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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;
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a436ccc5
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leszek
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import android.opengl.GLES30;
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af4cc5db
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import android.opengl.Matrix;
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a09ada4c
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import java.util.ArrayList;
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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abstract class DistortedOutputSurface extends DistortedSurface implements DistortedAttacheable
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Leszek Koltunski
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{
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private static int mRender = 0;
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private ArrayList<DistortedNode> mChildren;
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private int mNumChildren; // ==mChildren.length(), but we only create mChildren if the first one gets added
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private float mNear, mFOV;
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int mWidth,mHeight,mDepth;
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float mDistance;
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float[] mProjectionMatrix;
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int mDepthCreated;
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int[] mDepthH = new int[1];
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int[] mFBOH = new int[1];
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///////////////////////////////////////////////////////////////////////////////////////////////////
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DistortedOutputSurface(int width, int height, int createColor, int createDepth, int fbo, int type)
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{
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super(width,height,createColor,type);
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mProjectionMatrix = new float[16];
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mWidth = width;
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mHeight= height;
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mFOV = 60.0f;
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mNear= 0.5f;
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mDepthCreated= createDepth;
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mFBOH[0] = fbo;
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mDepthH[0] = 0;
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createProjection();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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void createProjection()
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{
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if( mWidth>0 && mHeight>1 )
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{
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if( mFOV>0.0f ) // perspective projection
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{
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float a = 2.0f*(float)Math.tan(mFOV*Math.PI/360);
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float q = (float)mWidth/mHeight;
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float c = mHeight*mNear;
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float left = -q*c/2;
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float right = +q*c/2;
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float bottom = -c/2;
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float top = +c/2;
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float near = c/a;
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mDistance = mHeight/a;
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float far = 2*mDistance-near;
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mDepth = (int)((far-near)/2);
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Matrix.frustumM(mProjectionMatrix, 0, left, right, bottom, top, near, far);
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}
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else // parallel projection
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{
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float left = -mWidth /2.0f;
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float right = +mWidth /2.0f;
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float bottom = -mHeight/2.0f;
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float top = +mHeight/2.0f;
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float near = mWidth+mHeight-mHeight*(1.0f-mNear);
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mDistance = mWidth+mHeight;
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float far = mWidth+mHeight+mHeight*(1.0f-mNear);
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mDepth = (int)((far-near)/2);
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Matrix.orthoM(mProjectionMatrix, 0, left, right, bottom, top, near, far);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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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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mRender++;
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// change tree topology (attach and detach children)
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/*
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boolean changed =
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*/
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DistortedAttachDaemon.toDo();
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/*
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// debugging only
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if( changed )
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{
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for(int i=0; i<mNumChildren; i++)
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{
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mChildren.get(i).debug(0);
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}
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DistortedNode.debugMap();
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}
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*/
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// create and delete all underlying OpenGL resources
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// Watch out: FIRST change topology, only then deal
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// with OpenGL resources. That's because changing Tree
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// can result in additional Framebuffers that would need
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// to be created immediately, before the calls to drawRecursive()
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toDo();
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/*
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// debugging only
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if( changed )
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{
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DistortedSurface.debugLists();
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}
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*/
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// mark OpenGL state as unknown
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DistortedRenderState.reset();
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int numRenders = 0;
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for(int i=0; i<mNumChildren; i++)
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{
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numRenders += mChildren.get(i).drawRecursive(mRender,time,this);
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}
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return numRenders;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Bind this Surface as a Framebuffer we can render to.
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*/
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public void setAsOutput()
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{
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GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Create new Projection matrix.
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*
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* @param fov Vertical 'field of view' of the Projection frustrum (in degrees).
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* Valid values: 0<=fov<180. FOV==0 means 'parallel projection'.
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* @param near Distance between the screen plane and the near plane.
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* Valid vaules: 0<near<1. When near==0, the Near Plane is exactly at the tip of the
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* pyramid. When near==1 (illegal!) the near plane is equivalent to the screen plane.
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*/
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public void setProjection(float fov, float near)
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{
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if( fov < 180.0f && fov >=0.0f ) mFOV = fov;
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if( near< 1.0f && near> 0.0f ) mNear= near;
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Leszek Koltunski
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createProjection();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Resize the underlying Framebuffer.
