Extended bitmap viewer by option to togglie between grayscale and bw mode

2026-04-08 09:37:08 +02:00
parent e828245c6b
commit 66508258d3
8 changed files with 198 additions and 73 deletions
@@ -60,7 +60,11 @@ struct RenderConfig {
  ImageDitherMode ditherMode = ImageDitherMode::Bayer;
  bool performanceMode = false;
  bool useExactDimensions = false;  // If true, use maxWidth/maxHeight as exact output size (no recalculation)
-  std::string cachePath;            // If non-empty, decoder will write pixel cache to this path
+  // If true, the decoder uses a 1-bit Atkinson dither and emits only the values 0/3 — suitable for
+  // pure black-and-white display (no grayscale planes). The 4-level dither path produces values 1/2
+  // which the BW DirectPixelWriter collapses to black, making mid-grays render very dark.
+  bool monochromeOutput = false;
+  std::string cachePath;  // If non-empty, decoder will write pixel cache to this path
 };

 class ImageToFramebufferDecoder {