diff --git a/util/test/demos/gl/gl_draw_zoo.cpp b/util/test/demos/gl/gl_draw_zoo.cpp
index f559a70d4..d734742b6 100644
--- a/util/test/demos/gl/gl_draw_zoo.cpp
+++ b/util/test/demos/gl/gl_draw_zoo.cpp
@@ -306,6 +306,15 @@ void main()
     glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA32F, screenWidth, screenHeight);
     glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colattach, 0);
 
+    // Depth texture
+    GLuint depthattach = MakeTexture();
+
+    glBindTexture(GL_TEXTURE_2D, depthattach);
+    glTexStorage2D(GL_TEXTURE_2D, 1, GL_DEPTH24_STENCIL8, screenWidth, screenHeight);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthattach,
+                           0);
+    glClearDepth(0.0f);
+
     while(Running())
     {
       glBindFramebuffer(GL_FRAMEBUFFER, 0);
@@ -313,6 +322,9 @@ void main()
       float col[] = {0.2f, 0.2f, 0.2f, 1.0f};
       glClearBufferfv(GL_COLOR, 0, col);
 
+      setMarker("GL_ClearDepth");
+      glClear(GL_DEPTH_BUFFER_BIT);
+
       glBindFramebuffer(GL_FRAMEBUFFER, fbo);
       glBindVertexBuffer(0, vb, 0, sizeof(DefaultA2V));
       glBindVertexBuffer(0, instvb, 0, sizeof(Vec4f));
diff --git a/util/test/tests/GL/GL_Draw_Zoo.py b/util/test/tests/GL/GL_Draw_Zoo.py
index b990c15c6..9dea647ec 100644
--- a/util/test/tests/GL/GL_Draw_Zoo.py
+++ b/util/test/tests/GL/GL_Draw_Zoo.py
@@ -39,3 +39,11 @@ class GL_Draw_Zoo(rdtest.Draw_Zoo):
 
         self.check(pipe.IsStripRestartEnabled())
         self.check((pipe.GetStripRestartIndex() & ((1 << (ib.byteStride*8)) - 1)) == 0xffff)
+        
+        draw = self.find_draw("GL_ClearDepth")
+        self.check(draw is not None)
+        
+        draw = draw.next
+        
+        self.check(draw.flags & (rd.DrawFlags.Clear|rd.DrawFlags.ClearDepthStencil) == (rd.DrawFlags.Clear|rd.DrawFlags.ClearDepthStencil))
+