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Off-by-one in sse2 scaling

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This commit is contained in:
Lauri Kasanen
2021-10-05 13:00:58 +03:00
parent b43575ebcb
commit 9f5d1d28e2
1 changed files with 2 additions and 2 deletions
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4
common/rfb/scale_sse2.cxx
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@@ -69,7 +69,7 @@ void SSE2_halve(const uint8_t *oldpx,
uint8_t * const dst = newpx + newstride * (y / 2) * 4; uint8_t * const dst = newpx + newstride * (y / 2) * 4;
for (x = 0; x < srcw; x += 4) { for (x = 0; x < srcw - 3; x += 4) {
__m128i lo, hi, a, b, c, d; __m128i lo, hi, a, b, c, d;
lo = _mm_loadu_si128((__m128i *) &row0[x * 4]); lo = _mm_loadu_si128((__m128i *) &row0[x * 4]);
hi = _mm_loadu_si128((__m128i *) &row1[x * 4]); hi = _mm_loadu_si128((__m128i *) &row1[x * 4]);
@@ -141,7 +141,7 @@ void SSE2_scale(const uint8_t *oldpx,
const __m128i vertmul = _mm_set1_epi16(top); const __m128i vertmul = _mm_set1_epi16(top);
const __m128i vertmul2 = _mm_set1_epi16(bot); const __m128i vertmul2 = _mm_set1_epi16(bot);
for (x = 0; x < tgtw; x += 2) { for (x = 0; x < tgtw - 1; x += 2) {
const float nx[2] = { const float nx[2] = {
x * invdiff, x * invdiff,
(x + 1) * invdiff, (x + 1) * invdiff,