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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 android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.renderscript.*;
import android.renderscript.Allocation.MipmapControl;
import android.renderscript.Element.Builder;
import android.renderscript.Font.Style;
import android.renderscript.Program.TextureType;
import android.renderscript.ProgramStore.DepthFunc;
import android.util.Log;
import java.util.ArrayList;
class FullscreenBlur {
static Allocation sRenderTargetBlur0Color;
static Allocation sRenderTargetBlur0Depth;
static Allocation sRenderTargetBlur1Color;
static Allocation sRenderTargetBlur1Depth;
static Allocation sRenderTargetBlur2Color;
static Allocation sRenderTargetBlur2Depth;
static ProgramFragment mPF_BlurH;
static ProgramFragment mPF_BlurV;
static ProgramFragment mPF_SelectColor;
static ProgramFragment mPF_Texture;
static ScriptField_FBlurOffsets_s mFsBlurHConst;
static ScriptField_FBlurOffsets_s mFsBlurVConst;
static ProgramVertex mPV_Paint;
static ProgramVertex mPV_Blur;
// This is only used when full screen blur is enabled
// Basically, it's the offscreen render targets
static void createRenderTargets(RenderScriptGL rs, int w, int h) {
Type.Builder b = new Type.Builder(rs, Element.RGBA_8888(rs));
b.setX(w/8).setY(h/8);
Type renderType = b.create();
sRenderTargetBlur0Color = Allocation.createTyped(rs, renderType,
Allocation.USAGE_GRAPHICS_TEXTURE |
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
sRenderTargetBlur1Color = Allocation.createTyped(rs, renderType,
Allocation.USAGE_GRAPHICS_TEXTURE |
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
sRenderTargetBlur2Color = Allocation.createTyped(rs, renderType,
Allocation.USAGE_GRAPHICS_TEXTURE |
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
b = new Type.Builder(rs,
Element.createPixel(rs, Element.DataType.UNSIGNED_16,
Element.DataKind.PIXEL_DEPTH));
b.setX(w/8).setY(h/8);
sRenderTargetBlur0Depth = Allocation.createTyped(rs,
b.create(),
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
sRenderTargetBlur1Depth = Allocation.createTyped(rs,
b.create(),
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
sRenderTargetBlur2Depth = Allocation.createTyped(rs,
b.create(),
Allocation.USAGE_GRAPHICS_RENDER_TARGET);
}
static void addBlurPasses(Scene scene, RenderScriptGL rs, SceneManager sceneManager) {
ArrayList<RenderableBase> allDraw = scene.getRenderables();
int numDraw = allDraw.size();
RenderState drawTex = new RenderState(mPV_Blur, mPF_Texture,
BLEND_ADD_DEPTH_NONE(rs),
ProgramRaster.CULL_NONE(rs));
RenderState selectCol = new RenderState(mPV_Blur, mPF_SelectColor,
ProgramStore.BLEND_NONE_DEPTH_NONE(rs),
ProgramRaster.CULL_NONE(rs));
RenderState hBlur = new RenderState(mPV_Blur, mPF_BlurH,
ProgramStore.BLEND_NONE_DEPTH_NONE(rs),
ProgramRaster.CULL_NONE(rs));
RenderState vBlur = new RenderState(mPV_Blur, mPF_BlurV,
ProgramStore.BLEND_NONE_DEPTH_NONE(rs),
ProgramRaster.CULL_NONE(rs));
RenderPass blurSourcePass = new RenderPass();
blurSourcePass.setColorTarget(sRenderTargetBlur0Color);
blurSourcePass.setDepthTarget(sRenderTargetBlur0Depth);
blurSourcePass.setClearColor(new Float4(1.0f, 1.0f, 1.0f, 1.0f));
blurSourcePass.setShouldClearColor(true);
blurSourcePass.setClearDepth(1.0f);
blurSourcePass.setShouldClearDepth(true);
blurSourcePass.setCamera(scene.getCameras().get(1));
for (int i = 0; i < numDraw; i ++) {
blurSourcePass.appendRenderable((Renderable)allDraw.get(i));
}
scene.appendRenderPass(blurSourcePass);
RenderPass selectColorPass = new RenderPass();
selectColorPass.setColorTarget(sRenderTargetBlur2Color);
selectColorPass.setDepthTarget(sRenderTargetBlur2Depth);
selectColorPass.setShouldClearColor(false);
selectColorPass.setShouldClearDepth(false);
selectColorPass.setCamera(scene.getCameras().get(1));
// Make blur shape
Renderable quad = sceneManager.getRenderableQuad("ScreenAlignedQuadS", selectCol);
quad.updateTextures(rs, sRenderTargetBlur0Color, 0);
selectColorPass.appendRenderable(quad);
scene.appendRenderPass(selectColorPass);
RenderPass horizontalBlurPass = new RenderPass();
horizontalBlurPass.setColorTarget(sRenderTargetBlur1Color);
horizontalBlurPass.setDepthTarget(sRenderTargetBlur1Depth);
horizontalBlurPass.setShouldClearColor(false);
horizontalBlurPass.setShouldClearDepth(false);
horizontalBlurPass.setCamera(scene.getCameras().get(1));
// Make blur shape
