diff --git a/data/ofxGPUFont/shaders/DEBUG_ES3/font.frag b/data/ofxGPUFont/shaders/DEBUG_ES3/font.frag
index bb956ef..32c61d4 100644
--- a/data/ofxGPUFont/shaders/DEBUG_ES3/font.frag
+++ b/data/ofxGPUFont/shaders/DEBUG_ES3/font.frag
@@ -108,17 +108,6 @@ vec2 rotate(vec2 v) {
 }
 
 void main() {
-    //vec4 debug = texture(curves, vec2(uv.x, 0.5));
-    //ivec4 debug = texelFetch(glyphs, ivec2(uv.x * float(textureSize(glyphs, 0).x), 0), 0);
-    //result = vec4(debug.rgb, 1.0);
-
-    //Glyph gly = loadGlyph(bufferIndex);
-    //result = vec4((float(gly.start) / 1883.0), (float(gly.count) / 42.0), 0.0, 1.0);
-
-    // verify bufferIndex [x]
-    //result = vec4((float(bufferIndex) / 100.0), 0.0, 0.0, 1.0);
-    //return;
-
     float alpha = 0.0;
 
     // Inverse of the diameter of a pixel in uv units for anti-aliasing.
@@ -137,25 +126,13 @@ void main() {
             alpha += computeCoverage(inverseDiameter.y, rotate(p0), rotate(p1), rotate(p2));
         }
     }
-    // DEBUG
-    //if (uv.x > 0.5) {
-        //ivec2 ts = textureSize(curves,0);
-        //float w = float(ts.x);
-        //float h = float(ts.y);
-        ////float green = (float(glyph.count) / 27.0);
-        //float green = float(w) / (3.0 * 27.0);
-        //result = vec4(0.0,h * 0.5,0.0,1.0);
-    //} else {
-        //result = vec4(0.0,0.5,0.0,1.0);
-    //}
-    //return;
 
     if (enableSuperSamplingAntiAliasing) {
         alpha *= 0.5;
     }
 
     alpha = clamp(alpha, 0.0, 1.0);
-    result = color * alpha;
+    result = vec4(color.rgb, color.a * alpha);
 
     if (enableControlPointsVisualization) {
         // Visualize control points.
diff --git a/data/ofxGPUFont/shaders/GL3/font.frag b/data/ofxGPUFont/shaders/GL3/font.frag
index feb844a..5bcf06f 100644
--- a/data/ofxGPUFont/shaders/GL3/font.frag
+++ b/data/ofxGPUFont/shaders/GL3/font.frag
@@ -124,17 +124,13 @@ void main() {
 			alpha += computeCoverage(inverseDiameter.y, rotate(p0), rotate(p1), rotate(p2));
 		}
 	}
-    //vec4 debug = texelFetch(glyphs, int(uv.x * textureSize(glyphs)));
-    //result = vec4(debug.rgb, 1.0);
-
-    //return;
 
 	if (enableSuperSamplingAntiAliasing) {
 		alpha *= 0.5;
 	}
 
 	alpha = clamp(alpha, 0.0, 1.0);
-	result = color * alpha;
+    result = vec4(color.rgb, color.a * alpha);
 
 	if (enableControlPointsVisualization) {
 		// Visualize control points.