1 /*
2 ** Copyright 2007, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 ** http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17 #ifndef ANDROID_EGL_DISPLAY_H
18 #define ANDROID_EGL_DISPLAY_H
19
20 #include <EGL/egl.h>
21 #include <EGL/eglext.h>
22 #include <stddef.h>
23 #include <stdint.h>
24
25 #include <condition_variable>
26 #include <map>
27 #include <memory>
28 #include <mutex>
29 #include <string>
30 #include <unordered_set>
31
32 #include "../hooks.h"
33 #include "egldefs.h"
34
35 namespace android {
36
37 class egl_object_t;
38 class egl_context_t;
39 struct egl_connection_t;
40
41 bool findExtension(const char* exts, const char* name, size_t nameLen = 0);
42 bool needsAndroidPEglMitigation();
43
44 class EGLAPI egl_display_t { // marked as EGLAPI for testing purposes
45 static std::map<EGLDisplay, std::unique_ptr<egl_display_t>> displayMap;
46 static std::mutex displayMapLock;
47 EGLDisplay getDisplay(EGLNativeDisplayType display);
48 static EGLDisplay getPlatformDisplay(EGLNativeDisplayType display,
49 const EGLAttrib* attrib_list);
50 void loseCurrentImpl(egl_context_t* cur_c);
51
52 public:
53 enum {
54 NOT_INITIALIZED = 0,
55 INITIALIZED = 1,
56 TERMINATED = 2,
57 };
58
59 egl_display_t();
60 ~egl_display_t();
61
62 EGLBoolean initialize(EGLint* major, EGLint* minor);
63 EGLBoolean terminate();
64
65 // add object to this display's list
66 void addObject(egl_object_t* object);
67 // remove object from this display's list
68 void removeObject(egl_object_t* object);
69 // add reference to this object. returns true if this is a valid object.
70 bool getObject(egl_object_t* object) const;
71
72 static egl_display_t* get(EGLDisplay dpy);
73 static EGLDisplay getFromNativeDisplay(EGLNativeDisplayType disp, const EGLAttrib* attrib_list);
74
75 EGLBoolean makeCurrent(egl_context_t* c, egl_context_t* cur_c, EGLSurface draw, EGLSurface read,
76 EGLContext ctx, EGLSurface impl_draw, EGLSurface impl_read,
77 EGLContext impl_ctx);
78 static void loseCurrent(egl_context_t* cur_c);
79
isReady()80 inline bool isReady() const { return (refs > 0); }
isValid()81 inline bool isValid() const { return magic == '_dpy'; }
isAlive()82 inline bool isAlive() const { return isValid(); }
83
getVendorString()84 char const* getVendorString() const { return mVendorString.c_str(); }
getVersionString()85 char const* getVersionString() const { return mVersionString.c_str(); }
getClientApiString()86 char const* getClientApiString() const { return mClientApiString.c_str(); }
getExtensionString()87 char const* getExtensionString() const { return mExtensionString.c_str(); }
88
89 bool haveExtension(const char* name, size_t nameLen = 0) const;
90
getRefsCount()91 inline uint32_t getRefsCount() const { return refs; }
92
93 struct strings_t {
94 char const* vendor;
95 char const* version;
96 char const* clientApi;
97 char const* extensions;
98 };
99
100 struct DisplayImpl {
DisplayImplDisplayImpl101 DisplayImpl() : dpy(EGL_NO_DISPLAY), state(NOT_INITIALIZED) {}
102 EGLDisplay dpy;
103 EGLint state;
104 strings_t queryString;
105 };
106
107 private:
108 uint32_t magic;
109
110 public:
111 DisplayImpl disp;
112 bool finishOnSwap; // property: debug.egl.finish
113 bool traceGpuCompletion; // property: debug.egl.traceGpuCompletion
114 bool hasColorSpaceSupport;
115
116 private:
117 uint32_t refs;
118 bool eglIsInitialized;
119 mutable std::mutex lock;
120 mutable std::mutex refLock;
121 mutable std::condition_variable refCond;
122 std::unordered_set<egl_object_t*> objects;
123 std::string mVendorString;
124 std::string mVersionString;
125 std::string mClientApiString;
126 std::string mExtensionString;
127 };
128
get_display(EGLDisplay dpy)129 inline egl_display_t* get_display(EGLDisplay dpy) {
130 return egl_display_t::get(dpy);
131 }
132
133 egl_display_t* validate_display(EGLDisplay dpy);
134 egl_display_t* validate_display_connection(EGLDisplay dpy, egl_connection_t** outCnx);
135 EGLBoolean validate_display_context(EGLDisplay dpy, EGLContext ctx);
136 EGLBoolean validate_display_surface(EGLDisplay dpy, EGLSurface surface);
137
138 }; // namespace android
139
140 #endif // ANDROID_EGL_DISPLAY_H
141