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/*
* Copyright (C) 2011 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 android.view;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
/**
* An OpenGL ES 2.0 implementation of {@link HardwareLayer}. This
* implementation can be used as a texture. Rendering into this
* layer is not controlled by a {@link HardwareCanvas}.
*/
class GLES20TextureLayer extends GLES20Layer {
private int mTexture;
private SurfaceTexture mSurface;
GLES20TextureLayer(boolean isOpaque) {
int[] layerInfo = new int[2];
mLayer = GLES20Canvas.nCreateTextureLayer(isOpaque, layerInfo);
if (mLayer != 0) {
mTexture = layerInfo[0];
mFinalizer = new Finalizer(mLayer);
} else {
mFinalizer = null;
}
}
@Override
boolean isValid() {
return mLayer != 0 && mTexture != 0;
}
@Override
boolean resize(int width, int height) {
return isValid();
}
@Override
HardwareCanvas getCanvas() {
return null;
}
@Override
HardwareCanvas start(Canvas currentCanvas) {
return null;
}
@Override
void end(Canvas currentCanvas) {
}
SurfaceTexture getSurfaceTexture() {
if (mSurface == null) {
mSurface = new SurfaceTexture(mTexture, false);
}
return mSurface;
}
void setSurfaceTexture(SurfaceTexture surfaceTexture) {
if (mSurface != null) {
mSurface.release();
}
mSurface = surfaceTexture;
mSurface.attachToGLContext(mTexture);
}
@Override
void update(int width, int height, boolean isOpaque) {
super.update(width, height, isOpaque);
GLES20Canvas.nUpdateTextureLayer(mLayer, width, height, isOpaque, mSurface);
}
@Override
void setOpaque(boolean isOpaque) {
throw new UnsupportedOperationException("Use update(int, int, boolean) instead");
}
@Override
void setTransform(Matrix matrix) {
GLES20Canvas.nSetTextureLayerTransform(mLayer, matrix.native_instance);
}
@Override
void redrawLater(DisplayList displayList, Rect dirtyRect) {
}
}
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