command_buffer.h File Reference

#include <memory>
#include <vector>
#include "flutter/lib/gpu/context.h"
#include "flutter/lib/gpu/device_buffer.h"
#include "flutter/lib/gpu/export.h"
#include "flutter/lib/gpu/texture.h"
#include "flutter/lib/ui/dart_wrapper.h"
#include "impeller/geometry/point.h"
#include "impeller/geometry/rect.h"
#include "impeller/renderer/blit_pass.h"
#include "impeller/renderer/command_buffer.h"
#include "impeller/renderer/context.h"
#include "impeller/renderer/render_pass.h"

Go to the source code of this file.

Classes
class	flutter::gpu::CommandBuffer

Namespaces
namespace	flutter
namespace	flutter::gpu

Functions
FLUTTER_GPU_EXPORT bool	InternalFlutterGpu_CommandBuffer_Initialize (Dart_Handle wrapper, flutter::gpu::Context *contextWrapper)
FLUTTER_GPU_EXPORT Dart_Handle	InternalFlutterGpu_CommandBuffer_Submit (flutter::gpu::CommandBuffer *wrapper, Dart_Handle completion_callback)
FLUTTER_GPU_EXPORT Dart_Handle	InternalFlutterGpu_CommandBuffer_CopyBufferToTexture (flutter::gpu::CommandBuffer *wrapper, flutter::gpu::DeviceBuffer *source, int source_offset_in_bytes, int source_length_in_bytes, flutter::gpu::Texture *destination, int destination_x, int destination_y, int destination_width, int destination_height, int mip_level, int slice)
FLUTTER_GPU_EXPORT Dart_Handle	InternalFlutterGpu_CommandBuffer_CopyTextureToBuffer (flutter::gpu::CommandBuffer *wrapper, flutter::gpu::Texture *source, int source_x, int source_y, int source_width, int source_height, flutter::gpu::DeviceBuffer *destination, int destination_offset_in_bytes)
FLUTTER_GPU_EXPORT Dart_Handle	InternalFlutterGpu_CommandBuffer_CopyTextureToTexture (flutter::gpu::CommandBuffer *wrapper, flutter::gpu::Texture *source, flutter::gpu::Texture *destination, int source_x, int source_y, int source_width, int source_height, int destination_x, int destination_y)

Function Documentation

InternalFlutterGpu_CommandBuffer_CopyBufferToTexture()

FLUTTER_GPU_EXPORT Dart_Handle InternalFlutterGpu_CommandBuffer_CopyBufferToTexture ( flutter::gpu::CommandBuffer *  wrapper, flutter::gpu::DeviceBuffer *  source, int  source_offset_in_bytes, int  source_length_in_bytes, flutter::gpu::Texture *  destination, int  destination_x, int  destination_y, int  destination_width, int  destination_height, int  mip_level, int  slice  )

extern

Definition at line 259 of file command_buffer.cc.

               {
  if (!command_buffer->CopyBufferToTexture(
          *source, static_cast<size_t>(source_offset_in_bytes),
          static_cast<size_t>(source_length_in_bytes), *destination,
          impeller::IRect::MakeXYWH(destination_x, destination_y,
                                    destination_width, destination_height),
          static_cast<uint32_t>(mip_level), static_cast<uint32_t>(slice))) {
    return tonic::ToDart("Failed to append copyBufferToTexture");
  }
  return Dart_Null();
}

References command_buffer, impeller::TRect< T >::MakeXYWH(), and tonic::ToDart().

InternalFlutterGpu_CommandBuffer_CopyTextureToBuffer()

FLUTTER_GPU_EXPORT Dart_Handle InternalFlutterGpu_CommandBuffer_CopyTextureToBuffer ( flutter::gpu::CommandBuffer *  wrapper, flutter::gpu::Texture *  source, int  source_x, int  source_y, int  source_width, int  source_height, flutter::gpu::DeviceBuffer *  destination, int  destination_offset_in_bytes  )

extern

Definition at line 282 of file command_buffer.cc.

