mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
6d06b90bbe
This backs out changes d8fc13006aa4, ddde7a49f6f7, 34b1cc9454d2 and 8919c54229e1, leaving in some initialisation fixes that were introduced when rebasing. This work may be re-applied at a later date.
304 lines
10 KiB
Java
304 lines
10 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) 2011-2012
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Lord <chrislord.net@gmail.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.IntSize;
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import org.mozilla.gecko.gfx.SingleTileLayer;
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import android.graphics.Point;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.graphics.Region;
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import android.util.Log;
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import java.nio.ByteBuffer;
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import java.util.ArrayList;
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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 layer made of multiple tiles.
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*
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* TODO: Support repeating.
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*/
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public class MultiTileLayer extends Layer {
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private static final String LOGTAG = "GeckoMultiTileLayer";
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private final CairoImage mImage;
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private IntSize mTileSize;
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private IntSize mBufferSize;
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private final ArrayList<SubTile> mTiles;
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public MultiTileLayer(CairoImage image, IntSize tileSize) {
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super();
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mImage = image;
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mTileSize = tileSize;
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mBufferSize = new IntSize(0, 0);
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mTiles = new ArrayList<SubTile>();
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}
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public void invalidate(Rect dirtyRect) {
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if (!inTransaction()) {
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throw new RuntimeException("invalidate() is only valid inside a transaction");
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}
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for (SubTile layer : mTiles) {
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IntSize tileSize = layer.getSize();
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Rect tileRect = new Rect(layer.x, layer.y, layer.x + tileSize.width, layer.y + tileSize.height);
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if (tileRect.intersect(dirtyRect)) {
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tileRect.offset(-layer.x, -layer.y);
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layer.invalidate(tileRect);
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}
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}
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}
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public void invalidate() {
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for (SubTile layer : mTiles) {
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layer.invalidate();
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}
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}
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@Override
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public IntSize getSize() {
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return mImage.getSize();
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}
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private void validateTiles() {
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IntSize size = getSize();
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if (size.equals(mBufferSize)) {
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return;
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}
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// Regenerate tiles
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mTiles.clear();
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int offset = 0;
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final int format = mImage.getFormat();
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final ByteBuffer buffer = mImage.getBuffer().slice();
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final int bpp = CairoUtils.bitsPerPixelForCairoFormat(format) / 8;
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for (int y = 0; y < size.height; y += mTileSize.height) {
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for (int x = 0; x < size.width; x += mTileSize.width) {
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// Create a CairoImage implementation that returns a
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// tile from the parent CairoImage. It's assumed that
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// the tiles are stored in series.
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final IntSize layerSize =
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new IntSize(Math.min(mTileSize.width, size.width - x),
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Math.min(mTileSize.height, size.height - y));
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final int tileOffset = offset;
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CairoImage subImage = new CairoImage() {
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@Override
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public ByteBuffer getBuffer() {
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// Create a ByteBuffer that shares the data of the original
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// buffer, but is positioned and limited so that only the
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// tile data is accessible.
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buffer.position(tileOffset);
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ByteBuffer tileBuffer = buffer.slice();
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tileBuffer.limit(layerSize.getArea() * bpp);
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return tileBuffer;
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}
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@Override
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public IntSize getSize() {
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return layerSize;
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}
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@Override
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public int getFormat() {
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return format;
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}
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};
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mTiles.add(new SubTile(subImage, x, y));
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offset += layerSize.getArea() * bpp;
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}
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}
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// Set tile origins and resolution
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refreshTileMetrics(getOrigin(), getResolution(), false);
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mBufferSize = size;
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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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validateTiles();
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// Iterate over the tiles and decide which ones we'll be drawing
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int dirtyTiles = 0;
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boolean screenUpdateDone = false;
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SubTile firstDirtyTile = null;
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for (SubTile layer : mTiles) {
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// First do a non-texture update to make sure coordinates are
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// up-to-date.
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boolean invalid = layer.getSkipTextureUpdate();
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layer.setSkipTextureUpdate(true);
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layer.performUpdates(gl, context);
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RectF layerBounds = layer.getBounds(context, new FloatSize(layer.getSize()));
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boolean isDirty = layer.isDirty();
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if (isDirty) {
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if (!RectF.intersects(layerBounds, context.viewport)) {
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if (firstDirtyTile == null)
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firstDirtyTile = layer;
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dirtyTiles ++;
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invalid = true;
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} else {
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// This tile intersects with the screen and is dirty,
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// update it immediately.
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layer.setSkipTextureUpdate(false);
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screenUpdateDone = true;
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layer.performUpdates(gl, context);
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invalid = false;
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}
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}
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// We use the SkipTextureUpdate flag as a marker of a tile's
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// validity. This is required, as sometimes layers are drawn
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// without updating first, and we mustn't draw tiles that have
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// been marked as invalid that we haven't updated.
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layer.setSkipTextureUpdate(invalid);
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}
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// Now if no tiles that intersect with the screen were updated, update
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// a single tile that doesn't (if there are any). This has the effect
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// of spreading out non-critical texture upload over time, and smoothing
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// upload-related hitches.
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if (!screenUpdateDone && firstDirtyTile != null) {
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firstDirtyTile.setSkipTextureUpdate(false);
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firstDirtyTile.performUpdates(gl, context);
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dirtyTiles --;
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}
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return (dirtyTiles == 0);
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}
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private void refreshTileMetrics(Point origin, float resolution, boolean inTransaction) {
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IntSize size = getSize();
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for (SubTile layer : mTiles) {
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if (!inTransaction) {
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layer.beginTransaction(null);
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}
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if (origin != null) {
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layer.setOrigin(new Point(origin.x + layer.x, origin.y + layer.y));
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}
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if (resolution >= 0.0f) {
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layer.setResolution(resolution);
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}
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if (!inTransaction) {
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layer.endTransaction();
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}
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}
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}
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@Override
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public void setOrigin(Point newOrigin) {
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super.setOrigin(newOrigin);
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refreshTileMetrics(newOrigin, -1, true);
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}
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@Override
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public void setResolution(float newResolution) {
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super.setResolution(newResolution);
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refreshTileMetrics(null, newResolution, true);
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}
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@Override
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public void beginTransaction(LayerView aView) {
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super.beginTransaction(aView);
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for (SubTile layer : mTiles) {
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layer.beginTransaction(aView);
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}
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}
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@Override
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public void endTransaction() {
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for (SubTile layer : mTiles) {
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layer.endTransaction();
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}
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super.endTransaction();
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}
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@Override
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public void draw(RenderContext context) {
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for (SubTile layer : mTiles) {
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// We use the SkipTextureUpdate flag as a validity flag. If it's false,
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// the contents of this tile are invalid and we shouldn't draw it.
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if (layer.getSkipTextureUpdate())
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continue;
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// Avoid work, only draw tiles that intersect with the viewport
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RectF layerBounds = layer.getBounds(context, new FloatSize(layer.getSize()));
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if (RectF.intersects(layerBounds, context.viewport))
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layer.draw(context);
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}
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}
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@Override
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public Region getValidRegion(RenderContext context) {
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Region validRegion = new Region();
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for (SubTile tile : mTiles) {
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if (tile.getSkipTextureUpdate())
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continue;
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validRegion.op(tile.getValidRegion(context), Region.Op.UNION);
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}
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return validRegion;
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}
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class SubTile extends SingleTileLayer {
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public int x;
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public int y;
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public SubTile(CairoImage mImage, int mX, int mY) {
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super(mImage);
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x = mX;
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y = mY;
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}
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}
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}
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