Shaders: use location 1 for texture coordinates and location 2 for normals.

src/Shaders/Phong.h

@@ -59,7 +59,7 @@ myDiffuseTexture.bind(Shaders::Phong::DiffuseTextureLayer);
 class MAGNUM_SHADERS_EXPORT Phong: public AbstractShaderProgram {
     public:
         typedef Attribute<0, Vector3> Position; /**< @brief Vertex position */
-        typedef Attribute<1, Vector3> Normal;   /**< @brief Normal direction */
+        typedef Attribute<2, Vector3> Normal;   /**< @brief Normal direction */
 
         /**
          * @brief Texture coordinates
@@ -67,7 +67,7 @@ class MAGNUM_SHADERS_EXPORT Phong: public AbstractShaderProgram {
          * Used only if one of @ref Flag::AmbientTexture, @ref Flag::DiffuseTexture
          * or @ref Flag::SpecularTexture is set.
          */
-        typedef Attribute<2, Vector2> TextureCoordinates;
+        typedef Attribute<1, Vector2> TextureCoordinates;
 
         enum: Int {
             /**

src/Shaders/Phong.vert

@@ -41,7 +41,7 @@ uniform highp vec3 light;
 
 #ifdef EXPLICIT_ATTRIB_LOCATION
 layout(location = 0) in highp vec4 position;
-layout(location = 1) in mediump vec3 normal;
+layout(location = 2) in mediump vec3 normal;
 #else
 in highp vec4 position;
 in mediump vec3 normal;
@@ -49,7 +49,7 @@ in mediump vec3 normal;
 
 #ifdef TEXTURED
 #ifdef EXPLICIT_ATTRIB_LOCATION
-layout(location = 2) in mediump vec2 textureCoords;
+layout(location = 1) in mediump vec2 textureCoords;
 #else
 in mediump vec2 textureCoords;
 #endif