/**
* Gets the location of a shader attribute.<br>
* Uses either the cached value {@link #getCachedAttribLocation(String)} if valid, or the GLSL
* queried via {@link GL2ES2#glGetAttribLocation(int, String)}.<br>
* The location will be cached.
*
* @return -1 if there is no such attribute available, otherwise >= 0
* @throws GLException if no program is attached
* @throws GLException if the program is not linked and no location was cached.
* @see #getCachedAttribLocation(String)
* @see #bindAttribLocation(GL2ES2, int, GLArrayData)
* @see #bindAttribLocation(GL2ES2, int, String)
* @see GL2ES2#glGetAttribLocation(int, String)
*/
public int getAttribLocation(GL2ES2 gl, String name) {
if (null == shaderProgram) throw new GLException("No program is attached");
int location = getCachedAttribLocation(name);
if (0 > location) {
if (!shaderProgram.linked()) throw new GLException("Program is not linked");
location = gl.glGetAttribLocation(shaderProgram.program(), name);
if (0 <= location) {
Integer idx = new Integer(location);
activeAttribLocationMap.put(name, idx);
if (DEBUG) {
System.err.println("ShaderState: glGetAttribLocation: " + name + ", loc: " + location);
}
} else if (verbose) {
System.err.println(
"ShaderState: glGetAttribLocation failed, no location for: "
+ name
+ ", loc: "
+ location);
if (DEBUG) {
Thread.dumpStack();
}
}
}
return location;
}
public void init(GLAutoDrawable drawable) {
drawable.setAutoSwapBufferMode(false);
GL2ES2 gl = drawable.getGL().getGL2ES2();
System.err.println("Entering initialization");
System.err.println("GL_VERSION=" + gl.glGetString(gl.GL_VERSION));
System.err.println("GL_EXTENSIONS:");
System.err.println(" " + gl.glGetString(gl.GL_EXTENSIONS));
pmvMatrix = new PMVMatrix();
pmod.initShaderState(gl);
st = ShaderState.getCurrent();
// Push the 1st uniform down the path
st.glUseProgram(gl, true);
pmvMatrix.glMatrixMode(pmvMatrix.GL_PROJECTION);
pmvMatrix.glLoadIdentity();
pmvMatrix.glMatrixMode(pmvMatrix.GL_MODELVIEW);
pmvMatrix.glLoadIdentity();
if (!st.glUniform(gl, new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf()))) {
throw new GLException("Error setting PMVMatrix in shader: " + st);
}
// OpenGL Render Settings
gl.glClearColor(0, 0, 0, 1);
gl.glEnable(GL2ES2.GL_DEPTH_TEST);
st.glUseProgram(gl, false);
// Let's show the completed shader state ..
System.out.println(st);
}
/** Returns true if a hader compiler is available, otherwise false. */
public static boolean isShaderCompilerAvailable(final GL _gl) {
final GL2ES2 gl = _gl.getGL2ES2();
final ProfileInformation info = getProfileInformation(gl);
if (null == info.shaderCompilerAvailable) {
if (gl.isGLES2()) {
boolean queryOK = false;
try {
final byte[] param = new byte[1];
gl.glGetBooleanv(GL2ES2.GL_SHADER_COMPILER, param, 0);
final int err = gl.glGetError();
boolean v = GL.GL_NO_ERROR == err && param[0] != (byte) 0x00;
if (!v) {
final Set<Integer> bfs = getShaderBinaryFormats(gl);
if (bfs.size() == 0) {
// no supported binary formats, hence a compiler must be available!
v = true;
}
}
info.shaderCompilerAvailable = Boolean.valueOf(v);
queryOK = true;
} catch (final GLException gle) {
System.err.println("Caught exception on thread " + Thread.currentThread().getName());
gle.printStackTrace();
}
if (!queryOK) {
info.shaderCompilerAvailable = Boolean.valueOf(true);
}
} else if (gl.isGL2ES2()) {
info.shaderCompilerAvailable = new Boolean(true);
} else {
throw new GLException("Invalid OpenGL profile");
}
}
return info.shaderCompilerAvailable.booleanValue();
}
/**
* If supported, queries the natively supported shader binary formats using {@link
* GL2ES2#GL_NUM_SHADER_BINARY_FORMATS} and {@link GL2ES2#GL_SHADER_BINARY_FORMATS} via {@link
* GL2ES2#glGetIntegerv(int, int[], int)}.
