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Merge pull request #7413 from radarhere/bc5s

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Hugo van Kemenade 2023-10-05 09:48:12 -06:00 committed by GitHub
commit 09605ff48e
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2 changed files with 9 additions and 3 deletions
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12
src/libImaging/BcnDecode.c
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@ -850,10 +850,12 @@ decode_bcn(
DECODE_LOOP(3, 16, rgba);
DECODE_LOOP(4, 8, lum);
case 5:
{
int sign = strcmp(pixel_format, "BC5S") == 0 ? 1 : 0;
while (bytes >= 16) {
rgba col[16];
memset(col, 0, 16 * sizeof(col[0]));
decode_bc5_block(col, ptr, strcmp(pixel_format, "BC5S") == 0 ? 1 : 0);
memset(col, sign ? 128 : 0, 16 * sizeof(col[0]));
decode_bc5_block(col, ptr, sign);
put_block(im, state, (const char *)col, sizeof(col[0]), C);
ptr += 16;
bytes -= 16;
@ -862,10 +864,13 @@ decode_bcn(
}
}
break;
}
case 6:
{
int sign = strcmp(pixel_format, "BC6HS") == 0 ? 1 : 0;
while (bytes >= 16) {
rgba col[16];
decode_bc6_block(col, ptr, strcmp(pixel_format, "BC6HS") == 0 ? 1 : 0);
decode_bc6_block(col, ptr, sign);
put_block(im, state, (const char *)col, sizeof(col[0]), C);
ptr += 16;
bytes -= 16;
@ -874,6 +879,7 @@ decode_bcn(
}
}
break;
}
DECODE_LOOP(7, 16, rgba);
#undef DECODE_LOOP
}