Load the text record for reference to anyone who encounters the same problem about android-3d-model-viewer

[zhangwenxiang]

1.Text generation bitmap.
2.Imitate the cube to draw a square for texture
3.At this time, you will encounter the problem of opaque background color, don't worry. Turn on the color mixing channel before drawing the obj, and modify the mixing factor。
GLES20.glEnable(GLES20.GL_BLEND);
GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA);

4. obj color transparency set to 0
   5.Objects that require a transparent background should be drawn last as far as possible. Otherwise there will be problems with the background mapping.

tip: Personal try, if there is a better way, welcome guidance