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* <p>
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* This method can be safely called mid-render as it doesn't interfere with rendering.
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*
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* @param width The new width.
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* @param height The new height.
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*/
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public void resize(int width, int height)
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{
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if( mWidth!=width || mHeight!=height )
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{
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mWidth = width;
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mHeight= height;
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mSizeX = width;
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mSizeY = height;
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createProjection();
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if( mColorCreated==CREATED )
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{
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markForCreation();
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recreate();
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Create a new DEPTH buffer and attach it or (param=false) detach an existing DEPTH attachment and recreate it.
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*
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* @param enable <bold>true</bold> if we want to attach a new DEPTH buffer to the FBO.<br>
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* <bold>false</bold> if we want to detach the DEPTH attachment.
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*/
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public void enableDepth(boolean enable)
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{
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c7da4e65
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if( enable && mDepthCreated==DONT_CREATE )
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{
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mDepthCreated = NOT_CREATED_YET;
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f28fffc2
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markForCreation();
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}
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if( !enable && mDepthCreated!=DONT_CREATE )
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{
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mDepthCreated = DONT_CREATE;
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f28fffc2
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markForCreation();
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return true if the Surface contains a DEPTH attachment.
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*
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* @return <bold>true</bold> if the FBO contains a DEPTH attachment.
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*/
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public boolean hasDepth()
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{
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return mDepthCreated==CREATED;
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}
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a09ada4c
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Adds a new child to the last position in the list of our Surface's children.
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253 |
c204c69d
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leszek
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* <p>
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* We cannot do this mid-render - actual attachment will be done just before the next render, by the
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* DistortedAttachDeamon (by calling attachNow())
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256 |
a09ada4c
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*
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* @param node The new Node to add.
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*/
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c204c69d
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public void attach(DistortedNode node)
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260 |
a09ada4c
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{
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261 |
c204c69d
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DistortedAttachDaemon.attach(this,node);
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262 |
a09ada4c
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Adds a new child to the last position in the list of our Surface's children.
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267 |
c204c69d
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leszek
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* <p>
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268 |
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* We cannot do this mid-render - actual attachment will be done just before the next render, by the
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* DistortedAttachDeamon (by calling attachNow())
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a09ada4c
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*
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* @param surface InputSurface to initialize our child Node with.
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* @param effects DistortedEffects to initialize our child Node with.
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* @param mesh MeshObject to initialize our child Node with.
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* @return the newly constructed child Node, or null if we couldn't allocate resources.
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*/
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276 |
c204c69d
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leszek
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public DistortedNode attach(DistortedInputSurface surface, DistortedEffects effects, MeshObject mesh)
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277 |
a09ada4c
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Leszek Koltunski
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{
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278 |
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DistortedNode node = new DistortedNode(surface,effects,mesh);
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c204c69d
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DistortedAttachDaemon.attach(this,node);
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return node;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* This is not really part of the public API. Has to be public only because it is a part of the
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* DistortedAttacheable interface, which should really be a class that we extend here instead but
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* Java has no multiple inheritance.
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*
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43fbf0dd
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* @y.exclude
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290 |
c204c69d
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* @param node new Node to add.
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*/
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public void attachNow(DistortedNode node)
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{
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if( mChildren==null ) mChildren = new ArrayList<>(2);
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295 |
a09ada4c
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Leszek Koltunski
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mChildren.add(node);
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mNumChildren++;
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}
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298 |
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299 |
af27df87
|
leszek
|
///////////////////////////////////////////////////////////////////////////////////////////////////
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300 |
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/**
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301 |
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* Removes the first occurrence of a specified child from the list of children of our Surface.
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302 |
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* <p>
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303 |
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* A bit questionable method as there can be many different Nodes attached as children, some
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304 |
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* of them having the same Effects but - for instance - different Mesh. Use with care.
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* <p>
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306 |
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* We cannot do this mid-render - actual detachment will be done just before the next render, by the
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307 |
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* DistortedAttachDeamon (by calling detachNow())
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308 |
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*
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* @param effects DistortedEffects to remove.
