Edit C:\Program Files\Java\jdk1.8.0_121\com\sun\prism\sw\SWTexturePool.java

/*
 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package com.sun.prism.sw;

import com.sun.prism.PixelFormat;
import com.sun.prism.impl.BaseResourcePool;
import com.sun.prism.impl.PrismSettings;
import com.sun.prism.impl.TextureResourcePool;

class SWTexturePool extends BaseResourcePool<SWTexture>
    implements TextureResourcePool<SWTexture>
{
    static final SWTexturePool instance = new SWTexturePool();

private static long maxVram() {
        long heapmax = Runtime.getRuntime().maxMemory();
        long setmax = PrismSettings.maxVram;
        return Math.min(heapmax / 4, setmax);
    }

private static long targetVram() {
        long max = maxVram();
        return Math.min(max / 2, PrismSettings.targetVram);
    }

private SWTexturePool() {
        super(null, targetVram(), maxVram());
    }

@Override
    public long used() {
//        long heapfree = Runtime.getRuntime().freeMemory();
//        long managedfree = max() - managed();
//        return max() - Math.min(heapfree, managedfree);
        return 0;
    }

@Override
    public long size(SWTexture resource) {
        long size = resource.getPhysicalWidth();
        size *= resource.getPhysicalHeight();
        if (resource instanceof SWArgbPreTexture) {
            size *= 4L;
        }
        return size;
    }

@Override
    public long estimateTextureSize(int width, int height, PixelFormat format) {
        switch (format) {
            case BYTE_ALPHA:
                return ((long) width) * ((long) height);
            default:
                return ((long) width) * ((long) height) * 4L;
        }
    }

@Override
    public long estimateRTTextureSize(int width, int height, boolean hasDepth) {
        return ((long) width) * ((long) height) * 4L;
    }
}

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