Android Open Source - swipemenu Texture Helper

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Back to project page swipemenu.

License

The source code is released under:

Apache License

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Java Source Code

package com.orhanobut.android.swipemenu;
/*  w w  w . ja  va2 s  . co  m*/
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES20;
import android.opengl.GLUtils;

import java.io.InputStream;

public class TextureHelper {

  public static int loadTexture(final Context context, final int resourceId) {
    final int[] textureHandle = new int[1];

    GLES20.glGenTextures(1, textureHandle, 0);

    if (textureHandle[0] != 0) {
      final BitmapFactory.Options options = new BitmapFactory.Options();
      options.inScaled = false; // No pre-scaling

      // Read in the resource
      InputStream is = context.getResources().openRawResource(resourceId);

            // create bitmap from input stream
      Bitmap bitmap = BitmapFactory.decodeStream(is);

      // Bind to the texture in OpenGL
      GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle[0]);

      // Set filtering
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
          GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);

      // Load the bitmap into the bound texture.
      GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);

      // Recycle the bitmap, since its data has been isLoaded into OpenGL.
      bitmap.recycle();
    }

    if (textureHandle[0] == 0) {
      throw new RuntimeException("Error loading texture.");
    }

    return textureHandle[0];
  }
}

Java Source Code List