未使用texImage2D渲染的android opengl位图图像

我想创建一个挥动的旗帜作为动态壁纸，问题在于它不会绘制图像（没有错误！），但它会成功绘制其他纹理。我考虑过其他类似的问题和解决方案，但没有成功。未使用texImage2D渲染的android opengl位图图像

这里是实现GLSurfaceView.Renderer为StripesSurfaceView代码：

private final class StripesSurfaceView extends GLSurfaceView implements 
      GLSurfaceView.Renderer { 


     private Context context; 

     private int textures[]; 

     private OpenGLFlag flag; 

     private boolean paused = false; 

     public StripesSurfaceView(Context context) { 
      super(context); 
      this.context = context; 
      setRenderer(this); 
      setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY); 

     } 

     @Override 
     public final SurfaceHolder getHolder() { 
      return WallpaperEngine.this.getSurfaceHolder(); 
     } 

     public final void onDestroy() { 
      super.onDetachedFromWindow(); 
     } 

     @Override 
     public final void onDrawFrame(GL10 gl) { 
      GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT); 

      gl.glPushMatrix(); 

      // rotate 
      gl.glRotatef(Constants.FLAG_ROTATION_X, 1.0f, 0.0f, 0.0f); 
      gl.glRotatef(Constants.FLAG_ROTATION_Y, 0.0f, 1.0f, 0.0f); 
      gl.glRotatef(Constants.FLAG_ROTATION_Z, 0.0f, 0.0f, 1.0f); 

      // draw 
      flag.draw(gl, paused); 

      gl.glPopMatrix(); 

     } 

     @Override 
     public final void onSurfaceChanged(GL10 gl, int width, 
       int height) { 
      float ratio = (float) width/height; 

      // flag 
      flag = new OpenGLFlag(textures[0], 0, 0, 0, ratio * 2, ratio); 

      gl.glShadeModel(GL10.GL_SMOOTH); 
      GLES20.glClearDepthf(1.0f); 
      GLES20.glEnable(GLES20.GL_DEPTH_TEST); 
      GLES20.glDepthFunc(GLES20.GL_LEQUAL); 
      GLES20.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GLES20.GL_NICEST); 
      GLES20.glEnable(GLES20.GL_BLEND); 
      GLES20.glEnable(GL10.GL_POINT_SMOOTH); 
      GLES20.glBlendFunc(GLES20.GL_ONE, GLES20.GL_ONE_MINUS_SRC_ALPHA); // https://www.opengl.org/sdk/docs/man2/xhtml/glBlendFunc.xml 

      GLES20.glViewport(0, 0, width, height); 
      gl.glMatrixMode(GL10.GL_PROJECTION); 
      gl.glLoadIdentity(); 
      gl.glFrustumf(-ratio, ratio, -1, 1, 3, 7); // https://www.opengl.org/sdk/docs/man2/xhtml/glFrustum.xml 

      gl.glMatrixMode(GL10.GL_MODELVIEW); 
      gl.glLoadIdentity(); 
      GLU.gluLookAt(gl, 0, 0, 3.5f, 0, 0, 0, 0, 1.0f, 0); // https://www.opengl.org/sdk/docs/man2/xhtml/gluLookAt.xml 

     } 

     @Override 
     public final void onSurfaceCreated(GL10 gl, EGLConfig config) 
{ 
      // bind texture 
      textures = new int[1]; 
      GLES20.glEnable(GLES20.GL_TEXTURE_2D); 
      GLES20.glGenTextures(textures.length, textures, 0); 
      GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textures[0]); 
      Log.d("gfd", context.getResources()+" :: "+ Constants.FLAG_TEXTURE); 
      Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.s); 
      GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST); 
      GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST); 
      GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0); 
      bitmap.recycle(); 



     } 

    } 

}

这里是哪里叫StripesSurfaceView：

private final class WallpaperEngine extends Engine { 


    private StripesSurfaceView mGLSurfaceView; 

    @Override 
    public void onCreate(SurfaceHolder surfaceHolder) { 

     super.onCreate(surfaceHolder); 
     mGLSurfaceView = new StripesSurfaceView(getApplicationContext()); 

    } 
    // ..... etc

这里是目前的结果是：

纹理到波：使用decodestream

来源

2017-05-04 Arash

你能PLZ在这里发表您的质感？此外，最简单的罪魁祸首可能是非方形纹理。 – codetiger

@codetiger @codetiger我加了，它不透明，它有白色的背景，我用不同的图片测试过，它们都有相同的结果 – Arash

你试过2个纹理的力量，像256x256px的尺寸 – codetiger

问题就迎刃而解了：

 private Bitmap getBitmapFromAssets(Context context, String fileName, int width, int height) { 
      AssetManager asset = context.getAssets(); 
      InputStream is; 
      try { 
       is = asset.open(fileName); 
      BitmapFactory.Options options = new BitmapFactory.Options(); 
      Bitmap bit=BitmapFactory.decodeStream(is, null, options); 
      return bit; 
      } catch (IOException e) { 
       e.printStackTrace(); 
       return null; 
      } 
     }

我在这里发布的源代码： https://github.com/ataafarin/android-live-wallpaper-wavingflag

来源

2017-05-13 06:43:58 Arash

未使用texImage2D渲染的android opengl位图图像

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