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
17package com.android.scenegraph;
18
19import java.lang.Math;
20import java.util.ArrayList;
21import java.util.HashMap;
22
23import com.android.scenegraph.SceneGraphBase;
24import com.android.scenegraph.ShaderParam;
25
26import android.renderscript.*;
27import android.renderscript.ProgramFragment.Builder;
28import android.util.Log;
29
30/**
31 * @hide
32 */
33public 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
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
54    public void appendSourceParams(ShaderParam p) {
55        mSourceParams.put(p.getParamName(), p);
56    }
57
58    public Type getObjectConstants() {
59        return mPerObjConstants;
60    }
61
62    public Type getShaderConstants() {
63        return mPerObjConstants;
64    }
65
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