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Fix Standard64KB 16-bit texture swizzle

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This commit is contained in:
nmzik
2026-07-18 03:43:25 +02:00
parent f4b52cea2b
commit aa99796d8a
2 changed files with 30 additions and 11 deletions
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src/graphics/guest_gpu/tile.cpp
+10 -11
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@@ -1089,12 +1089,11 @@ struct Standard64KB16Tables {
constexpr Standard64KB16Tables() {
for (uint32_t i = 0; i < 256; i++) {
uint32_t x_part = 0;
x_part ^= (i << 1u) & 0x0006u;
x_part ^= (i << 4u) & 0x0040u;
x_part ^= (i << 5u) & 0x0100u;
x_part ^= (i << 6u) & 0x0400u;
x_part ^= (i << 7u) & 0x1000u;
x_part ^= (i << 8u) & 0x4000u;
x_part ^= (i << 1u) & 0x000eu;
x_part ^= (i << 4u) & 0x0080u;
x_part ^= (i << 5u) & 0x0200u;
x_part ^= (i << 6u) & 0x0800u;
x_part ^= (i << 7u) & 0x2000u;
x_part ^= (i << 8u) & 0x8000u;
x_words[i] = x_part >> 1u;
@@ -1102,11 +1101,11 @@ struct Standard64KB16Tables {
for (uint32_t i = 0; i < 128; i++) {
uint32_t y_part = 0;
y_part ^= (i << 3u) & 0x0038u;
y_part ^= (i << 4u) & 0x0080u;
y_part ^= (i << 5u) & 0x0200u;
y_part ^= (i << 6u) & 0x0800u;
y_part ^= (i << 7u) & 0x2000u;
y_part ^= (i << 4u) & 0x0070u;
y_part ^= (i << 5u) & 0x0100u;
y_part ^= (i << 6u) & 0x0400u;
y_part ^= (i << 7u) & 0x1000u;
y_part ^= (i << 8u) & 0x4000u;
y_words[i] = y_part >> 1u;
}