android opengles 手机唤醒后 界面上的图形的贴图都没有了，图形呈白色
当手机从锁屏界面解锁后 发现在运行的程序上画出的图形全部变成了白色；
原来图形上的贴图都没有了；
如果 退出程序 再重新打开的话 那么显示正常；
我想锁屏幕的话 应该经过onSurfaceChanged 方法；所以 我怀疑是方法出问题了；
下面贴出 我的renderer 的主要代码
public abstract class AbstractRender implements Renderer{
AnimationCallback mCallback ;
int viewWidth ;
int viewHeight ;
int[] mViewport = null ;
float scale = 0.5f ;
public int[] textures ;
@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
gl.glEnable(GL10.GL_TEXTURE_2D);//Enable Texture Mapping ( NEW )
gl.glShadeModel(GL10.GL_SMOOTH); //Enable Smooth Shading
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.5f); //Black Background
gl.glClearDepthf(1.0f); //Depth Buffer Setup
gl.glEnable(GL10.GL_DEPTH_TEST); //Enables Depth Testing
gl.glDepthFunc(GL10.GL_LEQUAL); //The Type Of Depth Testing To Do
//Really Nice Perspective Calculations
gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);
//纹理相关
// IntBuffer textureBuffer = IntBuffer.allocate(6);
// gl.glGenTextures(6, textureBuffer);
//
// textures = textureBuffer.array();
// bindTexture(gl);
}
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
viewWidth = width ;
viewHeight = height ;
mViewport = new int[]{0,0,width,height};
Log.d("onSurfaceChanged", "onSurfaceChanged,");
gl.glViewport(0, 0, width, height);
float ratio = (float)width/height;
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity(); //Reset The Projection Matrix
gl.glFrustumf(-ratio, ratio, -1, 1, 2, 12);
((CubeActivity)mCallback).mGrabber.getCurrentProjection(gl);
gl.glMatrixMode(GL10.GL_MODELVIEW); //Select The Modelview Matrix
gl.glLoadIdentity(); //Reset The Modelview Matrix
gl.glDisable(GL10.GL_DITHER);
gl.glActiveTexture(GL10.GL_TEXTURE0);
}
float angleX = 30f ;
float angleY = -45f ;
@Override
public void onDrawFrame(GL10 gl) {
if(mCallback != null ){
//Log.d("onDrawFrame", "onDrawFrame");
mCallback.updateTime() ;
mCallback.worldRotate() ;
mCallback.layerRotate() ;
}
gl.glDisable(GL10.GL_DITHER);
//gl.glClearColor(0.5f,0.5f,0.5f,1);
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
//gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
// 设置观察点位置
GLU.gluLookAt(gl, 0, 0, 1.0f, 0, 0, 0, 0, 1, 0);
gl.glTranslatef(0, 0, -3.0f);
gl.glScalef(scale, scale, scale);
// 旋转魔方，绕X轴旋转30度，然后绕Y轴旋转45度
gl.glRotatef(angleX, 1, 0, 0);
gl.glRotatef(angleY, 0, 1, 0);
gl.glColor4f(0.7f, 0.7f, 0.7f, 1.0f);
//gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
//gl.glEnableClientState(GL10.GL_COLOR_ARRAY);
//
//gl.glEnable(GL10.GL_TEXTURE_2D);
//gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY) ;
//
//gl.glEnable(GL10.GL_CULL_FACE);
//gl.glFrontFace(GL10.GL_CW);
// gl.glShadeModel(GL10.GL_SMOOTH);
// gl.glEnable(GL10.GL_DEPTH_TEST);
((CubeActivity)mCallback).mGrabber.getCurrentModelView(gl);
// 绑定纹理
//gl.glBindTexture(GL10.GL_TEXTURE_2D, texture);
draw(gl);
// 禁用顶点、纹理坐标数组
//gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
//gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
//gl.glDisableClientState(GL10.GL_COLOR_ARRAY);
//gl.glDisable(GL10.GL_DEPTH_TEST);
// gl.glDisableClientState(GL10.GL_CULL_FACE);
//angle++ ;
}
protected abstract void draw(GL10 gl);
public interface AnimationCallback{
void worldRotate();
void layerRotate();
void updateTime();
}
public void setScale(float _scale){
scale = scale *_scale ;
if(scale > 0.85f){
scale = 0.85f ;
}else if(scale < 0.1f){
scale = 0.1f ;
}
//缩放后要重新将立体点转换成2维的平面坐标，因为立方体大小改变了
((CubeActivity)mCallback).isPoint2DProjected = false ;
}
}
public void draw(GL10 gl,int[] texture){
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
//mIndexBuffer.position(0);
//mVertexBuffer.position(0);
//mColorBuffer.position(0);
//mTextureBuffer.position(0);
//gl.glEnable(GL10.GL_CULL_FACE);
gl.glFrontFace(GL10.GL_CCW);
//gl.glShadeModel(GL10.GL_FLAT);
gl.glCullFace(GL10.GL_BACK);
//gl.glEnable(GL10.GL_DEPTH_TEST); //不会画被挡住的图形部分
//gl.glVertexPointer(3, GL10.GL_FLOAT, 0, mVertexBuffer);
//gl.glColorPointer(4, GL10.GL_FIXED, 0, mColorBuffer);
//gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, mTextureBuffer);
for(int i = 0 ;i < 27 ;i++){
mWorldCubeList.get(i).draw(gl);
}
// gl.glDisable(GL10.GL_DEPTH_TEST);
// gl.glDisableClientState(GL10.GL_CULL_FACE);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
//gl.glDrawElements(GL10.GL_TRIANGLES, mIndexCount, GL10.GL_UNSIGNED_SHORT, mIndexBuffer);
}
public void draw(GL10 gl){
if(this.bInitTexture){
this.loadGLTexture(gl);
bInitTexture = false;
}
//gl.glColor4f(mFaceColor.red, mFaceColor.green, mFaceColor.blue, mFaceColor.alpha);
//if(!mFaceColor .equals(UtilHelper.BLACK) ){
// Enable the texture state
// gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// Point to our buffers
gl.glBindTexture(GL10.GL_TEXTURE_2D, mTextureId);
FloatBuffer textureBuffer = getTextureBuffer();
textureBuffer.position(0);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer);
//}else{
//}
ShortBuffer indicesBuffer = getIndicesBuffer();
indicesBuffer.position(0);
gl.glDrawElements(GL10.GL_TRIANGLE_STRIP, 4, GL10.GL_UNSIGNED_SHORT, indicesBuffer);
// if (!mFaceColor .equals(UtilHelper.BLACK)) {
//gl.glDisable(GL10.GL_TEXTURE_2D);
// gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
// }
}
[解决办法]
