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759d173073
Part of https://github.com/flutter/flutter/issues/150953. Provide a way to get the required minimum uniform byte alignment when referencing uniform blocks in a device buffer. Allow the user to explicitly flush DeviceBuffers (necessary for devices without shared memory).
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
// Copyright 2013 The Flutter 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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#ifndef FLUTTER_LIB_GPU_DEVICE_BUFFER_H_
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#define FLUTTER_LIB_GPU_DEVICE_BUFFER_H_
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#include "flutter/lib/gpu/context.h"
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#include "flutter/lib/gpu/export.h"
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#include "flutter/lib/ui/dart_wrapper.h"
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#include "third_party/tonic/typed_data/dart_byte_data.h"
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namespace flutter {
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namespace gpu {
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class DeviceBuffer : public RefCountedDartWrappable<DeviceBuffer> {
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DEFINE_WRAPPERTYPEINFO();
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FML_FRIEND_MAKE_REF_COUNTED(DeviceBuffer);
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public:
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explicit DeviceBuffer(std::shared_ptr<impeller::DeviceBuffer> device_buffer);
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~DeviceBuffer() override;
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std::shared_ptr<impeller::DeviceBuffer> GetBuffer();
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bool Overwrite(const tonic::DartByteData& source_bytes,
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size_t destination_offset_in_bytes);
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private:
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std::shared_ptr<impeller::DeviceBuffer> device_buffer_;
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FML_DISALLOW_COPY_AND_ASSIGN(DeviceBuffer);
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};
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} // namespace gpu
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} // namespace flutter
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//----------------------------------------------------------------------------
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/// Exports
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///
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extern "C" {
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FLUTTER_GPU_EXPORT
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extern bool InternalFlutterGpu_DeviceBuffer_Initialize(
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Dart_Handle wrapper,
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flutter::gpu::Context* gpu_context,
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int storage_mode,
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int size_in_bytes);
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FLUTTER_GPU_EXPORT
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extern bool InternalFlutterGpu_DeviceBuffer_InitializeWithHostData(
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Dart_Handle wrapper,
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flutter::gpu::Context* gpu_context,
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Dart_Handle byte_data);
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FLUTTER_GPU_EXPORT
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extern bool InternalFlutterGpu_DeviceBuffer_Overwrite(
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flutter::gpu::DeviceBuffer* wrapper,
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Dart_Handle source_byte_data,
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int destination_offset_in_bytes);
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FLUTTER_GPU_EXPORT
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extern bool InternalFlutterGpu_DeviceBuffer_Flush(
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flutter::gpu::DeviceBuffer* wrapper,
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int offset_in_bytes,
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int size_in_bytes);
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} // extern "C"
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#endif // FLUTTER_LIB_GPU_DEVICE_BUFFER_H_
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