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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <inttypes.h>
#include <dlfcn.h>
#include <EGL/egl.h>
#include <GLES2/gl2.h>
#include <api.h>
#include <log.h>
typedef EGLint (EGLAPIENTRY *egl_get_error_t)(void);
typedef EGLDisplay (EGLAPIENTRY *egl_get_display_t)(EGLNativeDisplayType);
typedef EGLBoolean (EGLAPIENTRY *egl_initialize_t)(EGLDisplay, EGLint*, EGLint*);
typedef EGLBoolean (EGLAPIENTRY *egl_terminate_t)(EGLDisplay);
typedef EGLBoolean (EGLAPIENTRY *egl_choose_config_t)(EGLDisplay dpy, const EGLint*, EGLConfig*, EGLint, EGLint*);
typedef EGLSurface (EGLAPIENTRY *egl_create_pbuffer_surface_t)(EGLDisplay, EGLConfig, const EGLint*);
typedef EGLBoolean (EGLAPIENTRY *egl_destroy_surface_t)(EGLDisplay, EGLSurface);
typedef EGLContext (EGLAPIENTRY *egl_create_context_t)(EGLDisplay, EGLConfig, EGLContext, const EGLint*);
typedef EGLBoolean (EGLAPIENTRY *egl_destroy_context_t)(EGLDisplay, EGLContext);
typedef EGLBoolean (EGLAPIENTRY *egl_make_current_t)(EGLDisplay, EGLSurface, EGLSurface, EGLContext);
typedef EGLContext (EGLAPIENTRY *egl_get_current_context_t)(void);
typedef EGLSurface (EGLAPIENTRY *egl_get_current_surface_t)(EGLint);
static const char egl_function_names[] =
"eglGetError\0"
"eglGetDisplay\0"
"eglInitialize\0"
"eglTerminate\0"
"eglChooseConfig\0"
"eglCreatePbufferSurface\0"
"eglDestroySurface\0"
"eglCreateContext\0"
"eglDestroyContext\0"
"eglMakeCurrent\0"
"eglGetCurrentContext\0"
"eglGetCurrentSurface\0";
#define LIBEGL_FUNCTION_COUNT 12
struct libegl {
void* handle;
union {
struct {
egl_get_error_t get_error;
egl_get_display_t get_display;
egl_initialize_t initialize;
egl_terminate_t terminate;
egl_choose_config_t choose_config;
egl_create_pbuffer_surface_t create_pbuffer_surface;
egl_destroy_surface_t destroy_surface;
egl_create_context_t create_context;
egl_destroy_context_t destroy_context;
egl_make_current_t make_current;
egl_get_current_context_t get_current_context;
egl_get_current_surface_t get_current_surface;
};
void* functions[LIBEGL_FUNCTION_COUNT];
};
};
typedef const GLubyte* (GL_APIENTRY *gl_get_string_t)(GLenum);
static const char gles2_function_names[] =
"glGetString\0";
#define LIBGLES2_FUNCTION_COUNT 1
struct libgles2 {
void* handle;
union {
gl_get_string_t get_string;
void* functions[LIBGLES2_FUNCTION_COUNT];
};
};
static bool cpuinfo_gpu_load_libegl(struct libegl egl[restrict static 1]) {
egl->handle = dlopen("libEGL.so", RTLD_LAZY | RTLD_LOCAL);
if (egl->handle == NULL) {
cpuinfo_log_warning("failed to load libEGL.so: %s", dlerror());
goto failed;
}
const char* function_name = egl_function_names;
for (size_t i = 0; i < LIBEGL_FUNCTION_COUNT; i++) {
void* function = dlsym(egl->handle, function_name);
if (function == NULL) {
cpuinfo_log_warning("failed to locate %s in libEGL.so: %s", function_name, dlerror());
goto failed;
}
egl->functions[i] = function;
function_name += strlen(function_name) + 1;
}
return true;
failed:
if (egl->handle != NULL) {
if (dlclose(egl->handle) != 0) {
cpuinfo_log_info("failed to unload libEGL.so: %s", dlerror());
}
}
memset(egl, 0, sizeof(struct libegl));
return false;
}
static bool cpuinfo_gpu_load_gles2(struct libgles2 gles[restrict static 1]) {
gles->handle = dlopen("libGLESv2.so", RTLD_LAZY | RTLD_LOCAL);
if (gles->handle == NULL) {
cpuinfo_log_warning("failed to load libGLESv2.so: %s", dlerror());
goto failed;
}
const char* function_name = gles2_function_names;
for (size_t i = 0; i < LIBGLES2_FUNCTION_COUNT; i++) {
void* function = dlsym(gles->handle, function_name);
if (function == NULL) {
cpuinfo_log_warning("failed to locate %s in libGLESv2.so: %s", function_name, dlerror());
goto failed;
}
gles->functions[i] = function;
function_name += strlen(function_name) + 1;
}
return true;
failed:
