diff --git a/src/render/shaders/trans_frag.glsl b/src/render/shaders/trans_frag.glsl
index a5ac90d..cd93bb1 100644
--- a/src/render/shaders/trans_frag.glsl
+++ b/src/render/shaders/trans_frag.glsl
@@ -13,9 +13,9 @@ void main() {
     float r = accum.a;
     accum.a = aa;
     if (r >= 1.0) {
-        fragColor = vec4(col.rgb, 0.0);
+        fragColor = vec4(col.rgb, 1.0);
     } else {
         vec3 alp = clamp(accum.rgb / clamp(accum.a, 1e-4, 5e4), 0.0, 1.0);
-        fragColor = vec4(col.rgb * r  + alp * (1.0 - r), 0.0);
+        fragColor = vec4(col.rgb * r  + alp * (1.0 - r), 1.0);
     }
 }