Add initial GPU based curve rendering implementation, utilizing TTF fonts and manual shapes

1 files changed, 185 insertions, 0 deletions

diff --git a/src/jogamp/graph/curve/opengl/VBORegionSPES2.java b/src/jogamp/graph/curve/opengl/VBORegionSPES2.java
new file mode 100644
index 000000000..5ef23d4e0
--- /dev/null
+++ b/src/jogamp/graph/curve/opengl/VBORegionSPES2.java
@@ -0,0 +1,185 @@
+/**
+ * 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 jogamp.graph.curve.opengl;
+
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
+import java.util.ArrayList;
+
+import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GLContext;
+
+import com.jogamp.common.nio.Buffers;
+import com.jogamp.graph.curve.Region;
+import com.jogamp.graph.geom.PointTex;
+import com.jogamp.graph.geom.Triangle;
+import com.jogamp.opengl.util.PMVMatrix;
+
+public class VBORegionSPES2  implements Region{
+	private int numVertices = 0;
+	private IntBuffer vboIds;
+	
+	private ArrayList<Triangle<PointTex>> triangles = new ArrayList<Triangle<PointTex>>();
+	private ArrayList<PointTex> vertices = new ArrayList<PointTex>();
+	
+	private GLContext context;
+	
+	private int numBuffers = 3;
+	
+	private boolean flipped = false;
+	private boolean dirty = false;
+	
+	public VBORegionSPES2(GLContext context){
+		this.context =context;
+	}
+	
+	public void update(){
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		ShortBuffer indicies = Buffers.newDirectShortBuffer(triangles.size() * 3);
+		
+		for(Triangle<PointTex> t:triangles){
+			final PointTex[] t_vertices = t.getVertices();
+			
+			if(t_vertices[0].getId() == Integer.MAX_VALUE){
+				t_vertices[0].setId(numVertices++);
+				t_vertices[1].setId(numVertices++);
+				t_vertices[2].setId(numVertices++);
+				
+				vertices.add(t.getVertices()[0]);
+				vertices.add(t.getVertices()[1]);
+				vertices.add(t.getVertices()[2]);
+
+				indicies.put((short) t.getVertices()[0].getId());
+				indicies.put((short) t.getVertices()[1].getId());
+				indicies.put((short) t.getVertices()[2].getId());
+			}
+			else{
+				PointTex v1 = t_vertices[0];
+				PointTex v2 = t_vertices[1];
+				PointTex v3 = t_vertices[2];
+				
+				indicies.put((short) v1.getId());
+				indicies.put((short) v2.getId());
+				indicies.put((short) v3.getId());
+			}
+		}
+		indicies.rewind();
+		
+		FloatBuffer verticesBuffer = Buffers.newDirectFloatBuffer(vertices.size() * 3);
+		for(PointTex v:vertices){
+			verticesBuffer.put(v.getX());
+			if(flipped){
+				verticesBuffer.put(-1*v.getY());
+			}
+			else{
+				verticesBuffer.put(v.getY());
+			}
+			verticesBuffer.put(v.getZ());
+		}
+		verticesBuffer.rewind();
+		
+		FloatBuffer texCoordBuffer = Buffers.newDirectFloatBuffer(vertices.size() * 2);
+		for(PointTex v:vertices){
+			float[] tex = v.getTexCoord();
+			texCoordBuffer.put(tex[0]);
+			texCoordBuffer.put(tex[1]);
+		}
+		texCoordBuffer.rewind();
+
+		vboIds = IntBuffer.allocate(numBuffers);
+		gl.glGenBuffers(numBuffers, vboIds);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(0)); // vertices
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, numVertices * 3 * Buffers.SIZEOF_FLOAT, verticesBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(1)); //texture
+		gl.glBufferData(GL2ES2.GL_ARRAY_BUFFER, numVertices * 2 * Buffers.SIZEOF_FLOAT, texCoordBuffer, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, vboIds.get(2)); //triangles
+		gl.glBufferData(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, triangles.size()* 3 * Buffers.SIZEOF_SHORT, indicies, GL2ES2.GL_STATIC_DRAW);
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, 0);
+		
+		dirty = false;
+	}
+	
+	private void render() {
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(0));
+		gl.glEnableVertexAttribArray(VERTEX_POS_INDX);
+		gl.glVertexAttribPointer(VERTEX_POS_INDX, 3, GL2ES2.GL_FLOAT, false, 3 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, vboIds.get(1));
+		gl.glEnableVertexAttribArray(TEX_COORD);
+		gl.glVertexAttribPointer(TEX_COORD, 2, GL2ES2.GL_FLOAT, false, 2 * Buffers.SIZEOF_FLOAT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ELEMENT_ARRAY_BUFFER, vboIds.get(2));
+		gl.glDrawElements(GL2ES2.GL_TRIANGLES, triangles.size() * 3, GL2ES2.GL_UNSIGNED_SHORT, 0);
+		
+		gl.glBindBuffer(GL2ES2.GL_ARRAY_BUFFER, 0);
+	}
+	
+	public void render(PMVMatrix matrix, int vp_width, int vp_height, int width){
+		render();
+	}
+	
+	public void addTriangles(ArrayList<Triangle<PointTex>> tris) {
+		triangles.addAll(tris);
+		dirty = true;
+	}
+	
+	public int getNumVertices(){
+		return numVertices;
+	}
+	
+	public void addVertices(ArrayList<PointTex> verts){
+		vertices.addAll(verts);
+		numVertices = vertices.size();
+		dirty = true;
+	}
+	
+	public boolean isDirty(){
+		return dirty;
+	}
+	
+	public void destroy() {
+		GL2ES2 gl = context.getGL().getGL2ES2();
+		gl.glDeleteBuffers(numBuffers, vboIds);
+	}
+	
+	public boolean isFlipped() {
+		return flipped;
+	}
+
+	public void setFlipped(boolean flipped) {
+		this.flipped = flipped;
+	}
+}