经过一番谷歌搜索后，我在几部手机上发现我的 glSurfaceView 中的一些纹理没有加载（仅显示白色），我设置 setDebugFlags(DEBUG_CHECK_ERROR) 以获取下面列出的以下错误日志。MenuButton.java 中的第 40 行是：
gl.glGenTextures(1, textures, 0);
其中 textures 是我的纹理指针，声明为：
private int[] textures = new int[1];
我很难过，因为我只在 Droid Pro 和其他几部手机上看到过这个问题，而且我不确定 gl.glGenTextures 的值如何无效。任何想法都会很有用。
编辑：菜单按钮的代码发布在下面。
12-06 17:46:31.720: E/AndroidRuntime(2984): android.opengl.GLException: invalid value
12-06 17:46:31.720: E/AndroidRuntime(2984): at android.opengl.GLErrorWrapper.glGenTextures(GLErrorWrapper.java:350)
12-06 17:46:31.720: E/AndroidRuntime(2984): at com.huskybuspurchased.MenuButton.<init>(MenuButton.java:40)
12-06 17:46:31.720: E/AndroidRuntime(2984): at com.huskybuspurchased.CampusMap.onSurfaceCreated(CampusMap.java:112)
12-06 17:46:31.720: E/AndroidRuntime(2984): at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1348)
12-06 17:46:31.720: E/AndroidRuntime(2984): at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1118)
12-06 17:46:31.728: I/hb(2984): rendering thread paused.
问题图片：
package com.huskybus;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.opengles.GL10;
import android.graphics.Bitmap;
import android.opengl.GLUtils;
import android.util.Log;
import android.view.MotionEvent;
public class MenuButton {
//Our texture.
private float texture[] = {
//Mapping coordinates for the vertices
0.0f, 1.0f,
1.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
};
// The order we like to connect them.
private byte indices[] = {0,1,3,2};
// Our vertex buffer.
private FloatBuffer vertexBuffer;
// Our index buffer.
private ByteBuffer indexBuffer;
//texture buffer.
private FloatBuffer textureBuffer;
//Our texture pointer.
private int[] textures = new int[1];
private int width;
private int height;
private float rotation;
public MenuButton(Bitmap graphic,int _rotation,GL10 gl, int _width, int _height) {
rotation=_rotation;
width=_width;
height=_height;
//Generate one texture pointer...
gl.glGenTextures(1, textures, 0);
//...and bind it to our array
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE);
//Use the Android GLUtils to specify a two-dimensional texture image from our bitmap
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, graphic, 0);
graphic.recycle();
float vertices[] = {
0, -height, 0.0f, //LB
width, -height, 0.0f, //RB
0, 0, 0.0f, //LT
width, 0, 0.0f, //RT
};
ByteBuffer byteBuf = ByteBuffer.allocateDirect(vertices.length * 4);
byteBuf.order(ByteOrder.nativeOrder());
vertexBuffer = byteBuf.asFloatBuffer();
vertexBuffer.put(vertices);
vertexBuffer.position(0);
//
byteBuf = ByteBuffer.allocateDirect(texture.length * 4);
byteBuf.order(ByteOrder.nativeOrder());
textureBuffer = byteBuf.asFloatBuffer();
textureBuffer.put(texture);
textureBuffer.position(0);
//
indexBuffer = ByteBuffer.allocateDirect(indices.length);
indexBuffer.put(indices);
indexBuffer.position(0);
}
/**
* This function draws our square on screen.
* @param gl
*/
public void draw(GL10 gl) {
//Bind our only previously generated texture in this case
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
//Point to our buffers
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
//Set the face rotation
gl.glFrontFace(GL10.GL_CCW);
//Enable the vertex and texture state
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer);
gl.glRotatef(rotation, 0, 0, 1);
//Draw the vertices as triangles, based on the Index Buffer information
gl.glDrawElements(GL10.GL_TRIANGLE_FAN, indices.length, GL10.GL_UNSIGNED_BYTE, indexBuffer);
gl.glRotatef(360-rotation, 0, 0, 1);
// Disable the vertices buffer.
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
//Disable the texture buffer.
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// Disable face culling.
gl.glEnable(GL10.GL_CULL_FACE);
}
public boolean amIHit(float[] matrixValues,MotionEvent event) {
if (((event.getX())>(0)&&((event.getX()))<5+width)&&((event.getY())>0)&&(event.getY()<width)) {
Log.e("sys","hit menu button.");
return true;
}
return false;
}
}