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Win32 simulator performance optimisation: Invalidate onle the part of the window that actually changed in lcd_update() and lcd_update_rect().

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6150 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-03-06 13:28:40 +00:00
parent 1167b403e6
commit 0231c61699
1 changed files with 21 additions and 8 deletions
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29
uisimulator/win32/lcd-win32.c
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@ -58,6 +58,8 @@ void lcd_set_invert_display(bool invert)
void lcd_update()
{
int x, y;
RECT r;
if (hGUIWnd == NULL)
_endthread ();
@ -82,10 +84,13 @@ void lcd_update()
for (y = 0; y < LCD_HEIGHT; y++)
bitmap[y][x] = ((lcd_framebuffer[y/8][x] >> (y & 7)) & 1);
InvalidateRect (hGUIWnd, NULL, FALSE);
/* natural sleep :) Bagder: why is this here? */
//Sleep (50);
/* Invalidate only the window part that actually did change */
GetClientRect (hGUIWnd, &r);
r.left = UI_LCD_POSX * r.right / UI_WIDTH;
r.top = UI_LCD_POSY * r.bottom / UI_HEIGHT;
r.right = (UI_LCD_POSX + UI_LCD_WIDTH) * r.right / UI_WIDTH;
r.bottom = (UI_LCD_POSY + UI_LCD_HEIGHT) * r.bottom / UI_HEIGHT;
InvalidateRect (hGUIWnd, &r, FALSE);
}
void lcd_update_rect(int x_start, int y_start,
@ -93,6 +98,7 @@ void lcd_update_rect(int x_start, int y_start,
{
int x, y;
int xmax, ymax;
RECT r;
ymax = y_start + height;
xmax = x_start + width;
@ -109,10 +115,17 @@ void lcd_update_rect(int x_start, int y_start,
for (y = y_start; y < ymax; y++)
bitmap[y][x] = ((lcd_framebuffer[y/8][x] >> (y & 7)) & 1);
/* Bagder: If I only knew how, I would make this call only invalidate
the actual rectangle we want updated here, this NULL thing here will
make the full rectangle updated! */
InvalidateRect (hGUIWnd, NULL, FALSE);
/* Invalidate only the window part that actually did change */
GetClientRect (hGUIWnd, &r);
r.left = (UI_LCD_POSX + (UI_LCD_WIDTH * x_start / LCD_WIDTH))
* r.right / UI_WIDTH;
r.top = (UI_LCD_POSY + (UI_LCD_HEIGHT * y_start / LCD_HEIGHT))
* r.bottom / UI_HEIGHT;
r.right = (UI_LCD_POSX + (UI_LCD_WIDTH * xmax / LCD_WIDTH))
* r.right / UI_WIDTH;
r.bottom = (UI_LCD_POSY + (UI_LCD_HEIGHT * ymax / LCD_HEIGHT))
* r.bottom / UI_HEIGHT;
InvalidateRect (hGUIWnd, &r, FALSE);
}
/* lcd_backlight()