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Alternative texture update scheme

This commit is contained in:
Francesco Abbate 2021-04-27 14:04:02 +02:00
parent 0fe8415bb4
commit 67f431c69c
1 changed files with 2 additions and 1 deletions
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3
src/renderer.c
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@ -177,10 +177,11 @@ void ren_update_rects(RenRect *rects, int count) {
initial_frame = false; initial_frame = false;
} }
SDL_UpdateTexture(renderer.texture, NULL, renderer.surface->pixels, renderer.surface->w * 4);
for (int i = 0; i < count; i++) { for (int i = 0; i < count; i++) {
const RenRect *r = &rects[i]; const RenRect *r = &rects[i];
SDL_Rect sr = {.x = r->x, .y = r->y, .w = r->width, .h = r->height}; SDL_Rect sr = {.x = r->x, .y = r->y, .w = r->width, .h = r->height};
int32_t *pixels = ((int32_t *) renderer.surface->pixels) + r->x + renderer.surface->w * r->y;
SDL_UpdateTexture(renderer.texture, &sr, pixels, renderer.surface->w * 4);
SDL_RenderCopy(renderer.renderer, renderer.texture, &sr, &sr); SDL_RenderCopy(renderer.renderer, renderer.texture, &sr, &sr);
} }
SDL_RenderPresent(renderer.renderer); SDL_RenderPresent(renderer.renderer);