*/
public static Set<Integer> getShaderBinaryFormats(final GL _gl) {
final GL2ES2 gl = _gl.getGL2ES2();
final ProfileInformation info = getProfileInformation(gl);
if (null == info.shaderBinaryFormats) {
info.shaderBinaryFormats = new HashSet<Integer>();
if (gl.isGLES2Compatible()) {
try {
final int[] param = new int[1];
gl.glGetIntegerv(GL2ES2.GL_NUM_SHADER_BINARY_FORMATS, param, 0);
final int err = gl.glGetError();
final int numFormats = GL.GL_NO_ERROR == err ? param[0] : 0;
if (numFormats > 0) {
final int[] formats = new int[numFormats];
gl.glGetIntegerv(GL2ES2.GL_SHADER_BINARY_FORMATS, formats, 0);
for (int i = 0; i < numFormats; i++) {
info.shaderBinaryFormats.add(Integer.valueOf(formats[i]));
}
}
} catch (final GLException gle) {
System.err.println("Caught exception on thread " + Thread.currentThread().getName());
gle.printStackTrace();
}
}
}
return info.shaderBinaryFormats;
}
public static void shaderSource(final GL _gl, final int shader, final CharSequence[] source) {
final GL2ES2 gl = _gl.getGL2ES2();
if (!isShaderCompilerAvailable(_gl)) {
throw new GLException("No compiler is available");
}
final int count = (null != source) ? source.length : 0;
if (count == 0) {
throw new GLException("No sources specified");
}
final IntBuffer lengths = Buffers.newDirectIntBuffer(count);
for (int i = 0; i < count; i++) {
lengths.put(i, source[i].length());
}
if (source instanceof String[]) {
// rare case ..
gl.glShaderSource(shader, count, (String[]) source, lengths);
} else {
final String[] tmp = new String[source.length];
for (int i = source.length - 1; i >= 0; i--) {
final CharSequence csq = source[i];
if (csq instanceof String) {
// if ShaderCode.create(.. mutableStringBuilder == false )
tmp[i] = (String) csq;
} else {
// if ShaderCode.create(.. mutableStringBuilder == true )
tmp[i] = source[i].toString();
}
}
gl.glShaderSource(shader, count, tmp, lengths);
}
}
public static boolean createAndLoadShader(
final GL _gl,
final IntBuffer shader,
final int shaderType,
final int binFormat,
final java.nio.Buffer bin,
final PrintStream verboseOut) {
final GL2ES2 gl = _gl.getGL2ES2();
int err = gl.glGetError(); // flush previous errors ..
if (err != GL.GL_NO_ERROR && null != verboseOut) {
verboseOut.println("createAndLoadShader: Pre GL Error: 0x" + Integer.toHexString(err));
}
createShader(gl, shaderType, shader);
err = gl.glGetError();
if (err != GL.GL_NO_ERROR) {
throw new GLException(
"createAndLoadShader: CreateShader failed, GL Error: 0x" + Integer.toHexString(err));
}
shaderBinary(gl, shader, binFormat, bin);
err = gl.glGetError();
if (err != GL.GL_NO_ERROR && null != verboseOut) {
verboseOut.println(
"createAndLoadShader: ShaderBinary failed, GL Error: 0x" + Integer.toHexString(err));
}
return err == GL.GL_NO_ERROR;
}
public static boolean isProgramStatusValid(final GL _gl, final int programObj, final int name) {
final GL2ES2 gl = _gl.getGL2ES2();
final int[] ires = new int[1];
gl.glGetProgramiv(programObj, name, ires, 0);
return ires[0] == 1;
}
public final boolean detachFrom(GL2ES2 gl) {
RenderState _rs = (RenderState) gl.getContext().getAttachedObject(RenderState.class.getName());
if (_rs == this) {
gl.getContext().detachObject(RenderState.class.getName());
return true;
}
return false;
}
@Override
public void reshape(
final GLAutoDrawable glad, final int x, final int y, final int width, final int height) {
final GL2ES2 gl = glad.getGL().getGL2ES2();
