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clover: Query and export half precision support 

v2: PIPE_CAP_HALFS -> PIPE_SHADER_CAP_FP16
    has_halfs -> has_halves

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Jan Vesely 2017-09-01 17:48:39 -04:00
parent 7b2c5547c3
commit fdf0f1db22
3 changed files with 18 additions and 3 deletions
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14
src/gallium/state_trackers/clover/api/device.cpp
View File

@ -150,7 +150,7 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
break;
case CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF:
buf.as_scalar<cl_uint>() = 0;
buf.as_scalar<cl_uint>() = dev.has_halves() ? 8 : 0;
break;
case CL_DEVICE_MAX_CLOCK_FREQUENCY:
@ -213,6 +213,13 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
buf.as_scalar<cl_uint>() = 128;
break;
case CL_DEVICE_HALF_FP_CONFIG:
// This is the "mandated minimum half precision floating-point
// capability" for OpenCL 1.x.
buf.as_scalar<cl_device_fp_config>() =
CL_FP_INF_NAN | CL_FP_ROUND_TO_NEAREST;
break;
case CL_DEVICE_SINGLE_FP_CONFIG:
// This is the "mandated minimum single precision floating-point
// capability" for OpenCL 1.1. In OpenCL 1.2, nothing is required for
@ -329,7 +336,8 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
" cl_khr_local_int32_base_atomics"
" cl_khr_local_int32_extended_atomics"
" cl_khr_byte_addressable_store"
+ std::string(dev.has_doubles() ? " cl_khr_fp64" : "");
+ std::string(dev.has_doubles() ? " cl_khr_fp64" : "")
+ std::string(dev.has_halves() ? " cl_khr_fp16" : "");
break;
case CL_DEVICE_PLATFORM:
@ -365,7 +373,7 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
break;
case CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF:
buf.as_scalar<cl_uint>() = 0;
buf.as_scalar<cl_uint>() = dev.has_halves() ? 8 : 0;
break;
case CL_DEVICE_OPENCL_C_VERSION:

6
src/gallium/state_trackers/clover/core/device.cpp
View File

@ -190,6 +190,12 @@ device::has_doubles() const {
return pipe->get_param(pipe, PIPE_CAP_DOUBLES);
}
bool
device::has_halves() const {
return pipe->get_shader_param(pipe, PIPE_SHADER_COMPUTE,
PIPE_SHADER_CAP_FP16);
}
bool
device::has_unified_memory() const {
return pipe->get_param(pipe, PIPE_CAP_UMA);

1
src/gallium/state_trackers/clover/core/device.hpp
View File

@ -67,6 +67,7 @@ namespace clover {
cl_uint max_compute_units() const;
bool image_support() const;
bool has_doubles() const;
bool has_halves() const;
bool has_unified_memory() const;
cl_uint mem_base_addr_align() const;