diff --git a/internal/igwrap/backend/render.go b/internal/igwrap/backend/render.go
index ef76278..ad7f522 100644
--- a/internal/igwrap/backend/render.go
+++ b/internal/igwrap/backend/render.go
@@ -56,6 +56,8 @@ func renderInit() {
 	gl.BindTexture(gl.TEXTURE_2D, uint32(lastTexture))
 	gl.BindBuffer(gl.ARRAY_BUFFER, uint32(lastArrayBuffer))
 	gl.BindVertexArray(uint32(lastVertexArray))
+
+	io.SetBackendFlags(imgui.BackendFlagsRendererHasVtxOffset)
 }
 
 func CreateFontsTexture() {
@@ -190,7 +192,6 @@ func Render(win *glfw.Window) {
 
 	// Draw
 	for _, list := range draw.CommandLists() {
-		var indexBufferOffset uintptr
 
 		vertexBuffer, vertexBufferSize := list.VertexBuffer()
 		gl.BindBuffer(gl.ARRAY_BUFFER, vbo)
@@ -208,9 +209,14 @@ func Render(win *glfw.Window) {
 				gl.BindTexture(gl.TEXTURE_2D, uint32(cmd.TextureID()))
 				clipRect := cmd.ClipRect()
 				gl.Scissor(int32(clipRect.X), int32(fbHeight)-int32(clipRect.W), int32(clipRect.Z-clipRect.X), int32(clipRect.W-clipRect.Y))
-				gl.DrawElementsWithOffset(gl.TRIANGLES, int32(cmd.ElementCount()), uint32(drawType), indexBufferOffset)
+				gl.DrawElementsBaseVertexWithOffset(
+					gl.TRIANGLES,
+					int32(cmd.ElementCount()),
+					uint32(drawType),
+					uintptr(cmd.IndexOffset()*indexSize),
+					int32(cmd.VertexOffset()),
+				)
 			}
-			indexBufferOffset += uintptr(cmd.ElementCount() * indexSize)
 		}
 	}
 	gl.DeleteVertexArrays(1, &vao)