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#include "boring_parts.h"
// TODO : only need OpenGL things, not GTK ones for now
//#include "gtk_includes.h"
#define RETURN_IF_FAIL(expr) do { \
int res=(expr); \
if ( res != 0 ) return res; \
} while(0)
// TODO : print streamsdk::getOpenCLErrorCodeStr(res)
#define CL_RETURN_VAL_IF_FAIL(val, expr) do { \
cl_int res=(expr); \
if ( res != CL_SUCCESS ) { \
std::cerr << "file " << __FILE__ << ": line " << __LINE__ << " (" << __PRETTY_FUNCTION__ \
<< "): '" << "expr" << "' failed (return code : " << res << ")" << std::endl; \
return val; \
} \
} while(0)
int initLibs() {
#ifdef HAS_OPENCL
RETURN_IF_FAIL( initOpenCL() );
#endif /*HAS_OPENCL*/
return 0;
}
#ifdef HAS_OPENCL
int initOpenCL() {
cl_uint id, numPlatforms, numDevices;
char pbuf[100];
std::string dTypeStr;
cl_platform_id *platforms, platform;
cl_device_id *devices, device;
// Get platform count
CL_RETURN_VAL_IF_FAIL(1,
clGetPlatformIDs(0, NULL, &numPlatforms)
);
std::cout << "Detected " << numPlatforms << " platform(s)" << std::endl;
if ( ! ( numPlatforms > 0 ) ) return 2;
// Allocate room for all platform IDs
platforms = new cl_platform_id[numPlatforms];
// Get platform IDs
CL_RETURN_VAL_IF_FAIL(3,
clGetPlatformIDs(numPlatforms, platforms, &numPlatforms)
);
// Enumerate platforms and grab informations
for(id=0;id<numPlatforms;id++) {
CL_RETURN_VAL_IF_FAIL(4,
clGetPlatformInfo(platforms[id], CL_PLATFORM_VENDOR, sizeof(pbuf), pbuf, NULL)
);
std::cout << "Platform " << id << " : " << pbuf << std::endl;
}
// Take the first one FIXME : do more !
platform = platforms[0];
// Get device count
CL_RETURN_VAL_IF_FAIL(11,
clGetDeviceIDs(platform,CL_DEVICE_TYPE_ALL,0,NULL,&numDevices)
);
std::cout << "\tDetected " << numDevices << " device(s) for platform " << platform << std::endl;
if ( ! ( numDevices > 0 ) ) return 12;
// Allocate room for all devices IDs
devices = new cl_device_id[numDevices];
// Get devices IDs
CL_RETURN_VAL_IF_FAIL(13,
clGetDeviceIDs(platform,CL_DEVICE_TYPE_ALL,numDevices,devices,&numDevices)
);
// Enumerate devices and grab informations
for(id=0;id<numDevices;id++) {
cl_device_type dType;
CL_RETURN_VAL_IF_FAIL(14,
clGetDeviceInfo(devices[id], CL_DEVICE_TYPE, sizeof(dType), &dType, NULL)
);
switch(dType) {
case CL_DEVICE_TYPE_GPU: dTypeStr="gpu"; break;
case CL_DEVICE_TYPE_CPU: dTypeStr="cpu"; break;
default: dTypeStr="(not supported)"; break;
}
std::cout << "\tDevice " << id << " type is " << dTypeStr << std::endl;
}
// Take the first one FIXME : do more !
device=devices[0];
std::cout << "\tWill use device 0 (" << device << ")" << std::endl;
delete [] devices;
delete [] platforms;
/*
if (!clGetGLContextInfoKHR)
{
clGetGLContextInfoKHR = (clGetGLContextInfoKHR_fn) clGetExtensionFunctionAddressForPlatform(platform, "clGetGLContextInfoKHR");
if (!clGetGLContextInfoKHR)
{
std::cout << "Failed to query proc address for clGetGLContextInfoKHR";
}
}
std::cout << "glXCreateContextAttribsARB "
<< (void*) glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB")
<< std::endl;
GLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = (GLXCREATECONTEXTATTRIBSARBPROC)
glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");
int attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
0
};
GLXContext ctx = glXCreateContextAttribsARB(displayName, *fbc, 0, true, attribs);
*/
/*
Ici, le contexte OpenGL du widget MyGTKGLSceneWidget est nécessaire.
http://developer.gnome.org/gtkglext/stable/gtkglext-gdkglcontext.html
glXMakeCurrent (displayName, win, ctx);
*/
GLXContext gGlCtx = glXGetCurrentContext();
std::cout << "gGlCtx == " << gGlCtx << std::endl;
cl_context_properties cpsGL[] = { CL_CONTEXT_PLATFORM, (cl_context_properties)platform,
CL_GLX_DISPLAY_KHR, (intptr_t) glXGetCurrentDisplay(),
CL_GL_CONTEXT_KHR, (intptr_t) gGlCtx, 0
};
std::cout << "OpenCL initialization done." << std::endl;
return 0;
}
#endif /*HAS_OPENCL*/
bool updateGLProjectionMatrix(Glib::RefPtr<Gdk::GL::Context> glCtx, Glib::RefPtr<Gdk::GL::Window> glWin, int width, int height) {
GLdouble aspect = (GLdouble) width/height;
// *** OpenGL BEGIN ***
if (!glWin->gl_begin(glCtx)) return false;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0, aspect, 0.1, 10.0);
glMatrixMode(GL_MODELVIEW);
glWin->gl_end();
// *** OpenGL END ***
return true;
}
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