如何在Android上将OpenGL ES 1.0代码转换为OpenGL Es 2.0（） _android

万事须己运，他得非我贤。这篇文章主要讲述如何在Android上将OpenGL ES 1.0代码转换为OpenGL Es 2.0？相关的知识，希望能为你提供帮助。
【如何在Android上将OpenGL ES 1.0代码转换为OpenGL Es 2.0（）】我有一个用OpenGL ES 1.0编写的代码，使用GL_LINE_STRIP绘制一条20行。我想将代码升级到OpenGL ES 2.0。代码分为3类：主要活动 MyGLRenderer 形状
我该怎么办？如何设置fragShader和vertShader等？请帮忙以下是代码： mainActivity =

public class mainActivuty extends Activity { private GLSurfaceView surface; public void onCreate(Bundle bundle) { super.onCreate(bundle); surface = new GLSurfaceView(this); surface.setEGLContextClientVersion(1); surface.setRenderer(new MyGLRenderer()); setContentView(surface); }public void onPause(){ super.onPause(); surface.onPause(); }public void onResume() { super.onResume(); surface.onResume(); } }

MyGLRenderer =

public class MyGLRenderer implements Renderer { Shape s; public MyGLRenderer() { s = new Shape(); }public void onSurfaceCreated(GL10 gl, EGLConfig config) { gl.glClearColor(0.0f, 0.0f, 0.5f, 0.5f); }public void onDrawFrame(GL10 gl) { gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); gl.glLoadIdentity(); gl.glTranslatef(0, 0, -8); s.draw(gl); }public void onSurfaceChanged(GL10 gl, int width, int height) { gl.glViewport(0, 0, width, height); gl.glMatrixMode(GL10.GL_PROJECTION); gl.glLoadIdentity(); GLU.gluPerspective(gl, 45.0f, (float) width / (float) height, 0.1f, 100.0f); gl.glMatrixMode(GL10.GL_MODELVIEW); gl.glLoadIdentity(); }@Override public void onSurfaceCreated(GL10 arg0, javax.microedition.khronos.egl.EGLConfig arg1) { // TODO Auto-generated method stub} }

和形状=

public class Shape {float vertices[] ={ -3.14f, -0.00159265f, 0f, -2.826f, -0.31038f, 0f, -2.512f, -0.588816f, 0f, -2.198f, -0.809672f, 0f, -1.884f, -0.951351f, 0f, -1.57f, -1f, 0f, -1.256f, -0.950859f, 0f, -0.942f, -0.808736f, 0f, -0.628f, -0.587528f, 0f, -0.314f, -0.308866f, 0f, 0f, 0f, 0f, 0.314f, 0.308866f, 0f, 0.628f, 0.587528f, 0f, 0.942f, 0.808736f, 0f, 1.256f, 0.950859f, 0f, 1.57f, 1f, 0f, 1.884f, 0.951351f, 0f, 2.198f, 0.809672f, 0f, 2.512f, 0.588816f, 0f, 2.826f, 0.31038f, 0f, 3.14f, 0.00159265f, 0f }; private short[] indices = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}; FloatBuffer vertexBuffer; ShortBuffer indexBuffer; public Shape() { ByteBuffer bb = ByteBuffer.allocateDirect(vertices.length * 4); bb.order(ByteOrder.nativeOrder()); vertexBuffer = bb.asFloatBuffer(); vertexBuffer.put(vertices); vertexBuffer.position(0); ByteBuffer bb2=ByteBuffer.allocateDirect(indices.length*2); bb2.order(ByteOrder.nativeOrder()); indexBuffer=bb2.asShortBuffer(); indexBuffer.put(indices); indexBuffer.position(0); }public void draw(GL10 gl) { gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer); gl.glDrawElements(GL10.GL_LINE_STRIP,indices.length,GL10.GL_UNSIGNED_SHORT,indexBuffer); gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); }}

谢谢
答案有很多方法可以记下这段代码。这是我的建议，因为我之前遇到过这个问题。你的mainActivity不需要太多变化。只需更改此行即可将OpenGL ES版本更改为版本2.0：

surface.setEGLContextClientVersion(2);

