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Refactor, don't update texture on every bitblt.

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This commit is contained in:
Peter
2021-10-21 08:25:09 +02:00
committed by Nick Briggs
parent e39b650f4d
commit ffacda1278
1 changed files with 18 additions and 4 deletions
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22
src/sdl.c
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@@ -203,6 +203,7 @@ void set_pixel(SDL_Surface *surface, int x, int y, Uint32 pixel)
} }
void sdl_bitblt_to_screen(int _x, int _y, int _w, int _h) { 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 width = sdl_displaywidth;
int height = sdl_displayheight; int height = sdl_displayheight;
int bpw = 32; int bpw = 32;
@@ -223,7 +224,12 @@ void sdl_bitblt_to_screen(int _x, int _y, int _w, int _h) {
} }
} }
} }
SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32)); int after = SDL_GetTicks();
// printf("bitblting took %dms\n", after - before);
/* before = SDL_GetTicks(); */
/* SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32)); */
/* after = SDL_GetTicks(); */
/* printf("UpdateTexture took %dms\n", after - before); */
} }
int map_key(SDL_Keycode k) { int map_key(SDL_Keycode k) {
for(int i = 0; keymap[i] != -1; i+= 2) { for(int i = 0; keymap[i] != -1; i+= 2) {
@@ -312,7 +318,10 @@ static int last_keystate[512] = { 0 };
/* } */ /* } */
/* } */ /* } */
/* } */ /* } */
int process_events_time = 0;
void process_SDLevents() { void process_SDLevents() {
// printf("processing events delta %dms\n", SDL_GetTicks() - process_events_time);
process_events_time = SDL_GetTicks();
SDL_Event event; SDL_Event event;
while(SDL_PollEvent(&event)) { while(SDL_PollEvent(&event)) {
switch(event.type) { switch(event.type) {
@@ -390,12 +399,15 @@ void process_SDLevents() {
} }
} }
// handle_keyboard(); // handle_keyboard();
/* int before = SDL_GetTicks(); */
/* sdl_bitblt_to_screen(); */ /* sdl_bitblt_to_screen(); */
/* int after = SDL_GetTicks(); */
// printf("blitting took %dms\n", after - before);
// SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32)); // SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32));
int before = SDL_GetTicks();
SDL_UpdateTexture(sdl_texture, NULL, buffer, sdl_displaywidth * sizeof(Uint32));
int after = SDL_GetTicks();
// printf("UpdateTexture took %dms\n", after - before);
int this_draw = SDL_GetTicks(); int this_draw = SDL_GetTicks();
before = SDL_GetTicks();
// printf("processing events took %dms\n", before - process_events_time);
if(this_draw - last_draw > 16) { if(this_draw - last_draw > 16) {
SDL_RenderClear(sdl_renderer); SDL_RenderClear(sdl_renderer);
SDL_Rect r; SDL_Rect r;
@@ -411,6 +423,8 @@ void process_SDLevents() {
SDL_RenderCopy(sdl_renderer, sdl_texture, &r, &s); SDL_RenderCopy(sdl_renderer, sdl_texture, &r, &s);
SDL_RenderPresent(sdl_renderer); SDL_RenderPresent(sdl_renderer);
last_draw = this_draw; last_draw = this_draw;
after = SDL_GetTicks();
// printf("rendering took %dms\n", after - before);
} }
} }
int init_SDL(int w, int h, int s) { int init_SDL(int w, int h, int s) {