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/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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.android.gallery3d.ui;
import javax.microedition.khronos.opengles.GL11;
import javax.microedition.khronos.opengles.GL11Ext;
public class RawTexture extends BasicTexture {
private static final String TAG = "RawTexture";
private final static int[] sTextureId = new int[1];
private final static float[] sCropRect = new float[4];
private final boolean mOpaque;
public RawTexture(int width, int height, boolean opaque) {
mOpaque = opaque;
setSize(width, height);
}
@Override
public boolean isOpaque() {
return mOpaque;
}
protected void prepare(GLCanvas canvas) {
GL11 gl = canvas.getGLInstance();
// Define a vertically flipped crop rectangle for
// OES_draw_texture.
// The four values in sCropRect are: left, bottom, width, and
// height. Negative value of width or height means flip.
sCropRect[0] = 0;
sCropRect[1] = mHeight;
sCropRect[2] = mWidth;
sCropRect[3] = -mHeight;
// Upload the bitmap to a new texture.
GLId.glGenTextures(1, sTextureId, 0);
gl.glBindTexture(GL11.GL_TEXTURE_2D, sTextureId[0]);
gl.glTexParameterfv(GL11.GL_TEXTURE_2D,
GL11Ext.GL_TEXTURE_CROP_RECT_OES, sCropRect, 0);
gl.glTexParameteri(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP_TO_EDGE);
gl.glTexParameterf(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
gl.glTexParameterf(GL11.GL_TEXTURE_2D,
GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
gl.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA,
getTextureWidth(), getTextureHeight(),
0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, null);
mId = sTextureId[0];
mState = STATE_LOADED;
setAssociatedCanvas(canvas);
}
@Override
protected boolean onBind(GLCanvas canvas) {
if (isLoaded()) return true;
Log.w(TAG, "lost the content due to context change");
return false;
}
@Override
public void yield() {
// we cannot free the texture because we have no backup.
}
@Override
protected int getTarget() {
return GL11.GL_TEXTURE_2D;
}
}
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