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Vastly increase speed of SDL screen updates for RGB565.

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Flyspray: FS#11834 (with minor changes by me).
Author: Thomas Jarosch

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28914 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2010-12-27 22:08:34 +00:00
parent 0bf1bd1d51
commit 3c43503283
3 changed files with 41 additions and 9 deletions
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1
apps/plugins/test_fps.c
View file

@ -370,6 +370,7 @@ enum plugin_status plugin_start(const void* parameter)
backlight_force_on(); /* backlight control in lib/helper.c */ backlight_force_on(); /* backlight control in lib/helper.c */
time_main_update(); time_main_update();
rb->sleep(HZ);
#if defined(HAVE_LCD_COLOR) && (MEMORYSIZE > 2) #if defined(HAVE_LCD_COLOR) && (MEMORYSIZE > 2)
time_main_yuv(); time_main_yuv();
#endif #endif

39
firmware/target/hosted/sdl/lcd-sdl.c
View file

@ -30,10 +30,40 @@ void sdl_update_rect(SDL_Surface *surface, int x_start, int y_start, int width,
int height, int max_x, int max_y, int height, int max_x, int max_y,
unsigned long (*getpixel)(int, int)) unsigned long (*getpixel)(int, int))
{ {
SDL_Rect dest;
#if LCD_DEPTH >= 8 && (LCD_PIXELFORMAT == RGB565) \
&& !defined(LCD_STRIDEFORMAT) && !defined(HAVE_LCD_SPLIT)
SDL_Rect src;
(void)max_x;
(void)max_y;
(void)getpixel;
/* Update complete screen via one blit operation (fast) */
SDL_Surface *lcd = SDL_CreateRGBSurfaceFrom(lcd_framebuffer, LCD_FBWIDTH,
LCD_FBHEIGHT, LCD_DEPTH,
LCD_FBWIDTH * LCD_DEPTH/8,
0, 0, 0, 0);
src.x = x_start;
src.y = y_start;
src.w = width;
src.h = height;
if (display_zoom == 1) {
dest = src;
SDL_BlitSurface(lcd, &src, surface, &dest);
} else {
/* Note: SDL_SoftStretch is currently marked as DO NOT USE
but there are no real alternatives for efficent zooming. */
dest.x = src.x * display_zoom;
dest.y = src.y * display_zoom;
dest.w = src.w * display_zoom;
dest.h = src.h * display_zoom;
SDL_SoftStretch(lcd, &src, surface, &dest);
}
SDL_FreeSurface(lcd);
#else
int x, y; int x, y;
int xmax, ymax; int xmax, ymax;
SDL_Rect dest; /* Very slow pixel-by-pixel drawing */
ymax = y_start + height; ymax = y_start + height;
xmax = x_start + width; xmax = x_start + width;
@ -42,8 +72,6 @@ void sdl_update_rect(SDL_Surface *surface, int x_start, int y_start, int width,
if(ymax >= max_y) if(ymax >= max_y)
ymax = max_y; ymax = max_y;
SDL_LockSurface(surface);
dest.w = display_zoom; dest.w = display_zoom;
dest.h = display_zoom; dest.h = display_zoom;
@ -69,8 +97,7 @@ void sdl_update_rect(SDL_Surface *surface, int x_start, int y_start, int width,
} }
#endif #endif
} }
#endif
SDL_UnlockSurface(surface);
} }
void sdl_gui_update(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,

6
firmware/target/hosted/sdl/system-sdl.c
View file

@ -84,6 +84,7 @@ static int sdl_event_thread(void * param)
SDL_Surface *picture_surface = NULL; SDL_Surface *picture_surface = NULL;
int width, height; int width, height;
int depth;
/* Try and load the background image. If it fails go without */ /* Try and load the background image. If it fails go without */
if (background) { if (background) {
@ -116,8 +117,11 @@ static int sdl_event_thread(void * param)
} }
} }
depth = LCD_DEPTH;
if (depth < 8)
depth = 16;
if ((gui_surface = SDL_SetVideoMode(width * display_zoom, height * display_zoom, 24, SDL_HWSURFACE|SDL_DOUBLEBUF)) == NULL) { if ((gui_surface = SDL_SetVideoMode(width * display_zoom, height * display_zoom, depth, SDL_HWSURFACE|SDL_DOUBLEBUF)) == NULL) {
panicf("%s", SDL_GetError()); panicf("%s", SDL_GetError());
} }