cl_mem clCreateFromD3D10BufferKHR(cl_context context, cl_mem_flags flags, ID3D10Buffer *resource, cl_int *errcode_ret)
context - A valid OpenCL context created from a Direct3D 10 device.
flags - A bit-field that is used to specify usage information. May be
CL_MEM_READ_WRITE. (See the table for clCreateBuffer for more information.)
resource - A pointer to the Direct3D 10 buffer to share.
errcode_ret - An appropriate error code. If errcode_ret is NULL, no error code is returned.
The size of the returned OpenCL buffer object is the same as the size of resource. This call will increment the internal Direct3D reference count on resource. The internal Direct3D reference count on resource will be decremented when the OpenCL reference count on the returned OpenCL memory object drops to zero.
General information about sharing memory objects with Direct3D 10 follows.
The goal of this extension is to provide interoperability between OpenCL and
Direct3D 10. This is designed to function analogously to the
cl_khr_gl_sharing as defined in sections 9.7 and 9.8. If this
extension is supported by an implementation, the string
"cl_khr_d3d10_sharing" will be present in the
As currently proposed the interfaces for this extension would be provided in
The OpenCL functions enabled by the cl_khr_d3d10_sharing extension allow applications to use Direct3D 10 resources as OpenCL memory objects. This allows efficient sharing of data between OpenCL and Direct3D 10. The OpenCL API may be used to execute kernels that read and/or write memory objects that are also Direct3D 10 resources. An OpenCL image object may be created from a Direct3D 10 texture resource. An OpenCL buffer object may be created from a Direct3D 10 buffer resource. OpenCL memory objects may be created from Direct3D 10 objects if and only if the OpenCL context has been created from a Direct3D 10 device.
An OpenCL memory object created from a Direct3D 10 resource remains valid as long as the corresponding Direct3D 10 resource has not been deleted. If the Direct3D 10 resource is deleted through the Direct3D 10 API, subsequent use of the OpenCL memory object will result in undefined behavior, including but not limited to possible OpenCL errors, data corruption, and program termination.
The successful creation of a
cl_context against a Direct3D 10 device
specified via the context create parameter
will increment the internal Direct3D reference count on the specified
Direct3D 10 device. The internal Direct3D reference count on that Direct3D
10 device will be decremented when the OpenCL reference count on the
returned OpenCL context drops to zero.
The OpenCL context and corresponding command-queues are dependent on the existence of the Direct3D 10 device from which the OpenCL context was created. If the Direct3D 10 device is deleted through the Direct3D 10 API, subsequent use of the OpenCL context will result in undefined behavior, including but not limited to possible OpenCL errors, data corruption, and program termination.
Returns a valid non-zero OpenCL buffer object and errcode_ret is set to
CL_SUCCESS if the buffer object is created successfully.
Otherwise, it returns a NULL value with one of the following error values returned in errcode_ret:
CL_INVALID_CONTEXTif context is not a valid context.
CL_INVALID_VALUEif values specified in flags are not valid.
CL_INVALID_D3D10_RESOURCE_KHRif resource is not a Direct3D 10 buffer resource, if resource was created with the
D3D10_USAGE_IMMUTABLE, if a
cl_memfrom resource has already been created using
clCreateFromD3D10BufferKHR, or if context was not created against the same Direct3D 10 device from which resource was created.
CL_OUT_OF_HOST_MEMORYif there is a failure to allocate resources required by the OpenCL implementation on the host.
For more information, see the OpenCL Extension Specification at URL
Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.