java - Android problem drawing a bitmap with opengl es -

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i'm using https://github.com/markfguerra/glwallpaperservice/ make android live wallpaper. i'm trying load png file fullscreen background, black screen.

i've searched few days still haven't found out problem. i'm doing following:

public void onsurfacecreated(gl10 gl, eglconfig config) {         gl.glenable(gl10.gl_texture_2d);         gl.gltexparameterf(gl10.gl_texture_2d, gl10.gl_texture_min_filter, gl10.gl_linear);         gl.gltexparameterf(gl10.gl_texture_2d, gl10.gl_texture_mag_filter, gl10.gl_linear); }

and every frame:

public void ondrawframe(gl10 gl) {         bitmap bitmap = bitmapfactory.decoderesource(context.getresources(), r.drawable.target00074);         int[] textures = new int[1];         gl.glgentextures(1, textures, 0);         gl.glbindtexture(gl10.gl_texture_2d, textures[0]);         glutils.teximage2d(gl10.gl_texture_2d, 0, bitmap, 0);  }

i recommend dive opengl basics don't seem know doing. screen black because uploading texture (something should @ initialization instead of every frame) , not drawing anything. need define arrays defining vertex , texture positions start. refer http://blog.jayway.com/2009/12/04/opengl-es-tutorial-for-android-%e2%80%93-part-ii-building-a-polygon/

as fullscreen background, create single polygon texture


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