diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
index 6189ac4..0a80b55 100644
--- a/src/imgui_impl.ts
+++ b/src/imgui_impl.ts
@@ -65,7 +65,7 @@
         // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
         gl && gl.enable(gl.BLEND);
         gl && gl.blendEquation(gl.FUNC_ADD);
-        gl && gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
         gl && gl.disable(gl.CULL_FACE);
         gl && gl.disable(gl.DEPTH_TEST);
         gl && gl.enable(gl.SCISSOR_TEST);