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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.rs.balls;
import android.content.res.Resources;
import android.renderscript.*;
import android.util.Log;
public class BallsRS {
public static final int PART_COUNT = 4000;
public BallsRS() {
}
private Resources mRes;
private RenderScriptGL mRS;
private ScriptC_balls mScript;
private ScriptC_ball_physics mPhysicsScript;
private ProgramFragment mPFPoints;
private ScriptField_Point mPoints;
private ScriptField_VpConsts mVpConsts;
private ScriptField_BallGrid mGrid;
private ScriptField_Ball mBalls;
private Allocation mGridCache;
void updateProjectionMatrices() {
mVpConsts = new ScriptField_VpConsts(mRS, 1,
Allocation.USAGE_SCRIPT |
Allocation.USAGE_GRAPHICS_CONSTANTS);
ScriptField_VpConsts.Item i = new ScriptField_VpConsts.Item();
Matrix4f mvp = new Matrix4f();
mvp.loadOrtho(0, mRS.getWidth(), mRS.getHeight(), 0, -1, 1);
i.MVP = mvp;
mVpConsts.set(i, 0, true);
}
private void createProgramVertex() {
updateProjectionMatrices();
ProgramVertex.Builder sb = new ProgramVertex.Builder(mRS);
String t = "varying vec4 varColor;\n" +
"void main() {\n" +
" vec4 pos = vec4(0.0, 0.0, 0.0, 1.0);\n" +
" pos.xy = ATTRIB_position;\n" +
" gl_Position = UNI_MVP * pos;\n" +
" varColor = ATTRIB_color;\n" +
" gl_PointSize = 12.0;\n" +
"}\n";
sb.setShader(t);
sb.addConstant(mVpConsts.getType());
sb.addInput(mPoints.getElement());
ProgramVertex pvs = sb.create();
pvs.bindConstants(mVpConsts.getAllocation(), 0);
mRS.bindProgramVertex(pvs);
}
private Allocation loadTexture(int id) {
final Allocation allocation =
Allocation.createFromBitmapResource(mRS, mRes,
id, Allocation.MipmapControl.MIPMAP_NONE,
Allocation.USAGE_GRAPHICS_TEXTURE);
return allocation;
}
ProgramStore BLEND_ADD_DEPTH_NONE(RenderScript rs) {
ProgramStore.Builder builder = new ProgramStore.Builder(rs);
builder.setDepthFunc(ProgramStore.DepthFunc.ALWAYS);
builder.setBlendFunc(ProgramStore.BlendSrcFunc.ONE, ProgramStore.BlendDstFunc.ONE);
builder.setDitherEnabled(false);
builder.setDepthMaskEnabled(false);
return builder.create();
}
private void createPF(int width, int height) {
ProgramFragmentFixedFunction.Builder pfb = new ProgramFragmentFixedFunction.Builder(mRS);
pfb.setPointSpriteTexCoordinateReplacement(true);
pfb.setTexture(ProgramFragmentFixedFunction.Builder.EnvMode.MODULATE,
ProgramFragmentFixedFunction.Builder.Format.RGBA, 0);
pfb.setVaryingColor(true);
mPFPoints = pfb.create();
}
public void init(RenderScriptGL rs, Resources res, int width, int height) {
mRS = rs;
mRes = res;
createPF(width, height);
mPFPoints.bindTexture(loadTexture(R.drawable.flares), 0);
mPoints = new ScriptField_Point(mRS, PART_COUNT, Allocation.USAGE_SCRIPT);
Mesh.AllocationBuilder smb = new Mesh.AllocationBuilder(mRS);
smb.addVertexAllocation(mPoints.getAllocation());
smb.addIndexSetType(Mesh.Primitive.POINT);
Mesh smP = smb.create();
mGrid = ScriptField_BallGrid.create2D(mRS, (width + 99) / 100, (height + 99) / 100);
mGridCache = Allocation.createSized(mRS, Element.F32_2(mRS), PART_COUNT);
mBalls = new ScriptField_Ball(mRS, PART_COUNT, Allocation.USAGE_SCRIPT);
mPhysicsScript = new ScriptC_ball_physics(mRS);
mPhysicsScript.set_gGridCache(mGridCache);
mPhysicsScript.set_gBalls(mBalls.getAllocation());
mScript = new ScriptC_balls(mRS);
mScript.set_partMesh(smP);
mScript.set_physics_script(mPhysicsScript);
mScript.bind_point(mPoints);
mScript.bind_balls(mBalls);
mScript.set_gGrid(mGrid.getAllocation());
mScript.bind_gGridCache(mGridCache);
mScript.set_gPFPoints(mPFPoints);
createProgramVertex();
mRS.bindProgramStore(BLEND_ADD_DEPTH_NONE(mRS));
mPhysicsScript.set_gMinPos(new Float2(5, 5));
mPhysicsScript.set_gMaxPos(new Float2(width - 5, height - 5));
mPhysicsScript.set_gGrid(mGrid.getAllocation());
mScript.invoke_initParts(width, height);
mRS.bindRootScript(mScript);
}
public void newTouchPosition(float x, float y, float pressure, int id) {
mPhysicsScript.invoke_touch(x, y, pressure * mRS.getWidth() / 1280, id);
}
public void setAccel(float x, float y) {
mPhysicsScript.set_gGravityVector(new Float2(x, y));
}
}
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