diff --git a/Cargo.toml b/Cargo.toml
index 41b64d7b..01980577 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,7 @@ path = "src/main.rs"
 # However, building with full -O3 optimizations takes too long for a debug build.
 # Use an -O1 optimization level strikes a good compromise between build and program performance.
 opt-level = 1
+debug-assertions = true
 
 [dependencies]
 cfg-if = "1.0.0"
diff --git a/src/gl/mod.rs b/src/gl/mod.rs
index 91f8d525..dde20a30 100644
--- a/src/gl/mod.rs
+++ b/src/gl/mod.rs
@@ -901,6 +901,61 @@ impl Framebuffer {
             );
         }
     }
+
+    pub fn renderbuffer(&self, attachment: Attachment, rb: &Renderbuffer) {
+        unsafe {
+            glow_context().framebuffer_renderbuffer(
+                gl::FRAMEBUFFER,
+                attachment,
+                gl::RENDERBUFFER,
+                Some(rb.0),
+            );
+        }
+    }
+}
+
+#[derive(Default)]
+pub struct Renderbuffer(glow::Renderbuffer);
+
+impl Renderbuffer {
+    pub fn new() -> Renderbuffer {
+        Renderbuffer(unsafe { glow_context().create_renderbuffer().unwrap() })
+    }
+
+    pub fn bind(&self) {
+        unsafe {
+            glow_context().bind_renderbuffer(gl::RENDERBUFFER, Some(self.0));
+        }
+    }
+
+    pub fn storage(&self, width: u32, height: u32, format: TextureFormat) {
+        unsafe {
+            glow_context().renderbuffer_storage(
+                gl::RENDERBUFFER,
+                format,
+                width as i32,
+                height as i32,
+            );
+        }
+    }
+
+    pub fn storage_multisample(
+        &self,
+        samples: i32,
+        width: u32,
+        height: u32,
+        format: TextureFormat,
+    ) {
+        unsafe {
+            glow_context().renderbuffer_storage_multisample(
+                gl::RENDERBUFFER,
+                samples,
+                format,
+                width as i32,
+                height as i32,
+            );
+        }
+    }
 }
 
 impl Drop for Framebuffer {
diff --git a/src/render/mod.rs b/src/render/mod.rs
index b1cc157b..001da452 100644
--- a/src/render/mod.rs
+++ b/src/render/mod.rs
@@ -761,7 +761,7 @@ impl Renderer {
 struct TransInfo {
     main: gl::Framebuffer,
     fb_color: gl::Texture,
-    _fb_depth: gl::Texture,
+    _fb_depth: gl::Renderbuffer,
     trans: gl::Framebuffer,
     accum: gl::Texture,
     revealage: gl::Texture,
@@ -870,22 +870,15 @@ impl TransInfo {
         fb_color.set_parameter(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR);
 
         main.texture_2d(gl::COLOR_ATTACHMENT_0, gl::TEXTURE_2D, &fb_color, 0);
-        let fb_depth = gl::Texture::new();
-        fb_depth.bind(gl::TEXTURE_2D);
-        fb_depth.image_2d_ex(
-            gl::TEXTURE_2D,
-            0,
-            width,
-            height,
-            gl::DEPTH_COMPONENT24,
-            gl::DEPTH_COMPONENT,
-            gl::UNSIGNED_BYTE,
-            None,
-        );
-        fb_depth.set_parameter(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::LINEAR);
-        fb_depth.set_parameter(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR);
 
-        main.texture_2d(gl::DEPTH_ATTACHMENT, gl::TEXTURE_2D, &fb_depth, 0);
+        let fb_depth = gl::Renderbuffer::new();
+        fb_depth.bind();
+        fb_depth.storage(width, height, gl::DEPTH_COMPONENT24);
+        //fb_depth.set_parameter(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::LINEAR);
+        //fb_depth.set_parameter(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR);
+
+        //main.texture_2d(gl::DEPTH_ATTACHMENT, gl::TEXTURE_2D, &fb_depth, 0);
+        main.renderbuffer(gl::DEPTH_ATTACHMENT, &fb_depth);
         gl::check_framebuffer_status();
 
         gl::unbind_framebuffer();