diff --git a/shaders/gles2/common.inc.glsl b/shaders/gles2/common.inc.glsl
index 7030e48e..1e2fc3b0 100644
--- a/shaders/gles2/common.inc.glsl
+++ b/shaders/gles2/common.inc.glsl
@@ -240,11 +240,10 @@ bool computeECAAQuadPosition(out vec2 outPosition,
                              mat4 globalTransform,
                              vec4 hints,
                              vec4 bounds,
-                             float leftNormalAngle,
-                             float rightNormalAngle,
+                             vec2 normalAngles,
                              vec2 emboldenAmount) {
     leftPosition = computeECAAPosition(leftPosition,
-                                       leftNormalAngle,
+                                       normalAngles.x,
                                        emboldenAmount,
                                        hints,
                                        localTransformST,
@@ -252,7 +251,7 @@ bool computeECAAQuadPosition(out vec2 outPosition,
                                        globalTransform,
                                        framebufferSize);
     rightPosition = computeECAAPosition(rightPosition,
-                                        rightNormalAngle,
+                                        normalAngles.y,
                                         emboldenAmount,
                                         hints,
                                         localTransformST,
diff --git a/shaders/gles2/ecaa-curve.vs.glsl b/shaders/gles2/ecaa-curve.vs.glsl
index b0c6f6bc..9beb5098 100644
--- a/shaders/gles2/ecaa-curve.vs.glsl
+++ b/shaders/gles2/ecaa-curve.vs.glsl
@@ -37,9 +37,8 @@ void main() {
     vec2 controlPointPosition = aControlPointPosition;
     vec2 rightPosition = aRightPosition;
     int pathID = int(aPathID);
-    float leftNormalAngle = aNormalAngles.x;
+    vec2 leftRightNormalAngles = aNormalAngles.xz;
     float controlPointNormalAngle = aNormalAngles.y;
-    float rightNormalAngle = aNormalAngles.z;
 
     vec2 pathTransformExt;
     vec4 pathTransformST = fetchPathAffineTransform(pathTransformExt,
@@ -64,8 +63,7 @@ void main() {
                                 uTransform,
                                 uHints,
                                 bounds,
-                                leftNormalAngle,
-                                rightNormalAngle,
+                                leftRightNormalAngles,
                                 uEmboldenAmount)) {
         controlPointPosition = computeECAAPosition(controlPointPosition,
                                                    controlPointNormalAngle,
diff --git a/shaders/gles2/ecaa-line.vs.glsl b/shaders/gles2/ecaa-line.vs.glsl
index 3fe2357d..2b704bf0 100644
--- a/shaders/gles2/ecaa-line.vs.glsl
+++ b/shaders/gles2/ecaa-line.vs.glsl
@@ -35,8 +35,7 @@ void main() {
     vec2 leftPosition = aLeftPosition;
     vec2 rightPosition = aRightPosition;
     int pathID = int(aPathID);
-    float leftNormalAngle = aLeftNormalAngle;
-    float rightNormalAngle = aRightNormalAngle;
+    vec2 leftRightNormalAngles = vec2(aLeftNormalAngle, aRightNormalAngle);
 
     vec2 pathTransformExt;
     vec4 pathTransformST = fetchPathAffineTransform(pathTransformExt,
@@ -61,8 +60,7 @@ void main() {
                             uTransform,
                             uHints,
                             bounds,
-                            leftNormalAngle,
-                            rightNormalAngle,
+                            leftRightNormalAngles,
                             uEmboldenAmount);
 
     float depth = convertPathIndexToViewportDepthValue(pathID);