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vulkan_ffv1: fix left-2 sample addressing

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Typo.
Not enough to fix context=1, but its a start.
This commit is contained in:
Lynne
2025-04-06 00:47:29 +00:00
parent 694ebe890c
commit 72953477a4
1 changed files with 8 additions and 6 deletions
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14
libavcodec/vulkan/ffv1_dec.comp
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@ -44,15 +44,17 @@ ivec2 get_pred(ivec2 pos, ivec2 off, int p, int sw, uint8_t quant_table_idx)
if ((quant_table[quant_table_idx][3][127] != 0) || if ((quant_table[quant_table_idx][3][127] != 0) ||
(quant_table[quant_table_idx][4][127] != 0)) { (quant_table[quant_table_idx][4][127] != 0)) {
TYPE cur2 = TYPE(0);
if (off.x > 0 && off != ivec2(1, 0)) { if (off.x > 0 && off != ivec2(1, 0)) {
const ivec2 yoff_border2 = off.x == 1 ? ivec2(1, -1) : ivec2(0, 0); const ivec2 yoff_border2 = off.x == 1 ? ivec2(1, -1) : ivec2(0, 0);
TYPE cur2 = TYPE(imageLoad(dst[p], pos + ivec2(-2, 0) + yoff_border2)[0]); cur2 = TYPE(imageLoad(dst[p], pos + ivec2(-2, 0) + yoff_border2)[0]);
base += quant_table[quant_table_idx][3][(cur2 - cur) & MAX_QUANT_TABLE_MASK];
}
if (off.y > 1) {
TYPE top2 = TYPE(imageLoad(dst[p], pos + ivec2(0, -2))[0]);
base += quant_table[quant_table_idx][4][(top2 - top[1]) & MAX_QUANT_TABLE_MASK];
} }
base += quant_table[quant_table_idx][3][(cur2 - cur) & MAX_QUANT_TABLE_MASK];
TYPE top2 = TYPE(0);
if (off.y > 1)
top2 = TYPE(imageLoad(dst[p], pos + ivec2(0, -2))[0]);
base += quant_table[quant_table_idx][4][(top2 - top[1]) & MAX_QUANT_TABLE_MASK];
} }
/* context, prediction */ /* context, prediction */