zildo.platform.opengl.compatibility.VBOHardware.java Source code

Introduction

Here is the source code for zildo.platform.opengl.compatibility.VBOHardware.java

Source

/**
 * The Land of Alembrum
 * Copyright (C) 2006-2013 Evariste Boussaton
 * 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package zildo.platform.opengl.compatibility;

import java.nio.IntBuffer;

import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.ARBVertexBufferObject;
import org.lwjgl.opengl.GL11;

import zildo.fwk.opengl.compatibility.VBOBuffers;
import zildo.platform.opengl.GLUtils;

public class VBOHardware extends VBOSoftware {

    @Override
    public VBOBuffers create(int p_numPoints, boolean p_forTiles) {

        VBOBuffers bufs = super.create(p_numPoints, p_forTiles);
        bufs.vertexBufferId = GLUtils.createVBO();
        bufs.textureBufferId = GLUtils.createVBO();

        return bufs;
    }

    @Override
    public void draw(VBOBuffers p_bufs, int start, int count) {
        preDraw();

        int stride = 4 * 4;
        ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, p_bufs.vertexBufferId);
        GL11.glVertexPointer(2, GL11.GL_FLOAT, stride, 0);
        GL11.glTexCoordPointer(2, GL11.GL_FLOAT, stride, 2 * 4);

        //GL12.glDrawRangeElements(GL11.GL_TRIANGLES, 0, count, count, GL11.GL_UNSIGNED_SHORT, 0);
        GL11.glDrawArrays(GL11.GL_TRIANGLES, start, count);
    }

    @Override
    public void cleanUp(VBOBuffers p_bufs) {
        IntBuffer buf = BufferUtils.createIntBuffer(1);
        buf.put(p_bufs.vertexBufferId);
        buf.flip();
        ARBVertexBufferObject.glDeleteBuffersARB(buf);
        buf = BufferUtils.createIntBuffer(1);
        buf.put(p_bufs.textureBufferId);
        buf.flip();
        ARBVertexBufferObject.glDeleteBuffersARB(buf);
    }

    boolean done = false;

    @Override
    public void endInitialization(VBOBuffers p_bufs) {
        super.endInitialization(p_bufs);
        GLUtils.bufferData(p_bufs.textureBufferId, p_bufs.textures, false);
        GLUtils.bufferData(p_bufs.vertexBufferId, p_bufs.vertices, false);
    }
}