android应用开发揭秘第13章01示例，移动图像，opengl绘制星星问题解决！

根据书上教程运行代码报错，2.2的黑屏无效果，4.1的闪退。后研究发现，问题出在在一个物体同时启用了颜色数组和纹理，注释掉

gl.glEnableClientState(GL10.GL_COLOR_ARRAY);

运行即可。

核心代码如下

package com.xieyuan.test;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.util.Random;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.content.Intent;
import android.opengl.GLSurfaceView.Renderer;
import android.opengl.GLUtils;
import android.view.KeyEvent;
import android.view.MotionEvent;

public class GLRender implements Renderer{

	private final static int ONE=0x10000;
	
	//星星总数
	private final static int NUM=50;
	//存放星星的数组
	private Star[] stars=new Star[NUM];
	
	//闪烁的星星
	boolean twinkle=true;
	
	//离观察者的距离
	float ZOOM=-10f;
	//星星的倾角
	float tilt=90f;
	//闪烁星星的自转
	float spin;
	
	private boolean key;
	Random random=new Random();
	
	//纹理ID
	private int texture;
	
	IntBuffer coord=GLNioUtil.IntBufferUtil(new int[]{
			0,0,ONE,0,ONE,ONE,0,ONE
	});
	IntBuffer vertexs=GLNioUtil.IntBufferUtil(new int[]{
			-ONE-ONE,0,
			ONE,-ONE,0,
			ONE,ONE,0,
			-ONE,ONE,0
	});
	ByteBuffer indices=GLNioUtil.ByteBufferUtil(new byte[]{
			1,0,2,3
	});
	
	
	@Override
	public void onSurfaceCreated(GL10 gl, EGLConfig config) {
		//启用阴影平滑
		gl.glShadeModel(GL10.GL_SMOOTH);
		//清除屏幕为黑色背景
		gl.glClearColor(0f, 0f, 0f, 0f);
		//透视修正
		gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);
		
		//创建纹理
		IntBuffer intBuffer=IntBuffer.allocate(1);
		gl.glGenTextures(1, intBuffer);
		texture=intBuffer.get();
		gl.glBindTexture(GL10.GL_TEXTURE_2D, texture);
		gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
		gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
		GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, GLImage.mBitmap[3], 0);
		
		//启用纹理映射
		gl.glEnable(GL10.GL_TEXTURE_2D);
		gl.glShadeModel(GL10.GL_SMOOTH);
		gl.glClearColor(0f, 0f, 0f, 0.5f);
		gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);
		//设置混色函数
		gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE);
		//启用混色
		gl.glEnable(GL10.GL_BLEND);
		
		for(int i=0;i

效果：

转载于:https://www.cnblogs.com/xieyuan/p/3787306.html