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Fixed detection of DXT1a data in DDS

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korenkonder
2024-08-03 12:17:23 +03:00
parent be3733f2ad
commit 7c9ead1050
1 changed files with 6 additions and 2 deletions
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src/KKdLib/dds.cpp
+6 -2
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@@ -462,8 +462,12 @@ static void dds_reverse_rgb(txp_format format, size_t size, uint8_t* data) {
static bool dds_check_is_dxt1a(int64_t size, uint8_t* data) {
while (size > 0) {
if (*(uint16_t*)data <= *(uint16_t*)(data + 2))
return true;
if (*(uint16_t*)data <= *(uint16_t*)(data + 2)) {
uint32_t indices = *(uint32_t*)(data + 4);
// Check if 2 bit indices have at least one that equals to 3
if ((indices & ((indices & 0x55555555) << 1)))
return true;
}
data += 8;
size -= 8;
}