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Diffstat (limited to 'src/com/jogamp/graph/curve/opengl/TextRenderer.java')
-rw-r--r--src/com/jogamp/graph/curve/opengl/TextRenderer.java353
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diff --git a/src/com/jogamp/graph/curve/opengl/TextRenderer.java b/src/com/jogamp/graph/curve/opengl/TextRenderer.java
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+++ b/src/com/jogamp/graph/curve/opengl/TextRenderer.java
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+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.graph.curve.opengl;
+
+import java.nio.FloatBuffer;
+import java.util.HashMap;
+import java.util.Iterator;
+
+import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GLException;
+import javax.media.opengl.GLUniformData;
+import javax.media.opengl.fixedfunc.GLMatrixFunc;
+
+import jogamp.graph.curve.text.GlyphString;
+import jogamp.graph.font.FontInt;
+import jogamp.graph.geom.plane.AffineTransform;
+import jogamp.graph.geom.plane.Path2D;
+
+import com.jogamp.graph.curve.Region;
+import com.jogamp.graph.font.Font;
+import com.jogamp.graph.geom.Vertex;
+import com.jogamp.graph.geom.opengl.SVertex;
+import jogamp.opengl.Debug;
+import com.jogamp.opengl.util.PMVMatrix;
+import com.jogamp.opengl.util.glsl.ShaderCode;
+import com.jogamp.opengl.util.glsl.ShaderProgram;
+import com.jogamp.opengl.util.glsl.ShaderState;
+
+public class TextRenderer {
+ protected static final boolean DEBUG = Debug.debug("TextRenderer");
+ static final boolean FONTTOOL_CUSTOM = false;
+
+ private ShaderState st = new ShaderState();
+
+ private PMVMatrix pmvMatrix = new PMVMatrix();
+ private GLUniformData mgl_PMVMatrix;
+
+ /**Sharpness is equivalent to the value of t value of texture coord
+ * on the off-curve vertex. The high value of sharpness will
+ * result in high curvature.
+ */
+ private GLUniformData mgl_sharpness = new GLUniformData("p1y", 0.5f);
+ private GLUniformData mgl_alpha = new GLUniformData("g_alpha", 1.0f);
+ private GLUniformData mgl_color = new GLUniformData("g_color", 3, FloatBuffer.allocate(3));
+ private GLUniformData mgl_strength = new GLUniformData("a_strength", 1.8f);
+
+ private boolean initialized = false;
+
+ private int regionType = Region.SINGLE_PASS;
+
+ private HashMap<String, GlyphString> strings = new HashMap<String, GlyphString>();
+ private final Vertex.Factory<? extends Vertex> pointFactory;
+
+ int win_width = 0;
+ int win_height = 0;
+
+ /**
+ * Create a Hardware accelerated Text Renderer.
+ * @param context OpenGL rendering context
+ * @param factory optional Point.Factory for Vertex construction. Default is Vertex.Factory.
+ */
+ public TextRenderer(Vertex.Factory<? extends Vertex> factory, int type) {
+ this.pointFactory = (null != factory) ? factory : SVertex.factory();
+ this.regionType = type;
+ }
+
+ /**
+ * Initialize shaders and bindings for GPU based text Rendering,
+ * should be called only once.
+ * Leaves the renderer enables, ie ShaderState on.
+ *
+ * @param drawable the current drawable
+ * @param shapvalue shaprness around the off-curve vertices
+ * @return true if init succeeded, false otherwise
+ */
+ public boolean init(GL2ES2 gl){
+ if(initialized){
+ if(DEBUG) {
+ System.err.println("HWTextRenderer: Already initialized!");
+ }
+ return true;
+ }
+
+ boolean VBOsupported = gl.isFunctionAvailable("glGenBuffers") &&
+ gl.isFunctionAvailable("glBindBuffer") &&
+ gl.isFunctionAvailable("glBufferData") &&
+ gl.isFunctionAvailable("glDrawElements") &&
+ gl.isFunctionAvailable("glVertexAttribPointer") &&
+ gl.isFunctionAvailable("glDeleteBuffers");
+
+ if(DEBUG) {
+ System.err.println("HWTextRenderer: VBO Supported = " + VBOsupported);
+ }
+
+ if(!VBOsupported){
+ return false;
+ }
+
+ gl.glEnable(GL2ES2.GL_BLEND);
+ gl.glBlendFunc(GL2ES2.GL_SRC_ALPHA, GL2ES2.GL_ONE_MINUS_SRC_ALPHA);
+
+ ShaderCode rsVp = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, 1, TextRenderer.class,
+ "shader", "shader/bin", "curverenderer");
+ ShaderCode rsFp = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, 1, TextRenderer.class,
+ "shader", "shader/bin", "curverenderer");
+
+ ShaderProgram sp = new ShaderProgram();
+ sp.add(rsVp);
+ sp.add(rsFp);
+
+ if(!sp.link(gl, System.err)) {
+ throw new GLException("HWTextRenderer: Couldn't link program: "+sp);
+ }
+
+ st.attachShaderProgram(gl, sp);
+ gl.glBindAttribLocation(sp.id(), 0, "v_position");
+ gl.glBindAttribLocation(sp.id(), 1, "texCoord");
+
+ st.glUseProgram(gl, true);
+
+ pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+ pmvMatrix.glLoadIdentity();
+ pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+ pmvMatrix.glLoadIdentity();
+
+ pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+ pmvMatrix.glLoadIdentity();
+ resetMatrix(null);
+
+ mgl_PMVMatrix = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf());
+ if(!st.glUniform(gl, mgl_PMVMatrix)) {
+ if(DEBUG){
+ System.err.println("Error setting PMVMatrix in shader: "+st);
+ }
+ return false;
+ }
+
+ if(!st.glUniform(gl, mgl_sharpness)) {
