v0.7.4b: Initial LibGDX commit! more details below:

Large sections of game logic are now working through libgdx instead of
android libraries. There is still work to do but this is the first
major step. Big changes include:
- Graphics code is now through LibGDX (except for text rendering)
- Initialization and screen-handling logic is now mostly through LibGDX
- Audio is now through LibGDX
- Input handling is now through LibGDX
- Most misc functions are now through LibGDX

SPD-classes/src/main/java/com/watabou/noosa/NoosaScriptNoLighting.java

@@ -45,22 +45,33 @@ public class NoosaScriptNoLighting extends NoosaScript {
 	}
 
 	private static final String SHADER =
-
-			"uniform mat4 uCamera;" +
-			"uniform mat4 uModel;" +
-			"attribute vec4 aXYZW;" +
-			"attribute vec2 aUV;" +
-			"varying vec2 vUV;" +
-			"void main() {" +
-			"  gl_Position = uCamera * uModel * aXYZW;" +
-			"  vUV = aUV;" +
-			"}" +
-
-			"//\n" +
-
-			"varying mediump vec2 vUV;" +
-			"uniform lowp sampler2D uTex;" +
-			"void main() {" +
-			"  gl_FragColor = texture2D( uTex, vUV );" +
-			"}";
+		
+		//vertex shader
+		"uniform mat4 uCamera;\n" +
+		"uniform mat4 uModel;\n" +
+		"attribute vec4 aXYZW;\n" +
+		"attribute vec2 aUV;\n" +
+		"varying vec2 vUV;\n" +
+		"void main() {\n" +
+		"  gl_Position = uCamera * uModel * aXYZW;\n" +
+		"  vUV = aUV;\n" +
+		"}\n" +
+		
+		//this symbol separates the vertex and fragment shaders (see Script.compile)
+		"//\n" +
+		
+		//fragment shader
+		//preprocessor directives let us define precision on GLES platforms, and ignore it elsewhere
+		"#ifdef GL_ES\n" +
+		"  #define LOW lowp\n" +
+		"  #define MED mediump\n" +
+		"#else\n" +
+		"  #define LOW\n" +
+		"  #define MED\n" +
+		"#endif\n" +
+		"varying MED vec2 vUV;\n" +
+		"uniform LOW sampler2D uTex;\n" +
+		"void main() {\n" +
+		"  gl_FragColor = texture2D( uTex, vUV );\n" +
+		"}\n";
 }