Video core: Fix A4 texture decoding
It was trying to take the LSB from `coarse_x`, which would always be 0 and thus would always return the same texel from each byte. To add insult to the injury, the conditional was actually the wrong way around too. Fixes blocky text in OoT.
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@ -436,9 +436,9 @@ const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const Texture
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case Regs::TextureFormat::A4:
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{
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const u8* source_ptr = source + offset / 2 + i / 2;
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const u8* source_ptr = source + (offset + i) / 2;
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u8 a = (coarse_x % 2) ? ((*source_ptr)&0xF) : (((*source_ptr) & 0xF0) >> 4);
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u8 a = (i % 2) ? ((*source_ptr & 0xF0) >> 4) : (*source_ptr & 0xF);
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a = Color::Convert4To8(a);
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if (disable_alpha) {
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