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vulkan: support noncontig i32 copy #17328

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Merged
merged 1 commit into from
Nov 18, 2025
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vulkan: support noncontig i32 copy #17328

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5 changes: 3 additions & 2 deletions ggml/src/ggml-vulkan/ggml-vulkan.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -13644,10 +13644,11 @@ static bool ggml_backend_vk_device_supports_op(ggml_backend_dev_t dev, const ggm
}

// We can handle copying from a type to the same type if it's
// contiguous (memcpy). We use f16 or f32 shaders to do the copy,
// either not quantized or is quantized and contiguous.
// We use f16 or f32 shaders to do the copy,
// so the type/block size must be a multiple of 4.
if (src0_type == src1_type &&
ggml_is_contiguous(op->src[0]) && ggml_is_contiguous(op) &&
(!ggml_is_quantized(src0_type) || (ggml_is_contiguous(op->src[0]) && ggml_is_contiguous(op))) &&
(ggml_type_size(src0_type) % 2) == 0) {
return true;
}
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