if (-1 != swapInterval) {
gl.setSwapInterval(swapInterval);
}
reshapeImpl(gl, x, y, width, height, width, height);
}
public static boolean isShaderStatusValid(
final GL _gl, final int shaderObj, final int name, final PrintStream verboseOut) {
final GL2ES2 gl = _gl.getGL2ES2();
final int[] ires = new int[1];
gl.glGetShaderiv(shaderObj, name, ires, 0);
final boolean res = ires[0] == 1;
if (!res && null != verboseOut) {
verboseOut.println("Shader status invalid: " + getShaderInfoLog(gl, shaderObj));
}
return res;
}
@Override
public void dispose(final GLAutoDrawable glad) {
System.err.println(
Thread.currentThread() + " RedSquareES2.dispose: tileRendererInUse " + tileRendererInUse);
final GL2ES2 gl = glad.getGL().getGL2ES2();
if (!gl.hasGLSL()) {
return;
}
st.destroy(gl);
st = null;
pmvMatrix = null;
System.err.println(Thread.currentThread() + " RedSquareES2.dispose FIN");
}
@Override
public void reshapeTile(
final TileRendererBase tr,
final int tileX,
final int tileY,
final int tileWidth,
final int tileHeight,
final int imageWidth,
final int imageHeight) {
final GL2ES2 gl = tr.getAttachedDrawable().getGL().getGL2ES2();
gl.setSwapInterval(0);
reshapeImpl(gl, tileX, tileY, tileWidth, tileHeight, imageWidth, imageHeight);
}
public static String getProgramInfoLog(final GL _gl, final int programObj) {
final GL2ES2 gl = _gl.getGL2ES2();
final int[] infoLogLength = new int[1];
gl.glGetProgramiv(programObj, GL2ES2.GL_INFO_LOG_LENGTH, infoLogLength, 0);
if (infoLogLength[0] == 0) {
return "(no info log)";
}
final int[] charsWritten = new int[1];
final byte[] infoLogBytes = new byte[infoLogLength[0]];
gl.glGetProgramInfoLog(programObj, infoLogLength[0], charsWritten, 0, infoLogBytes, 0);
return new String(infoLogBytes, 0, charsWritten[0]);
}
/**
* Replace a shader in a program and re-links the program.
*
* @param gl
* @param oldShader the to be replace Shader
* @param newShader the new ShaderCode
* @param verboseOut the optional verbose output stream
* @return true if all steps are valid, shader compilation, attachment and linking; otherwise
* false.
* @see ShaderState#glEnableVertexAttribArray
* @see ShaderState#glDisableVertexAttribArray
* @see ShaderState#glVertexAttribPointer
* @see ShaderState#getVertexAttribPointer
* @see ShaderState#glReleaseAllVertexAttributes
* @see ShaderState#glResetAllVertexAttributes
* @see ShaderState#glResetAllVertexAttributes
* @see ShaderState#glResetAllVertexAttributes
*/
public synchronized boolean replaceShader(
GL2ES2 gl, ShaderCode oldShader, ShaderCode newShader, PrintStream verboseOut) {
if (!init(gl) || !newShader.compile(gl, verboseOut)) {
return false;
}
boolean shaderWasInUse = inUse();
if (shaderWasInUse) {
useProgram(gl, false);
}
if (null != oldShader && allShaderCode.remove(oldShader)) {
if (attachedShaderCode.remove(oldShader)) {
ShaderUtil.detachShader(gl, shaderProgram, oldShader.shader());
}
}
add(newShader);
if (attachedShaderCode.add(newShader)) {
ShaderUtil.attachShader(gl, shaderProgram, newShader.shader());
}
gl.glLinkProgram(shaderProgram);
programLinked = ShaderUtil.isProgramLinkStatusValid(gl, shaderProgram, System.err);
if (programLinked && shaderWasInUse) {
useProgram(gl, true);
}
return programLinked;
}
/**
* Performs {@link GL2ES2#glValidateProgram(int)}
*
* <p>One shall only call this method while debugging and only if all required resources by the
* shader are set.
