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Only update texture on damage.

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Peter 2021-10-22 07:34:03 +02:00 committed by Nick Briggs
parent 6f0ca7ad1c
commit 380416fa2d
2 changed files with 24 additions and 18 deletions
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12
src/initdsp.c
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@ -80,6 +80,10 @@ extern DLword *ColorDisplayRegion68k;
extern int MonoOrColor;
#endif /* COLOR */
#ifdef SDL
extern void sdl_notify_damage(int, int, int, int);
#endif /* SDL */
#ifdef XWINDOW
DLword *DisplayRegion68k_end_addr;
extern int *Xdisplay; /* DAANGER -jarl nilsson 27-apr-92 */
@ -264,7 +268,7 @@ in_display_segment(baseaddr)
<<<<<<< HEAD
void flush_display_buffer(void) {
#ifdef SDL
// sdl_bitblt_to_screen(0, 0, sdl_displaywidth, sdl_displayheight);
sdl_notify_damage(0, 0, sdl_displaywidth, sdl_displayheight);
#endif
#ifdef XWINDOW
(currentdsp->bitblt_to_screen)(currentdsp, DisplayRegion68k, currentdsp->Visible.x,
@ -295,7 +299,7 @@ void flush_display_region(int x, int y, int w, int h)
{
// printf("flush_display_region %d %d %d %d\n", x, y, w, h);
#ifdef SDL
// sdl_bitblt_to_screen(x, y, w, h);
sdl_notify_damage(x, y, w, h);
#endif
#if (defined(XWINDOW) || defined(DOS))
TPRINT(("Enter flush_display_region x=%d, y=%d, w=%d, h=%d\n", x, y, w, h));
@ -341,7 +345,7 @@ void flush_display_lineregion(UNSIGNED x, DLword *ybase, int w, int h)
y = ((DLword *)ybase - DisplayRegion68k) / DLWORD_PERLINE;
// printf("flush_display_lineregion %d %d %d %d\n", x, y, w, h);
#ifdef SDL
// sdl_bitblt_to_screen(x, y, w, h);
sdl_notify_damage(x, y, w, h);
#endif
#if (defined(XWINDOW) || defined(DOS))
TPRINT(("Enter flush_display_lineregion x=%p, y=%d, w=%d, h=%d\n", (void *)x, y, w, h));
@ -375,7 +379,7 @@ void flush_display_ptrregion(DLword *ybase, UNSIGNED bitoffset, int w, int h)
x = bitoffset + (BITSPERWORD * (baseoffset - (DLWORD_PERLINE * y)));
// printf("flush_display_ptrregion %d %d %d %d\n", x, y, w, h);
#ifdef SDL
// sdl_bitblt_to_screen(x, y, w, h);
sdl_notify_damage(x, y, w, h);
#endif
#if (defined(XWINDOW) || defined(DOS))
TPRINT(("Enter flush_display_ptrregion\n x=%d, y=%d, w=%d, h=%d\n", x, y, w, h));

30
src/sdl.c
View File

@ -207,8 +207,12 @@ void set_pixel(SDL_Surface *surface, int x, int y, Uint32 pixel)
}
int should_update_texture = 0;
void sdl_notify_damage(int x, int y, int w, int h) {
should_update_texture = 1;
}
void sdl_bitblt_to_screen(int _x, int _y, int _w, int _h) {
// printf("bitblting\n");
//printf("bitblting\n");
int before = SDL_GetTicks();
int width = sdl_displaywidth;
int height = sdl_displayheight;
@ -234,7 +238,7 @@ void sdl_bitblt_to_screen(int _x, int _y, int _w, int _h) {
}
}
}
should_update_texture = 1;
//should_update_texture = 1;
int after = SDL_GetTicks();
// printf("bitblting took %dms\n", after - before);
/* before = SDL_GetTicks(); */
@ -414,27 +418,25 @@ void process_SDLevents() {
}
}
// handle_keyboard();
/* sdl_bitblt_to_screen(); */
// SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32));
int before = 0;
int after = 0;
/* if(should_update_texture) { */
/* before = SDL_GetTicks(); */
/* SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32)); */
/* after = SDL_GetTicks(); */
/* should_update_texture = 0; */
/* } */
// printf("UpdateTexture took %dms\n", after - before);
if(should_update_texture) {
before = SDL_GetTicks();
sdl_bitblt_to_screen(0, 0, sdl_displaywidth, sdl_displayheight);
SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32));
after = SDL_GetTicks();
// printf("UpdateTexture took %dms\n", after - before);
should_update_texture = 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));
/* SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32)); */
after = SDL_GetTicks();
should_update_texture = 0;
// should_update_texture = 0;
sdl_bitblt_to_screen(0, 0, sdl_displaywidth, sdl_displayheight);
SDL_RenderClear(sdl_renderer);
SDL_Rect r;
r.x = 0;