Fix wrong framebuffer getting displayed

shrooms-vb-core

@@ -1 +1 @@
-Subproject commit 155a3aa678ee0c65ed8703bccc48d36f81da1db5
+Subproject commit 185362e6cd1c0f668a186adde2522da2f0d45307

src/window/vip/framebuffer.rs

@@ -215,8 +215,8 @@ impl ImageRenderer<1> for FrameBufferRenderer {
     fn render(&mut self, params: &Self::Params, images: &mut [ImageBuffer; 1]) {
         let image = &mut images[0];
 
-        let left_buffer = self.buffers[params.index * 2].borrow();
-        let right_buffer = self.buffers[params.index * 2 + 1].borrow();
+        let left_buffer = self.buffers[params.index].borrow();
+        let right_buffer = self.buffers[2 + params.index].borrow();
 
         let colors = if params.generic_palette {
             [