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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef WITH_OPENCL
#include "device/opencl/opencl.h"
#include "device/device_intern.h"
#include "util/util_foreach.h"
#include "util/util_logging.h"
CCL_NAMESPACE_BEGIN
Device *device_opencl_create(DeviceInfo& info, Stats &stats, bool background)
{
vector<OpenCLPlatformDevice> usable_devices;
OpenCLInfo::get_usable_devices(&usable_devices);
assert(info.num < usable_devices.size());
const OpenCLPlatformDevice& platform_device = usable_devices[info.num];
const string& platform_name = platform_device.platform_name;
const cl_device_type device_type = platform_device.device_type;
if(OpenCLInfo::kernel_use_split(platform_name, device_type)) {
VLOG(1) << "Using split kernel.";
return opencl_create_split_device(info, stats, background);
} else {
VLOG(1) << "Using mega kernel.";
return opencl_create_mega_device(info, stats, background);
}
}
bool device_opencl_init(void)
{
static bool initialized = false;
static bool result = false;
if(initialized)
return result;
initialized = true;
if(OpenCLInfo::device_type() != 0) {
int clew_result = clewInit();
if(clew_result == CLEW_SUCCESS) {
VLOG(1) << "CLEW initialization succeeded.";
result = true;
}
else {
VLOG(1) << "CLEW initialization failed: "
<< ((clew_result == CLEW_ERROR_ATEXIT_FAILED)
? "Error setting up atexit() handler"
: "Error opening the library");
}
}
else {
VLOG(1) << "Skip initializing CLEW, platform is force disabled.";
result = false;
}
return result;
}
static cl_int device_opencl_get_num_platforms_safe(cl_uint *num_platforms)
{
#ifdef _WIN32
__try {
return clGetPlatformIDs(0, NULL, num_platforms);
}
__except(EXCEPTION_EXECUTE_HANDLER) {
/* Ignore crashes inside the OpenCL driver and hope we can
* survive even with corrupted OpenCL installs. */
fprintf(stderr, "Cycles OpenCL: driver crashed, continuing without OpenCL.\n");
}
*num_platforms = 0;
return CL_DEVICE_NOT_FOUND;
#else
return clGetPlatformIDs(0, NULL, num_platforms);
#endif
}
void device_opencl_info(vector<DeviceInfo>& devices)
{
cl_uint num_platforms = 0;
device_opencl_get_num_platforms_safe(&num_platforms);
if(num_platforms == 0) {
return;
}
vector<OpenCLPlatformDevice> usable_devices;
OpenCLInfo::get_usable_devices(&usable_devices);
/* Devices are numbered consecutively across platforms. */
int num_devices = 0;
foreach(OpenCLPlatformDevice& platform_device, usable_devices) {
const string& platform_name = platform_device.platform_name;
const cl_device_type device_type = platform_device.device_type;
const string& device_name = platform_device.device_name;
string hardware_id = platform_device.hardware_id;
if(hardware_id == "") {
hardware_id = string_printf("ID_%d", num_devices);
}
DeviceInfo info;
info.type = DEVICE_OPENCL;
info.description = string_remove_trademark(string(device_name));
info.num = num_devices;
/* We don't know if it's used for display, but assume it is. */
info.display_device = true;
info.advanced_shading = OpenCLInfo::kernel_use_advanced_shading(platform_name);
info.use_split_kernel = OpenCLInfo::kernel_use_split(platform_name,
device_type);
info.id = string("OPENCL_") + platform_name + "_" + device_name + "_" + hardware_id;
devices.push_back(info);
num_devices++;
}
}
string device_opencl_capabilities(void)
{
if(OpenCLInfo::device_type() == 0) {
return "All OpenCL devices are forced to be OFF";
}
string result = "";
string error_msg = ""; /* Only used by opencl_assert(), but in the future
* it could also be nicely reported to the console.
