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/*
* Copyright (C) 2011 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.scenegraph;
import java.lang.Math;
import java.util.ArrayList;
import java.util.HashMap;
import com.android.scenegraph.SceneManager;
import com.android.scenegraph.Transform;
import android.renderscript.Element;
import android.renderscript.Matrix4f;
import android.renderscript.ProgramFragment;
import android.renderscript.ProgramStore;
import android.renderscript.ProgramVertex;
import android.renderscript.RenderScriptGL;
import android.util.Log;
/**
* @hide
*/
public abstract class ShaderParam extends SceneGraphBase {
static final String cameraPos = "cameraPos";
static final String cameraDir = "cameraDir";
static final String lightColor = "lightColor";
static final String lightPos = "lightPos";
static final String lightDir = "lightDir";
static final String view = "view";
static final String proj = "proj";
static final String viewProj = "viewProj";
static final String model = "model";
static final String modelView = "modelView";
static final String modelViewProj = "modelViewProj";
static final long sMaxTimeStamp = 0xffffffffL;
ScriptField_ShaderParamData_s.Item mData;
ScriptField_ShaderParamData_s mField;
String mParamName;
Camera mCamera;
static ScriptField_ShaderParam_s fillInParams(Element constantElem,
HashMap<String, ShaderParam> sourceParams,
Transform transform) {
RenderScriptGL rs = SceneManager.getRS();
ArrayList<ScriptField_ShaderParam_s.Item> paramList;
paramList = new ArrayList<ScriptField_ShaderParam_s.Item>();
int subElemCount = constantElem.getSubElementCount();
for (int i = 0; i < subElemCount; i ++) {
String inputName = constantElem.getSubElementName(i);
int offset = constantElem.getSubElementOffsetBytes(i);
ShaderParam matchingParam = sourceParams.get(inputName);
Element subElem = constantElem.getSubElement(i);
// Make one if it's not there
if (matchingParam == null) {
if (subElem.getDataType() == Element.DataType.FLOAT_32) {
matchingParam = new Float4Param(inputName, 0.5f, 0.5f, 0.5f, 0.5f);
} else if (subElem.getDataType() == Element.DataType.MATRIX_4X4) {
TransformParam trParam = new TransformParam(inputName);
trParam.setTransform(transform);
matchingParam = trParam;
}
}
ScriptField_ShaderParam_s.Item paramRS = new ScriptField_ShaderParam_s.Item();
paramRS.bufferOffset = offset;
paramRS.transformTimestamp = 0;
paramRS.dataTimestamp = 0;
paramRS.data = matchingParam.getRSData().getAllocation();
if (subElem.getDataType() == Element.DataType.FLOAT_32) {
paramRS.float_vecSize = subElem.getVectorSize();
}
paramList.add(paramRS);
}
ScriptField_ShaderParam_s rsParams = null;
int paramCount = paramList.size();
if (paramCount != 0) {
rsParams = new ScriptField_ShaderParam_s(rs, paramCount);
for (int i = 0; i < paramCount; i++) {
rsParams.set(paramList.get(i), i, false);
}
rsParams.copyAll();
}
return rsParams;
}
public ShaderParam(String name) {
mParamName = name;
mData = new ScriptField_ShaderParamData_s.Item();
}
public String getParamName() {
return mParamName;
}
public void setCamera(Camera c) {
mCamera = c;
if (mField != null) {
mData.camera = mCamera.getRSData().getAllocation();
mField.set_camera(0, mData.camera, true);
}
}
protected void incTimestamp() {
if (mField != null) {
mData.timestamp ++;
mData.timestamp %= sMaxTimeStamp;
mField.set_timestamp(0, mData.timestamp, true);
}
}
abstract void initLocalData();
public ScriptField_ShaderParamData_s getRSData() {
if (mField != null) {
return mField;
}
RenderScriptGL rs = SceneManager.getRS();
mField = new ScriptField_ShaderParamData_s(rs, 1);
if (mParamName != null) {
mData.paramName = SceneManager.getCachedAlloc(mParamName);
if (mData.paramName == null) {
mData.paramName = SceneManager.getStringAsAllocation(rs, mParamName);
SceneManager.cacheAlloc(mParamName, mData.paramName);
}
}
initLocalData();
mData.timestamp = 1;
mField.set(mData, 0, true);
return mField;
}
}
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