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rusticl/image: take pitches into account when allocating memory for maps

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This is more correct than the previous code and the CL CTS relies on edge
case behavior here, e.g. for 1Dbuffer images.

I think part of that is not actually required by the spec, but whatever.

Fixes: 7b22bc617b ("rusticl/memory: complete rework on how mapping is implemented")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30528>
This commit is contained in:
Karol Herbst 2024-08-06 09:22:11 +02:00 • committed by Marge Bot
parent 1fa288b224
commit 2484331e82
1 changed files with 27 additions and 2 deletions
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29
src/gallium/frontends/rusticl/core/memory.rs
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@ -1359,8 +1359,33 @@ impl Image {
*row_pitch = self.image_desc.row_pitch()? as usize;
*slice_pitch = self.image_desc.slice_pitch();
let (offset, size) =
CLVec::calc_offset_size(origin, region, [pixel_size, *row_pitch, *slice_pitch]);
let offset = CLVec::calc_offset(origin, [pixel_size, *row_pitch, *slice_pitch]);
// From the CL Spec:
//
// The pointer returned maps a 1D, 2D or 3D region starting at origin and is at least
// region[0] pixels in size for a 1D image, 1D image buffer or 1D image array,
// (image_row_pitch × region[1]) pixels in size for a 2D image or 2D image array, and
// (image_slice_pitch × region[2]) pixels in size for a 3D image. The result of a memory
// access outside this region is undefined.
//
// It's not guaranteed that the row_pitch is taken into account for 1D images, but the CL
// CTS relies on this behavior.
//
// Also note, that the spec wording is wrong in regards to arrays, which need to take the
// image_slice_pitch into account.
let size = if self.image_desc.is_array() || self.image_desc.dims() == 3 {
debug_assert_ne!(*slice_pitch, 0);
// the slice count is in region[1] for 1D array images
if self.mem_type == CL_MEM_OBJECT_IMAGE1D_ARRAY {
region[1] * *slice_pitch
} else {
region[2] * *slice_pitch
}
} else {
debug_assert_ne!(*row_pitch, 0);
region[1] * *row_pitch
};
let layout;
unsafe {