i.mx6q linux 3.14.28
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <EGL/egl.h>
#include <GLES/gl.h>
#include <math.h>
#include <time.h>
int main(int argc, char** argv)
{
int fb;
GLint maj, min;
EGLDisplay m_eglDisplay;
printf("OpenGL ES 1.1 DEMO\n");
fb = open("/dev/fb0", O_RDWR);
if(fb < 0)
{
printf("device fb0 open failed[%d : %d]!\n", fb, errno);
goto exit0;
}
m_eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if(EGL_NO_DISPLAY == m_eglDisplay)
{
printf("error: eglGetDisplay returns EGL_NO_DISPLAY\n");
goto exit1;
}
printf("eglGetDisplay() success\n");
if(EGL_FALSE == eglInitialize(m_eglDisplay, &maj, &min))
{
printf("error: eglInitialize() returns EGL_FALSE\n");
goto exit1;
}
printf("eglInitialize() success[%d.%d]\n", maj, min);
... ...
}
Compile options:
CFLAGS += -DLINUX -DEGL_API_FB
LIBS += -lGLESv1_CM -lGAL -lEGL -lVSC -lGAL_egl -lX11
LIBS += -lXdamage -lXfixes -lXext -lxcb -lXau -lXdmcp
Run the app:
root@imx6qsabresd:~# ./gles_demo
OpenGL ES 1.1 DEMO
eglGetDisplay() success
Segmentation fault
So the API call "eglInitialize(m_eglDisplay, &maj, &min)" causes the Segmentation fault. Why?
