1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.rs.fountainfbo; 18 19 import android.content.res.Resources; 20 import android.renderscript.Allocation; 21 import android.renderscript.Element; 22 import android.renderscript.Mesh; 23 import android.renderscript.ProgramFragment; 24 import android.renderscript.ProgramFragmentFixedFunction; 25 import android.renderscript.RenderScriptGL; 26 import android.renderscript.Type; 27 28 public class FountainFboRS { 29 public static final int PART_COUNT = 50000; 30 31 public FountainFboRS() { 32 } 33 34 private Resources mRes; 35 private RenderScriptGL mRS; 36 private ScriptC_fountainfbo mScript; 37 private Allocation mColorBuffer; 38 private ProgramFragment mProgramFragment; 39 private ProgramFragment mTextureProgramFragment; 40 public void init(RenderScriptGL rs, Resources res) { 41 mRS = rs; 42 mRes = res; 43 44 ScriptField_Point points = new ScriptField_Point(mRS, PART_COUNT); 45 46 Mesh.AllocationBuilder smb = new Mesh.AllocationBuilder(mRS); 47 smb.addVertexAllocation(points.getAllocation()); 48 smb.addIndexSetType(Mesh.Primitive.POINT); 49 Mesh sm = smb.create(); 50 51 mScript = new ScriptC_fountainfbo(mRS, mRes, R.raw.fountainfbo); 52 mScript.set_partMesh(sm); 53 mScript.bind_point(points); 54 55 ProgramFragmentFixedFunction.Builder pfb = new ProgramFragmentFixedFunction.Builder(rs); 56 pfb.setVaryingColor(true); 57 mProgramFragment = pfb.create(); 58 mScript.set_gProgramFragment(mProgramFragment); 59 60 /* Second fragment shader to use a texture (framebuffer object) to draw with */ 61 pfb.setTexture(ProgramFragmentFixedFunction.Builder.EnvMode.REPLACE, 62 ProgramFragmentFixedFunction.Builder.Format.RGBA, 0); 63 64 /* Set the fragment shader in the Renderscript runtime */ 65 mTextureProgramFragment = pfb.create(); 66 mScript.set_gTextureProgramFragment(mTextureProgramFragment); 67 68 /* Create the allocation for the color buffer */ 69 Type.Builder colorBuilder = new Type.Builder(mRS, Element.RGBA_8888(mRS)); 70 colorBuilder.setX(256).setY(256); 71 mColorBuffer = Allocation.createTyped(mRS, colorBuilder.create(), 72 Allocation.USAGE_GRAPHICS_TEXTURE | 73 Allocation.USAGE_GRAPHICS_RENDER_TARGET); 74 75 /* Set the allocation in the Renderscript runtime */ 76 mScript.set_gColorBuffer(mColorBuffer); 77 78 mRS.bindRootScript(mScript); 79 } 80 81 boolean holdingColor[] = new boolean[10]; 82 public void newTouchPosition(float x, float y, float pressure, int id) { 83 if (id >= holdingColor.length) { 84 return; 85 } 86 int rate = (int)(pressure * pressure * 500.f); 87 if (rate > 500) { 88 rate = 500; 89 } 90 if (rate > 0) { 91 mScript.invoke_addParticles(rate, x, y, id, !holdingColor[id]); 92 holdingColor[id] = true; 93 } else { 94 holdingColor[id] = false; 95 } 96 97 } 98 } 99 100
