Android Open Source - Schooner-3D Bitmap Texture

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012 Dan Mercer// w w w  . j  av a2s  .  c om
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.supermercerbros.gameengine.texture;

import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES20;
import android.opengl.GLUtils;
import android.util.Log;

import com.supermercerbros.gameengine.engine.GameRenderer;

public class BitmapTexture extends Texture {
  private static final String TAG = "BitmapTexture";

  private final Resources res;
  private final int resID;
  private final boolean useMipmaps;
  
  /**
   * Creates a Texture based on the given Bitmap. Mipmaps are enabled by
   * default.
   * 
   * @param res The Resources to load the Bitmap from.
   * 
   * @param bmp
   *            The bitmap to make into a texture.
   */
  public BitmapTexture(Resources res, int id) {
    this(res, id, true);
  }

  /**
   * Creates a Texture based on the given Bitmap. Mipmaps are enabled by
   * default.
   * 
   * @param res
   *            The Resources to load the Bitmap from.
   * @param id
   *            The resource id of the image to use as a texture.
   * @param useMipmaps
   *            true if useMipmaps should be used.
   */
  public BitmapTexture(Resources res, int id, boolean useMipmaps) {
    this.res = res;
    this.resID = id;
    this.useMipmaps = useMipmaps;
  }

  @Override
  protected void load() {
    final BitmapFactory.Options opts = new BitmapFactory.Options();
    opts.inScaled = false;
    opts.inPreferredConfig = Bitmap.Config.ARGB_8888;
    final Bitmap bmp = BitmapFactory.decodeResource(res, resID, opts);
    handle = genTextureHandle();
    Log.d(TAG, "glGenTextures generated handle: " + handle);

    GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, handle);
    GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bmp, 0);

    if (useMipmaps) {
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
          GLES20.GL_TEXTURE_MIN_FILTER,
          GLES20.GL_LINEAR_MIPMAP_NEAREST);
    } else {
      GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
          GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
    }
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,
        GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
    if (useMipmaps) {
      GLES20.glGenerateMipmap(GLES20.GL_TEXTURE_2D);
    }
    GameRenderer.logError("BitmapTexture.load()");
  }

}

Java Source Code List

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