Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import static android.opengl.GLES20.GL_ARRAY_BUFFER;
import static android.opengl.GLES20.GL_STATIC_DRAW;
import static android.opengl.GLES20.glBindBuffer;
import static android.opengl.GLES20.glBufferData;
import static android.opengl.GLES20.glGenBuffers;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

public class Main {
    public static int[] arrayToBufferId(float[] arr) {

        int[] bufferId = new int[1];
        // let's generate
        glGenBuffers(1, bufferId, 0);

        FloatBuffer fb = arrayToBuffer(arr);
        // bind the two buffer
        glBindBuffer(GL_ARRAY_BUFFER, bufferId[0]);
        glBufferData(GL_ARRAY_BUFFER, fb.capacity() * 4, fb, GL_STATIC_DRAW);
        glBindBuffer(GL_ARRAY_BUFFER, 0);
        return bufferId;
    }

    public static FloatBuffer arrayToBuffer(float[] arr) {
        FloatBuffer buffer = ByteBuffer.allocateDirect(arr.length * 4).order(ByteOrder.nativeOrder())
                .asFloatBuffer();
        buffer.put(arr).position(0);
        return buffer;
    }
}