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Autorefresh after image pages to get rid of ghosting artifacts (#116)

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jpirnay
2026-04-24 10:30:07 +02:00
parent 5d0620bc3a
commit 1bf0278eec
5 changed files with 19 additions and 0 deletions
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src/activities/reader/EpubReaderActivity.cpp
+12
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@@ -1145,6 +1145,8 @@ void EpubReaderActivity::renderContents(std::unique_ptr<Page> page, const int or
// Force special handling for pages with images when anti-aliasing is on
bool imagePageWithAA = page->hasImages() && SETTINGS.textAntiAliasing;
bool forceHalfRefreshThisPage = pendingHalfRefreshAfterImagePage && SETTINGS.halfRefreshAfterImagePage;
pendingHalfRefreshAfterImagePage = false;
logReaderMemSnapshot("before_bw_render");
page->render(renderer, SETTINGS.getReaderFontId(), orientedMarginLeft, orientedMarginTop);
@@ -1172,6 +1174,12 @@ void EpubReaderActivity::renderContents(std::unique_ptr<Page> page, const int or
renderer.displayBuffer(HalDisplay::HALF_REFRESH);
}
// Double FAST_REFRESH handles ghosting for image pages; don't count toward full refresh cadence
if (forceHalfRefreshThisPage) {
pagesUntilFullRefresh = SETTINGS.getRefreshFrequency();
}
} else if (forceHalfRefreshThisPage) {
renderer.displayBuffer(HalDisplay::HALF_REFRESH);
pagesUntilFullRefresh = SETTINGS.getRefreshFrequency();
} else {
ReaderUtils::displayWithRefreshCycle(renderer, pagesUntilFullRefresh);
}
@@ -1183,6 +1191,10 @@ void EpubReaderActivity::renderContents(std::unique_ptr<Page> page, const int or
const auto tBwStore = millis();
logReaderMemSnapshot("bw_store_end");
if (page->hasImages() && SETTINGS.imageRendering != CrossPointSettings::IMAGES_SUPPRESS) {
pendingHalfRefreshAfterImagePage = true;
}
// grayscale rendering
// TODO: Only do this if font supports it
if (SETTINGS.textAntiAliasing) {