v2:
- Report correct values for CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE
and CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE.
- Only define cl_khr_fp64 if the extension is supported.
- Remove trailing space from extension string.
- Rename device query function from cl_khr_fp86() to
has_doubles().
v3:
- Return 0 for device::doubled_fp_confg() when doubles aren't
supported.
v4:
- Remove device query for double fp_config.
---
src/gallium/state_trackers/clover/api/device.cpp | 21 ++++++++++++++++++---
src/gallium/state_trackers/clover/core/device.cpp | 6 ++++++
src/gallium/state_trackers/clover/core/device.hpp | 1 +
3 files changed, 25 insertions(+), 3 deletions(-)
diff --git a/src/gallium/state_trackers/clover/api/device.cpp
b/src/gallium/state_trackers/clover/api/device.cpp
index e825468..b1f556f 100644
--- a/src/gallium/state_trackers/clover/api/device.cpp
+++ b/src/gallium/state_trackers/clover/api/device.cpp
@@ -145,7 +145,7 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
break;
case CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE:
- buf.as_scalar<cl_uint>() = 2;
+ buf.as_scalar<cl_uint>() = dev.has_doubles() ? 2 : 0;
break;
case CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF:
@@ -205,6 +205,21 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
CL_FP_DENORM | CL_FP_INF_NAN | CL_FP_ROUND_TO_NEAREST;
break;
+ case CL_DEVICE_DOUBLE_FP_CONFIG:
+ if (dev.has_doubles())
+ // This is the "mandated minimum double precision floating-point
+ // capability"
+ buf.as_scalar<cl_device_fp_config>() =
+ CL_FP_FMA
+ | CL_FP_ROUND_TO_NEAREST
+ | CL_FP_ROUND_TO_ZERO
+ | CL_FP_ROUND_TO_INF
+ | CL_FP_INF_NAN
+ | CL_FP_DENORM;
+ else
+ buf.as_scalar<cl_device_fp_config>() = 0;
+ break;
+
case CL_DEVICE_GLOBAL_MEM_CACHE_TYPE:
buf.as_scalar<cl_device_mem_cache_type>() = CL_NONE;
break;
@@ -283,7 +298,7 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
break;
case CL_DEVICE_EXTENSIONS:
- buf.as_string() = "";
+ buf.as_string() = dev.has_doubles() ? "cl_khr_fp64" : "";
break;
case CL_DEVICE_PLATFORM:
@@ -315,7 +330,7 @@ clGetDeviceInfo(cl_device_id d_dev, cl_device_info param,
break;
case CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE:
- buf.as_scalar<cl_uint>() = 2;
+ buf.as_scalar<cl_uint>() = dev.has_doubles() ? 2 : 0;
break;
case CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF:
diff --git a/src/gallium/state_trackers/clover/core/device.cpp
b/src/gallium/state_trackers/clover/core/device.cpp
index 688a7dd..c3f3b4e 100644
--- a/src/gallium/state_trackers/clover/core/device.cpp
+++ b/src/gallium/state_trackers/clover/core/device.cpp
@@ -173,6 +173,12 @@ device::image_support() const {
PIPE_COMPUTE_CAP_IMAGES_SUPPORTED)[0];
}
+bool
+device::has_doubles() const {
+ return pipe->get_shader_param(pipe, PIPE_SHADER_COMPUTE,
+ PIPE_SHADER_CAP_DOUBLES);
+}
+
std::vector<size_t>
device::max_block_size() const {
auto v = get_compute_param<uint64_t>(pipe, PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE);
diff --git a/src/gallium/state_trackers/clover/core/device.hpp
b/src/gallium/state_trackers/clover/core/device.hpp
index 2201700..de5fc6b 100644
--- a/src/gallium/state_trackers/clover/core/device.hpp
+++ b/src/gallium/state_trackers/clover/core/device.hpp
@@ -64,6 +64,7 @@ namespace clover {
cl_uint max_clock_frequency() const;
cl_uint max_compute_units() const;
bool image_support() const;
+ bool has_doubles() const;
std::vector<size_t> max_block_size() const;
std::string device_name() const;
--
2.0.4
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