/*
* Copyright (C) 2012 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.android.testapp;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Vector;
import com.android.scenegraph.*;
import com.android.scenegraph.SceneManager.SceneLoadedCallback;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.renderscript.*;
import android.renderscript.Program.TextureType;
import android.util.Log;
// This is where the scenegraph and the rendered objects are initialized and used
public class SimpleAppRS {
SceneManager mSceneManager;
RenderScriptGL mRS;
Resources mRes;
Scene mScene;
Mesh mSimpleMesh;
Mesh mSphereMesh;
Mesh mCubeMesh;
public void init(RenderScriptGL rs, Resources res, int width, int height) {
mRS = rs;
mRes = res;
mSceneManager = SceneManager.getInstance();
mSceneManager.initRS(mRS, mRes, width, height);
mScene = new Scene();
setupGeometry();
setupColoredQuad();
setupTexturedQuad();
setupShadedGeometry();
setupCamera();
setupRenderPass();
mSceneManager.setActiveScene(mScene);
mScene.initRS();
mRS.bindRootScript(mSceneManager.getRenderLoop());
}
private void setupGeometry() {
Mesh.TriangleMeshBuilder tmb = new Mesh.TriangleMeshBuilder(mRS, 3,
Mesh.TriangleMeshBuilder.TEXTURE_0);
// Create four vertices with texture coordinates
tmb.setTexture(0.0f, 1.0f).addVertex(-1.0f, 1.0f, 0.0f);
tmb.setTexture(0.0f, 0.0f).addVertex(-1.0f, -1.0f, 0.0f);
tmb.setTexture(1.0f, 0.0f).addVertex(1.0f, -1.0f, 0.0f);
tmb.setTexture(1.0f, 1.0f).addVertex(1.0f, 1.0f, 0.0f);
tmb.addTriangle(0, 1, 2);
tmb.addTriangle(2, 3, 0);
mSimpleMesh = tmb.create(true);
// Load a file that constains two pieces of geometry, a sphere and a cube
FileA3D model = FileA3D.createFromResource(mRS, mRes, R.raw.unit_obj);
for (int i = 0; i < model.getIndexEntryCount(); i ++) {
FileA3D.IndexEntry entry = model.getIndexEntry(i);
if (entry != null && entry.getName().equals("CubeMesh")) {
mCubeMesh = entry.getMesh();
} else if (entry != null && entry.getName().equals("SphereMesh")) {
mSphereMesh = entry.getMesh();
}
}
}
private void setupColoredQuad() {
// Built-in shader that provides position, texcoord and normal
VertexShader genericV = SceneManager.getDefaultVS();
// Built-in shader that displays a color
FragmentShader colorF = SceneManager.getColorFS();
RenderState colorRS = new RenderState(genericV, colorF, null, null);
// Draw a simple colored quad
Renderable quad = mScene.appendNewRenderable();
quad.setMesh(mSimpleMesh);
// Our shader has a constant input called "color"
// This tells the scenegraph to assign the following float3 to that input
quad.appendSourceParams(new Float4Param("color", 0.2f, 0.3f, 0.4f));
quad.setRenderState(colorRS);
}
private void setupTexturedQuad() {
// Built-in shader that provides position, texcoord and normal
VertexShader genericV = SceneManager.getDefaultVS();
// Built-in shader that displays a texture
FragmentShader textureF = SceneManager.getTextureFS();
// We want to use transparency based on the alpha channel of the texture
ProgramStore alphaBlend = ProgramStore.BLEND_ALPHA_DEPTH_TEST(mRS);
RenderState texRS = new RenderState(genericV, textureF, alphaBlend, null);
// Draw a textured quad
Renderable quad = mScene.appendNewRenderable();
quad.setMesh(mSimpleMesh);
// Make a transform to position the quad
CompoundTransform t = mScene.appendNewCompoundTransform();
t.addTranslate("position", new Float3(2, 2, 0));
quad.setTransform(t);
// Our fragment shader has a constant texture input called "color"
// This will assign an icon from drawables to that input
quad.appendSourceParams(new TextureParam("color", new Texture2D(R.drawable.icon)));
quad.setRenderState(texRS);
}
private FragmentShader createLambertShader() {
// Describe what constant inputs our shader wants
Element.Builder b = new Element.Builder(mRS);
b.add(Element.F32_4(mRS), "cameraPos");
// Create a shader from a text file in resources
FragmentShader.Builder fb = new FragmentShader.Builder(mRS);
// Tell the shader what constants we want
fb.setShaderConst(new Type.Builder(mRS, b.create()).setX(1).create());
// Shader code location
fb.setShader(mRes, R.raw.diffuse);
// We want a texture called diffuse on our shader
fb.addTexture(TextureType.TEXTURE_2D, "diffuse");
FragmentShader shader = fb.create();
mScene.appendShader(shader);
return shader;
}
private void setupShadedGeometry() {
// Built-in shader that provides position, texcoord and normal
VertexShader genericV = SceneManager.getDefaultVS();
// Custom shader
FragmentShader diffuseF = createLambertShader();
RenderState diffuseRS = new RenderState(genericV, diffuseF, null, null);
// Draw a sphere
Renderable sphere = mScene.appendNewRenderable();
// Use the sphere geometry loaded earlier
sphere.setMesh(mSphereMesh);
// Make a transform to position the sphere
CompoundTransform t = mScene.appendNewCompoundTransform();
t.addTranslate("position", new Float3(-1, 2, 3));
t.addScale("scale", new Float3(1.4f, 1.4f, 1.4f));
sphere.setTransform(t);
// Tell the renderable which texture to use when we draw
// This will mean a texture param in the shader called "diffuse"
// will be assigned a texture called red.jpg
sphere.appendSourceParams(new TextureParam("diffuse", new Texture2D("", "red.jpg")));
sphere.setRenderState(diffuseRS);
// Draw a cube
Renderable cube = mScene.appendNewRenderable();
cube.setMesh(mCubeMesh);
t = mScene.appendNewCompoundTransform();
t.addTranslate("position", new Float3(-2, -2.1f, 0));
t.addRotate("rotateX", new Float3(1, 0, 0), 30);
t.addRotate("rotateY", new Float3(0, 1, 0), 30);
t.addScale("scale", new Float3(2, 2, 2));
cube.setTransform(t);
cube.appendSourceParams(new TextureParam("diffuse", new Texture2D("", "orange.jpg")));
cube.setRenderState(diffuseRS);
}
private void setupCamera() {
Camera camera = mScene.appendNewCamera();
camera.setFar(200);
camera.setNear(0.1f);
camera.setFOV(60);
CompoundTransform cameraTransform = mScene.appendNewCompoundTransform();
cameraTransform.addTranslate("camera", new Float3(0, 0, 10));
camera.setTransform(cameraTransform);
}
private void setupRenderPass() {
RenderPass mainPass = mScene.appendNewRenderPass();
mainPass.setClearColor(new Float4(1.0f, 1.0f, 1.0f, 1.0f));
mainPass.setShouldClearColor(true);
mainPass.setClearDepth(1.0f);
mainPass.setShouldClearDepth(true);
mainPass.setCamera(mScene.getCameras().get(0));
ArrayList<RenderableBase> allRender = mScene.getRenderables();
for (RenderableBase renderable : allRender) {
mainPass.appendRenderable((Renderable)renderable);
}
}
}
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