| |
| package com.android.fountain; |
| |
| import android.content.res.Resources; |
| import android.renderscript.*; |
| import android.util.Log; |
| |
| public class ScriptField_Point |
| extends android.renderscript.Script.FieldBase |
| { |
| |
| static public class Item { |
| Item() { |
| delta = new Float2(); |
| pos = new Float2(); |
| color = new Short4(); |
| } |
| |
| public static final int sizeof = (5*4); |
| Float2 delta; |
| Float2 pos; |
| Short4 color; |
| } |
| private Item mItemArray[]; |
| |
| |
| public ScriptField_Point(RenderScript rs, int count) { |
| // Allocate a pack/unpack buffer |
| mIOBuffer = new FieldPacker(Item.sizeof * count); |
| mItemArray = new Item[count]; |
| |
| Element.Builder eb = new Element.Builder(rs); |
| eb.add(Element.F32_2(rs), "delta"); |
| eb.add(Element.F32_2(rs), "position"); |
| eb.add(Element.U8_4(rs), "color"); |
| mElement = eb.create(); |
| |
| init(rs, count); |
| } |
| |
| private void copyToArray(Item i, int index) { |
| mIOBuffer.reset(index * Item.sizeof); |
| mIOBuffer.addF32(i.delta); |
| mIOBuffer.addF32(i.pos); |
| mIOBuffer.addU8(i.color); |
| } |
| |
| public void set(Item i, int index, boolean copyNow) { |
| mItemArray[index] = i; |
| if (copyNow) { |
| copyToArray(i, index); |
| mAllocation.subData1D(index * Item.sizeof, Item.sizeof, mIOBuffer.getData()); |
| } |
| } |
| |
| public void copyAll() { |
| for (int ct=0; ct < mItemArray.length; ct++) { |
| copyToArray(mItemArray[ct], ct); |
| } |
| mAllocation.data(mIOBuffer.getData()); |
| } |
| |
| |
| private FieldPacker mIOBuffer; |
| |
| |
| } |