public void setOrthographicView(int w, int h) {
gl.glViewport(0, 0, w, h);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluOrtho2D(0.0, w, 0.0, h);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
public synchronized void bind(GL gl) {
combine();
if (id < 0) id = VisUtil.allocateID();
int b[] = blocks.get(0);
// the back-end special cases VBO_TYPE_COLOR, and uses gltype = unsigned byte.
gl.glColor(Color.white);
gl.gldBind(GL.VBO_TYPE_COLOR, id, b.length, 4, b);
}
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 GLState(GL gl) {
if (INSTANCES_COUNT == 0) {
GLState.gl = gl;
glTextureObjects = new HashSet<Integer>();
glVertexBuffers = new HashSet<Integer>();
glFrameBuffers = new HashSet<Integer>();
glRenderBuffers = new HashSet<Integer>();
glslPrograms = new HashSet<Integer>();
glslShaders = new HashSet<Integer>();
cgContexts = new HashSet<Object>();
cgPrograms = new HashSet<Object>();
cgEffects = new HashSet<Object>();
getVersionNumbers();
getAvailableExtensions();
int[] val = {0};
gl.glGetIntegerv(GL.GL_MAX_COLOR_ATTACHMENTS_EXT, val, 0);
glMaxColorAttach = val[0];
glu = new GLU();
FBO = new GLFramebufferObject(gl);
fboStack = new Stack<GLFramebufferObject>();
destTexStack = new Stack<GLTexture[]>();
screenFBO = new GLFramebufferObject(gl, true);
currentFBO = screenFBO;
emptyDestTex = new GLTexture[0];
currentDestTex = emptyDestTex;
singleFBO = false;
}
INSTANCES_COUNT++;
}
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;
}
/** 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 void clearColorBuffer(int color) {
float r, g, b, a;
int ir, ig, ib, ia;
ia = (color >> 24) & 0xff;
ir = (color >> 16) & 0xff;
ig = (color >> 8) & 0xff;
ib = color & 0xff;
a = ia / 255.0f;
r = ir / 255.0f;
g = ig / 255.0f;
b = ib / 255.0f;
gl.glClearColor(r, g, b, a);
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
}
public void paintTex(int glid, int target, int w, int h, int color) {
float r, g, b, a;
int ir, ig, ib, ia;
ia = (color >> 24) & 0xff;
ir = (color >> 16) & 0xff;
ig = (color >> 8) & 0xff;
ib = color & 0xff;
a = ia / 255.0f;
r = ir / 255.0f;
g = ig / 255.0f;
b = ib / 255.0f;
pushFramebuffer();
setFramebuffer(FBO);
FBO.setDrawBuffer(target, glid);
saveView();
setOrthographicView(w, h);
gl.glColor4f(r, g, b, a);
gl.glBegin(GL.GL_QUADS);
gl.glVertex2f(0.0f, 0.0f);
gl.glVertex2f(w, 0.0f);
gl.glVertex2f(w, h);
gl.glVertex2f(0.0f, h);
gl.glEnd();
restoreView();
popFramebuffer();
}
private static ProfileInformation getProfileInformation(final GL gl) {
final GLContext context = gl.getContext();
context.validateCurrent();
ProfileInformation data = (ProfileInformation) context.getAttachedObject(implObjectKey);
if (data == null) {
data = new ProfileInformation();
context.attachObject(implObjectKey, data);
}
return data;
}
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;
}
public static int createGLResource(int type, int param) {
int id = 0;
if (type == GL_TEXTURE_OBJECT) {
int[] temp = new int[1];
gl.glGenTextures(1, temp, 0);
id = temp[0];
glTextureObjects.add(id);
} else if (type == GL_VERTEX_BUFFER) {
int[] temp = new int[1];
gl.glGenBuffersARB(1, temp, 0);
id = temp[0];
glVertexBuffers.add(id);
} else if (type == GL_FRAME_BUFFER) {
int[] temp = new int[1];
gl.glGenFramebuffersEXT(1, temp, 0);
id = temp[0];
glFrameBuffers.add(id);
} else if (type == GL_RENDER_BUFFER) {
int[] temp = new int[1];
gl.glGenRenderbuffersEXT(1, temp, 0);
