Metrics window: shows indices along with triangles count (#299)

imgui.cpp

@@ -8833,7 +8833,7 @@ void ImGui::ShowMetricsWindow(bool* opened)
     {
         ImGui::Text("ImGui %s", ImGui::GetVersion());
         ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
-        ImGui::Text("%d vertices, %d triangles", ImGui::GetIO().MetricsRenderVertices, ImGui::GetIO().MetricsRenderIndices / 3);
+        ImGui::Text("%d vertices, %d indices (%d triangles)", ImGui::GetIO().MetricsRenderVertices, ImGui::GetIO().MetricsRenderIndices, ImGui::GetIO().MetricsRenderIndices / 3);
         ImGui::Text("%d allocations", ImGui::GetIO().MetricsAllocs);
         static bool show_clip_rects = true;
         ImGui::Checkbox("Show clipping rectangles when hovering ImDrawList", &show_clip_rects);