beginning migrate to shaders

add a few submodules
generate C file store with cfs_gen
remove FileLoader/TextureLoader
add initial color shaders for wfobj objects

shaders/wfobj.f.glsl

@@ -0,0 +1,39 @@
+
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
+precision mediump float;
+#endif
+
+uniform vec4 ambient, diffuse, specular;
+uniform float shininess;
+
+varying vec3 pos_i;
+varying vec3 normal_i;
+
+void main(void)
+{
+    vec3 n, lightDir;
+    vec4 color;
+    float NdotL, RdotEye;
+
+    lightDir = normalize(vec3(-0.4, 0, -0.9));
+    color = vec4(0.2, 0.2, 0.2, 1.0) * ambient;  /* ambient light */
+    n = normalize(normal_i);
+
+    NdotL = max(dot(n, -lightDir), 0.0);
+
+    if (NdotL > 0.0)
+    {
+        /* diffuse component */
+        color += diffuse * NdotL;
+        /* specular component */
+        RdotEye = dot(normalize(-pos_i), normalize(reflect(-lightDir, n)));
+        if (RdotEye > 0.0)
+        {
+            color += clamp(specular * pow(RdotEye, shininess), 0.0, 1.0);
+        }
+    }
+
+    gl_FragColor = color;
+}

shaders/wfobj.v.glsl

@@ -0,0 +1,16 @@
+
+uniform mat4 projection;
+uniform mat4 modelview;
+
+attribute vec3 pos;
+attribute vec3 normal;
+
+varying vec3 pos_i;
+varying vec3 normal_i;
+
+void main(void)
+{
+    gl_Position = projection * modelview * vec4(pos, 1);
+    pos_i = gl_Position.xyz;
+    normal_i = normal;
+}