len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-10-13 18:17:39 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

sdl: fix: concurrent drawing on Windows

Browse source 
On Windows, we need to prevent the event thread
from drawing at the same time as the main thread,
when window is being adjusted.

Change-Id: I2b4e4a50fec427e53e310593850e2a556a594b31
This commit is contained in:
Christian Soffke 2024-12-26 12:11:55 +01:00
parent 0a88b818e9
commit fa8b095f29
5 changed files with 18 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
firmware/target/hosted/sdl/lcd-sdl.c
View file

@ -102,6 +102,9 @@ void sdl_gui_update(SDL_Surface *surface, int x_start, int y_start, int width,
SDL_Rect dest= {ui_x + x_start, ui_y + y_start, width, height};
uint8_t alpha;
SDL_LockMutex(window_mutex);
if (SDL_GetSurfaceAlphaMod(surface,&alpha) == 0 && alpha < 255)
SDL_FillRect(sim_lcd_surface, NULL, 0); /* alpha needs a black background */
@ -111,6 +114,7 @@ void sdl_gui_update(SDL_Surface *surface, int x_start, int y_start, int width,
if (!sdl_window_adjust()) /* already calls sdl_window_render itself */
sdl_window_render();
SDL_UnlockMutex(window_mutex);
}
/* set a range of bitmap indices to a gradient from startcolour to endcolour */