id = temp[0];
glRenderBuffers.add(id);
} else if (type == GLSL_PROGRAM) {
id = gl.glCreateProgram();
glslPrograms.add(id);
} else if (type == GLSL_SHADER) {
id = gl.glCreateShader(param);
glslShaders.add(id);
}
return id;
}
public void render3D(GL gl, GLDrawable glc) {
if (pts2d.size() < 4) return;
if (fill != null || texture != null) {
if (texture == null) {
setColor(gl, fill);
gl.glDisable(GL.GL_TEXTURE_2D);
} else {
setColor(gl, Color.white);
Texture gltexture = texture.getTexture(glc);
gltexture.enable();
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_REPEAT);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_REPEAT);
gl.glTexEnvf(GL.GL_TEXTURE_ENV, GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
gltexture.bind();
}
gl.glPushMatrix();
// get 4 control points of portal
Point2D p0 = pts2d.get(0);
Point2D p1 = pts2d.get(1);
Point2D p2 = pts2d.get(2);
Point2D p3 = pts2d.get(3);
// render 1st side of portal with height extra[0]
renderOneside(p0, p1, gl, extra[0]);
// render 1st side of portal with height extra[1]
renderOneside(p2, p3, gl, extra[1]);
gl.glPopMatrix();
}
}
public void clearTex(int glid, int target, int color) {
float r, g, b, a;
int ir, ig, ib, ia;
ia = (color >> 24) & 0xff;
ir = (color >> 16) & 0xff;
ig = (color >> 8) & 0xff;
ib = color & 0xff;
a = ia / 255.0f;
r = ir / 255.0f;
g = ig / 255.0f;
b = ib / 255.0f;
pushFramebuffer();
setFramebuffer(FBO);
FBO.setDrawBuffer(target, glid);
gl.glClearColor(r, g, b, a);
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
popFramebuffer();
}
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]);
}
/**
* 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;
}
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;
}
@Override
public void clear(final GL gl, final int sizeLimit, final boolean fading) {
isFading = fading;
if (sizeLimit == 0) {
objects.clear();
} else {
int size = objects.size();
for (int i = 0, n = size - sizeLimit; i < n; i++) {
objects.poll();
}
}
currentList = newCurrentList();
objects.offer(currentList);
Integer index = openGLListIndex;
if (index != null) {
gl.getGL2().glDeleteLists(index, 1);
openGLListIndex = null;
}
}
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);
}
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;
}
public static void deleteGLResource(int id, int type) {
if (type == GL_TEXTURE_OBJECT) {
if (glTextureObjects.contains(id)) {
int[] temp = {id};
gl.glDeleteTextures(1, temp, 0);
glTextureObjects.remove(id);
}
} else if (type == GL_VERTEX_BUFFER) {
if (glVertexBuffers.contains(id)) {
int[] temp = {id};
gl.glDeleteBuffersARB(1, temp, 0);
glVertexBuffers.remove(id);
}
} else if (type == GL_FRAME_BUFFER) {
if (glFrameBuffers.contains(id)) {
int[] temp = {id};
gl.glDeleteFramebuffersEXT(1, temp, 0);
glFrameBuffers.remove(id);
}
} else if (type == GL_RENDER_BUFFER) {
if (glRenderBuffers.contains(id)) {
int[] temp = {id};
gl.glDeleteRenderbuffersEXT(1, temp, 0);
glRenderBuffers.remove(id);
}
} else if (type == GLSL_PROGRAM) {
if (glslPrograms.contains(id)) {
gl.glDeleteProgram(id);
glslPrograms.remove(id);
}
} else if (type == GLSL_SHADER) {
if (glslShaders.contains(id)) {
gl.glDeleteShader(id);
glslShaders.remove(id);
}
}
}
public synchronized void unbind(GL gl) {
int b[] = blocks.get(0);
gl.gldUnbind(GL.VBO_TYPE_COLOR, id);
}
protected void setupDefaultBlending() {
// Default blending mode in PGraphicsOpenGL.
