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Fix overlay positioning for partial updates

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This commit is contained in:
Gordon Williams 2022-07-27 16:17:47 +01:00
parent 5142b3daab
commit 5a99fbdafe
1 changed files with 3 additions and 3 deletions
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6
libs/graphics/lcd_memlcd.c
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@ -197,7 +197,7 @@ void lcdMemLCD_flip(JsGraphics *gfx) {
// initialise image layer
GfxDrawImageLayer l;
l.x1 = 0;
l.y1 = 0;
l.y1 = lcdOverlayY;
l.img = overlayImg;
l.rotate = 0;
l.scale = 1;
@ -205,7 +205,7 @@ void lcdMemLCD_flip(JsGraphics *gfx) {
l.repeat = false;
jsvStringIteratorNew(&l.it, l.img.buffer, (size_t)l.img.bitmapOffset);
_jswrap_drawImageLayerInit(&l);
_jswrap_drawImageLayerSetStart(&l, 0, 0);
_jswrap_drawImageLayerSetStart(&l, 0, y1);
for (int y=y1;y<=y2;y++) {
int bufferLine = LCD_HEIGHT + (y&1); // alternate lines so we still get dither AND we can send while
unsigned char *buf = &lcdBuffer[LCD_STRIDE*bufferLine]; // point to line right on the end of gfx
@ -220,8 +220,8 @@ void lcdMemLCD_flip(JsGraphics *gfx) {
lcdMemLCD_setPixel(NULL, x+lcdOverlayX, bufferLine, c);
_jswrap_drawImageLayerNextX(&l);
}
_jswrap_drawImageLayerNextY(&l);
}
_jswrap_drawImageLayerNextY(&l);
// send the line
#ifdef EMULATED
memcpy(&fakeLCDBuffer[LCD_STRIDE*y], buf, LCD_STRIDE);