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
|
// SPDX-License-Identifier: BSD-3-Clause
/*
* egl_retry.c - EGL/GLES2 offscreen probe with an explicit eglMakeCurrent
* retry loop. The r581-era trace showed the glsi engine-init returning
* 0xee00001 ("busy") exactly once and setting the device state bit 0x20;
* eglcore does not retry. This probe retries the make-current (and the whole
* display/context creation) up to N times, printing the precise EGL error of
* every attempt, so we can tell "one-shot busy, retry succeeds" from
* "permanent failure".
*
* Build (guest): gcc -O2 -o egl_retry egl_retry.c -lEGL -lGLESv2
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
static EGLDisplay get_device_display(void)
{
PFNEGLGETPLATFORMDISPLAYEXTPROC gp =
(PFNEGLGETPLATFORMDISPLAYEXTPROC)eglGetProcAddress(
"eglGetPlatformDisplayEXT");
PFNEGLQUERYDEVICESEXTPROC qd =
(PFNEGLQUERYDEVICESEXTPROC)eglGetProcAddress(
"eglQueryDevicesEXT");
EGLDeviceEXT devs[8];
EGLint n = 0;
if (!gp || !qd || !qd(8, devs, &n) || n <= 0)
return EGL_NO_DISPLAY;
printf("EGL_DEVICES n=%d\n", n);
return gp(EGL_PLATFORM_DEVICE_EXT, devs[0], NULL);
}
int main(int argc, char **argv)
{
int tries = argc > 1 ? atoi(argv[1]) : 10;
EGLDisplay dpy;
EGLint major = 0, minor = 0;
EGLConfig cfg;
EGLint ncfg = 0;
EGLSurface surf;
EGLContext ctx = EGL_NO_CONTEXT;
EGLint attrs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8, EGL_NONE
};
EGLint pb[] = { EGL_WIDTH, 64, EGL_HEIGHT, 64, EGL_NONE };
EGLint cattr[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
int i;
setvbuf(stdout, NULL, _IONBF, 0);
dpy = get_device_display();
if (dpy == EGL_NO_DISPLAY) {
printf("NO_DEVICE_DISPLAY\n");
return 1;
}
if (!eglInitialize(dpy, &major, &minor)) {
printf("EGL_INIT_FAIL 0x%x\n", eglGetError());
return 1;
}
printf("EGL_INIT ok %d.%d vendor=%s\n", major, minor,
eglQueryString(dpy, EGL_VENDOR));
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
printf("BIND_API_FAIL 0x%x\n", eglGetError());
return 1;
}
if (!eglChooseConfig(dpy, attrs, &cfg, 1, &ncfg) || ncfg < 1) {
printf("CHOOSE_CONFIG_FAIL 0x%x n=%d\n", eglGetError(), ncfg);
return 1;
}
for (i = 0; i < tries; i++) {
surf = eglCreatePbufferSurface(dpy, cfg, pb);
if (surf == EGL_NO_SURFACE) {
printf("TRY %d CREATE_SURFACE_FAIL 0x%x\n", i + 1,
eglGetError());
usleep(200000);
continue;
}
if (ctx == EGL_NO_CONTEXT) {
ctx = eglCreateContext(dpy, cfg, EGL_NO_CONTEXT,
cattr);
if (ctx == EGL_NO_CONTEXT) {
printf("TRY %d CREATE_CTX_FAIL 0x%x\n", i + 1,
eglGetError());
eglDestroySurface(dpy, surf);
usleep(200000);
continue;
}
}
if (eglMakeCurrent(dpy, surf, surf, ctx)) {
const char *rend = (const char *)glGetString(
GL_RENDERER);
const char *ver = (const char *)glGetString(
GL_VERSION);
printf("TRY %d CURRENT OK renderer=%s version=%s\n",
i + 1, rend ? rend : "?", ver ? ver : "?");
/* draw one clear + readback so the pipeline runs */
glClearColor(0.1f, 0.4f, 0.9f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
{
unsigned char px[4];
glReadPixels(0, 0, 1, 1, GL_RGBA,
GL_UNSIGNED_BYTE, px);
printf("PIXEL %02x%02x%02x%02x\n", px[0],
px[1], px[2], px[3]);
}
printf("EGL_RETRY_OK on try %d\n", i + 1);
return 0;
}
printf("TRY %d MAKE_CURRENT_FAIL 0x%x\n", i + 1,
eglGetError());
eglDestroySurface(dpy, surf);
usleep(200000);
}
printf("EGL_RETRY_EXHAUSTED tries=%d\n", tries);
return 1;
}
|