*
* <p>Note: It is possible that a working shader program will fail validation. This has been
* experienced on NVidia APX2500 and Tegra2.
*
* @see GL2ES2#glValidateProgram(int)
*/
public static boolean isProgramExecStatusValid(
final GL _gl, final int programObj, final PrintStream verboseOut) {
final GL2ES2 gl = _gl.getGL2ES2();
gl.glValidateProgram(programObj);
if (!isProgramStatusValid(gl, programObj, GL2ES2.GL_VALIDATE_STATUS)) {
if (null != verboseOut) {
verboseOut.println(
"Program validation failed: "
+ programObj
+ "\n\t"
+ getProgramInfoLog(gl, programObj));
}
return false;
}
return true;
}
/**
* Binds a shader attribute to a location. Multiple names can be bound to one location. The value
* will be cached and can be retrieved via {@link #getCachedAttribLocation(String)} before or
* after linking.
*
* @throws GLException if no program is attached
* @throws GLException if the program is already linked
* @see javax.media.opengl.GL2ES2#glBindAttribLocation(int, int, String)
* @see #getAttribLocation(GL2ES2, String)
* @see #getCachedAttribLocation(String)
*/
public void bindAttribLocation(GL2ES2 gl, int location, String name) {
if (null == shaderProgram) throw new GLException("No program is attached");
if (shaderProgram.linked()) throw new GLException("Program is already linked");
final Integer loc = new Integer(location);
activeAttribLocationMap.put(name, loc);
gl.glBindAttribLocation(shaderProgram.program(), location, name);
}
public void display(GLAutoDrawable glad) {
final GL2ES2 gl = glad.getGL().getGL2ES2();
if (multisample) {
gl.glEnable(GL.GL_MULTISAMPLE);
}
gl.glClearColor(0, 0, 0, 0);
// gl.glEnable(GL.GL_DEPTH_TEST);
// gl.glDepthFunc(GL.GL_LESS);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
st.useProgram(gl, true);
immModeSink.draw(gl, true);
st.useProgram(gl, false);
}
private void draw(GL2ES2 gl) {
// gl.glClearColor(0.5f, 0.1f, 0.1f, 1);
// gl.glClear(GL2ES2.GL_COLOR_BUFFER_BIT);
shaderState.useProgram(gl, true);
time.setData((System.currentTimeMillis() - millisOffset) / 1000.0f);
shaderState.uniform(gl, time);
vertices.enableBuffer(gl, true);
gl.glDrawArrays(GL2ES2.GL_TRIANGLE_STRIP, 0, 4);
vertices.enableBuffer(gl, false);
shaderState.useProgram(gl, false);
// Compute current framerate and printout.
frameCount++;
fcount += 1;
int m = (int) (System.currentTimeMillis() - millisOffset);
if (m - lastm > 1000 * fint) {
frameRate = (float) (fcount) / fint;
fcount = 0;
lastm = m;
}
if (frameCount % TARGET_FPS == 0) {
System.out.println("FrameCount: " + frameCount + " - " + "FrameRate: " + frameRate);
}
}
private void setup(GL2ES2 gl) {
if (60 < TARGET_FPS) {
// Disables vsync
gl.setSwapInterval(0);
}
glu = new GLU();
vertShader =
ShaderCode.create(
gl,
GL2ES2.GL_VERTEX_SHADER,
LandscapeES2.class,
"shader",
"shader/bin",
"landscape",
true);
fragShader =
ShaderCode.create(
gl,
GL2ES2.GL_FRAGMENT_SHADER,
LandscapeES2.class,
"shader",
"shader/bin",
"landscape",
true);
vertShader.defaultShaderCustomization(gl, true, true);
fragShader.defaultShaderCustomization(gl, true, true);
shaderProg = new ShaderProgram();
shaderProg.add(gl, vertShader, System.err);
shaderProg.add(gl, fragShader, System.err);
shaderState = new ShaderState();
shaderState.attachShaderProgram(gl, shaderProg, true);
resolution =
new GLUniformData("iResolution", 3, FloatBuffer.wrap(new float[] {width, height, 0}));
shaderState.ownUniform(resolution);
shaderState.uniform(gl, resolution);
time = new GLUniformData("iGlobalTime", 0.0f);
shaderState.ownUniform(time);
vertices =
GLArrayDataServer.createGLSL("inVertex", 2, GL.GL_FLOAT, false, 4, GL.GL_STATIC_DRAW);
