标签：img 大小 idg java conf 编程语言 code ram inf
OpenGL EL
嵌入式图形处理库
定义了一个跨编程语言、跨平台编程的专业图形程序接口
步骤：
实例
创建render类：
package com.example.noooooo;
import android.opengl.GLES20;
import android.opengl.GLSurfaceView;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
public class WlGlRender implements GLSurfaceView.Renderer {
public WlGlRender(){
}
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
//设置窗口大小
GLES20.glViewport(0,0,width,height);
}
@Override
public void onDrawFrame(GL10 gl) {
//设置清屏
//1:像素信息清除
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
//2：用颜色来表示清屏
GLES20.glClearColor(1.0f,0.0f,0.0f,1.0f);
}
}
创建GLSurfaceView类，在里面调用Render
package com.example.noooooo;
import android.content.Context;
import android.opengl.GLSurfaceView;
import android.util.AttributeSet;
public class CxjGLSurfaceView extends GLSurfaceView {
private WlGlRender cxjRender;
public CxjGLSurfaceView(Context context) {
super(context,null);
}
public CxjGLSurfaceView(Context context, AttributeSet attrs) {
super(context, attrs);
cxjRender = new WlGlRender();
setRenderer(cxjRender);
}
}
修改layout布局
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.example.noooooo.CxjGLSurfaceView
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>
运行效果：界面变成红色
GLSurfaceView流程分析：
标签：img 大小 idg java conf 编程语言 code ram inf
原文地址：https://www.cnblogs.com/cxj1821/p/12035307.html
