| Flutter Impeller |

Public Member Functions | List of all members
impeller::testing::MetalScreenshotter Class Reference

`#include <metal_screenshotter.h>`

Inheritance diagram for impeller::testing::MetalScreenshotter:

## Public Member Functions
| MetalScreenshotter (const PlaygroundSwitches &switches)
std::unique_ptr< Screenshot > | MakeScreenshot (AiksContext &aiks_context, const std::shared_ptr< Texture > texture) override
PlaygroundImpl & | GetPlayground () override
Public Member Functions inherited from impeller::testing::Screenshotter
virtual | ~Screenshotter ()=default

## Detailed Description

Converts `Picture`s and `DisplayList`s to `MetalScreenshot`s with the playground backend.

Definition at line 18 of file metal_screenshotter.h.

## Constructor & Destructor Documentation

## ◆ MetalScreenshotter()

impeller::testing::MetalScreenshotter::MetalScreenshotter | ( | const PlaygroundSwitches & | switches | ) |
| explicit

Definition at line 16 of file metal_screenshotter.mm.

16 {
17 FML_CHECK(::glfwInit() == GLFW_TRUE);
18 playground_ = PlaygroundImpl::Create(PlaygroundBackend::kMetal, switches);
19 }
impeller::PlaygroundImpl::Create
static std::unique_ptr< PlaygroundImpl > Create(PlaygroundBackend backend, PlaygroundSwitches switches)
Definition: playground_impl.cc:25
impeller::PlaygroundBackend::kMetal
@ kMetal

References impeller::PlaygroundImpl::Create(), and impeller::kMetal.

## Member Function Documentation

## ◆ GetPlayground()

PlaygroundImpl& impeller::testing::MetalScreenshotter::GetPlayground | ( |  | ) |
| inline override virtual

Implements impeller::testing::Screenshotter.

Definition at line 26 of file metal_screenshotter.h.

26 { return *playground_; }

## ◆ MakeScreenshot()

std::unique_ptr< Screenshot > impeller::testing::MetalScreenshotter::MakeScreenshot | ( | AiksContext & | aiks_context,
|  | const std::shared_ptr< Texture > | texture
| ) |  |
| override virtual

Implements impeller::testing::Screenshotter.

Definition at line 21 of file metal_screenshotter.mm.

23 {
24 @autoreleasepool {
25 id<MTLTexture> metal_texture =
26 std::static_pointer_cast<TextureMTL>(texture)->GetMTLTexture();
27
28 CGColorSpaceRef color_space = CGColorSpaceCreateDeviceRGB();
29 CIImage* ciImage = [[CIImage alloc]
30 initWithMTLTexture:metal_texture
31 options:@{kCIImageColorSpace : (__bridge id)color_space}];
32 CGColorSpaceRelease(color_space);
33 FML_CHECK(ciImage);
34
35 std::shared_ptr<Context> context = playground_->GetContext();
36 std::shared_ptr<ContextMTL> context_mtl =
37 std::static_pointer_cast<ContextMTL>(context);
38 CIContext* cicontext =
39 [CIContext contextWithMTLDevice:context_mtl->GetMTLDevice()];
40 FML_CHECK(context);
41
42 CIImage* flipped = [ciImage
43 imageByApplyingOrientation:kCGImagePropertyOrientationDownMirrored];
44
45 CGImageRef cgImage = [cicontext createCGImage:flipped
46 fromRect:[ciImage extent]];
47
48 // NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks)
49 return std::unique_ptr<MetalScreenshot>(new MetalScreenshot(cgImage));
50 }
51 }

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

- impeller/golden_tests/metal_screenshotter.h
- impeller/golden_tests/metal_screenshotter.mm