纹理不显示在球体的三星Galaxy SL

问题描述

我学习的为Android框架。我想他们的第一个基本教程，如下：

I am studying the Rajawali framework for Android. I tried their first basic tutorial which is as follows:

public class RRenderer extends RajawaliRenderer {
private DirectionalLight mLight;
private BaseObject3D mSphere;

public RRenderer(Context context) {
    super(context);
    setFrameRate(60);
}

protected void initScene() {
    mLight = new DirectionalLight(1f, 0.2f, 1.0f); // set the direction
    mLight.setColor(1.0f, 1.0f, 1.0f);
    mLight.setPower(2);

    Bitmap bg = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.earthtruecolor_nasa_big);
    DiffuseMaterial material = new DiffuseMaterial();
    mSphere = new Sphere(1, 18, 18);
    mSphere.setMaterial(material);
    mSphere.addLight(mLight);
    mSphere.addTexture(mTextureManager.addTexture(bg));
    addChild(mSphere);

    mCamera.setZ(-4.2f);
}

public void onSurfaceCreated(GL10 gl, EGLConfig config) {
    super.onSurfaceCreated(gl, config);
}

public void onDrawFrame(GL10 glUnused) {
    super.onDrawFrame(glUnused);
    mSphere.setRotY(mSphere.getRotY() + 1);
}

}

所有我做的是创建一个球体并加入地球图像作为纹理。
图像的尺寸为1024×512

All I am doing is creating a Sphere and adding an Earth image as a texture to it.The size of the image is 1024x512.

当我在我的三星Galaxy SL运行此code，球体是不是有这个纹理相反，它是在一个黑暗的灰色。但是，当我运行的其他设备（的Nexus 7和索尼Xperia）这个code，正确显示纹理。
另外，如果我使用纹理像512×512，显示正确的三星Galaxy SL的质感。

When I run this code on my Samsung Galaxy SL, the sphere is not having this texture instead it is in a dark grey color. But when I run this code on other devices (Nexus 7 and Sony Xperia), the texture is displayed correctly. Also if I use a texture like 512x512, the texture is displayed correctly on Samsung Galaxy SL.

我发现一个提示，但不知道如何着手：OpenGL ES 2.0的质地没有显示的设备上

I found a hint but dont know how to proceed: OpenGL ES 2.0 texture not showing on some device

推荐答案

这是OpenGL的提供的最小过滤器

The min filters provided by opengl are

GLES20.GL_LINEAR_MIPMAP_LINEAR，GLES20.GL_NEAREST_MIPMAP_NEAREST，GLES20.GL_LINEAR，
GLES20.GL_NEAREST

GLES20.GL_LINEAR_MIPMAP_LINEAR, GLES20.GL_NEAREST_MIPMAP_NEAREST, GLES20.GL_LINEAR,GLES20.GL_NEAREST

纹理似乎呈现以下行code的
GLES20.glTexParameteri（GLES20.GL_TEXTURE_2D，GLES20.GL_TEXTURE_MIN_FILTER，GLES20.GL_LINEAR）;

The texture seems to be rendering for the following line of codeGLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);

我来到了该设备不渲染纹理时，纹理映射是这样的结论。

I came to the conclusion that the device does not render texture when the Mipmapping is on.

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