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gb: Use only 4-LSB in LCD data #55

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deltabeard opened this issue Jul 24, 2022 · 0 comments
Open

gb: Use only 4-LSB in LCD data #55

deltabeard opened this issue Jul 24, 2022 · 0 comments
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diff: intermediate Medium difficulty enhancement New feature or request feat: medium Rationale is clear and reasonable. Performance Issues or bugs related to performance improvements & regressions.
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v2

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@deltabeard
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The LCD pixel data that Peanut-GB produces uses bits 0 and 1 for shade data, and bits 4 and 5 for layer data. If only bits 0-3 are used, then colour mapping using a look up table can be faster. A basic test on the RP2040 showed an improvement of approximately 8 FPS with this change.

This will require an API change.
@deltabeard deltabeard added enhancement New feature or request diff: intermediate Medium difficulty feat: medium Rationale is clear and reasonable. Performance Issues or bugs related to performance improvements & regressions. labels Jul 24, 2022
@deltabeard deltabeard added this to the v2 milestone Jul 24, 2022
@deltabeard deltabeard mentioned this issue May 26, 2023
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diff: intermediate Medium difficulty enhancement New feature or request feat: medium Rationale is clear and reasonable. Performance Issues or bugs related to performance improvements & regressions.
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v2
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