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https://github.com/mozilla/gecko-dev.git
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d548470d96
Only update tiles that intersect with the screen, and asynchronously update invisible tiles over multiple subsequent frames. This has the effect of spreading out non-critical texture-upload over time and removes some juddering on devices that don't support gralloc.
129 lines
4.6 KiB
Java
129 lines
4.6 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* James Willcox <jwillcox@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko.gfx;
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import org.mozilla.gecko.gfx.LayerController;
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import org.mozilla.gecko.gfx.SingleTileLayer;
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import org.mozilla.gecko.GeckoAppShell;
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import android.opengl.GLES11;
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import android.opengl.GLES11Ext;
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import android.graphics.RectF;
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import android.util.Log;
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import javax.microedition.khronos.opengles.GL10;
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/**
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* Encapsulates the logic needed to draw the single-tiled Gecko texture
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*/
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public class WidgetTileLayer extends Layer {
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private static final String LOGTAG = "WidgetTileLayer";
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private int[] mTextureIDs;
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private CairoImage mImage;
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public WidgetTileLayer(CairoImage image) {
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mImage = image;
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}
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protected boolean initialized() { return mTextureIDs != null; }
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@Override
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public IntSize getSize() { return mImage.getSize(); }
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protected void bindAndSetGLParameters() {
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GLES11.glBindTexture(GL10.GL_TEXTURE_2D, mTextureIDs[0]);
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GLES11.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST);
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GLES11.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
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}
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@Override
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protected void finalize() throws Throwable {
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if (mTextureIDs != null)
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TextureReaper.get().add(mTextureIDs);
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}
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@Override
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protected boolean performUpdates(GL10 gl, RenderContext context) {
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super.performUpdates(gl, context);
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if (mTextureIDs == null) {
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mTextureIDs = new int[1];
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GLES11.glGenTextures(1, mTextureIDs, 0);
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}
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bindAndSetGLParameters();
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GeckoAppShell.bindWidgetTexture();
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return true;
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}
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@Override
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public void draw(RenderContext context) {
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// mTextureIDs may be null here during startup if Layer.java's draw method
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// failed to acquire the transaction lock and call performUpdates.
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if (!initialized())
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return;
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GLES11.glBindTexture(GL10.GL_TEXTURE_2D, mTextureIDs[0]);
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RectF bounds;
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int[] cropRect;
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IntSize size = getSize();
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RectF viewport = context.viewport;
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bounds = getBounds(context, new FloatSize(size));
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cropRect = new int[] { 0, size.height, size.width, -size.height };
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bounds.offset(-viewport.left, -viewport.top);
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GLES11.glTexParameteriv(GL10.GL_TEXTURE_2D, GLES11Ext.GL_TEXTURE_CROP_RECT_OES, cropRect,
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0);
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float top = viewport.height() - (bounds.top + bounds.height());
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// There may be errors from a previous GL call, so clear them first because
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// we want to check for one below
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while (GLES11.glGetError() != GLES11.GL_NO_ERROR);
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GLES11Ext.glDrawTexfOES(bounds.left, top, 0.0f, bounds.width(), bounds.height());
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int error = GLES11.glGetError();
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if (error != GLES11.GL_NO_ERROR) {
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Log.i(LOGTAG, "Failed to draw texture: " + error);
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}
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}
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}
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