command_buffer.cc File Reference

#include "flutter/lib/gpu/command_buffer.h"
#include "dart_api.h"
#include "fml/make_copyable.h"
#include "impeller/core/buffer_view.h"
#include "impeller/renderer/command_buffer.h"
#include "impeller/renderer/render_pass.h"
#include "lib/ui/ui_dart_state.h"
#include "tonic/converter/dart_converter.h"

Go to the source code of this file.

Namespaces
namespace	flutter
namespace	flutter::gpu

Functions
	flutter::gpu::IMPLEMENT_WRAPPERTYPEINFO (flutter_gpu, CommandBuffer)
bool	InternalFlutterGpu_CommandBuffer_Initialize (Dart_Handle wrapper, flutter::gpu::Context *contextWrapper)
Dart_Handle	InternalFlutterGpu_CommandBuffer_Submit (flutter::gpu::CommandBuffer *wrapper, Dart_Handle completion_callback)
Dart_Handle	InternalFlutterGpu_CommandBuffer_CopyBufferToTexture (flutter::gpu::CommandBuffer *command_buffer, 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)
Dart_Handle	InternalFlutterGpu_CommandBuffer_CopyTextureToBuffer (flutter::gpu::CommandBuffer *command_buffer, 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)
Dart_Handle	InternalFlutterGpu_CommandBuffer_CopyTextureToTexture (flutter::gpu::CommandBuffer *command_buffer, 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()

Dart_Handle InternalFlutterGpu_CommandBuffer_CopyBufferToTexture	(	flutter::gpu::CommandBuffer *	command_buffer,
		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
	)

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()

Dart_Handle InternalFlutterGpu_CommandBuffer_CopyTextureToBuffer	(	flutter::gpu::CommandBuffer *	command_buffer,
		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
	)

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()

Dart_Handle InternalFlutterGpu_CommandBuffer_CopyTextureToTexture	(	flutter::gpu::CommandBuffer *	command_buffer,
		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
	)

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()

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

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()

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

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().