eric/Crosspoint
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add async display refresh to overlap CPU work

Browse Source 
Introduces non-blocking display refresh methods that allow CPU work (like grayscale rendering) to overlap with the e-ink panel's refresh time. The async path starts the waveform and returns immediately, with the caller responsible for waiting via waitRefreshComplete(). Falls back to blocking refresh when fadingFix is enabled or the panel lacks deferral support.
This commit is contained in:
Justin Mitchell
2026-07-14 04:42:27 -04:00
parent 34e7ed249b
commit 17e4230068
6 changed files with 166 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/GfxRenderer/GfxRenderer.cpp
+14
View File
@@ -1451,6 +1451,20 @@ void GfxRenderer::displayBuffer(const HalDisplay::RefreshMode refreshMode) const
display.displayBuffer(refreshMode, fadingFix);
}
void GfxRenderer::displayBufferAsync(const HalDisplay::RefreshMode refreshMode) const {
// The async path has no turn-off-screen hook, which the sunlight fading fix
// relies on; keep those users on the blocking path.
if (fadingFix) {
display.displayBuffer(refreshMode, fadingFix);
return;
}
display.displayBufferAsync(refreshMode);
}
void GfxRenderer::waitRefreshComplete() const { display.waitRefreshComplete(); }
bool GfxRenderer::supportsAsyncRefresh() const { return !fadingFix && display.supportsAsyncRefresh(); }
std::string GfxRenderer::truncatedText(const int fontId, const char* text, const int maxWidth,
const EpdFontFamily::Style style) const {
if (!text || maxWidth <= 0) return "";