1 files changed, 32 insertions, 0 deletions
diff --git a/src/extras/shaders/es2/morphphong.vert b/src/extras/shaders/es2/morphphong.vert
new file mode 100644
index 000000000..d091e87c0
--- /dev/null
+++ b/src/extras/shaders/es2/morphphong.vert
@@ -0,0 +1,32 @@
+attribute vec3 vertexPosition;
+attribute vec3 vertexNormal;
+attribute vec3 vertexPositionTarget;
+attribute vec3 vertexNormalTarget;
+
+varying vec3 worldPosition;
+varying vec3 worldNormal;
+
+uniform mat4 modelMatrix;
+uniform mat3 modelNormalMatrix;
+uniform mat4 modelViewProjection;
+uniform float interpolator;
+
+void main()
+{
+    vec3 morphPos;
+    vec3 morphNormal;
+    if (interpolator > 0.0) {
+        // normalized
+        morphPos = mix(vertexPosition, vertexPositionTarget, interpolator);
+        morphNormal = normalize(mix(vertexNormal, vertexNormalTarget, interpolator));
+    } else {
+        // relative
+        morphPos = vertexPosition + vertexPositionTarget * abs(interpolator);
+        morphNormal = normalize(vertexNormal + vertexNormalTarget * abs(interpolator));
+    }
+
+    worldNormal = normalize( modelNormalMatrix * morphPos );
+    worldPosition = vec3( modelMatrix * vec4( morphPos, 1.0 ) );
+
+    gl_Position = modelViewProjection * vec4( morphPos, 1.0 );
+}