*/
cl_uint num_platforms = 0;
opencl_assert(device_opencl_get_num_platforms_safe(&num_platforms));
if(num_platforms == 0) {
return "No OpenCL platforms found\n";
}
result += string_printf("Number of platforms: %u\n", num_platforms);
vector<cl_platform_id> platform_ids;
platform_ids.resize(num_platforms);
opencl_assert(clGetPlatformIDs(num_platforms, &platform_ids[0], NULL));
#define APPEND_STRING_INFO(func, id, name, what) \
do { \
char data[1024] = "\0"; \
opencl_assert(func(id, what, sizeof(data), &data, NULL)); \
result += string_printf("%s: %s\n", name, data); \
} while(false)
#define APPEND_STRING_EXTENSION_INFO(func, id, name, what) \
do { \
char data[1024] = "\0"; \
size_t length = 0; \
if(func(id, what, sizeof(data), &data, &length) == CL_SUCCESS) { \
if(length != 0 && data[0] != '\0') { \
result += string_printf("%s: %s\n", name, data); \
} \
} \
} while(false)
#define APPEND_PLATFORM_STRING_INFO(id, name, what) \
APPEND_STRING_INFO(clGetPlatformInfo, id, "\tPlatform " name, what)
#define APPEND_DEVICE_STRING_INFO(id, name, what) \
APPEND_STRING_INFO(clGetDeviceInfo, id, "\t\t\tDevice " name, what)
#define APPEND_DEVICE_STRING_EXTENSION_INFO(id, name, what) \
APPEND_STRING_EXTENSION_INFO(clGetDeviceInfo, id, "\t\t\tDevice " name, what)
vector<cl_device_id> device_ids;
for(cl_uint platform = 0; platform < num_platforms; ++platform) {
cl_platform_id platform_id = platform_ids[platform];
result += string_printf("Platform #%u\n", platform);
APPEND_PLATFORM_STRING_INFO(platform_id, "Name", CL_PLATFORM_NAME);
APPEND_PLATFORM_STRING_INFO(platform_id, "Vendor", CL_PLATFORM_VENDOR);
APPEND_PLATFORM_STRING_INFO(platform_id, "Version", CL_PLATFORM_VERSION);
APPEND_PLATFORM_STRING_INFO(platform_id, "Profile", CL_PLATFORM_PROFILE);
APPEND_PLATFORM_STRING_INFO(platform_id, "Extensions", CL_PLATFORM_EXTENSIONS);
cl_uint num_devices = 0;
opencl_assert(clGetDeviceIDs(platform_ids[platform],
CL_DEVICE_TYPE_ALL,
0,
NULL,
&num_devices));
result += string_printf("\tNumber of devices: %u\n", num_devices);
device_ids.resize(num_devices);
opencl_assert(clGetDeviceIDs(platform_ids[platform],
CL_DEVICE_TYPE_ALL,
num_devices,
&device_ids[0],
NULL));
for(cl_uint device = 0; device < num_devices; ++device) {
cl_device_id device_id = device_ids[device];
result += string_printf("\t\tDevice: #%u\n", device);
APPEND_DEVICE_STRING_INFO(device_id, "Name", CL_DEVICE_NAME);
APPEND_DEVICE_STRING_EXTENSION_INFO(device_id, "Board Name", CL_DEVICE_BOARD_NAME_AMD);
APPEND_DEVICE_STRING_INFO(device_id, "Vendor", CL_DEVICE_VENDOR);
APPEND_DEVICE_STRING_INFO(device_id, "OpenCL C Version", CL_DEVICE_OPENCL_C_VERSION);
APPEND_DEVICE_STRING_INFO(device_id, "Profile", CL_DEVICE_PROFILE);
APPEND_DEVICE_STRING_INFO(device_id, "Version", CL_DEVICE_VERSION);
APPEND_DEVICE_STRING_INFO(device_id, "Extensions", CL_DEVICE_EXTENSIONS);
}
}
#undef APPEND_STRING_INFO
#undef APPEND_PLATFORM_STRING_INFO
#undef APPEND_DEVICE_STRING_INFO
return result;
}
CCL_NAMESPACE_END
#endif /* WITH_OPENCL */
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