> I have texture data in half float format that I would like to load into textures.
> The call to glTexImage2D fails using GL2.GL_HALF_FLOAT as the type.
> Below is the complete call that I make:
>
>                    gl.glTexImage2D(this.texture_[index].getTarget(),
>                                    0,
>                                    GL2.GL_LUMINANCE16F,
>                                    width,
>                                    height,
>                                    0,
>                                    GL.GL_LUMINANCE,
>                                    GL2.GL_HALF_FLOAT,
>                                    buffer);                  
>
> Calling glGetError afterwards indicates that an invalid enum is being used.
> I checked the enum values and GL2.GL_HALF_FLOAT = 36193 (0x8D61).
> This corresponds to HALF_FLOAT_OES tokens defined in the OES_vertex_half_float
> and OES_texture_float extensions against OpenGL 2.0 ES.
> http://www.khronos.org/registry/gles/extensions/OES/OES_vertex_half_float.txt
> http://www.khronos.org/registry/gles/extensions/OES/OES_texture_float.txt
>
> I believe that the type I want to be using is HALF_FLOAT_ARB which is
> specified in the ARB_half_float_pixel extension (extension specific to using
> half float as pixel data).  The value of this token is 5131 (0x140B).
> http://www.opengl.org/registry/specs/ARB/half_float_pixel.txt

>
> In JOGL, this value is defined by GL2.GL_HALF_APPLE, but when I try to use
> this for the type parameter in glTexImage2D I get the following exception:
>
> Caused by: javax.media.opengl.GLException: type 0x140b/format 0x1909 not
> supported [yet], pls notify the maintainer in case this is our bug.
>         at com.jogamp.opengl.util.GLBuffers.sizeof(GLBuffers.java:505)
>         at jogamp.opengl.gl4.GL4bcImpl.imageSizeInBytes(GL4bcImpl.java:34462)
>         at jogamp.opengl.gl4.GL4bcImpl.glTexImage2D(GL4bcImpl.java:25283)
>
> Inspecting GLBuffers.java, GL2.GL_HALF_APPLE is not in the list of accepted
> types in the sizeof function.