                                     {
  if (!command_buffer->CopyTextureToBuffer(
          *source,
          impeller::IRect::MakeXYWH(source_x, source_y, source_width,
                                    source_height),
          *destination, static_cast<size_t>(destination_offset_in_bytes))) {
    return tonic::ToDart("Failed to append copyTextureToBuffer");
  }
  return Dart_Null();
}

References command_buffer, impeller::TRect< T >::MakeXYWH(), and tonic::ToDart().

InternalFlutterGpu_CommandBuffer_CopyTextureToTexture()

FLUTTER_GPU_EXPORT Dart_Handle InternalFlutterGpu_CommandBuffer_CopyTextureToTexture ( flutter::gpu::CommandBuffer *  wrapper, flutter::gpu::Texture *  source, flutter::gpu::Texture *  destination, int  source_x, int  source_y, int  source_width, int  source_height, int  destination_x, int  destination_y  )

extern

Definition at line 301 of file command_buffer.cc.

                       {
  if (!command_buffer->CopyTextureToTexture(
          *source, *destination,
          impeller::IRect::MakeXYWH(source_x, source_y, source_width,
                                    source_height),
          impeller::IPoint(destination_x, destination_y))) {
    return tonic::ToDart("Failed to append copyTextureToTexture");
  }
  return Dart_Null();
}

References command_buffer, impeller::TRect< T >::MakeXYWH(), and tonic::ToDart().

InternalFlutterGpu_CommandBuffer_Initialize()

FLUTTER_GPU_EXPORT bool InternalFlutterGpu_CommandBuffer_Initialize ( Dart_Handle  wrapper, flutter::gpu::Context *  contextWrapper  )

extern

Exports

Definition at line 197 of file command_buffer.cc.

                                       {
  auto res = fml::MakeRefCounted<flutter::gpu::CommandBuffer>(
      contextWrapper->GetContextShared(),
      contextWrapper->GetContext().CreateCommandBuffer());
  res->AssociateWithDartWrapper(wrapper);
 
  return true;
}

References impeller::Context::CreateCommandBuffer(), flutter::gpu::Context::GetContext(), and flutter::gpu::Context::GetContextShared().

InternalFlutterGpu_CommandBuffer_Submit()

FLUTTER_GPU_EXPORT Dart_Handle InternalFlutterGpu_CommandBuffer_Submit ( flutter::gpu::CommandBuffer *  wrapper, Dart_Handle  completion_callback  )

extern

Definition at line 208 of file command_buffer.cc.

                                     {
  if (Dart_IsNull(completion_callback)) {
    bool success = wrapper->Submit();
    if (!success) {
      return tonic::ToDart("Failed to submit CommandBuffer");
    }
    return Dart_Null();
  }
 
  if (!Dart_IsClosure(completion_callback)) {
    return tonic::ToDart("Completion callback must be a function");
  }
 
  auto dart_state = flutter::UIDartState::Current();
  auto& task_runners = dart_state->GetTaskRunners();
 
  auto persistent_completion_callback =
      std::make_unique<tonic::DartPersistentValue>(dart_state,
                                                   completion_callback);
 
  auto ui_task_completion_callback = fml::MakeCopyable(
      [callback = std::move(persistent_completion_callback),
       task_runners](impeller::CommandBuffer::Status status) mutable {
        bool success = status != impeller::CommandBuffer::Status::kError;
 
        auto ui_completion_task = fml::MakeCopyable(
            [callback = std::move(callback), success]() mutable {
              auto dart_state = callback->dart_state().lock();
              if (!dart_state) {
                // The root isolate could have died in the meantime.
                return;
              }
              tonic::DartState::Scope scope(dart_state);
 
              tonic::DartInvoke(callback->Get(), {tonic::ToDart(success)});
 
              // callback is associated with the Dart isolate and must be
              // deleted on the UI thread.
              callback.reset();
            });
        task_runners.GetUITaskRunner()->PostTask(ui_completion_task);
      });
  bool success = wrapper->Submit(ui_task_completion_callback);
  if (!success) {
    return tonic::ToDart("Failed to submit CommandBuffer");
  }
  return Dart_Null();
}

References callback, flutter::UIDartState::Current(), tonic::DartInvoke(), impeller::CommandBuffer::kError, fml::MakeCopyable(), flutter::gpu::CommandBuffer::Submit(), and tonic::ToDart().