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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 com.android.scenegraph.TextureBase;
import android.content.res.Resources;
import android.renderscript.*;
import android.renderscript.ProgramFragment.Builder;
import android.util.Log;
/**
* @hide
*/
public class FragmentShader extends Shader {
ProgramFragment mProgram;
ScriptField_FragmentShader_s mField;
public static class Builder {
FragmentShader mShader;
ProgramFragment.Builder mBuilder;
public Builder(RenderScriptGL rs) {
mShader = new FragmentShader();
mBuilder = new ProgramFragment.Builder(rs);
}
public Builder setShader(Resources resources, int resourceID) {
mBuilder.setShader(resources, resourceID);
return this;
}
public Builder setObjectConst(Type type) {
mShader.mPerObjConstants = type;
return this;
}
public Builder setShaderConst(Type type) {
mShader.mPerShaderConstants = type;
return this;
}
public Builder addShaderTexture(Program.TextureType texType, String name) {
mShader.mShaderTextureNames.add(name);
mShader.mShaderTextureTypes.add(texType);
return this;
}
public Builder addTexture(Program.TextureType texType, String name) {
mShader.mTextureNames.add(name);
mShader.mTextureTypes.add(texType);
return this;
}
public FragmentShader create() {
if (mShader.mPerShaderConstants != null) {
mBuilder.addConstant(mShader.mPerShaderConstants);
}
if (mShader.mPerObjConstants != null) {
mBuilder.addConstant(mShader.mPerObjConstants);
}
for (int i = 0; i < mShader.mTextureTypes.size(); i ++) {
mBuilder.addTexture(mShader.mTextureTypes.get(i));
}
for (int i = 0; i < mShader.mShaderTextureTypes.size(); i ++) {
mBuilder.addTexture(mShader.mShaderTextureTypes.get(i));
}
mShader.mProgram = mBuilder.create();
return mShader;
}
}
public ProgramFragment getProgram() {
return mProgram;
}
ScriptField_ShaderParam_s getTextureParams() {
RenderScriptGL rs = SceneManager.getRS();
Resources res = SceneManager.getRes();
if (rs == null || res == null) {
return null;
}
ArrayList<ScriptField_ShaderParam_s.Item> paramList;
paramList = new ArrayList<ScriptField_ShaderParam_s.Item>();
int shaderTextureStart = mTextureTypes.size();
for (int i = 0; i < mShaderTextureNames.size(); i ++) {
ShaderParam sp = mSourceParams.get(mShaderTextureNames.get(i));
if (sp != null && sp instanceof TextureParam) {
TextureParam p = (TextureParam)sp;
ScriptField_ShaderParam_s.Item paramRS = new ScriptField_ShaderParam_s.Item();
paramRS.bufferOffset = shaderTextureStart + i;
paramRS.transformTimestamp = 0;
paramRS.dataTimestamp = 0;
paramRS.data = p.getRSData().getAllocation();
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;
}
ScriptField_FragmentShader_s getRSData() {
if (mField != null) {
return mField;
}
RenderScriptGL rs = SceneManager.getRS();
Resources res = SceneManager.getRes();
if (rs == null || res == null) {
return null;
}
ScriptField_FragmentShader_s.Item item = new ScriptField_FragmentShader_s.Item();
item.program = mProgram;
ScriptField_ShaderParam_s texParams = getTextureParams();
if (texParams != null) {
item.shaderTextureParams = texParams.getAllocation();
}
linkConstants(rs);
if (mPerShaderConstants != null) {
item.shaderConst = mConstantBuffer;
item.shaderConstParams = mConstantBufferParams.getAllocation();
mProgram.bindConstants(item.shaderConst, 0);
}
item.objectConstIndex = -1;
if (mPerObjConstants != null) {
item.objectConstIndex = mPerShaderConstants != null ? 1 : 0;
}
mField = new ScriptField_FragmentShader_s(rs, 1);
mField.set(item, 0, true);
return mField;
}
}
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