blendMode = BLEND;
gl.glBlendEquation(GL.GL_FUNC_ADD);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
}
protected void getVersionNumbers() {
glVersion = gl.glGetString(GL.GL_VERSION);
glMajor = Character.getNumericValue(glVersion.charAt(0));
glMinor = Character.getNumericValue(glVersion.charAt(2));
glslVersion = gl.glGetString(GL.GL_SHADING_LANGUAGE_VERSION_ARB);
}
protected void getAvailableExtensions() {
// For a complete list of extensions, go to this sections in the openGL
// registry:
// http://www.opengl.org/registry/#arbextspecs
// http://www.opengl.org/registry/#otherextspecs
String extensions = gl.glGetString(GL.GL_EXTENSIONS);
if (extensions.indexOf("GL_ARB_multitexture") == -1) {
multiTexAvailable = false;
System.out.println("GL_ARB_multitexture extension not available");
}
if (extensions.indexOf("GL_ARB_vertex_buffer_object") == -1) {
vbosAvailable = false;
System.out.println("GL_ARB_vertex_buffer_object extension not available");
}
if (extensions.indexOf("GL_EXT_framebuffer_object") == -1) {
fbosAvailable = false;
System.out.println("GL_EXT_framebuffer_object extension not available");
}
if (extensions.indexOf("GL_ARB_shader_objects") == -1) {
shadersAvailable = false;
System.out.println("GL_ARB_shader_objects extension not available");
}
if (extensions.indexOf("GL_EXT_geometry_shader4") == -1) {
geoShadersAvailable = false;
System.out.println("GL_ARB_geometry_shader4 extension not available");
}
if (extensions.indexOf("GL_ARB_vertex_shader") == -1) {
vertShadersAvailable = false;
System.out.println("GL_ARB_vertex_shader extension not available");
}
if (extensions.indexOf("GL_ARB_fragment_shader") == -1) {
fragShadersAvailable = false;
System.out.println("GL_ARB_fragment_shader extension not available");
}
if (extensions.indexOf("GL_ARB_shading_language_100") == -1) {
glsl100Available = false;
System.out.println("GL_ARB_shading_language_100 extension not available");
}
if (extensions.indexOf("GL_ARB_texture_float") == -1) {
floatTexAvailable = false;
System.out.println("GL_ARB_texture_float extension not available");
}
if (extensions.indexOf("GL_ARB_texture_non_power_of_two") == -1) {
nonTwoPowTexAvailable = false;
System.out.println("GL_ARB_texture_non_power_of_two extension not available");
}
if (extensions.indexOf("GL_EXT_framebuffer_multisample") == -1) {
fboMultisampleAvailable = false;
System.out.println("GL_EXT_framebuffer_multisample extension not available");
}
}
public static void deleteShader(final GL _gl, final IntBuffer shaders) {
final GL2ES2 gl = _gl.getGL2ES2();
for (int i = shaders.position(); i < shaders.limit(); i++) {
gl.glDeleteShader(shaders.get(i));
}
}
public static void detachShader(final GL _gl, final int program, final IntBuffer shaders) {
final GL2ES2 gl = _gl.getGL2ES2();
for (int i = shaders.position(); i < shaders.limit(); i++) {
gl.glDetachShader(program, shaders.get(i));
}
}
/**
* Returns true if GeometryShader is supported, i.e. whether GLContext is ≥ 3.2 or
* ARB_geometry_shader4 extension is available.
*/
public static boolean isGeometryShaderSupported(final GL _gl) {
final GLContext ctx = _gl.getContext();
return ctx.getGLVersionNumber().compareTo(GLContext.Version320) >= 0
|| ctx.isExtensionAvailable(GLExtensions.ARB_geometry_shader4);
}
public static void createShader(final GL _gl, final int type, final IntBuffer shaders) {
final GL2ES2 gl = _gl.getGL2ES2();
for (int i = shaders.position(); i < shaders.limit(); i++) {
shaders.put(i, gl.glCreateShader(type));
}
}
