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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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import android.content.Context;
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import android.opengl.GLES20;
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import org.distorted.library.program.*;
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import java.io.InputStream;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* A singleton class used to control various global settings.
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*/
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public class Distorted
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{
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/**
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* When creating an instance of a DistortedTexture (or Tree) from another instance, do not clone anything.
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* Used in the copy constructor.
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*/
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public static final int CLONE_NOTHING = 0x0;
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/**
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* When creating an instance of a DistortedTexture from another instance, clone the Bitmap that's
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* backing up our DistortedTexture.
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* <p>
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* This way we can have two DistortedTextures, both backed up by the same Bitmap, to which we can
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* apply different effects. Used in the copy constructor.
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*/
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public static final int CLONE_BITMAP = 0x1;
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/**
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* When creating an instance of a DistortedEffects from another instance, clone the Matrix Effects.
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* <p>
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* This way we can have two different DistortedEffects sharing the MATRIX queue.
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*/
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public static final int CLONE_MATRIX = 0x2;
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/**
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* When creating an instance of a DistortedEffects from another instance, clone the Vertex Effects.
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* <p>
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* This way we can have two different DistortedEffects sharing the VERTEX queue.
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*/
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public static final int CLONE_VERTEX = 0x4;
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/**
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* When creating an instance of a DistortedEffects from another instance, clone the Fragment Effects.
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* <p>
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* This way we can have two different DistortedEffects sharing the FRAGMENT queue.
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*/
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public static final int CLONE_FRAGMENT= 0x8;
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/**
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* When creating an instance of a DistortedTree from another instance, clone the children Nodes.
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* <p>
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* This is mainly useful for creating many similar sub-trees and rendering then at different places
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* on the screen with (optionally) different Effects.
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*/
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public static final int CLONE_CHILDREN= 0x10;
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private static boolean mInitialized = false;
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static int[] mMainProgramAttributes;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private Distorted()
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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static boolean isInitialized()
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{
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return mInitialized;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* When OpenGL context gets created, you need to call this method so that the library can initialise its internal data structures.
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* I.e. best called from GLSurfaceView.onCreate().
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* <p>
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* Needs to be called from a thread holding the OpenGL context.
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*
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* @param context Context of the App using the library - used to open up Resources and read Shader code.
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* @throws FragmentCompilationException
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* @throws VertexCompilationException
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* @throws VertexUniformsException
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* @throws FragmentUniformsException
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* @throws LinkingException
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*/
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public static void onCreate(final Context context)
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throws FragmentCompilationException,VertexCompilationException,VertexUniformsException,FragmentUniformsException,LinkingException
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{
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mInitialized = true;
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final InputStream vertexStream = context.getResources().openRawResource(R.raw.main_vertex_shader);
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final InputStream fragmentStream = context.getResources().openRawResource(R.raw.main_fragment_shader);
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DistortedProgram mainProgram = new DistortedProgram(vertexStream,fragmentStream);
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int programH = mainProgram.getProgramHandle();
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GLES20.glUseProgram(programH);
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mainProgram.bindAndEnableAttributes();
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mMainProgramAttributes = mainProgram.getAttributes();
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int textureUniformH = GLES20.glGetUniformLocation(programH, "u_Texture");
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GLES20.glEnable (GLES20.GL_DEPTH_TEST);
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GLES20.glDepthFunc(GLES20.GL_LEQUAL);
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GLES20.glEnable(GLES20.GL_BLEND);
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GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
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GLES20.glEnable(GLES20.GL_CULL_FACE);
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GLES20.glCullFace(GLES20.GL_BACK);
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GLES20.glFrontFace(GLES20.GL_CW);
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GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
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GLES20.glUniform1i(textureUniformH, 0);
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EffectQueueFragment.getUniforms(programH);
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EffectQueueVertex.getUniforms(programH);
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EffectQueueMatrix.getUniforms(programH);
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DistortedTree.reset();
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EffectMessageSender.startSending();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Call this so that the Library can release its internal data structures.
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* Must be called from Activity.onDestroy().
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*/
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public static void onDestroy()
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{
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DistortedTexture.onDestroy();
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DistortedFramebuffer.onDestroy();
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DistortedTree.onDestroy();
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EffectQueue.onDestroy();
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DistortedEffects.onDestroy();
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EffectMessageSender.stopSending();
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mInitialized = false;
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}
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}
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