Hello,
Sorry for the re-post, I had the first post in the wrong section.
I’m currently working with OpenCL/OpenGL interop and have it working on OSX.
The only difference in the code between the two operating systems can be seen below:
cl_context_properties props[] = {
0, 0,
0, 0,
0, 0,
0
};
if(interop_f){
#ifdef OCL_LINUX
props[0] = CL_GL_CONTEXT_KHR;
props[1] = (cl_context_properties) glXGetCurrentContext();
props[2] = CL_GLX_DISPLAY_KHR;
props[3] = (cl_context_properties) glXGetCurrentDisplay();
props[4] = CL_CONTEXT_PLATFORM;
props[5] = (cl_context_properties) pID;
#endif
#ifdef OCL_OSX
props[0] = CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE;
props[1] = (cl_context_properties) CGLGetShareGroup( CGLGetCurrentContext() );
#endif
gl_f = 1;
context = clCreateContext(props, 0, 0, NULL, NULL, &err);
}
else
context = clCreateContext(NULL , 1, &dID, NULL, NULL, &err);
The headers are:
#ifdef OCL_OSX
#include
#include
#include
#include
#endif
#ifdef OCL_LINUX
#include
#include
#include
#include
#include
#endif
The overall code works perfectly using the OSX version on a macbook pro that has with an NVIDIA GeForce GT 650M
When I run this on a Linux machine with a GTX 590, I get a segmentation fault.
More specifically, when calling glXGetCurrentDisplay() I get a segmentation fault.
Here’s what GDB backtrace tells me:
(gdb) r
Starting program: /mnt/nfs-main/home/dsm5/documents/project/oclProject/examples/mesh/main
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Setting of real/effective user Id to 0/0 failed
FATAL: Module fglrx not found.
Error! Fail to load fglrx kernel module! Maybe you can switch to root user to load kernel module directly
bt
Xlib: extension "NV-GLX" missing on display "localhost:10.0".
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x0000000000406de2 in ocl::cl::device::refresh (this=0x7fffffffe8b0) at ocl_cl.cpp:330
#2 0x0000000000406ad7 in ocl::cl::device::device (this=0x7fffffffe8b0, p=0x678fa0, d=0x679070) at ocl_cl.cpp:274
#3 0x0000000000406901 in ocl::cl::setup::getDevice (this=0x6319a0, p=1, d=0) at ocl_cl.cpp:239
#4 0x000000000040bca7 in ocl::cl::getDevice (p=1, d=0) at ocl_cl.cpp:1210
#5 0x0000000000424f4d in main (argc=1, argv=0x7fffffffea08) at main.cpp:25
If anyone can help me with this (seemingly) simple problem, I would be extremely grateful since it has been bothering me for weeks!
Any tips are more than welcome as well!
Thank you in advance!
dsm5
P.S.
I don’t think the missing on display is the cause of the error since glxgears runs with the same warning.