Android OpenGL ES2.0 Texture Swapping

Question

First off I am new to OpenGL, but on my phone (Motorola Bionic) the following code works as intended.

GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
GLES20.glBindTe         


        

Answer 1

You're probably hitting some limit of maximum active textures, for example as docs says:

glActivateTexture - The number of texture units is implementation dependent, but must be at least two

Also you might want to check GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS (with glGet).

To debug problem you might want to check for glGetError after each call glActiveTexture/glBindTexture and maybe those glUniform1i.