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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 };
39
40 enum class SurfaceType {
41 kWindow,
42 kPBuffer,
43 };
44
45 struct ConfigDescriptor {
46 API api = API::kOpenGLES2;
47 Samples samples = Samples::kOne;
48 ColorFormat color_format = ColorFormat::kRGB565;
49 StencilBits stencil_bits = StencilBits::kZero;
50 DepthBits depth_bits = DepthBits::kZero;
51 SurfaceType surface_type = SurfaceType::kPBuffer;
52 };
53
54 class Display;
55
56 //------------------------------------------------------------------------------
57 /// @brief An EGL config. These are returned by the display to indicate
58 /// support for a specific config descriptor.
59 ///
60 /// There is no ability to construct these manually except for
61 /// testing.
62 ///
63 class Config {
64 public:
65 ~Config();
66
67 bool IsValid() const;
68
69 const ConfigDescriptor& GetDescriptor() const;
70
71 const EGLConfig& GetHandle() const;
72
73 // Do not use. Only for testing.
74 Config(ConfigDescriptor descriptor, EGLConfig config);
75
76 private:
77 const ConfigDescriptor desc_;
78 EGLConfig config_ = nullptr;
79
80 Config(const Config&) = delete;
81
82 Config& operator=(const Config&) = delete;
83 };
84
85 } // namespace egl
86 } // namespace impeller
87
88 #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:40
impeller::egl::ConfigDescriptor::samples
Samples samples
Definition: config.h:47
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:51
impeller::egl::ConfigDescriptor
Definition: config.h:45
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::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:63
impeller::egl::ConfigDescriptor::color_format
ColorFormat color_format
Definition: config.h:48
impeller
Definition: aiks_blend_unittests.cc:18
impeller::egl::API::kOpenGLES3
@ kOpenGLES3
impeller::egl::SurfaceType::kPBuffer
@ kPBuffer
impeller::egl::ConfigDescriptor::stencil_bits
StencilBits stencil_bits
Definition: config.h:49
impeller::egl::ConfigDescriptor::api
API api
Definition: config.h:46
impeller::egl::ConfigDescriptor::depth_bits
DepthBits depth_bits
Definition: config.h:50