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IndexGenerator: Add assertion for overflow in GetRemainingIndices 

This assertion is currently triggered by Pocoyo Racing (https://bugs.dolphin-emu.org/issues/13136).
This commit is contained in:
Pokechu22 2023-01-02 18:56:25 -08:00
parent d91f340c86
commit 6c58ba353c
1 changed files with 10 additions and 1 deletions
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11
Source/Core/VideoCommon/IndexGenerator.cpp
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@ -334,6 +334,15 @@ u32 IndexGenerator::GetRemainingIndices(OpcodeDecoder::Primitive primitive) cons
max_index >>= 2; max_index >>= 2;
// -1 is reserved for primitive restart // -1 is reserved for primitive restart
max_index = max_index - 1;
return max_index - m_base_index - 1; if (m_base_index > max_index) [[unlikely]]
{
PanicAlertFmt("GetRemainingIndices would overflow; we've already written too many indices? "
"base index {} > max index {}",
m_base_index, max_index);
return 0;
}
return max_index - m_base_index;
} }