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*/
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311 |
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public void detach(DistortedEffects effects)
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312 |
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{
|
313 |
|
|
long id = effects.getID();
|
314 |
|
|
DistortedNode node;
|
315 |
|
|
|
316 |
|
|
for(int i=0; i<mNumChildren; i++)
|
317 |
|
|
{
|
318 |
|
|
node = mChildren.get(i);
|
319 |
|
|
|
320 |
|
|
if( node.getEffects().getID()==id )
|
321 |
|
|
{
|
322 |
|
|
DistortedAttachDaemon.detach(this,node);
|
323 |
|
|
break;
|
324 |
|
|
}
|
325 |
|
|
}
|
326 |
|
|
}
|
327 |
|
|
|
328 |
a09ada4c
|
Leszek Koltunski
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
329 |
|
|
/**
|
330 |
|
|
* Removes the first occurrence of a specified child from the list of children of our Surface.
|
331 |
c204c69d
|
leszek
|
* <p>
|
332 |
|
|
* We cannot do this mid-render - actual attachment will be done just before the next render, by the
|
333 |
|
|
* DistortedAttachDeamon (by calling detachNow())
|
334 |
|
|
*
|
335 |
|
|
* @param node The Node to remove.
|
336 |
|
|
*/
|
337 |
|
|
public void detach(DistortedNode node)
|
338 |
|
|
{
|
339 |
|
|
DistortedAttachDaemon.detach(this,node);
|
340 |
|
|
}
|
341 |
|
|
|
342 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
343 |
|
|
/**
|
344 |
|
|
* This is not really part of the public API. Has to be public only because it is a part of the
|
345 |
|
|
* DistortedAttacheable interface, which should really be a class that we extend here instead but
|
346 |
|
|
* Java has no multiple inheritance.
|
347 |
a09ada4c
|
Leszek Koltunski
|
*
|
348 |
43fbf0dd
|
leszek
|
* @y.exclude
|
349 |
a09ada4c
|
Leszek Koltunski
|
* @param node The Node to remove.
|
350 |
|
|
*/
|
351 |
c204c69d
|
leszek
|
public void detachNow(DistortedNode node)
|
352 |
a09ada4c
|
Leszek Koltunski
|
{
|
353 |
d9706fd2
|
Leszek Koltunski
|
if( mNumChildren>0 && mChildren.remove(node) )
|
354 |
a09ada4c
|
Leszek Koltunski
|
{
|
355 |
|
|
mNumChildren--;
|
356 |
|
|
}
|
357 |
|
|
}
|
358 |
|
|
|
359 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
360 |
|
|
/**
|
361 |
|
|
* Removes all children Nodes.
|
362 |
c204c69d
|
leszek
|
* <p>
|
363 |
|
|
* We cannot do this mid-render - actual attachment will be done just before the next render, by the
|
364 |
|
|
* DistortedAttachDeamon (by calling detachAllNow())
|
365 |
|
|
*/
|
366 |
|
|
public void detachAll()
|
367 |
|
|
{
|
368 |
|
|
DistortedAttachDaemon.detachAll(this);
|
369 |
|
|
}
|
370 |
|
|
|
371 |
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
372 |
|
|
/**
|
373 |
|
|
* This is not really part of the public API. Has to be public only because it is a part of the
|
374 |
|
|
* DistortedAttacheable interface, which should really be a class that we extend here instead but
|
375 |
|
|
* Java has no multiple inheritance.
|
376 |
43fbf0dd
|
leszek
|
*
|
377 |
|
|
* @y.exclude
|
378 |
a09ada4c
|
Leszek Koltunski
|
*/
|
379 |
c204c69d
|
leszek
|
public void detachAllNow()
|
380 |
a09ada4c
|
Leszek Koltunski
|
{
|
381 |
d9706fd2
|
Leszek Koltunski
|
if( mNumChildren>0 )
|
382 |
|
|
{
|
383 |
|
|
mNumChildren = 0;
|
384 |
|
|
mChildren.clear();
|
385 |
|
|
}
|
386 |
a09ada4c
|
Leszek Koltunski
|
}
|
387 |
af4cc5db
|
Leszek Koltunski
|
}
|