OpenGL ES 2.0 SL writing out from fragment shader to texture

Question

Hopefully this is a really simple question.

How to write out to a texture attached to framebuffer from within a fragment shader. I assume it is just gl_FragColor, am I suppose to define/use a different variable, like gl_Data[0]?

Frag Shader:

        precision mediump float;
        varying vec2 vTextureCoord;
        uniform sampler2D displayTexture;
        void main() {
          gl_FragColor = texture2D(displayTexture, vTextureCoord);
        }

This question is not how to setup a texture for writing to, just how to write out from within the fragment shader. I just want to make sure I have this piece of the puzzle.

Answer 1

You seem to assume correct. All the drawing code should be the same drawing to render buffer as to an attached texture, even shaders.