vertices.putf(-1.0f);
vertices.putf(-1.0f);
vertices.putf(+1.0f);
vertices.putf(-1.0f);
vertices.putf(-1.0f);
vertices.putf(+1.0f);
vertices.putf(+1.0f);
vertices.putf(+1.0f);
vertices.seal(gl, true);
shaderState.ownAttribute(vertices, true);
shaderState.useProgram(gl, false);
doneSetup = true;
}
public static boolean isProgramLinkStatusValid(
final GL _gl, final int programObj, final PrintStream verboseOut) {
final GL2ES2 gl = _gl.getGL2ES2();
if (!gl.glIsProgram(programObj)) {
if (null != verboseOut) {
verboseOut.println("Program name invalid: " + programObj);
}
return false;
}
if (!isProgramStatusValid(gl, programObj, GL2ES2.GL_LINK_STATUS)) {
if (null != verboseOut) {
verboseOut.println(
"Program link failed: " + programObj + "\n\t" + getProgramInfoLog(gl, programObj));
}
return false;
}
return true;
}
public static void shaderBinary(
final GL _gl, final IntBuffer shaders, final int binFormat, final java.nio.Buffer bin) {
final GL2ES2 gl = _gl.getGL2ES2();
if (getShaderBinaryFormats(gl).size() <= 0) {
throw new GLException("No binary formats are supported");
}
final int shaderNum = shaders.remaining();
if (shaderNum <= 0) {
throw new GLException("No shaders specified");
}
if (null == bin) {
throw new GLException("Null shader binary");
}
final int binLength = bin.remaining();
if (0 >= binLength) {
throw new GLException("Empty shader binary (remaining == 0)");
}
gl.glShaderBinary(shaderNum, shaders, binFormat, bin, binLength);
}
/**
* Disables all vertex attribute arrays.
*
* <p>Their enabled stated will be removed from this state only if 'removeFromState' is true.
*
* <p>This method purpose is more for debugging.
*
* @see #glEnableVertexAttribArray
* @see #glDisableVertexAttribArray
* @see #glVertexAttribPointer
* @see #getVertexAttribPointer
* @see #glReleaseAllVertexAttributes
* @see #glResetAllVertexAttributes
* @see #glResetAllVertexAttributes
* @see ShaderProgram#glReplaceShader
*/
public void disableAllVertexAttributeArrays(GL2ES2 gl, boolean removeFromState) {
for (Iterator<String> iter = activedAttribEnabledMap.keySet().iterator(); iter.hasNext(); ) {
final String name = iter.next();
if (removeFromState) {
activedAttribEnabledMap.remove(name);
}
final int index = getAttribLocation(gl, name);
if (0 <= index) {
gl.glDisableVertexAttribArray(index);
}
}
}
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);
}
}
}
public void setStyle(GL2ES2 gl, LineStyle style) {
gl.glUniform1f(this.handles.LINE_THICKNESS_PX, style.thickness_PX);
gl.glUniform1f(this.handles.FEATHER_THICKNESS_PX, style.feather_PX);
gl.glUniform1i(this.handles.JOIN_TYPE, style.joinType.value);
gl.glUniform1f(this.handles.MITER_LIMIT, style.miterLimit);
if (style.stippleEnable) {
gl.glUniform1i(this.handles.STIPPLE_ENABLE, 1);
gl.glUniform1f(this.handles.STIPPLE_SCALE, style.stippleScale);
gl.glUniform1i(this.handles.STIPPLE_PATTERN, style.stipplePattern);
} else {
gl.glUniform1i(this.handles.STIPPLE_ENABLE, 0);
}
}
public synchronized void useProgram(GL2ES2 gl, boolean on) {
if (!programLinked) {
throw new GLException("Program is not linked");
}
if (programInUse == on) {
return;
}
if (0 == shaderProgram) {
on = false;
}
gl.glUseProgram(on ? shaderProgram : 0);
programInUse = on;
}
public void end(GL2ES2 gl) {
gl.glDisableVertexAttribArray(this.handles.inXy);
gl.glDisableVertexAttribArray(this.handles.inFlags);
gl.glDisableVertexAttribArray(this.handles.inMileage);
gl.glDisableVertexAttribArray(this.handles.inRgba);
gl.glUseProgram(0);
gl.getGL3().glBindVertexArray(0);
}
/**
* Set the {@link GLArrayData} vertex attribute data.
