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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.fountainfbo;
import android.content.res.Resources;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.Mesh;
import android.renderscript.ProgramFragment;
import android.renderscript.ProgramFragmentFixedFunction;
import android.renderscript.RenderScriptGL;
import android.renderscript.Type;
public class FountainFboRS {
public static final int PART_COUNT = 50000;
public FountainFboRS() {
}
private Resources mRes;
private RenderScriptGL mRS;
private ScriptC_fountainfbo mScript;
private Allocation mColorBuffer;
private ProgramFragment mProgramFragment;
private ProgramFragment mTextureProgramFragment;
public void init(RenderScriptGL rs, Resources res) {
mRS = rs;
mRes = res;
ScriptField_Point points = new ScriptField_Point(mRS, PART_COUNT);
Mesh.AllocationBuilder smb = new Mesh.AllocationBuilder(mRS);
smb.addVertexAllocation(points.getAllocation());
smb.addIndexSetType(Mesh.Primitive.POINT);
Mesh sm = smb.create();
mScript = new ScriptC_fountainfbo(mRS, mRes, R.raw.fountainfbo);
mScript.set_partMesh(sm);
mScript.bind_point(points);
ProgramFragmentFixedFunction.Builder pfb = new ProgramFragmentFixedFunction.Builder(rs);
pfb.setVaryingColor(true);
mProgramFragment = pfb.create();
mScript.set_gProgramFragment(mProgramFragment);
/* Second fragment shader to use a texture (framebuffer object) to draw with */
pfb.setTexture(ProgramFragmentFixedFunction.Builder.EnvMode.REPLACE,
ProgramFragmentFixedFunction.Builder.Format.RGBA, 0);
/* Set the fragment shader in the Renderscript runtime */
mTextureProgramFragment = pfb.create();
mScript.set_gTextureProgramFragment(mTextureProgramFragment);
/* Create the allocation for the color buffer */
Type.Builder colorBuilder = new Type.Builder(mRS, Element.RGBA_8888(mRS));
colorBuilder.setX(256).setY(256);
mColorBuffer = Allocation.createTyped(mRS, colorBuilder.create(),
Allocation.USAGE_GRAPHICS_TEXTURE |
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
/* Set the allocation in the Renderscript runtime */
mScript.set_gColorBuffer(mColorBuffer);
mRS.bindRootScript(mScript);
}
boolean holdingColor[] = new boolean[10];
public void newTouchPosition(float x, float y, float pressure, int id) {
if (id >= holdingColor.length) {
return;
}
int rate = (int)(pressure * pressure * 500.f);
if (rate > 500) {
rate = 500;
}
if (rate > 0) {
mScript.invoke_addParticles(rate, x, y, id, !holdingColor[id]);
holdingColor[id] = true;
} else {
holdingColor[id] = false;
}
}
}
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