Function QueueCmdSetViewport

deps/SDL2/src/render/SDL_render.c:325–346

}

static int
QueueCmdSetViewport(SDL_Renderer *renderer)
{
    int retval = 0;
    if (!renderer->viewport_queued || (SDL_memcmp(&renderer->viewport, &renderer->last_queued_viewport, sizeof (SDL_Rect)) != 0)) {
        SDL_RenderCommand *cmd = AllocateRenderCommand(renderer);
        retval = -1;
        if (cmd != NULL) {
            cmd->command = SDL_RENDERCMD_SETVIEWPORT;
            cmd->data.viewport.first = 0;  /* render backend will fill this in. */
            SDL_memcpy(&cmd->data.viewport.rect, &renderer->viewport, sizeof (renderer->viewport));
            retval = renderer->QueueSetViewport(renderer, cmd);
            if (retval < 0) {
                cmd->command = SDL_RENDERCMD_NO_OP;
            } else {
                SDL_memcpy(&renderer->last_queued_viewport, &renderer->viewport, sizeof (SDL_Rect));
                renderer->viewport_queued = SDL_TRUE;
            }
        }
    }
    return retval;
}

static int
QueueCmdSetClipRect(SDL_Renderer *renderer)