*
* <p>This method uses the {@link GLArrayData}'s location if set. If data location is unset it
* will be retrieved via {@link #getAttribLocation(GL2ES2, GLArrayData)}, set and cached in this
* state.
*
* @return false, if the location could not be determined, otherwise true
* @throws GLException if no program is attached
* @throws GLException if the program is not linked and no location was cached.
* @see #glEnableVertexAttribArray
* @see #glDisableVertexAttribArray
* @see #glVertexAttribPointer
* @see #getVertexAttribPointer
*/
public boolean vertexAttribPointer(GL2ES2 gl, GLArrayData data) {
int location = data.getLocation();
if (0 > location) {
location = getAttribLocation(gl, data);
}
if (0 <= location) {
// only pass the data, if the attribute exists in the current shader
if (DEBUG) {
System.err.println("ShaderState: glVertexAttribPointer: " + data);
}
gl.glVertexAttribPointer(data);
return true;
}
return false;
}
public static boolean createAndCompileShader(
final GL _gl,
final IntBuffer shader,
final int shaderType,
final CharSequence[][] sources,
final PrintStream verboseOut) {
final GL2ES2 gl = _gl.getGL2ES2();
int err = gl.glGetError(); // flush previous errors ..
if (err != GL.GL_NO_ERROR && null != verboseOut) {
verboseOut.println("createAndCompileShader: Pre GL Error: 0x" + Integer.toHexString(err));
}
createShader(gl, shaderType, shader);
err = gl.glGetError();
if (err != GL.GL_NO_ERROR) {
throw new GLException(
"createAndCompileShader: CreateShader failed, GL Error: 0x" + Integer.toHexString(err));
}
shaderSource(gl, shader, sources);
err = gl.glGetError();
if (err != GL.GL_NO_ERROR) {
throw new GLException(
"createAndCompileShader: ShaderSource failed, GL Error: 0x" + Integer.toHexString(err));
}
compileShader(gl, shader);
err = gl.glGetError();
if (err != GL.GL_NO_ERROR && null != verboseOut) {
verboseOut.println(
"createAndCompileShader: CompileShader failed, GL Error: 0x" + Integer.toHexString(err));
}
return isShaderStatusValid(gl, shader, GL2ES2.GL_COMPILE_STATUS, verboseOut)
&& err == GL.GL_NO_ERROR;
}
/**
* Set the uniform data.
*
* <p>Even if the uniform is not found in the current shader, it is stored in this state.
*
* @param data the GLUniforms's name must match the uniform one, it's index will be set with the
* uniforms's location, if found.
* @return false, if the name is not found, otherwise true
* @throws GLException if the program is not in use
* @see #glGetUniformLocation
* @see javax.media.opengl.GL2ES2#glGetUniformLocation
* @see javax.media.opengl.GL2ES2#glUniform
* @see #getUniformLocation
* @see ShaderProgram#glReplaceShader
*/
public boolean uniform(GL2ES2 gl, GLUniformData data) {
if (!shaderProgram.inUse()) throw new GLException("Program is not in use");
int location = data.getLocation();
if (0 > location) {
location = getUniformLocation(gl, data);
}
if (0 <= location) {
// only pass the data, if the uniform exists in the current shader
if (DEBUG) {
System.err.println("ShaderState: glUniform: " + data);
}
gl.glUniform(data);
}
return true;
}
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);
}