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);
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// Draws to the HWND by copying pixels from shared memory. Callback must be
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// called after draw operation is complete to signal shared memory can be
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// modified.
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Draw() => ();
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};
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