I tried 0.001 with a light nearby and both devices are showing black textures.

Not to worry, I'll use the original shader since I need multiple light support and since it only fails on Mali.

Here's the log:

10-12 09:39:39.422: E/AndroidRuntime(1567): java.lang.RuntimeException: [ 1350034779427 ] - ERROR: Failed to load and compile fragment shaders!
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.Logger.log(Logger.java:189)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.GLSLShader.loadProgram(GLSLShader.java:764)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.GLSLShader.preInit(GLSLShader.java:276)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.GL20.setShader(GL20.java:336)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.GLRenderer.setShader(GLRenderer.java:510)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.CompiledInstance.render(CompiledInstance.java:159)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.GLRenderer.drawVertexArray(GLRenderer.java:2244)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.World.draw(World.java:1321)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.World.draw(World.java:1083)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.ES2Test.Scene.updateFrame(Scene.java:293)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.ES2Test.Scene.onDrawFrame(Scene.java:365)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at com.threed.jpct.ES2Test.HelloShader$MyRenderer.onDrawFrame(HelloShader.java:206)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1516)
10-12 09:39:39.422: E/AndroidRuntime(1567):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)


Attached are the available functions in the Light class
..by typing sun.

[attachment deleted by admin]

No probs. If you want a glow effect as well you could experiment with a simple transparent plane centered near the front-center of the pumpkin with a 32bit (RGBA) texture that fades out from the middle. Beyond that you would need to use shaders, i.e. if you wanted a fancy glow extruding out of the pumpkin.

I can also post a version that combines offset mapping for the first with normal gouraud shading for all other light sources, if that helps.

If you wouldn't mind posting that version I'll give it a try. As far as I can tell it looks like the problem may be related to shader lighting.

You wont need two pumpkins, 3D modelling programs like blender allow you to select all the vertices and extend them inwards, effectively creating a complete 3D object with both inner and outer walls. Once that is done, apply a white part of the texture to the inner faces.

OpenGL hardware typically have 8 hardware lights you can use. Refer to the "Light" class in jPCT, set it's position to the center of the pumpkin to light it up. You could use shaders but it can be a steep learning curve if you are just starting to use OpenGL.

...Edit: Well actually yes you could use two pumpkins and invert the faces of the inner one and apply a bright texture to it, but you may run into visible artifacts or 'jaggies' at the edges of the objects if they are too close in 3D space.

You could cheat and change the texture of the inside of that pumpkin, make the inside colors pure white so it appears lit up.

Additionally, you could separate the inside and outside of the 3D pumpkin object and setAdditionalLighting(200,200,200) to the inner Object3D. Or perhaps pop a small hardware Light in the center.

Are you still use calcTextureWrapXXX to apply the texture? The tangent vectors are calculated based on the u/v-mapping. Try to find and use a model with proper spherical uv-mapping.

Oops yes you are spot on. Looks perfect now on the Tegra3