quad = sceneManager.getRenderableQuad("ScreenAlignedQuadH", hBlur);
quad.updateTextures(rs, sRenderTargetBlur2Color, 0);
horizontalBlurPass.appendRenderable(quad);
scene.appendRenderPass(horizontalBlurPass);
RenderPass verticalBlurPass = new RenderPass();
verticalBlurPass.setColorTarget(sRenderTargetBlur2Color);
verticalBlurPass.setDepthTarget(sRenderTargetBlur2Depth);
verticalBlurPass.setShouldClearColor(false);
verticalBlurPass.setShouldClearDepth(false);
verticalBlurPass.setCamera(scene.getCameras().get(1));
// Make blur shape
quad = sceneManager.getRenderableQuad("ScreenAlignedQuadV", vBlur);
quad.updateTextures(rs, sRenderTargetBlur1Color, 0);
verticalBlurPass.appendRenderable(quad);
scene.appendRenderPass(verticalBlurPass);
}
static void addCompositePass(Scene scene, RenderScriptGL rs, SceneManager sceneManager) {
RenderState drawTex = new RenderState(mPV_Blur, mPF_Texture,
BLEND_ADD_DEPTH_NONE(rs),
ProgramRaster.CULL_NONE(rs));
RenderPass compositePass = new RenderPass();
compositePass.setClearColor(new Float4(1.0f, 1.0f, 1.0f, 0.0f));
compositePass.setShouldClearColor(false);
compositePass.setClearDepth(1.0f);
compositePass.setShouldClearDepth(false);
compositePass.setCamera(scene.getCameras().get(1));
Renderable quad = sceneManager.getRenderableQuad("ScreenAlignedQuad", drawTex);
quad.updateTextures(rs, sRenderTargetBlur2Color, 0);
compositePass.appendRenderable(quad);
scene.appendRenderPass(compositePass);
}
private static ProgramStore BLEND_ADD_DEPTH_NONE(RenderScript rs) {
ProgramStore.Builder builder = new ProgramStore.Builder(rs);
builder.setDepthFunc(ProgramStore.DepthFunc.ALWAYS);
builder.setBlendFunc(ProgramStore.BlendSrcFunc.ONE, ProgramStore.BlendDstFunc.ONE);
builder.setDitherEnabled(false);
builder.setDepthMaskEnabled(false);
return builder.create();
}
static void initShaders(Resources res, RenderScript rs,
ScriptField_VShaderParams_s vsConst,
ScriptField_FShaderParams_s fsConst) {
ProgramVertex.Builder vb = new ProgramVertex.Builder(rs);
vb.addConstant(vsConst.getAllocation().getType());
vb.addInput(ScriptField_VertexShaderInputs_s.createElement(rs));
vb.setShader(res, R.raw.blur_vertex);
mPV_Blur = vb.create();
mPV_Blur.bindConstants(vsConst.getAllocation(), 0);
ProgramFragment.Builder fb = new ProgramFragment.Builder(rs);
fb.addConstant(fsConst.getAllocation().getType());
fb.setShader(res, R.raw.texture);
fb.addTexture(TextureType.TEXTURE_2D);
mPF_Texture = fb.create();
mPF_Texture.bindConstants(fsConst.getAllocation(), 0);
mPF_Texture.bindSampler(Sampler.WRAP_LINEAR_MIP_LINEAR(rs), 0);
mFsBlurHConst = new ScriptField_FBlurOffsets_s(rs, 1);
float xAdvance = 1.0f / (float)sRenderTargetBlur0Color.getType().getX();
ScriptField_FBlurOffsets_s.Item item = new ScriptField_FBlurOffsets_s.Item();
item.blurOffset0 = - xAdvance * 2.5f;
item.blurOffset1 = - xAdvance * 0.5f;
item.blurOffset2 = xAdvance * 1.5f;
item.blurOffset3 = xAdvance * 3.5f;
mFsBlurHConst.set(item, 0, true);
fb = new ProgramFragment.Builder(rs);
fb.addConstant(mFsBlurHConst.getAllocation().getType());
fb.setShader(res, R.raw.blur_h);
fb.addTexture(TextureType.TEXTURE_2D);
mPF_BlurH = fb.create();
mPF_BlurH.bindConstants(mFsBlurHConst.getAllocation(), 0);
mPF_BlurH.bindTexture(sRenderTargetBlur0Color, 0);
mPF_BlurH.bindSampler(Sampler.CLAMP_LINEAR(rs), 0);
mFsBlurVConst = new ScriptField_FBlurOffsets_s(rs, 1);
float yAdvance = 1.0f / (float)sRenderTargetBlur0Color.getType().getY();
item.blurOffset0 = - yAdvance * 2.5f;
item.blurOffset1 = - yAdvance * 0.5f;
item.blurOffset2 = yAdvance * 1.5f;
item.blurOffset3 = yAdvance * 3.5f;
mFsBlurVConst.set(item, 0, true);
fb = new ProgramFragment.Builder(rs);
fb.addConstant(mFsBlurVConst.getAllocation().getType());
fb.setShader(res, R.raw.blur_v);
fb.addTexture(TextureType.TEXTURE_2D);
mPF_BlurV = fb.create();
mPF_BlurV.bindConstants(mFsBlurVConst.getAllocation(), 0);
mPF_BlurV.bindTexture(sRenderTargetBlur1Color, 0);
mPF_BlurV.bindSampler(Sampler.CLAMP_LINEAR(rs), 0);
fb = new ProgramFragment.Builder(rs);
//fb.addConstant(mFsBlurVConst.getAllocation().getType());
fb.setShader(res, R.raw.select_color);
fb.addTexture(TextureType.TEXTURE_2D);
mPF_SelectColor = fb.create();
//mPF_SelectColor.bindConstants(mFsBlurVConst.getAllocation(), 0);
//mPF_SelectColor.bindTexture(sRenderTargetBlur1Color, 0);
mPF_SelectColor.bindSampler(Sampler.CLAMP_LINEAR(rs), 0);
}
}
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