if (gles->handle != NULL) {
if (dlclose(gles->handle) != 0) {
cpuinfo_log_info("failed to unload libGLESv2.so: %s", dlerror());
}
}
memset(gles, 0, sizeof(struct libgles2));
return false;
}
bool cpuinfo_gpu_query_gles2(char gpu_name[restrict static CPUINFO_GPU_NAME_MAX]) {
bool success = false;
EGLDisplay display = EGL_NO_DISPLAY;
EGLSurface surface = EGL_NO_SURFACE;
EGLSurface previous_draw_surface = EGL_NO_SURFACE;
EGLSurface previous_read_surface = EGL_NO_SURFACE;
EGLContext context = EGL_NO_CONTEXT;
EGLContext previous_context = EGL_NO_CONTEXT;
EGLBoolean egl_init_success = EGL_FALSE;
EGLBoolean egl_make_current_success = EGL_FALSE;
EGLBoolean egl_success;
struct libegl egl;
struct libgles2 gles2;
if (!cpuinfo_gpu_load_libegl(&egl)) {
return false;
}
if (!cpuinfo_gpu_load_gles2(&gles2)) {
goto cleanup;
}
display = egl.get_display(EGL_DEFAULT_DISPLAY);
if (display == EGL_NO_DISPLAY) {
cpuinfo_log_warning("failed to get default EGL display: error %"PRId32, (int32_t) egl.get_error());
goto cleanup;
}
EGLint egl_major = 0, egl_minor = 0;
egl_init_success = egl.initialize(display, &egl_major, &egl_minor);
if (egl_init_success != EGL_TRUE) {
cpuinfo_log_warning("failed to initialize EGL display connection: error %"PRId32, (int32_t) egl.get_error());
goto cleanup;
}
cpuinfo_log_debug("initialized EGL %"PRId32".%"PRId32" display connection",
(int32_t) egl_major, (int32_t) egl_minor);
/* Get previous state to restore it later */
previous_context = egl.get_current_context();
previous_draw_surface = egl.get_current_surface(EGL_DRAW);
previous_read_surface = egl.get_current_surface(EGL_READ);
EGLint const config_attributes[] = {
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_CONFORMANT, EGL_OPENGL_ES2_BIT,
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_NONE,
};
EGLConfig config = NULL;
EGLint config_count = 0;
egl_success = egl.choose_config(display, config_attributes, &config, 1, &config_count);
if (egl_success != EGL_TRUE || config_count == 0 || config == NULL) {
cpuinfo_log_warning("failed to find EGL framebuffer configuration with required attributes");
goto cleanup;
}
EGLint const surface_attributes[] = {
EGL_HEIGHT, 1,
EGL_WIDTH, 1,
EGL_NONE,
};
surface = egl.create_pbuffer_surface(display, config, surface_attributes);
if (surface == EGL_NO_SURFACE) {
cpuinfo_log_warning("failed to create EGL PBuffer surface: error %"PRId32, (int32_t) egl.get_error());
goto cleanup;
}
EGLint const context_attributes[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE,
};
context = egl.create_context(display, config, EGL_NO_CONTEXT, context_attributes);
if (context == EGL_NO_CONTEXT) {
cpuinfo_log_warning("failed to create OpenGL ES2 context: error %"PRId32, (int32_t) egl.get_error());
goto cleanup;
}
egl_make_current_success = egl.make_current(display, surface, surface, context);
if (egl_make_current_success != EGL_TRUE) {
cpuinfo_log_warning("failed to attach OpenGL ES rendering context: error %"PRId32, (int32_t) egl.get_error());
goto cleanup;
}
const char* renderer = (const char*) gles2.get_string(GL_RENDERER);
if (renderer == NULL) {
cpuinfo_log_warning("failed to get GL_RENDERER for OpenGL ES2 context");
goto cleanup;
}
cpuinfo_log_debug("GL_RENDERER = \"%s\"", renderer);
strncpy(gpu_name, renderer, CPUINFO_GPU_NAME_MAX);
success = true;
cleanup:
if (egl_make_current_success == EGL_TRUE) {
egl.make_current(display, previous_draw_surface, previous_read_surface, previous_context);
}
if (context != EGL_NO_CONTEXT) {
egl.destroy_context(display, context);
}
if (surface != EGL_NO_SURFACE) {
egl.destroy_surface(display, surface);
}
if (egl_init_success == EGL_TRUE) {
egl.terminate(display);
}
if (egl.handle != NULL) {
dlclose(egl.handle);
}
if (gles2.handle != NULL) {
dlclose(gles2.handle);
}
return success;
}
|
