device_buffer.h File Reference

#include "flutter/lib/gpu/context.h"
#include "flutter/lib/gpu/export.h"
#include "flutter/lib/ui/dart_wrapper.h"
#include "third_party/tonic/typed_data/dart_byte_data.h"

Go to the source code of this file.

Classes
class	flutter::gpu::DeviceBuffer

Namespaces
namespace	flutter
namespace	flutter::gpu

Functions
FLUTTER_GPU_EXPORT bool	InternalFlutterGpu_DeviceBuffer_Initialize (Dart_Handle wrapper, flutter::gpu::Context *gpu_context, int storage_mode, int size_in_bytes)
FLUTTER_GPU_EXPORT bool	InternalFlutterGpu_DeviceBuffer_InitializeWithHostData (Dart_Handle wrapper, flutter::gpu::Context *gpu_context, Dart_Handle byte_data)
FLUTTER_GPU_EXPORT bool	InternalFlutterGpu_DeviceBuffer_Overwrite (flutter::gpu::DeviceBuffer *wrapper, Dart_Handle source_byte_data, int destination_offset_in_bytes)
FLUTTER_GPU_EXPORT bool	InternalFlutterGpu_DeviceBuffer_Flush (flutter::gpu::DeviceBuffer *wrapper, int offset_in_bytes, int size_in_bytes)

Function Documentation

InternalFlutterGpu_DeviceBuffer_Flush()

FLUTTER_GPU_EXPORT bool InternalFlutterGpu_DeviceBuffer_Flush ( flutter::gpu::DeviceBuffer *  wrapper, int  offset_in_bytes, int  size_in_bytes  )

extern

Definition at line 108 of file device_buffer.cc.

                       {
  device_buffer->GetBuffer()->Flush(
      impeller::Range(offset_in_bytes, size_in_bytes));
  return true;
}

References flutter::gpu::DeviceBuffer::GetBuffer().

InternalFlutterGpu_DeviceBuffer_Initialize()

FLUTTER_GPU_EXPORT bool InternalFlutterGpu_DeviceBuffer_Initialize ( Dart_Handle  wrapper, flutter::gpu::Context *  gpu_context, int  storage_mode, int  size_in_bytes  )

extern

Exports

Definition at line 50 of file device_buffer.cc.

                       {
  impeller::DeviceBufferDescriptor desc;
  desc.storage_mode = flutter::gpu::ToImpellerStorageMode(storage_mode);
  desc.size = size_in_bytes;
  auto device_buffer =
      gpu_context->GetContext().GetResourceAllocator()->CreateBuffer(desc);
  if (!device_buffer) {
    FML_LOG(ERROR) << "Failed to create device buffer.";
    return false;
  }
 
  auto res =
      fml::MakeRefCounted<flutter::gpu::DeviceBuffer>(std::move(device_buffer));
  res->AssociateWithDartWrapper(wrapper);
 
  return true;
}

References FML_LOG, flutter::gpu::Context::GetContext(), impeller::Context::GetResourceAllocator(), impeller::DeviceBufferDescriptor::size, impeller::DeviceBufferDescriptor::storage_mode, and flutter::gpu::ToImpellerStorageMode().

InternalFlutterGpu_DeviceBuffer_InitializeWithHostData()

FLUTTER_GPU_EXPORT bool InternalFlutterGpu_DeviceBuffer_InitializeWithHostData ( Dart_Handle  wrapper, flutter::gpu::Context *  gpu_context, Dart_Handle  byte_data  )

extern

Definition at line 72 of file device_buffer.cc.

                           {
  std::shared_ptr<impeller::DeviceBuffer> device_buffer = nullptr;
  {
    // `DartByteData` gets raw pointers into the Dart heap via
    // `Dart_TypedDataAcquireData`. So it must be destructed before
    // `AssociateWithDartWrapper` is called, which mutates the heap.
    auto data = tonic::DartByteData(byte_data);
    auto mapping = fml::NonOwnedMapping(reinterpret_cast<uint8_t*>(data.data()),
                                        data.length_in_bytes());
    device_buffer =
        gpu_context->GetContext().GetResourceAllocator()->CreateBufferWithCopy(
            mapping);
  }
  if (!device_buffer) {
    FML_LOG(ERROR) << "Failed to create device buffer with copy.";
    return false;
  }
 
  auto res =
      fml::MakeRefCounted<flutter::gpu::DeviceBuffer>(std::move(device_buffer));
  res->AssociateWithDartWrapper(wrapper);
 
  return true;
}

References data, FML_LOG, flutter::gpu::Context::GetContext(), and impeller::Context::GetResourceAllocator().

InternalFlutterGpu_DeviceBuffer_Overwrite()

FLUTTER_GPU_EXPORT bool InternalFlutterGpu_DeviceBuffer_Overwrite ( flutter::gpu::DeviceBuffer *  wrapper, Dart_Handle  source_byte_data, int  destination_offset_in_bytes  )

extern

Definition at line 100 of file device_buffer.cc.

                                     {
  return device_buffer->Overwrite(tonic::DartByteData(source_byte_data),
                                  destination_offset_in_bytes);
}

References flutter::gpu::DeviceBuffer::Overwrite().