/src/main/java/org/distorted/library/main/InternalBuffer.java - Annotate - Distorted Android

library / src / main / java / org / distorted / library / main / InternalBuffer.java @ b5be333a

1	466450b5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
2			// Copyright 2018 Leszek Koltunski //
3			// //
4	46b572b5	Leszek Koltunski	// This file is part of Distorted. //
5	466450b5	Leszek Koltunski	// //
6	46b572b5	Leszek Koltunski	// Distorted is free software: you can redistribute it and/or modify //
7	466450b5	Leszek Koltunski	// it under the terms of the GNU General Public License as published by //
8			// the Free Software Foundation, either version 2 of the License, or //
9			// (at your option) any later version. //
10			// //
11	46b572b5	Leszek Koltunski	// Distorted is distributed in the hope that it will be useful, //
12	466450b5	Leszek Koltunski	// but WITHOUT ANY WARRANTY; without even the implied warranty of //
13			// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
14			// GNU General Public License for more details. //
15			// //
16			// You should have received a copy of the GNU General Public License //
17	46b572b5	Leszek Koltunski	// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
18	466450b5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
19
20			package org.distorted.library.main;
21
22	b7074bc6	Leszek Koltunski	import android.opengl.GLES30;
23	466450b5	Leszek Koltunski	import java.nio.Buffer;
24	22e60fba	Leszek Koltunski	import java.nio.ByteBuffer;
25			import java.nio.ByteOrder;
26			import java.nio.FloatBuffer;
27	466450b5	Leszek Koltunski
28			///////////////////////////////////////////////////////////////////////////////////////////////////
29			/**
30			* Implements OpenGL buffer object such as GL_ARRAY_BUFFER or GL_TRANSFORM_FEEDBACK_BUFFER.
31			* Main point: deal with Android lifecycle and recreate the buffer on loss of OpenGL context.
32			* <p>
33			* Not part of public API, do not document (public only because has to be used in Meshes)
34			*
35			* @y.exclude
36			*/
37	7602a827	Leszek Koltunski	public class InternalBuffer extends InternalObject
38	466450b5	Leszek Koltunski	{
39	7e53a35f	Leszek Koltunski	private final int[] mIndex;
40	466450b5	Leszek Koltunski	private int mTarget, mSize, mUsage;
41			private Buffer mBuffer;
42
43			///////////////////////////////////////////////////////////////////////////////////////////////////
44
45	7602a827	Leszek Koltunski	public InternalBuffer(int target, int usage)
46	466450b5	Leszek Koltunski	{
47	7602a827	Leszek Koltunski	super(InternalObject.TYPE_USER);
48	466450b5	Leszek Koltunski
49			mIndex = new int[1];
50			mTarget = target;
51			mUsage = usage;
52	ccd98f1c	Leszek Koltunski	mBuffer = null;
53			mSize = 0;
54	466450b5	Leszek Koltunski
55			recreate();
56			}
57
58			///////////////////////////////////////////////////////////////////////////////////////////////////
59	22e60fba	Leszek Koltunski	// must be called from a thread holding OpenGL Context.
60	466450b5	Leszek Koltunski
61	7e53a35f	Leszek Koltunski	public int createImmediately(int size, float[] buffer)
62	466450b5	Leszek Koltunski	{
63	22e60fba	Leszek Koltunski	if( mIndex[0]<0 )
64			{
65			mSize= size;
66	ccd98f1c	Leszek Koltunski
67	22e60fba	Leszek Koltunski	if( buffer!=null )
68			{
69			FloatBuffer buf = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder()).asFloatBuffer();
70			buf.put(buffer).position(0);
71			mBuffer = buf;
72			}
73			else
74			{
75			mBuffer = null;
76			}
77
78	b7074bc6	Leszek Koltunski	GLES30.glGenBuffers( 1, mIndex, 0);
79			GLES30.glBindBuffer( mTarget, mIndex[0]);
80			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
81			GLES30.glBindBuffer( mTarget, 0);
82	22e60fba	Leszek Koltunski
83			markWasCreatedImmediately();
84			}
85	7e53a35f	Leszek Koltunski
86			return mIndex[0];
87	22e60fba	Leszek Koltunski	}
88
89			///////////////////////////////////////////////////////////////////////////////////////////////////
90
91			public void invalidate()
92			{
93			recreate();
94	466450b5	Leszek Koltunski	}
95
96			///////////////////////////////////////////////////////////////////////////////////////////////////
97			// must be called from a thread holding OpenGL Context
98
99			void create()
100			{
101			if( mIndex[0]<0 )
102			{
103	b7074bc6	Leszek Koltunski	GLES30.glGenBuffers( 1, mIndex, 0);
104			GLES30.glBindBuffer( mTarget, mIndex[0]);
105			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
106			GLES30.glBindBuffer( mTarget, 0);
107	466450b5	Leszek Koltunski	}
108			}
109
110			///////////////////////////////////////////////////////////////////////////////////////////////////
111			// must be called from a thread holding OpenGL Context
112
113			void delete()
114			{
115			if( mIndex[0]>=0 )
116			{
117	b7074bc6	Leszek Koltunski	GLES30.glDeleteBuffers(1, mIndex, 0);
118	466450b5	Leszek Koltunski	mIndex[0] = -1;
119			}
120			}
121
122			///////////////////////////////////////////////////////////////////////////////////////////////////
123
124			void recreate()
125			{
126			mIndex[0] = -1;
127			}
128
129			///////////////////////////////////////////////////////////////////////////////////////////////////
130			// debugging only
131
132			String printDetails()
133			{
134			return getClass().getSimpleName();
135			}
136			}

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library / src / main / java / org / distorted / library / main / InternalBuffer.java @ b5be333a