Custom PPSSPP shaders

[nover]

I need some help trying to get the LCD3x filter from "Emulator Shaders" (available on Google Play) into PPSSPP for Android.

The full LCD3x .shader file:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!--
   Author: Gigaherz
   License: Public domain
-->

<shader language="GLSL">
<vertex><![CDATA[
    uniform vec2 rubyTextureSize;
    attribute vec2 aPosition;
    attribute vec2 aTexCoord;
    varying vec2 vTexCoord;
    varying vec2 omega;

    void main() {
        gl_Position = vec4(aPosition, 0.0, 1.0);
        vTexCoord = aTexCoord;
        omega = 3.141592654 * 2.0 * rubyTextureSize;
    }
]]></vertex>

<fragment filter="nearest" output_width="300%" output_height="300%"><![CDATA[
    #ifdef GL_FRAGMENT_PRECISION_HIGH
    precision highp float;
    #else
    precision mediump float;
    #endif
    uniform sampler2D rubyTexture;
    varying vec2 vTexCoord;
    varying vec2 omega;

    /* configuration (higher values mean brighter image but reduced effect depth) */
    const float brighten_scanlines = 16.0;
    const float brighten_lcd = 4.0;

    const vec3 offsets = 3.141592654 * vec3(1.0/2.0,1.0/2.0 - 2.0/3.0,1.0/2.0-4.0/3.0);

    void main() {
        vec2 angle = vTexCoord * omega;

        float yfactor = (brighten_scanlines + sin(angle.y)) / (brighten_scanlines + 1.0);
        vec3 xfactors = (brighten_lcd + sin(angle.x + offsets)) / (brighten_lcd + 1.0);

        gl_FragColor.rgb = yfactor * xfactors * texture2D(rubyTexture, vTexCoord).rgb;
    }
]]></fragment>
</shader>

So my question is, how would I convert that to a .fsh file and a .vsh file? I tried just copying the vertex and fragment sections into separate files but PPSSPP (Android) just gave me a black screen when I selected it.

I've heard about "multipass" shaders not working with PPSSPP. Is this a multipass shader?

Thanks!

P.S. The effect of this shader is to simulate the LCD display of the original console. It's used in the MyOldBoy and MyBoy emulators on Android and looks fantastic - it's probably the "perfect" shader to simulate the original feel of the display.

And attached is a picture of Shantae being emulated on a Game Boy Colour emulator for Android, "MyOldBoy", with the LCD3x filter: