Modify Program 2.5 to include the error-checking modules shown in Program 2.3. After you have that working, try inserting various errors into the shaders and observing both the resulting behavior and the error messages generated.

Program 2.3

Program 2.5

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import com.jogamp.opengl.glu.GLU; private void printShaderLog(int shader) { GL4 gl= (GL4) GLContext.getCurrentGL(); int[] len = new int[1]; int[] chWrittn = new int[1]; byte[] log = null; // determine the length of the shader compilation log gl.gl GetShaderiv(shader, GL_INFO_LOG_LENGTH, len, 0); if (len[0] > 0) { log = new byte[len[0]]; gl.glGetShaderInfoLog(shader, len[0], chWrittn, 0, log, 0); System.out.println("Shader Info Log: "); for (int i= 0; i