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.balls; 18 19 20 import android.content.res.Resources; 21 import android.renderscript.*; 22 import android.util.Log; 23 import android.graphics.BitmapFactory; 24 import android.graphics.Bitmap; 25 26 27 public class BallsRS { 28 public static final int PART_COUNT = 4000; 29 30 public BallsRS() { 31 } 32 33 private Resources mRes; 34 private RenderScriptGL mRS; 35 private ScriptC_balls mScript; 36 private ScriptC_ball_physics mPhysicsScript; 37 private ProgramFragment mPFPoints; 38 private ScriptField_Point mPoints; 39 private ScriptField_VpConsts mVpConsts; 40 private ScriptField_BallGrid mGrid; 41 private ScriptField_Ball mBalls; 42 private Allocation mGridCache; 43 44 void updateProjectionMatrices() { 45 mVpConsts = new ScriptField_VpConsts(mRS, 1, 46 Allocation.USAGE_SCRIPT | 47 Allocation.USAGE_GRAPHICS_CONSTANTS); 48 ScriptField_VpConsts.Item i = new ScriptField_VpConsts.Item(); 49 Matrix4f mvp = new Matrix4f(); 50 mvp.loadOrtho(0, mRS.getWidth(), mRS.getHeight(), 0, -1, 1); 51 i.MVP = mvp; 52 mVpConsts.set(i, 0, true); 53 } 54 55 private void createProgramVertex() { 56 updateProjectionMatrices(); 57 58 ProgramVertex.Builder sb = new ProgramVertex.Builder(mRS); 59 String t = "varying vec4 varColor;\n" + 60 "void main() {\n" + 61 " vec4 pos = vec4(0.0, 0.0, 0.0, 1.0);\n" + 62 " pos.xy = ATTRIB_position;\n" + 63 " gl_Position = UNI_MVP * pos;\n" + 64 " varColor = ATTRIB_color;\n" + 65 " gl_PointSize = 12.0;\n" + 66 "}\n"; 67 sb.setShader(t); 68 sb.addConstant(mVpConsts.getType()); 69 sb.addInput(mPoints.getElement()); 70 ProgramVertex pvs = sb.create(); 71 pvs.bindConstants(mVpConsts.getAllocation(), 0); 72 mRS.bindProgramVertex(pvs); 73 } 74 75 private Allocation loadTexture(int id) { 76 BitmapFactory.Options options = new BitmapFactory.Options(); 77 options.inScaled = false; 78 Bitmap bp = BitmapFactory.decodeResource(mRes, id, options); 79 final Allocation allocation = 80 Allocation.createFromBitmap(mRS, bp, 81 Allocation.MipmapControl.MIPMAP_NONE, 82 Allocation.USAGE_GRAPHICS_TEXTURE); 83 return allocation; 84 } 85 86 ProgramStore BLEND_ADD_DEPTH_NONE(RenderScript rs) { 87 ProgramStore.Builder builder = new ProgramStore.Builder(rs); 88 builder.setDepthFunc(ProgramStore.DepthFunc.ALWAYS); 89 builder.setBlendFunc(ProgramStore.BlendSrcFunc.ONE, ProgramStore.BlendDstFunc.ONE); 90 builder.setDitherEnabled(false); 91 builder.setDepthMaskEnabled(false); 92 return builder.create(); 93 } 94 95 private void createPF(int width, int height) { 96 ProgramFragmentFixedFunction.Builder pfb = new ProgramFragmentFixedFunction.Builder(mRS); 97 pfb.setPointSpriteTexCoordinateReplacement(true); 98 pfb.setTexture(ProgramFragmentFixedFunction.Builder.EnvMode.MODULATE, 99 ProgramFragmentFixedFunction.Builder.Format.RGBA, 0); 100 pfb.setVaryingColor(true); 101 mPFPoints = pfb.create(); 102 } 103 104 public void init(RenderScriptGL rs, Resources res, int width, int height) { 105 mRS = rs; 106 mRes = res; 107 108 createPF(width, height); 109 110 mPFPoints.bindTexture(loadTexture(R.drawable.flares), 0); 111 112 mPoints = new ScriptField_Point(mRS, PART_COUNT, Allocation.USAGE_SCRIPT); 113 114 Mesh.AllocationBuilder smb = new Mesh.AllocationBuilder(mRS); 115 smb.addVertexAllocation(mPoints.getAllocation()); 116 smb.addIndexSetType(Mesh.Primitive.POINT); 117 Mesh smP = smb.create(); 118 119 mGrid = ScriptField_BallGrid.create2D(mRS, (width + 99) / 100, (height + 99) / 100); 120 mGridCache = Allocation.createSized(mRS, Element.F32_2(mRS), PART_COUNT); 121 mBalls = new ScriptField_Ball(mRS, PART_COUNT, Allocation.USAGE_SCRIPT); 122 123 mPhysicsScript = new ScriptC_ball_physics(mRS); 124 mPhysicsScript.set_gGridCache(mGridCache); 125 mPhysicsScript.set_gBalls(mBalls.getAllocation()); 126 127 mScript = new ScriptC_balls(mRS); 128 mScript.set_partMesh(smP); 129 mScript.set_physics_script(mPhysicsScript); 130 mScript.bind_point(mPoints); 131 mScript.bind_balls(mBalls); 132 mScript.set_gGrid(mGrid.getAllocation()); 133 mScript.bind_gGridCache(mGridCache); 134 135 mScript.set_gPFPoints(mPFPoints); 136 createProgramVertex(); 137 138 mRS.bindProgramStore(BLEND_ADD_DEPTH_NONE(mRS)); 139 140 mPhysicsScript.set_gMinPos(new Float2(5, 5)); 141 mPhysicsScript.set_gMaxPos(new Float2(width - 5, height - 5)); 142 mPhysicsScript.set_gGrid(mGrid.getAllocation()); 143 144 mScript.invoke_initParts(width, height); 145 146 mRS.bindRootScript(mScript); 147 } 148 149 public void newTouchPosition(float x, float y, float pressure, int id) { 150 mPhysicsScript.invoke_touch(x, y, pressure * mRS.getWidth() / 1280, id); 151 } 152 153 public void setAccel(float x, float y) { 154 mPhysicsScript.set_gGravityVector(new Float2(x, y)); 155 } 156 157 } 158
