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fix mapImage for 1D_ARRAY

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There are differences in qPitch programming between Gen8 vs Gen9+
devices and this requires special operation when image is zero-copy.

For Gen8 qPitch is distance in rows while Gen9+ it is in pixels.
Minimum value of qPitch is 4 and this causes slicePitch = 4*rowPitch on
Gen8.

To allow zero-copy we have to tell what is correct value rowPitch which
should equal to slicePitch.

Change-Id: I58dea004e3c7f9f4dfabd154d02749c15b6b0246
Signed-off-by: Artur Harasimiuk <artur.harasimiuk@intel.com>
This commit is contained in:
Artur Harasimiuk
2018-04-11 17:40:42 +02:00
committed by sys_ocldev
parent 87f0dcda36
commit cb064abb04
2 changed files with 68 additions and 1 deletions
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10
runtime/command_queue/command_queue.cpp
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@@ -547,7 +547,15 @@ void *CommandQueue::enqueueMapImage(Image *image, cl_bool blockingMap,
if (image->isMemObjZeroCopy() && image->mappingOnCpuAllowed()) {
GetInfoHelper::set(imageSlicePitch, image->getImageDesc().image_slice_pitch);
GetInfoHelper::set(imageRowPitch, image->getImageDesc().image_row_pitch);
if (image->getImageDesc().image_type == CL_MEM_OBJECT_IMAGE1D_ARRAY) {
// There are differences in qPitch programming between Gen8 vs Gen9+ devices.
// For Gen8 qPitch is distance in rows while Gen9+ it is in pixels.
// Minimum value of qPitch is 4 and this causes slicePitch = 4*rowPitch on Gen8.
// To allow zero-copy we have to tell what is correct value rowPitch which should equal to slicePitch.
GetInfoHelper::set(imageRowPitch, image->getImageDesc().image_slice_pitch);
} else {
GetInfoHelper::set(imageRowPitch, image->getImageDesc().image_row_pitch);
}
} else {
GetInfoHelper::set(imageSlicePitch, image->getHostPtrSlicePitch());
GetInfoHelper::set(imageRowPitch, image->getHostPtrRowPitch());