Instead of hardcoding a fixed version for all devices, compute the
highest version supported by a device based on the different constraints
mandated by each new version.
For example, besides new functionalities, OpenCL 1.1 also increases the
minimum limits regarding the amount of local memory and the amount of
bytes taken by all arguments to a kernel. Some hardware (such as all
GPUs from NVIDIA’s Tesla micro-architecture) can support the additional
features but do not pass those new minimums.
v3:
* Change `get_highest_supported_version()` to return the version instead
of modifying the version components passed as arguments. (Francisco
Jerez)
* Tweak the line wrapping for `has_extension()`. (Francisco Jerez)
v2:
* Invert the ordering of OpenCL and OpenCL C version, to restrict OpenCL
version based on supported OpenCL C version.
* Rename `get_supported_version()` to `get_highest_supported_version()`;
* Use device methods to query parameters instead of manually executing
them;
* Clarify that the limit checking is only for non-custom devices
supporting the full profile.
* Check for mandatory extensions as well;
* Validate CL_DEVICE_MEM_BASE_ADDR_ALIGN;
* Fix the OpenCL>=1.1 minimum limit for CL_DEVICE_LOCAL_MEM_SIZE, from
32 * 1000 to 32 * 1024;
* Restrict to OpenCL 1.0 if OpenCL C 1.1 is not supported.
* Compute the highest supported version based on constraints (ignoring
2.x versions).
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Pierre Moreau <dev@pmoreau.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10256>
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