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Fix update rectangle calculation. This caused the black artifacts outside the screen area introduced with backlight simulation for colour targets.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20199 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2009-03-04 18:46:08 +00:00
parent 4f87abf90a
commit 08b643ee57
1 changed files with 8 additions and 12 deletions
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20
uisimulator/sdl/lcd-sdl.c
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@ -75,20 +75,16 @@ void sdl_update_rect(SDL_Surface *surface, int x_start, int y_start, int width,
void sdl_gui_update(SDL_Surface *surface, int x_start, int y_start, int width,
int height, int max_x, int max_y, int ui_x, int ui_y)
{
int xmax, ymax;
ymax = y_start + height;
xmax = x_start + width;
if(xmax > max_x)
xmax = max_x;
if(ymax >= max_y)
ymax = max_y;
if (x_start + width > max_x)
width = max_x - x_start;
if (y_start + height > max_y)
height = max_y - y_start;
SDL_Rect src = {x_start * display_zoom, y_start * display_zoom,
xmax * display_zoom, ymax * display_zoom};
SDL_Rect dest= {(ui_x + x_start) * display_zoom, (ui_y + y_start) * display_zoom,
xmax * display_zoom, ymax * display_zoom};
width * display_zoom, height * display_zoom};
SDL_Rect dest= {(ui_x + x_start) * display_zoom,
(ui_y + y_start) * display_zoom,
width * display_zoom, height * display_zoom};
if (surface->flags & SDL_SRCALPHA) /* alpha needs a black background */
SDL_FillRect(gui_surface, &dest, 0);