正如您所提到的，您还需要两个类。 MyGLRenderer和Shape，我将他们在这里Renderer和Shader clasees。你的Shader类应该有vertcode字符串和fragcode字符串。你的Shader课程如下：

public class Shader {private final static String vertcode = "attribute vec4 a_pos; "+ "void main(){"+ "gl_Position = a_pos; " + "}"; private final static String fragcode = "precision mediump float; " + "uniform vec4 u_color; "+ "void main(){"+ "gl_FragColor = u_color; "+ "}"; private static int program; public static int positionhandle; public static int colorhandle; public static void makeprogram() { int vertexShader= loadShader(GLES20.GL_VERTEX_SHADER, vertcode); int fragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragcode); program = GLES20.glCreateProgram(); GLES20.glAttachShader(program, vertexShader); GLES20.glAttachShader(program, fragmentShader); GLES20.glLinkProgram(program); positionhandle = GLES20.glGetAttribLocation(program,"a_pos"); colorhandle = GLES20.glGetUniformLocation(program, "u_color"); GLES20.glUseProgram(program); }private static int loadShader(int type, String shadertext) { int shader = GLES20.glCreateShader(type); GLES20.glShaderSource(shader, shadertext); GLES20.glCompileShader(shader); return shader; }}

现在你必须设置你的Renderer课程，包括你的积分。上市

class Renderer implements GLSurfaceView.Renderer {private FloatBuffer vertbuffer; @Override public void onSurfaceCreated(GL10 gl, EGLConfig config) { tut1.Shader.makeprogram(); GLES20.glEnableVertexAttribArray(tut1.Shader.positionhandle); float[] verts = {-3.14f, -0.00159265f, 0f, -2.826f, -0.31038f, 0f, -2.512f, -0.588816f, 0f, -2.198f, -0.809672f, 0f, -1.884f, -0.951351f, 0f, -1.57f, -1f, 0f, -1.256f, -0.950859f, 0f, -0.942f, -0.808736f, 0f, -0.628f, -0.587528f, 0f, -0.314f, -0.308866f, 0f, 0f, 0f, 0f, 0.314f, 0.308866f, 0f, 0.628f, 0.587528f, 0f, 0.942f, 0.808736f, 0f, 1.256f, 0.950859f, 0f, 1.57f, 1f, 0f, 1.884f, 0.951351f, 0f, 2.198f, 0.809672f, 0f, 2.512f, 0.588816f, 0f, 2.826f, 0.31038f, 0f, 3.14f, 0.00159265f, 0f }; vertbuffer = makefloatbuffer(verts); }@Override public void onSurfaceChanged(GL10 gl, int width, int height) { GLES20.glViewport(0, 0, width, height); }@Override public void onDrawFrame(GL10 gl) { GLES20.glClearColor(1.0f, 1.0f, 1.0f, 1.0f); GLES20.glUniform4f(tut1.Shader.colorhandle, 1.0f, 0.0f, 0.0f, 1.0f); GLES20.glVertexAttribPointer(tut1.Shader.positionhandle, 3, GLES20.GL_FLOAT, false, 0, vertbuffer); GLES20.glDrawArrays(GLES20.GL_LINE_STRIP, 0, 3); }public FloatBuffer makefloatbuffer(float[] array) { FloatBuffer floatbuff = ByteBuffer.allocateDirect(array.length*4).order(ByteOrder.nativeOrder()).asFloatBuffer(); floatbuff.put(array).position(0); return floatbuff; }}

另一答案ES1.x和ES2.x非常不同。如果你画一条线并且ES1足够你，那么我的建议是“不要转换它”。
如果那是不可能的，那么我建议您在ES2中启动一个新项目/模块，并使用一些教程来帮助您完成整个过程。从你发布的内容来看，这应该足够快了。
然后，只需修改教程项目即可完成所需操作，或者开始将教程中的逻辑复制到案例中进行转换。
从您的代码中，一些方法可能已经改变，但一般来说，您需要做的是：