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Copyright 2013 Pixar
Licensed under the Apache License, Version 2.0 (the "Apache License")
with the following modification; you may not use this file except in
compliance with the Apache License and the following modification to it:
Section 6. Trademarks. is deleted and replaced with:
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor
and its affiliates, except as required to comply with Section 4(c) of
the License and to reproduce the content of the NOTICE file.
You may obtain a copy of the Apache License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the Apache License with the above modification is
distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the Apache License for the specific
language governing permissions and limitations under the Apache License.
116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#ifndef OSD_EXAMPLE_CL_INIT_H
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#define OSD_EXAMPLE_CL_INIT_H
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#if defined(_WIN32)
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#include <windows.h>
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#include <CL/opencl.h>
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#elif defined(__APPLE__)
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#include <OpenGL/OpenGL.h>
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#include <OpenCL/opencl.h>
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#else
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#include <GL/glx.h>
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#include <CL/opencl.h>
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#endif
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#include <cstdio>
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static bool initCL(cl_context *clContext, cl_command_queue *clQueue)
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{
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cl_int ciErrNum;
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cl_platform_id cpPlatform = 0;
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cl_uint num_platforms;
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ciErrNum = clGetPlatformIDs(0, NULL, &num_platforms);
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if (ciErrNum != CL_SUCCESS) {
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printf("Error %d in clGetPlatformIDs call.\n", ciErrNum);
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return false;
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}
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if (num_platforms == 0) {
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printf("No OpenCL platform found.\n");
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return false;
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}
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cl_platform_id *clPlatformIDs;
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clPlatformIDs = new cl_platform_id[num_platforms];
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ciErrNum = clGetPlatformIDs(num_platforms, clPlatformIDs, NULL);
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char chBuffer[1024];
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for (cl_uint i = 0; i < num_platforms; ++i) {
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ciErrNum = clGetPlatformInfo(clPlatformIDs[i], CL_PLATFORM_NAME, 1024, chBuffer,NULL);
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if (ciErrNum == CL_SUCCESS) {
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cpPlatform = clPlatformIDs[i];
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}
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}
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// -------------
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cl_device_id clDevice;
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clGetDeviceIDs(cpPlatform, CL_DEVICE_TYPE_GPU, 1, &clDevice, NULL);
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#if defined(_WIN32)
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cl_context_properties props[] = {
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CL_GL_CONTEXT_KHR, (cl_context_properties)wglGetCurrentContext(),
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CL_WGL_HDC_KHR, (cl_context_properties)wglGetCurrentDC(),
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CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform,
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0
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};
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#elif defined(__APPLE__)
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CGLContextObj kCGLContext = CGLGetCurrentContext();
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CGLShareGroupObj kCGLShareGroup = CGLGetShareGroup(kCGLContext);
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cl_context_properties props[] = {
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CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE, (cl_context_properties)kCGLShareGroup,
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0
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};
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#else
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cl_context_properties props[] = {
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CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
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CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
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CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform,
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0
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};
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#endif
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delete[] clPlatformIDs;
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// XXX context creation should be moved to client code
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*clContext = clCreateContext(props, 1, &clDevice, NULL, NULL, &ciErrNum);
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if (ciErrNum != CL_SUCCESS) {
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printf("Error %d in clCreateContext\n", ciErrNum);
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return false;
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}
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*clQueue = clCreateCommandQueue(*clContext, clDevice, 0, &ciErrNum);
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if (ciErrNum != CL_SUCCESS) {
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printf("Error %d in clCreateCommandQueue\n", ciErrNum);
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return false;
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}
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return true;
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}
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static void uninitCL(cl_context clContext, cl_command_queue clQueue)
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{
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clReleaseCommandQueue(clQueue);
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clReleaseContext(clContext);
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}
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#endif // OSD_EXAMPLE_CL_INIT_H
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