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51 lines
1.9 KiB
Diff
51 lines
1.9 KiB
Diff
Patch to get the fbterm 1.7 display somewhat better the gliphs on the Ben LCD.
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Author: Lluís Batlle i Rossell
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diff --git a/src/screen_render.cpp b/src/screen_render.cpp
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index e8f39b8..e0f90e9 100644
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--- a/src/screen_render.cpp
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+++ b/src/screen_render.cpp
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@@ -195,7 +195,40 @@ void Screen::draw##bits(u32 x, u32 y, u32 w, u8 fc, u8 bc, u8 *pixmap) \
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drawX(15, 5, 5, 5, u16, writew)
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drawX(16, 5, 6, 5, u16, writew)
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-drawX(32, 8, 8, 8, u32, writel)
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+
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+void Screen::draw32(u32 x, u32 y, u32 w, u8 fc, u8 bc, u8 *pixmap)
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+{
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+ /* This code takes into account the Ben Nanonote LCD, that has the distribution:
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+ * 0: RR GG BB RR GG BB
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+ * 1: GG BB RR GG BB RR
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+ * 2: RR GG BB RR GG BB
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+ * 3: ...
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+ *
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+ * We display the odd rows as 50% green in the current pixel, 50% in the next */
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+ u8 red, green, blue;
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+ u8 pixel;
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+ u32 color;
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+ u32 *dst = (u32 *)(mVMemBase + y * mBytesPerLine + x * bytes_per_pixel);
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+ /* To work with white background, we ensure to paint the first pixel */
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+ u8 prevgreen = mPalette[bc].green/2;
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+
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+ for (; w--; pixmap++, dst++) {
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+ u8 newgreen;
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+ pixel = *pixmap;
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+
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+ red = mPalette[bc].red + (((mPalette[fc].red - mPalette[bc].red) * pixel) >> 8);
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+ newgreen = mPalette[bc].green + (((mPalette[fc].green - mPalette[bc].green) * pixel) >> 8);
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+ blue = mPalette[bc].blue + (((mPalette[fc].blue - mPalette[bc].blue) * pixel) >> 8);
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+
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+ /* width == 0 is the special case for the last byte, where we paint full green.
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+ * That's relevant for white background, like when running 'top'. */
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+ green = ((y & 1) == 0 || w == 0) ? newgreen : (newgreen/2 + prevgreen);
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+ color = (red << 16) | (green << 8) | (blue);
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+ writel(dst, color);
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+ prevgreen = newgreen/2;
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+ }
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+}
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+
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#define drawXBg(bits, lred, lgreen, lblue, type, fbwrite) \
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\
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