UTF-8 Text Not Displaying Correctly #2
Description
Description: UTF-8 encoded text (especially Cyrillic and other non-ASCII characters) displays as garbled characters or artifacts when using the Cmd_Text() function.
Environment:
- Platform: Ubuntu 24.04
Expected Behavior: UTF-8 text should display correctly, including Cyrillic characters like "Привет" or other Unicode symbols.
Actual Behavior: Non-ASCII UTF-8 characters appear as garbled text or empty boxes.
Root Cause: The issue occurs due to sign extension when casting char to uint32_t. UTF-8 bytes with values > 127 (0x7F) have the high bit set, causing:
- Byte 0xD0 (208) becomes 0xFFFFFFD0 instead of 0x000000D0
- This corrupts the UTF-8 byte sequences sent to the EVE chip