surface.cc File Reference

#include "flutter/lib/gpu/surface.h"
#include <cstdint>
#include "flutter/lib/gpu/formats.h"
#include "flutter/lib/ui/painting/image.h"
#include "fml/logging.h"
#include "impeller/core/allocator.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, Surface)
Dart_Handle	InternalFlutterGpu_Surface_Initialize (Dart_Handle wrapper, flutter::gpu::Context *gpu_context, int width, int height, int format)
int	InternalFlutterGpu_Surface_AcquireNextFrame (flutter::gpu::Surface *wrapper, Dart_Handle texture_wrapper)
Dart_Handle	InternalFlutterGpu_Surface_PresentFrame (flutter::gpu::Surface *wrapper, int texture_index, flutter::gpu::CommandBuffer *command_buffer)
void	InternalFlutterGpu_Surface_DiscardFrame (flutter::gpu::Surface *wrapper, int texture_index)
Dart_Handle	InternalFlutterGpu_Surface_GetCurrentImage (flutter::gpu::Surface *wrapper)
Dart_Handle	InternalFlutterGpu_Surface_Resize (flutter::gpu::Surface *wrapper, int width, int height)
int	InternalFlutterGpu_Surface_GetBackingTextureCount (flutter::gpu::Surface *wrapper)

Function Documentation

InternalFlutterGpu_Surface_AcquireNextFrame()

int InternalFlutterGpu_Surface_AcquireNextFrame	(	flutter::gpu::Surface *	wrapper,
		Dart_Handle	texture_wrapper
	)

Definition at line 276 of file surface.cc.

                                                                             {
  return wrapper->AcquireNextFrame(texture_wrapper);
}

References flutter::gpu::Surface::AcquireNextFrame().

InternalFlutterGpu_Surface_DiscardFrame()

void InternalFlutterGpu_Surface_DiscardFrame	(	flutter::gpu::Surface *	wrapper,
		int	texture_index
	)

Definition at line 292 of file surface.cc.

                                                                {
  if (texture_index < 0) {
    return;
  }
  wrapper->DiscardFrame(static_cast<size_t>(texture_index));
}

References flutter::gpu::Surface::DiscardFrame().

InternalFlutterGpu_Surface_GetBackingTextureCount()

int InternalFlutterGpu_Surface_GetBackingTextureCount

(

flutter::gpu::Surface *

wrapper

)

Definition at line 318 of file surface.cc.

                                {
  return static_cast<int>(wrapper->GetBackingTextureCount());
}

References flutter::gpu::Surface::GetBackingTextureCount().

InternalFlutterGpu_Surface_GetCurrentImage()

Dart_Handle InternalFlutterGpu_Surface_GetCurrentImage

(

flutter::gpu::Surface *

wrapper

)

Definition at line 300 of file surface.cc.

                                {
  return wrapper->GetCurrentImage();
}

References flutter::gpu::Surface::GetCurrentImage().

InternalFlutterGpu_Surface_Initialize()

Dart_Handle InternalFlutterGpu_Surface_Initialize	(	Dart_Handle	wrapper,
		flutter::gpu::Context *	gpu_context,
		int	width,
		int	height,
		int	format
	)

Exports

Definition at line 250 of file surface.cc.

                                 {
  if (width <= 0 || height <= 0) {
    return tonic::ToDart("GpuSurface dimensions must be greater than zero.");
  }
 
#if !IMPELLER_SUPPORTS_RENDERING
  return tonic::ToDart("GpuSurface requires Impeller rendering support.");
#else
  auto pixel_format = flutter::gpu::ToImpellerPixelFormat(format);
  if (pixel_format == impeller::PixelFormat::kUnknown) {
    return tonic::ToDart("Unsupported GpuSurface pixel format.");
  }
 
  auto res = fml::MakeRefCounted<flutter::gpu::Surface>(
      gpu_context->GetContextShared(), impeller::ISize{width, height},
      pixel_format);
  res->AssociateWithDartWrapper(wrapper);
  return Dart_Null();
#endif
}

References format, height, impeller::kUnknown, tonic::ToDart(), flutter::gpu::ToImpellerPixelFormat(), and width.

InternalFlutterGpu_Surface_PresentFrame()

Dart_Handle InternalFlutterGpu_Surface_PresentFrame	(	flutter::gpu::Surface *	wrapper,
		int	texture_index,
		flutter::gpu::CommandBuffer *	command_buffer
	)

Definition at line 281 of file surface.cc.

                                             {
  if (texture_index < 0) {
    return tonic::ToDart("Invalid SurfaceFrame texture index.");
  }
  return wrapper->PresentFrame(static_cast<size_t>(texture_index),
                               *command_buffer);
}

References command_buffer, flutter::gpu::Surface::PresentFrame(), and tonic::ToDart().

InternalFlutterGpu_Surface_Resize()

Dart_Handle InternalFlutterGpu_Surface_Resize	(	flutter::gpu::Surface *	wrapper,
		int	width,
		int	height
	)

Definition at line 305 of file surface.cc.

                                                          {
  if (width <= 0 || height <= 0) {
    return tonic::ToDart("GpuSurface dimensions must be greater than zero.");
  }
  auto error = wrapper->Resize(impeller::ISize{width, height});
  if (error.has_value()) {
    return tonic::ToDart(error.value());
  }
  return Dart_Null();
}

References error, height, flutter::gpu::Surface::Resize(), tonic::ToDart(), and width.