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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.library.main;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.opengl.GLES30;
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import org.distorted.library.effect.MatrixEffectMove;
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import org.distorted.library.effect.MatrixEffectScale;
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import org.distorted.library.mesh.MeshQuad;
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import org.distorted.library.type.Static3D;
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/**
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* Class which represents the Screen.
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* <p>
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* User is able to render to it just like to a DistortedFramebuffer.
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*/
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public class DistortedScreen extends DistortedFramebuffer
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{
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///// DEBUGGING ONLY /////////////////////////
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private static final int NUM_FRAMES = 100;
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private static final int FPS_W = 120;
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private static final int FPS_H = 70;
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private boolean mShowFPS;
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private MeshQuad fpsMesh;
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private DistortedTexture fpsTexture;
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private DistortedEffects fpsEffects;
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private Canvas fpsCanvas;
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private Bitmap fpsBitmap;
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private Paint mPaint;
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private String fpsString;
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private long lastTime=0;
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private long[] durations;
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private int currDuration;
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private static Static3D mMoveVector = new Static3D(0,0,0);
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private static MatrixEffectMove mMoveEffect = new MatrixEffectMove(mMoveVector);
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///// END DEBUGGING //////////////////////////
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private int mCurRenderedFBO; // During the first FBO_QUEUE_SIZE frames, we blit the very first
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private int mToBeBlittedFBO; // FBO one we have rendered. Then, we keep blitting the one we
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private boolean mFirstCircle; // rendered FBO_QUEUE_SIZE ago.
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Create a new Screen. Initially 1x1 in size.
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* <p>
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* Has to be followed by a 'resizeFBO()' to set the size.
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*/
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public DistortedScreen()
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{
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super(DistortedLibrary.FBO_QUEUE_SIZE,1,BOTH_DEPTH_STENCIL, TYPE_SYST, 1,1);
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mShowFPS = false;
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mCurRenderedFBO = 0;
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mToBeBlittedFBO = 0;
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mFirstCircle = true;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Draws all the attached children to this OutputSurface.
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* <p>
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* Must be called from a thread holding OpenGL Context.
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*
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* @param time Current time, in milliseconds. This will be passed to all the Effects stored in the children Nodes.
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* @return Number of objects rendered.
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*/
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public int render(long time)
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{
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if( mShowFPS )
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{
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if( lastTime==0 ) lastTime = time;
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currDuration++;
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if (currDuration >= NUM_FRAMES) currDuration = 0;
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durations[NUM_FRAMES] += ((time - lastTime) - durations[currDuration]);
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durations[currDuration] = time - lastTime;
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fpsString = "" + ((int)(10000.0f*NUM_FRAMES/durations[NUM_FRAMES]))/10.0f;
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mPaint.setColor(0xffffffff);
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fpsCanvas.drawRect(0, 0, FPS_W, FPS_H, mPaint);
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mPaint.setColor(0xff000000);
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fpsCanvas.drawText(fpsString, 0.5f*FPS_W, 0.75f*FPS_H, mPaint);
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fpsTexture.setTexture(fpsBitmap);
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mMoveVector.set( (-mWidth+FPS_W)/2 +5, (mHeight-FPS_H)/2 -5, 0);
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lastTime = time;
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}
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int numrender = super.render(time,mCurRenderedFBO);
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GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);
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// workaround for the Mali issues: blit the framebuffer we have computed DistortedLibrary.FBO_QUEUE_SIZE
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// frames ago. Looks like FBO_QUEUE_SIZE=2 solves the issue already but I decided to play it safe and
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// make it equal to 3.
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// This of course introduces a delay and uses more memory, but it does not appear to have any effect
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// on speed. Maybe a slight positive effect if any!
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setAsInput(mToBeBlittedFBO,0);
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GLES30.glColorMask(true,true,true,true);
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GLES30.glDepthMask(false);
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GLES30.glDisable(GLES30.GL_STENCIL_TEST);
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GLES30.glDisable(GLES30.GL_DEPTH_TEST);
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GLES30.glDisable(GLES30.GL_BLEND);
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DistortedLibrary.blitPriv(this);
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if( mShowFPS && fpsTexture.setAsInput())
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{
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DistortedLibrary.drawPriv(fpsEffects, fpsMesh, this, time);
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}
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if( ++mCurRenderedFBO>= DistortedLibrary.FBO_QUEUE_SIZE )
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{
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mCurRenderedFBO = 0;
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if (mFirstCircle) mFirstCircle = false;
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}
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if( !mFirstCircle && ++mToBeBlittedFBO>= DistortedLibrary.FBO_QUEUE_SIZE )
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{
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mToBeBlittedFBO=0;
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}
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return numrender+1;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Make the library show Frames Per Second in the upper-left corner.
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* <p>
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*/
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public void showFPS()
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{
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if( !mShowFPS )
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{
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mShowFPS = true;
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fpsString = "";
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fpsBitmap = Bitmap.createBitmap(FPS_W, FPS_H, Bitmap.Config.ARGB_8888);
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fpsMesh = new MeshQuad();
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fpsTexture = new DistortedTexture();
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fpsTexture.setTexture(fpsBitmap);
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fpsCanvas = new Canvas(fpsBitmap);
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fpsEffects = new DistortedEffects();
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fpsEffects.apply( new MatrixEffectScale( new Static3D(FPS_W,FPS_H,1) ) );
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fpsEffects.apply(mMoveEffect);
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mPaint = new Paint();
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mPaint.setAntiAlias(true);
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mPaint.setTextAlign(Paint.Align.CENTER);
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mPaint.setTextSize(0.7f * FPS_H);
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durations = new long[NUM_FRAMES + 1];
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currDuration = 0;
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for (int i=0; i<NUM_FRAMES+1; i++) durations[i] = 16; // Assume FPS will be
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durations[NUM_FRAMES] = NUM_FRAMES * 16; // close to 1000/16 ~ 60
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}
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}
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}
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