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https://gitlab.winehq.org/wine/wine-gecko.git
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cef8ea399b
Instead of tying the tile-buffer in MultiTileLayer directly to the back-buffer of the page, make sure rendering is always aligned to the tile grid and use tiles on-demand. This makes better use of tiles when panning/zooming, and opens up the route for further optimisations.
124 lines
4.8 KiB
Java
124 lines
4.8 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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* Patrick Walton <pcwalton@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.CairoImage;
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import org.mozilla.gecko.gfx.CairoUtils;
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import org.mozilla.gecko.gfx.IntSize;
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import org.mozilla.gecko.gfx.LayerController;
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import org.mozilla.gecko.gfx.TileLayer;
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import android.graphics.PointF;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.opengl.GLES11;
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import android.opengl.GLES11Ext;
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import android.util.Log;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.FloatBuffer;
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import javax.microedition.khronos.opengles.GL10;
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/**
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* Encapsulates the logic needed to draw a single textured tile.
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*
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* TODO: Repeating textures really should be their own type of layer.
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*/
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public class SingleTileLayer extends TileLayer {
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private static final String LOGTAG = "GeckoSingleTileLayer";
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public SingleTileLayer(CairoImage image) { this(false, image); }
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public SingleTileLayer(boolean repeat, CairoImage image) {
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super(repeat, image);
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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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// If the texture contents is entirely invalid, we have nothing to draw.
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Rect validTexture = getValidTextureArea();
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if (validTexture.isEmpty())
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return;
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GLES11.glBindTexture(GL10.GL_TEXTURE_2D, getTextureID());
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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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if (repeats()) {
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if (!validTexture.equals(new Rect(0, 0, size.width, size.height))) {
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Log.e(LOGTAG, "Drawing partial repeating textures is unsupported!");
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}
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bounds = new RectF(0.0f, 0.0f, viewport.width(), viewport.height());
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int width = Math.round(viewport.width());
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int height = Math.round(-viewport.height());
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cropRect = new int[] { 0, size.height, width, height };
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} else {
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bounds = getBounds(context, new FloatSize(size));
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float scaleFactor = bounds.width() / (float)size.width;
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bounds.left += validTexture.left * scaleFactor;
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bounds.top += validTexture.top * scaleFactor;
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bounds.right -= (size.width - validTexture.right) * scaleFactor;
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bounds.bottom -= (size.height - validTexture.bottom) * scaleFactor;
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cropRect = new int[] { validTexture.left,
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validTexture.bottom,
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validTexture.width(),
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-validTexture.height() };
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}
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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 height = bounds.height();
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float left = bounds.left - viewport.left;
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float top = viewport.height() - (bounds.top + height - viewport.top);
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GLES11Ext.glDrawTexfOES(left, top, 0.0f, bounds.width(), height);
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}
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}
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