| Flutter Impeller |

metal_screenshotter.mm
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "flutter/impeller/golden_tests/metal_screenshotter.h"
6
7 #include <CoreImage/CoreImage.h>
8 #include "impeller/renderer/backend/metal/context_mtl.h"
9 #include "impeller/renderer/backend/metal/texture_mtl.h"
10 #define GLFW_INCLUDE_NONE
11 #include "third_party/glfw/include/GLFW/glfw3.h"
12
13 namespace impeller {
14 namespace testing {
15
16 MetalScreenshotter::MetalScreenshotter(bool enable_wide_gamut) {
17 FML_CHECK(::glfwInit() == GLFW_TRUE);
18 PlaygroundSwitches switches;
19 switches.enable_wide_gamut = enable_wide_gamut;
20 playground_ = PlaygroundImpl::Create(PlaygroundBackend::kMetal, switches);
21 }
22
23 std::unique_ptr<Screenshot> MetalScreenshotter::MakeScreenshot(
24 AiksContext& aiks_context,
25 const Picture& picture,
26 const ISize& size,
27 bool scale_content) {
28 Vector2 content_scale =
29 scale_content ? playground_->GetContentScale() : Vector2{1, 1};
30 std::shared_ptr<Image> image = picture.ToImage(
31 aiks_context,
32 ISize(size.width * content_scale.x, size.height * content_scale.y));
33 std::shared_ptr<Texture> texture = image->GetTexture();
34 id<MTLTexture> metal_texture =
35 std::static_pointer_cast<TextureMTL>(texture)->GetMTLTexture();
36
37 CGColorSpaceRef color_space = CGColorSpaceCreateDeviceRGB();
38 CIImage* ciImage = [[CIImage alloc]
39 initWithMTLTexture:metal_texture
40 options:@{kCIImageColorSpace : (__bridge id)color_space}];
41 CGColorSpaceRelease(color_space);
42 FML_CHECK(ciImage);
43
44 std::shared_ptr<Context> context = playground_->GetContext();
45 std::shared_ptr<ContextMTL> context_mtl =
46 std::static_pointer_cast<ContextMTL>(context);
47 CIContext* cicontext =
48 [CIContext contextWithMTLDevice:context_mtl->GetMTLDevice()];
49 FML_CHECK(context);
50
51 CIImage* flipped = [ciImage
52 imageByApplyingOrientation:kCGImagePropertyOrientationDownMirrored];
53
54 CGImageRef cgImage = [cicontext createCGImage:flipped
55 fromRect:[ciImage extent]];
56
57 return std::unique_ptr<MetalScreenshot>(new MetalScreenshot(cgImage));
58 }
59
60 } // namespace testing
61 } // namespace impeller
impeller::ISize
ISize64 ISize
Definition: size.h:140
impeller::TPoint::y
Type y
Definition: point.h:31
impeller::AiksContext
Definition: aiks_context.h:19
impeller::testing::MetalScreenshot
A screenshot that was produced from MetalScreenshotter.
Definition: metal_screenshot.h:18
context_mtl.h
impeller::PlaygroundBackend::kMetal
@ kMetal
impeller::testing::MetalScreenshotter::MetalScreenshotter
MetalScreenshotter(bool enable_wide_gamut)
Definition: metal_screenshotter.mm:16
impeller::PlaygroundSwitches::enable_wide_gamut
bool enable_wide_gamut
Definition: switches.h:35
impeller::testing::MetalScreenshotter::MakeScreenshot
std::unique_ptr< Screenshot > MakeScreenshot(AiksContext &aiks_context, const Picture &picture, const ISize &size={300, 300}, bool scale_content=true) override
Definition: metal_screenshotter.mm:23
impeller::Picture
Definition: picture.h:17
impeller::TSize
Definition: size.h:19
impeller::TSize::width
Type width
Definition: size.h:22
impeller::PlaygroundImpl::Create
static std::unique_ptr< PlaygroundImpl > Create(PlaygroundBackend backend, PlaygroundSwitches switches)
Definition: playground_impl.cc:25
impeller::TPoint::x
Type x
Definition: point.h:30
impeller::Picture::ToImage
std::shared_ptr< Image > ToImage(AiksContext &context, ISize size) const
Definition: picture.cc:31
impeller::PlaygroundSwitches
Definition: switches.h:15
impeller::TPoint< Scalar >
texture_mtl.h
impeller::TSize::height
Type height
Definition: size.h:23
metal_screenshotter.h
impeller
Definition: aiks_blend_unittests.cc:18