Posted by JimmyCai on Mar 13, 2013; 11:14am
URL: https://forum.jogamp.org/GLCanvas-s-mouseDragged-problem-tp4028590p4028608.html

Thanks。

Now, I hava a new problem, can I draw some lines or other things after gl.glDrawPixels().

I try as below, but it did't work.

                gl.glDrawPixels(tex.getWidth(), tex.getHeight(), GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, tex.getByteBuffer());
               
                gl.glColor3f(0.0f, 1.0f, 0.0f);
                gl.glBegin(GL2.GL_QUADS);
                gl.glVertex2f(-1.0f, -1.0f);
                gl.glVertex2f(-1.0f, 1.0f);
                gl.glVertex2f(1.0f, 1.0f);
                gl.glVertex2f(1.0f, -1.0f);
                gl.glEnd();