Added modified directional light shader.

assets/shaders/directionalPerPixelSingleLight/directionalPerPixel_vert.glsl

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2014 Miguel Angel Astor Romero
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Model-view matrix.
+uniform mat4 u_projTrans;
+
+// The world space geometric transformation to apply to this vertex.
+uniform mat4 u_geomTrans;
+
+// Light source position
+uniform vec3 u_lightPos;
+
+// Diffuse light color.
+uniform vec4 u_lightDiffuse;
+
+// Camera world space position.
+uniform vec3 u_cameraPos;
+
+// Vertex color.
+uniform vec4 u_materialDiffuse;
+
+// Vertex position in world coordinates.
+attribute vec4 a_position;
+
+// Vertex normal.
+attribute vec4 a_normal;
+
+// Fragment normal.
+varying vec3 v_normal;
+
+// Diffuse shaded color to pass to the fragment shader.
+varying vec4 v_diffuse;
+
+// The vector from the vertex to the light source.
+varying vec3 v_lightVector;
+
+// The vector from the vertex to the camera.
+varying vec3 v_eyeVector;
+
+// The light vector reflected around the vertex normal.
+varying vec3 v_reflectedVector;
+
+void main(){
+	// Apply the geometric transformation to the original position of the vertex.
+	vec4 transformedPosition = u_geomTrans * a_position;
+
+	// Set the varyings.
+	v_normal = normalize(a_normal.xyz);
+	v_lightVector = normalize(transformedPosition.xyz - u_lightPos.xyz);
+	v_eyeVector = normalize(u_cameraPos.xyz - transformedPosition.xyz);
+	v_reflectedVector = normalize(reflect(-v_lightVector, a_normal.xyz));
+
+	// Diffuse Term.
+	v_diffuse = u_lightDiffuse * u_materialDiffuse * max(dot(a_normal.xyz, v_lightVector), 0.0);
+
+	gl_Position = u_projTrans * transformedPosition;
+}