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Move display update into separate procedure

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This commit is contained in:
Nick Briggs 2021-11-08 22:02:43 -08:00
parent e5b8248465
commit 2b957aa8f3
1 changed files with 39 additions and 40 deletions
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79
src/sdl.c
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@ -425,6 +425,44 @@ void sdl_set_invert(int flag) {
void sdl_setMousePosition(int x, int y) {
SDL_WarpMouseInWindow(sdl_window, x, y);
}
void sdl_update_display_rendering() {
int before = 0;
int after = 0;
if(should_update_texture) {
before = SDL_GetTicks();
sdl_bitblt_to_screen(min_x, min_y, max_x - min_x, max_y - min_y);
SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(char));
after = SDL_GetTicks();
// printf("UpdateTexture took %dms\n", after - before);
should_update_texture = 0;
min_x = sdl_displaywidth;
min_y = sdl_displayheight;
max_x = max_y = 0;
}
int this_draw = SDL_GetTicks();
before = SDL_GetTicks();
if(this_draw - last_draw > 16) {
before = SDL_GetTicks();
SDL_RenderClear(sdl_renderer);
SDL_Rect r;
r.x = 0;
r.y = 0;
r.w = min(sdl_windowwidth / sdl_pixelscale, sdl_displaywidth);
r.h = min(sdl_windowheight / sdl_pixelscale, sdl_displayheight);
SDL_Rect s;
s.x = 0;
s.y = 0;
s.w = min(sdl_windowwidth / sdl_pixelscale * sdl_pixelscale, sdl_displaywidth * sdl_pixelscale);
s.h = min(sdl_windowheight / sdl_pixelscale * sdl_pixelscale, sdl_displayheight * sdl_pixelscale);
SDL_RenderCopy(sdl_renderer, sdl_texture, &r, &s);
SDL_RenderPresent(sdl_renderer);
last_draw = this_draw;
after = SDL_GetTicks();
// printf("rendering took %dms\n", after - before);
}
}
int process_events_time = 0;
void process_SDLevents() {
// printf("processing events delta %dms\n", SDL_GetTicks() - process_events_time);
@ -512,46 +550,7 @@ void process_SDLevents() {
printf("other event type: %d\n", event.type);
}
}
// handle_keyboard();
int before = 0;
int after = 0;
if(should_update_texture) {
before = SDL_GetTicks();
sdl_bitblt_to_screen(min_x, min_y, max_x - min_x, max_y - min_y);
SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(char));
after = SDL_GetTicks();
// printf("UpdateTexture took %dms\n", after - before);
should_update_texture = 0;
min_x = sdl_displaywidth;
min_y = sdl_displayheight;
max_x = max_y = 0;
}
int this_draw = SDL_GetTicks();
before = SDL_GetTicks();
// printf("processing events took %dms\n", before - process_events_time);
if(this_draw - last_draw > 16) {
before = SDL_GetTicks();
/* SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32)); */
after = SDL_GetTicks();
// should_update_texture = 0;
SDL_RenderClear(sdl_renderer);
SDL_Rect r;
r.x = 0;
r.y = 0;
r.w = min(sdl_windowwidth / sdl_pixelscale, sdl_displaywidth);
r.h = min(sdl_windowheight / sdl_pixelscale, sdl_displayheight);
SDL_Rect s;
s.x = 0;
s.y = 0;
s.w = min(sdl_windowwidth / sdl_pixelscale * sdl_pixelscale, sdl_displaywidth * sdl_pixelscale);
s.h = min(sdl_windowheight / sdl_pixelscale * sdl_pixelscale, sdl_displayheight * sdl_pixelscale);
SDL_RenderCopy(sdl_renderer, sdl_texture, &r, &s);
SDL_RenderPresent(sdl_renderer);
last_draw = this_draw;
after = SDL_GetTicks();
// printf("rendering took %dms\n", after - before);
}
sdl_update_display_rendering();
}
int init_SDL(char *windowtitle, int w, int h, int s) {
sdl_pixelscale = s;