java - OpenGL es glDrawTexfOES() 2D纹理不渲染

Question

首先，我知道这是一个重复的问题，我检查了另一个问题，但没有帮助!我正在尝试将我的 Android 游戏从 Canvas 系统转换为 GL10。经过大量谷歌搜索后，我决定为表演者做这件事。不管怎样，我尝试构建一个加载和绘制纹理的类。问题是纹理在我的蓝屏上显示为全黑。我不确定是否可以在不创建任何网格或类似内容的情况下绘制纹理，但这就是我想要做的。我只是想按照自己的尺寸绘制 2D 纹理，所以我认为不需要网格。这是我的代码:

onSurfaceCreated

    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config) {
        gl.glClearColor(0.0f, 0.0f, 1.0f, 0.2f);
        gl.glClearDepthf(1.0f);
        gl.glViewport(0, 0, 800,  480);

        gl.glShadeModel(GL10.GL_SMOOTH);
        gl.glEnable(GL10.GL_DEPTH_TEST);
        gl.glEnable(GL10.GL_TEXTURE_2D);
        gl.glDepthFunc(GL10.GL_LEQUAL);
        gl.glMatrixMode(GL10.GL_PROJECTION);
        gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);
        //gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_FASTEST);
        gl.glLoadIdentity();
        // This is the class where I load and draw my textures.
        textureStorage = new TextureStorage(gl);
        //I'm loading a texture.      **CODE A TEXTURE LOADER**
        bgNightID  = textureStorage.Load(BitmapFactory.decodeResource(context.getResources(),R.drawable.bg_game));
        //This is where I load my units variables. Nothing to do with it.
        RenderingFunctions.InitUnits(this);
    }

onDrawFrame

@Override
public void onDrawFrame(GL10 gl) {
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
    gl.glLoadIdentity();
    //gl.glTranslatef(0, 0, -4);
        **CODE B DRAWING**
        // bgNightID is the ID of texture was loaded.
        textureStorage.DrawTexture(bgNightID, 50,50,0,(short)4000,(short)638);
        // Drawing background right here which is shows up black. 
}

CODE A TEXTURE LOADER

public int glLoad( Bitmap bitmap ){
    if ( gl == null ){
        Log.e(TAG, "Failed to load resource.  Context/GL is NULL");return -1;
    }
    int textureName = -1;
    gl.glGenTextures(1, TexIDStorage, 0);
    textureName = TexIDStorage[0];

    Log.d(TAG, "Generated texture: " + textureName);
    gl.glBindTexture(GL10.GL_TEXTURE_2D, textureName);

    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_MIN_FILTER, GL10.GL_NEAREST);
    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);
    gl.glTexEnvf(GL10.GL_TEXTURE_ENV, GL10.GL_TEXTURE_ENV_MODE, GL10.GL_REPLACE);

    GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);

    int error = gl.glGetError();
    if (error != GL10.GL_NO_ERROR){ 
        Log.e(TAG, "GL Texture Load Error: " + error);
    }else
        Log.d(TAG, "Loaded texture: " + textureName);
    return textureName;
}

CODE B DRAWING

public void DrawTexture(int TexutreID, float X, float Y, float Z, short Width, short Height){
    gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
    //gl.glColor4f(1.0f, 1.0f, 1.0f, 0.5f);
    gl.glBindTexture(GL10.GL_TEXTURE_2D, TexIDStorage[TexutreID]);
    ((GL11Ext) gl).glDrawTexfOES(X, Y, Z, Width, Height);
}

我对 GL10 完全陌生，无法弄清楚问题是什么以及我错过了什么。所以如果有人能帮助我那就太好了。感谢您给我们时间!

Answer 1

我非常确定纹理的宽度和高度必须是 2 的幂才能正确显示。尝试缩放位图，使其达到 2 的幂。