I have been trying to get the perspective demo working on my Android device (Huawei Ascend G300 U8815) but it won't work when lights() are enabled. I think this is the same/similar unresolved problem posted under Android with light.

I changed the size(640, 360, P3D) call to instead fill the screen:

1. size(displayWidth, displayHeight, P3D);

but apart from that, the code i'm using is identical to the java demo linked above.

If i comment out the lights() call in the draw() method, it works fine (though no lighting effects of course). With the lights() call left in, i get the following stack trace:

1. Smooth is not supported by this hardware (or driver)
2. FATAL EXCEPTION: GLThread 21651
3. java.lang.RuntimeException: Cannot link shader program:
4. --From Fragment Shader:
5. --From Vertex Shader:
6.     at processing.core.PGraphics.showException(PGraphics.java:5426)
7.     at processing.opengl.PShader.init(PShader.java:745)
8.     at processing.opengl.PShader.getAttributeLoc(PShader.java:393)
9.     at processing.opengl.PGraphicsOpenGL$LightShader.loadAttributes(Unknown Source)
10.     at processing.opengl.PGraphicsOpenGL.getPolyShader(Unknown Source)
11.     at processing.opengl.PGraphicsOpenGL.flushPolys(Unknown Source)
12.     at processing.opengl.PGraphicsOpenGL.flush(Unknown Source)
13.     at processing.opengl.PGraphicsOpenGL.endDraw(Unknown Source)
14.     at processing.core.PApplet.handleDraw(Unknown Source)
15.     at processing.opengl.PGL$AndroidRenderer.onDrawFrame(Unknown Source)
16.     at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1463)
17.     at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1217)

ie it is throwing an exception with message "Cannot link shader program" from PShader::init() line 754:

1.         pgl.getProgramiv(glProgram, PGL.LINK_STATUS, intBuffer);
2.         boolean linked = intBuffer.get(0) == 0 ? false : true;
3.         if (!linked) {
4.           PGraphics.showException("Cannot link shader program:\n" +
5.                                   pgl.getProgramInfoLog(glProgram));        }