+ if(DEBUG){
+ System.err.println("Error setting sharpness in shader: "+st);
+ }
+ return false;
+ }
+
+ if(!st.glUniform(gl, mgl_alpha)) {
+ if(DEBUG){
+ System.err.println("Error setting global alpha in shader: "+st);
+ }
+ return false;
+ }
+
+ if(!st.glUniform(gl, mgl_color)) {
+ if(DEBUG){
+ System.err.println("Error setting global color in shader: "+st);
+ }
+ return false;
+ }
+
+ if(!st.glUniform(gl, mgl_strength)) {
+ System.err.println("Error setting antialias strength in shader: "+st);
+ }
+
+ if(DEBUG) {
+ System.err.println("HWTextRenderer initialized: " + Thread.currentThread()+" "+st);
+ }
+ initialized = true;
+ return true;
+ }
+
+ public void dispose(GL2ES2 gl) {
+ st.destroy(gl);
+ flushCash();
+ }
+
+ public float getAlpha() {
+ return mgl_alpha.floatValue();
+ }
+
+ public ShaderState getShaderState() {
+ return st;
+ }
+
+ public void setAlpha(GL2ES2 gl, float alpha_t) {
+ mgl_alpha.setData(alpha_t);
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_alpha);
+ }
+ }
+
+ public void setColor(GL2ES2 gl, float r, float g, float b){
+ FloatBuffer fb = (FloatBuffer) mgl_color.getBuffer();
+ fb.put(0, r);
+ fb.put(1, r);
+ fb.put(2, r);
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_color);
+ }
+ }
+
+ public final PMVMatrix matrix() { return pmvMatrix; }
+
+ public void rotate(GL2ES2 gl, float angle, float x, float y, float z){
+ pmvMatrix.glRotatef(angle, x, y, z);
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ }
+ }
+ public void translate(GL2ES2 gl, float x, float y, float z){
+ pmvMatrix.glTranslatef(x, y, z);
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ }
+ }
+
+ public void resetMatrix(GL2ES2 gl){
+ pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+ pmvMatrix.glLoadIdentity();
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ }
+ }
+
+ public void setMatrix(GL2ES2 gl){
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ }
+ }
+
+ public void updateAllShaderValues(GL2ES2 gl) {
+ if(null != gl && st.inUse()) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ st.glUniform(gl, mgl_alpha);
+ st.glUniform(gl, mgl_color);
+ st.glUniform(gl, mgl_strength);
+ }
+ }
+
+ /**
+ * @param gl
+ * @param angle
+ * @param ratio
+ * @param near
+ * @param far
+ * @return
+ */
+ public boolean reshapePerspective(GL2ES2 gl, float angle, int width, int height, float near, float far){
+ win_width = width;
+ win_height = height;
+ float ratio = (float)width/(float)height;
+ pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+ pmvMatrix.glLoadIdentity();
+ pmvMatrix.gluPerspective(angle, ratio, near, far);
+
+ if(null != gl) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ }
+
+ return true;
+ }
+
+ public boolean reshapeOrtho(GL2ES2 gl, int width, int height, float near, float far) {
+ win_width = width;
+ win_height = height;
+ pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+ pmvMatrix.glLoadIdentity();
+ pmvMatrix.glOrthof(0, width, 0, height, near, far);
+
+ if(null != gl) {
+ st.glUniform(gl, mgl_PMVMatrix);
+ }
+
+ return true;
+ }
+
+ private GlyphString createString(GL2ES2 gl, Font font, int size, String str) {
+ AffineTransform affineTransform = new AffineTransform(pointFactory);
+
+ Path2D[] paths = new Path2D[str.length()];
+ ((FontInt)font).getOutline(str, size, affineTransform, paths);
+
+ GlyphString glyphString = new GlyphString(pointFactory, font.getName(), str);
+ glyphString.createfromFontPath(paths, affineTransform);
+
+ glyphString.generateRegion(gl.getContext(), mgl_sharpness.floatValue(), st, regionType);
+ return glyphString;
+ }
+
+
+ /** Render the String in 3D space wrt to the font provided at the position provided
+ * the outlines will be generated, if not yet generated
+ * @param font font to be used
+ * @param str text to be rendered
+ * @param position the lower left corner of the string
+ * @param fontSize font size
+ * @param texSize texture size for multipass render
+ * @throws Exception if TextRenderer not initialized
+ */
+ public void renderString3D(GL2ES2 gl, Font font, String str, float[] position, int fontSize, int texSize) {
+ if(!initialized){
+ throw new GLException("HWTextRenderer: not initialized!");
+ }
+ String fontStrHash = getTextHashCode(font, str, fontSize);
+ GlyphString glyphString = strings.get(fontStrHash);
+ if(null == glyphString) {
+ glyphString = createString(gl, font, fontSize, str);
+ strings.put(fontStrHash, glyphString);
+ }
+
+ glyphString.renderString3D(pmvMatrix, win_width, win_height, texSize);
+ }
+
+ private String getTextHashCode(Font font, String str, int fontSize) {
+ // FIXME: use integer hash code
+ return font.getName() + "." + str.hashCode() + "." + fontSize;
+ }
+
+ /** Clears the cached string curves
+ * and destorys underlying buffers
+ */
+ public void flushCash() {
+ Iterator<GlyphString> iterator = strings.values().iterator();
+ while(iterator.hasNext()){
+ GlyphString glyphString = iterator.next();
+ glyphString.destroy();
+ }
+ strings.clear();
+ }
+}
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