1 /*
2  * Copyright (C) 2011 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.android.scenegraph;
18 
19 import java.lang.Math;
20 import java.util.ArrayList;
21 import java.util.HashMap;
22 
23 import com.android.scenegraph.SceneGraphBase;
24 import com.android.scenegraph.ShaderParam;
25 
26 import android.renderscript.*;
27 import android.renderscript.ProgramFragment.Builder;
28 import android.util.Log;
29 
30 /**
31  * @hide
32  */
33 public abstract class Shader extends SceneGraphBase {
34     protected Type mPerObjConstants;
35     protected Type mPerShaderConstants;
36 
37     protected HashMap<String, ShaderParam> mSourceParams;
38     protected ArrayList<String> mShaderTextureNames;
39     protected ArrayList<Program.TextureType > mShaderTextureTypes;
40     protected ArrayList<String> mTextureNames;
41     protected ArrayList<Program.TextureType > mTextureTypes;
42 
43     protected Allocation mConstantBuffer;
44     protected ScriptField_ShaderParam_s mConstantBufferParams;
45 
Shader()46     public Shader() {
47         mSourceParams = new HashMap<String, ShaderParam>();
48         mShaderTextureNames = new ArrayList<String>();
49         mShaderTextureTypes = new ArrayList<Program.TextureType>();
50         mTextureNames = new ArrayList<String>();
51         mTextureTypes = new ArrayList<Program.TextureType>();
52     }
53 
appendSourceParams(ShaderParam p)54     public void appendSourceParams(ShaderParam p) {
55         mSourceParams.put(p.getParamName(), p);
56     }
57 
getObjectConstants()58     public Type getObjectConstants() {
59         return mPerObjConstants;
60     }
61 
getShaderConstants()62     public Type getShaderConstants() {
63         return mPerObjConstants;
64     }
65 
linkConstants(RenderScriptGL rs)66     void linkConstants(RenderScriptGL rs) {
67         if (mPerShaderConstants == null) {
68             return;
69         }
70 
71         Element constElem = mPerShaderConstants.getElement();
72         mConstantBufferParams  = ShaderParam.fillInParams(constElem, mSourceParams, null);
73 
74         mConstantBuffer = Allocation.createTyped(rs, mPerShaderConstants);
75     }
76 }
77