1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/*
* Copyright (C) 2012,2023 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#pragma once
#include "GLContextWrapper.h"
#include "IntSize.h"
#include "PlatformDisplay.h"
#include <wtf/Noncopyable.h>
#include <wtf/TZoneMalloc.h>
#if !PLATFORM(GTK) && !PLATFORM(WPE)
#include <EGL/eglplatform.h>
typedef EGLNativeWindowType GLNativeWindowType;
#else
typedef uint64_t GLNativeWindowType;
#endif
#if USE(WPE_RENDERER)
struct wpe_renderer_backend_egl_offscreen_target;
#endif
typedef void* GCGLContext;
typedef void* EGLConfig;
typedef void* EGLContext;
typedef void* EGLDisplay;
typedef void* EGLSurface;
namespace WebCore {
class GLContext final : public GLContextWrapper {
WTF_MAKE_TZONE_ALLOCATED(GLContext);
WTF_MAKE_NONCOPYABLE(GLContext);
public:
WEBCORE_EXPORT static std::unique_ptr<GLContext> create(GLNativeWindowType, PlatformDisplay&);
static std::unique_ptr<GLContext> createOffscreen(PlatformDisplay&);
static std::unique_ptr<GLContext> createSharing(PlatformDisplay&);
static GLContext* current();
static bool isExtensionSupported(const char* extensionList, const char* extension);
static unsigned versionFromString(const char* versionString);
static const char* errorString(int statusCode);
static const char* lastErrorString();
enum EGLSurfaceType { PbufferSurface, WindowSurface, PixmapSurface, Surfaceless };
GLContext(PlatformDisplay&, EGLContext, EGLSurface, EGLConfig, EGLSurfaceType);
#if USE(WPE_RENDERER)
GLContext(PlatformDisplay&, EGLContext, EGLSurface, EGLConfig, struct wpe_renderer_backend_egl_offscreen_target*);
#endif
WEBCORE_EXPORT ~GLContext();
PlatformDisplay& display() const { return m_display; }
unsigned version();
EGLConfig config() const { return m_config; }
WEBCORE_EXPORT bool makeContextCurrent();
bool unmakeContextCurrent();
WEBCORE_EXPORT void swapBuffers();
GCGLContext platformContext() const;
struct GLExtensions {
bool OES_texture_npot { false };
bool EXT_unpack_subimage { false };
bool APPLE_sync { false };
bool OES_packed_depth_stencil { false };
};
const GLExtensions& glExtensions() const;
class ScopedGLContext {
WTF_MAKE_NONCOPYABLE(ScopedGLContext);
public:
explicit ScopedGLContext(std::unique_ptr<GLContext>&&);
~ScopedGLContext();
private:
struct {
GLContext* glContext { nullptr };
EGLDisplay display { nullptr };
EGLContext context { nullptr };
EGLSurface readSurface { nullptr };
EGLSurface drawSurface { nullptr };
} m_previous;
std::unique_ptr<GLContext> m_context;
};
class ScopedGLContextCurrent {
WTF_MAKE_NONCOPYABLE(ScopedGLContextCurrent);
public:
explicit ScopedGLContextCurrent(GLContext&);
~ScopedGLContextCurrent();
private:
struct {
GLContext* glContext { nullptr };
EGLDisplay display { nullptr };
EGLContext context { nullptr };
EGLSurface readSurface { nullptr };
EGLSurface drawSurface { nullptr };
} m_previous;
GLContext& m_context;
};
private:
static EGLContext createContextForEGLVersion(PlatformDisplay&, EGLConfig, EGLContext);
static std::unique_ptr<GLContext> createWindowContext(GLNativeWindowType, PlatformDisplay&, EGLContext sharingContext = nullptr);
static std::unique_ptr<GLContext> createPbufferContext(PlatformDisplay&, EGLContext sharingContext = nullptr);
static std::unique_ptr<GLContext> createSurfacelessContext(PlatformDisplay&, EGLContext sharingContext = nullptr);
#if USE(WPE_RENDERER)
static std::unique_ptr<GLContext> createWPEContext(PlatformDisplay&, EGLContext sharingContext = nullptr);
static EGLSurface createWindowSurfaceWPE(EGLDisplay, EGLConfig, GLNativeWindowType);
void destroyWPETarget();
#endif
static bool getEGLConfig(PlatformDisplay&, EGLConfig*, EGLSurfaceType);
// GLContextWrapper
GLContextWrapper::Type type() const override { return GLContextWrapper::Type::Native; }
bool makeCurrentImpl() override;
bool unmakeCurrentImpl() override;
PlatformDisplay& m_display;
unsigned m_version { 0 };
EGLContext m_context { nullptr };
EGLSurface m_surface { nullptr };
EGLConfig m_config { nullptr };
EGLSurfaceType m_type;
#if USE(WPE_RENDERER)
struct wpe_renderer_backend_egl_offscreen_target* m_wpeTarget { nullptr };
#endif
mutable GLExtensions m_glExtensions;
};
} // namespace WebCore
|
