public void begin(GL2ES2 gl) {
if (this.handles == null) {
this.handles = new LineProgramHandles(gl);
}
gl.getGL3().glBindVertexArray(GLUtils.defaultVertexAttributeArray(gl));
gl.glUseProgram(this.handles.program);
gl.glEnableVertexAttribArray(this.handles.inXy);
gl.glEnableVertexAttribArray(this.handles.inFlags);
gl.glEnableVertexAttribArray(this.handles.inMileage);
gl.glEnableVertexAttribArray(this.handles.inRgba);
}
private final void relocateAttribute(GL2ES2 gl, GLArrayData attribute) {
// get new location ..
final String name = attribute.getName();
final int loc = getAttribLocation(gl, name);
attribute.setLocation(loc);
if (0 <= loc) {
if (isVertexAttribArrayEnabled(name)) {
// enable attrib, VBO and pass location/data
gl.glEnableVertexAttribArray(loc);
}
if (attribute.isVBO()) {
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, attribute.getVBOName());
gl.glVertexAttribPointer(attribute);
gl.glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
} else {
gl.glVertexAttribPointer(attribute);
}
}
}
private boolean enableVertexAttribArray(GL2ES2 gl, String name, int location) {
activedAttribEnabledMap.put(name, Boolean.TRUE);
if (0 > location) {
location = getAttribLocation(gl, name);
if (0 > location) {
if (verbose) {
System.err.println(
"ShaderState: glEnableVertexAttribArray failed, no index for: " + name);
if (DEBUG) {
Thread.dumpStack();
}
}
return false;
}
}
if (DEBUG) {
System.err.println("ShaderState: glEnableVertexAttribArray: " + name + ", loc: " + location);
}
gl.glEnableVertexAttribArray(location);
return true;
}