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ggml : fix interpolate with align-corners and ne=1 (llama/16700)

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* ggml : fix interpolate with align-corners and ne=1

* avoid division by zero if one of the spatial dimensions is 1
* cpu, cuda, opencl returned correct result anyway due to clamp
* vulkan didn't clamp for align-corners so results were broken

* fix clang warning
This commit is contained in:
Acly
2025-11-09 23:38:03 +02:00
committed by Georgi Gerganov
parent 1471b1fda7
commit bcda7c3e58
5 changed files with 27 additions and 36 deletions
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ggml/src/ggml-cpu/ops.cpp
+2 -2
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@@ -7519,8 +7519,8 @@ static void ggml_compute_forward_upscale_f32(
float pixel_offset = 0.5f;
if (mode_flags & GGML_SCALE_FLAG_ALIGN_CORNERS) {
pixel_offset = 0.0f;
sf0 = (float)(ne0 - 1) / (src0->ne[0] - 1);
sf1 = (float)(ne1 - 1) / (src0->ne[1] - 1);
sf0 = ne0 > 1 && ne00 > 1 ? (float)(ne0 - 1) / (ne00 - 1) : sf0;
sf1 = ne1 > 1 && ne01 > 1 ? (float)(ne1 - 1) / (ne01 - 1) : sf1;
}
for (int64_t i3 = 0; i3 < ne3; i3++) {