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Performance improvement for slow graphic systems: avoid lag on X11 (Issue 405,269)

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git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1780 416bcca6-2ee7-4201-b75f-2eb2f807beb1
This commit is contained in:
Yves Rizoud
2011-04-16 18:24:24 +00:00
parent 02ecd8d29d
commit 63dcf9cc25
3 changed files with 34 additions and 6 deletions
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31
src/sdlscreen.c
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@@ -99,6 +99,8 @@ short Min_X=0;
short Min_Y=0;
short Max_X=10000;
short Max_Y=10000;
short Status_line_dirty_begin=0;
short Status_line_dirty_end=0;
#endif
#if (UPDATE_METHOD == UPDATE_METHOD_FULL_PAGE)
@@ -131,6 +133,13 @@ void Flush_update(void)
Min_X=Min_Y=10000;
Max_X=Max_Y=0;
}
if (Status_line_dirty_end)
{
SDL_UpdateRect(Screen_SDL, (18+(Status_line_dirty_begin*8))*Menu_factor_X*Pixel_width,Menu_status_Y*Pixel_height,(Status_line_dirty_end-Status_line_dirty_begin)*8*Menu_factor_X*Pixel_width,8*Menu_factor_Y*Pixel_height);
}
Status_line_dirty_begin=25;
Status_line_dirty_end=0;
#endif
}
@@ -166,6 +175,28 @@ void Update_rect(short x, short y, unsigned short width, unsigned short height)
}
void Update_status_line(short char_pos, short width)
{
#if (UPDATE_METHOD == UPDATE_METHOD_MULTI_RECTANGLE)
SDL_UpdateRect(Screen_SDL, (18+char_pos*8)*Menu_factor_X*Pixel_width,Menu_status_Y*Pixel_height,width*8*Menu_factor_X*Pixel_width,8*Menu_factor_Y*Pixel_height);
#endif
#if (UPDATE_METHOD == UPDATE_METHOD_CUMULATED)
// Merge the ranges
if (Status_line_dirty_end < char_pos+width)
Status_line_dirty_end=char_pos+width;
if (Status_line_dirty_begin > char_pos)
Status_line_dirty_begin=char_pos;
#endif
#if (UPDATE_METHOD == UPDATE_METHOD_FULL_PAGE)
(void)char_pos; // unused parameter
(void)width; // unused parameter
update_is_required=1;
#endif
}
///
/// Converts a SDL_Surface (indexed colors or RGB) into an array of bytes
/// (indexed colors).