#include <gpu_surface_metal_impeller.h>

Inheritance diagram for flutter::GPUSurfaceMetalImpeller:

Public Member Functions
	GPUSurfaceMetalImpeller (GPUSurfaceMetalDelegate *delegate, const std::shared_ptr< impeller::Context > &context, bool render_to_surface=true)

	~GPUSurfaceMetalImpeller ()

bool	IsValid () override

virtual Surface::SurfaceData	GetSurfaceData () const override

Public Member Functions inherited from flutter::Surface
	Surface ()

virtual	~Surface ()

virtual bool	IsValid ()=0

virtual std::unique_ptr< SurfaceFrame >	AcquireFrame (const SkISize &size)=0

virtual SkMatrix	GetRootTransformation () const =0

virtual GrDirectContext *	GetContext ()=0

virtual std::unique_ptr< GLContextResult >	MakeRenderContextCurrent ()

virtual bool	ClearRenderContext ()

virtual bool	AllowsDrawingWhenGpuDisabled () const

virtual bool	EnableRasterCache () const

virtual std::shared_ptr< impeller::AiksContext >	GetAiksContext () const

virtual SurfaceData	GetSurfaceData () const

Detailed Description

Definition at line 21 of file gpu_surface_metal_impeller.h.

Constructor & Destructor Documentation

◆ GPUSurfaceMetalImpeller()

flutter::GPUSurfaceMetalImpeller::GPUSurfaceMetalImpeller	(	GPUSurfaceMetalDelegate *	delegate,
		const std::shared_ptr< impeller::Context > &	context,
		bool	render_to_surface = `true`
	)

Definition at line 34 of file gpu_surface_metal_impeller.mm.

    : delegate_(delegate),
      render_target_type_(delegate->GetRenderTargetType()),
      impeller_renderer_(CreateImpellerRenderer(context)),
      aiks_context_(
          std::make_shared<impeller::AiksContext>(impeller_renderer_ ? context : nullptr,
                                                  impeller::TypographerContextSkia::Make())),
      render_to_surface_(render_to_surface) {
  // If this preference is explicitly set, we allow for disabling partial repaint.
  NSNumber* disablePartialRepaint =
      [[NSBundle mainBundle] objectForInfoDictionaryKey:@"FLTDisablePartialRepaint"];
  if (disablePartialRepaint != nil) {
    disable_partial_repaint_ = disablePartialRepaint.boolValue;
  }
}

◆ ~GPUSurfaceMetalImpeller()

flutter::GPUSurfaceMetalImpeller::~GPUSurfaceMetalImpeller ( )

default

Member Function Documentation

◆ GetSurfaceData()

Surface::SurfaceData flutter::GPUSurfaceMetalImpeller::GetSurfaceData ( ) const

overridevirtual

Capture the SurfaceData currently present in the surface.

Not guaranteed to work on all setups and not intended to be used in production. The data field will be null if it was unable to work.

Reimplemented from flutter::Surface.

Definition at line 378 of file gpu_surface_metal_impeller.mm.

                                                                 {
  if (!(last_texture_ && [last_texture_ conformsToProtocol:@protocol(MTLTexture)])) {
    return {};
  }
  id<MTLTexture> texture = last_texture_.get();
  int bytesPerPixel = 0;
  std::string pixel_format;
  switch (texture.pixelFormat) {
    case MTLPixelFormatBGR10_XR:
      bytesPerPixel = 4;
      pixel_format = "MTLPixelFormatBGR10_XR";
      break;
    case MTLPixelFormatBGRA10_XR:
      bytesPerPixel = 8;
      pixel_format = "MTLPixelFormatBGRA10_XR";
      break;
    case MTLPixelFormatBGRA8Unorm:
      bytesPerPixel = 4;
      pixel_format = "MTLPixelFormatBGRA8Unorm";
      break;
    case MTLPixelFormatRGBA16Float:
      bytesPerPixel = 8;
      pixel_format = "MTLPixelFormatRGBA16Float";
      break;
    default:
      return {};
  }
 
  // Zero initialized so that errors are easier to find at the cost of
  // performance.
  sk_sp<SkData> result =
      SkData::MakeZeroInitialized(texture.width * texture.height * bytesPerPixel);
  [texture getBytes:result->writable_data()
        bytesPerRow:texture.width * bytesPerPixel
         fromRegion:MTLRegionMake2D(0, 0, texture.width, texture.height)
        mipmapLevel:0];
  return {
      .pixel_format = pixel_format,
      .data = result,
  };
}

◆ IsValid()

bool flutter::GPUSurfaceMetalImpeller::IsValid ( )

overridevirtual

Implements flutter::Surface.

Definition at line 55 of file gpu_surface_metal_impeller.mm.

                                      {
  return !!aiks_context_ && aiks_context_->IsValid();
}

The documentation for this class was generated from the following files:

shell/gpu/gpu_surface_metal_impeller.h
shell/gpu/gpu_surface_metal_impeller.mm