| Flutter Impeller |

config.h
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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 #ifndef FLUTTER_IMPELLER_TOOLKIT_EGL_CONFIG_H_
6 #define FLUTTER_IMPELLER_TOOLKIT_EGL_CONFIG_H_
7
8 #include "impeller/toolkit/egl/egl.h"
9
10 namespace impeller {
11 namespace egl {
12
13 enum class API {
14 kOpenGL,
15 kOpenGLES2,
16 kOpenGLES3,
17 };
18
19 enum class Samples {
20 kOne = 1,
21 kTwo = 2,
22 kFour = 4,
23 };
24
25 enum class ColorFormat {
26 kRGBA8888,
27 kRGB565,
28 };
29
30 enum class StencilBits {
31 kZero = 0,
32 kEight = 8,
33 };
34
35 enum class DepthBits {
36 kZero = 0,
37 kEight = 8,
38 kTwentyFour = 24,
39 };
40
41 enum class SurfaceType {
42 kWindow,
43 kPBuffer,
44 };
45
46 struct ConfigDescriptor {
47 API api = API::kOpenGLES2;
48 Samples samples = Samples::kOne;
49 ColorFormat color_format = ColorFormat::kRGB565;
50 StencilBits stencil_bits = StencilBits::kZero;
51 DepthBits depth_bits = DepthBits::kZero;
52 SurfaceType surface_type = SurfaceType::kPBuffer;
53 };
54
55 class Display;
56
57 //------------------------------------------------------------------------------
58 /// @brief An EGL config. These are returned by the display to indicate
59 /// support for a specific config descriptor.
60 ///
61 /// There is no ability to construct these manually except for
62 /// testing.
63 ///
64 class Config {
65 public:
66 ~Config();
67
68 bool IsValid() const;
69
70 const ConfigDescriptor& GetDescriptor() const;
71
72 const EGLConfig& GetHandle() const;
73
74 // Do not use. Only for testing.
75 Config(ConfigDescriptor descriptor, EGLConfig config);
76
77 private:
78 const ConfigDescriptor desc_;
79 EGLConfig config_ = nullptr;
80
81 Config(const Config&) = delete;
82
83 Config& operator=(const Config&) = delete;
84 };
85
86 } // namespace egl
87 } // namespace impeller
88
89 #endif // FLUTTER_IMPELLER_TOOLKIT_EGL_CONFIG_H_
impeller::egl::Samples::kOne
@ kOne
impeller::egl::StencilBits::kEight
@ kEight
impeller::egl::API
API
Definition: config.h:13
impeller::egl::ColorFormat::kRGB565
@ kRGB565
impeller::egl::StencilBits
StencilBits
Definition: config.h:30
impeller::egl::Samples::kTwo
@ kTwo
impeller::egl::DepthBits::kZero
@ kZero
impeller::egl::Config::GetDescriptor
const ConfigDescriptor & GetDescriptor() const
Definition: config.cc:17
impeller::egl::StencilBits::kZero
@ kZero
impeller::egl::DepthBits
DepthBits
Definition: config.h:35
impeller::egl::Config::Config
Config(ConfigDescriptor descriptor, EGLConfig config)
Definition: config.cc:12
egl.h
impeller::egl::SurfaceType
SurfaceType
Definition: config.h:41
impeller::egl::ConfigDescriptor::samples
Samples samples
Definition: config.h:48
impeller::egl::API::kOpenGLES2
@ kOpenGLES2
impeller::egl::ColorFormat
ColorFormat
Definition: config.h:25
impeller::egl::DepthBits::kEight
@ kEight
impeller::egl::Display
A connection to an EGL display. Only one connection per application instance is sufficient.
Definition: display.h:28
impeller::egl::Config::GetHandle
const EGLConfig & GetHandle() const
Definition: config.cc:21
impeller::egl::Config::IsValid
bool IsValid() const
Definition: config.cc:25
impeller::egl::Samples::kFour
@ kFour
impeller::egl::ConfigDescriptor::surface_type
SurfaceType surface_type
Definition: config.h:52
impeller::egl::ConfigDescriptor
Definition: config.h:46
impeller::egl::Config::~Config
~Config()
impeller::egl::API::kOpenGL
@ kOpenGL
impeller::egl::SurfaceType::kWindow
@ kWindow
impeller::egl::Samples
Samples
Definition: config.h:19
impeller::egl::DepthBits::kTwentyFour
@ kTwentyFour
impeller::egl::ColorFormat::kRGBA8888
@ kRGBA8888
impeller::egl::Config
An EGL config. These are returned by the display to indicate support for a specific config descriptor...
Definition: config.h:64
impeller::egl::ConfigDescriptor::color_format
ColorFormat color_format
Definition: config.h:49
impeller
Definition: allocation.cc:12
impeller::egl::API::kOpenGLES3
@ kOpenGLES3
impeller::egl::SurfaceType::kPBuffer
@ kPBuffer
impeller::egl::ConfigDescriptor::stencil_bits
StencilBits stencil_bits
Definition: config.h:50
impeller::egl::ConfigDescriptor::api
API api
Definition: config.h:47
impeller::egl::ConfigDescriptor::depth_bits
DepthBits depth_bits
Definition: config.h:51