Function Draw

deps/SDL2/test/testrendertarget.c:181–223

}

SDL_bool
Draw(DrawState *s)
{
    SDL_Rect viewport;
    SDL_Texture *target;

    SDL_RenderGetViewport(s->renderer, &viewport);

    target = SDL_CreateTexture(s->renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_TARGET, viewport.w, viewport.h);
    if (!target) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create render target texture: %s\n", SDL_GetError());
        return SDL_FALSE;
    }
    SDL_SetRenderTarget(s->renderer, target);

    /* Draw the background */
    SDL_RenderCopy(s->renderer, s->background, NULL, NULL);

    /* Scale and draw the sprite */
    s->sprite_rect.w += s->scale_direction;
    s->sprite_rect.h += s->scale_direction;
    if (s->scale_direction > 0) {
        if (s->sprite_rect.w >= viewport.w || s->sprite_rect.h >= viewport.h) {
            s->scale_direction = -1;
        }
    } else {
        if (s->sprite_rect.w <= 1 || s->sprite_rect.h <= 1) {
            s->scale_direction = 1;
        }
    }
    s->sprite_rect.x = (viewport.w - s->sprite_rect.w) / 2;
    s->sprite_rect.y = (viewport.h - s->sprite_rect.h) / 2;

    SDL_RenderCopy(s->renderer, s->sprite, NULL, &s->sprite_rect);

    SDL_SetRenderTarget(s->renderer, NULL);
    SDL_RenderCopy(s->renderer, target, NULL, NULL);
    SDL_DestroyTexture(target);

    /* Update the screen! */
    SDL_RenderPresent(s->renderer);
    return SDL_TRUE;
}

void
loop()