setup shader files

android/assets/shaders/default_frag.glsl

@@ -0,0 +1,16 @@
+#ifdef GL_ES
+#define LOWP lowp
+    precision mediump float;
+#else
+    #define LOWP
+#endif
+
+varying LOWP vec4 v_color;
+varying vec2 v_texCoords;
+
+uniform sampler2D u_texture;
+
+void main()
+{
+    gl_FragColor = v_color * texture2D(u_texture, v_texCoords);
+}

android/assets/shaders/default_vertex.glsl

@@ -0,0 +1,16 @@
+attribute vec4 a_position;
+attribute vec4 a_color;
+attribute vec2 a_texCoord;
+
+uniform mat4 u_projTrans;
+
+varying vec4 v_color;
+varying vec2 v_texCoords;
+
+void main()
+{
+    v_color = a_color;
+    v_color.a = v_color.a * (256.0/255.0);
+    v_texCoords = a_texCoord + 0;
+    gl_Position =  u_projTrans * a_position;
+}

android/assets/shaders/retro.glsl

@@ -1,4 +0,0 @@
-void main()
-{
-    gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
-}