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

library / src / main / java / org / distorted / library / main / InternalBuffer.java @ b7074bc6

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	7e53a35f	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
59
60			public int getIndex()
61			{
62			return mIndex[0];
63			}
64
65	466450b5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
66	22e60fba	Leszek Koltunski	// must be called from a thread holding OpenGL Context.
67	466450b5	Leszek Koltunski
68	7e53a35f	Leszek Koltunski	public int createImmediately(int size, float[] buffer)
69	466450b5	Leszek Koltunski	{
70	22e60fba	Leszek Koltunski	if( mIndex[0]<0 )
71			{
72			mSize= size;
73	ccd98f1c	Leszek Koltunski
74	22e60fba	Leszek Koltunski	if( buffer!=null )
75			{
76			FloatBuffer buf = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder()).asFloatBuffer();
77			buf.put(buffer).position(0);
78			mBuffer = buf;
79			}
80			else
81			{
82			mBuffer = null;
83			}
84
85	b7074bc6	Leszek Koltunski	GLES30.glGenBuffers( 1, mIndex, 0);
86			GLES30.glBindBuffer( mTarget, mIndex[0]);
87			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
88			GLES30.glBindBuffer( mTarget, 0);
89	22e60fba	Leszek Koltunski
90			markWasCreatedImmediately();
91			}
92	7e53a35f	Leszek Koltunski
93			return mIndex[0];
94	22e60fba	Leszek Koltunski	}
95
96			///////////////////////////////////////////////////////////////////////////////////////////////////
97
98			public void invalidate()
99			{
100			recreate();
101	466450b5	Leszek Koltunski	}
102
103			///////////////////////////////////////////////////////////////////////////////////////////////////
104			// must be called from a thread holding OpenGL Context
105
106			void create()
107			{
108			if( mIndex[0]<0 )
109			{
110	b7074bc6	Leszek Koltunski	GLES30.glGenBuffers( 1, mIndex, 0);
111			GLES30.glBindBuffer( mTarget, mIndex[0]);
112			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
113			GLES30.glBindBuffer( mTarget, 0);
114	466450b5	Leszek Koltunski	}
115			}
116
117			///////////////////////////////////////////////////////////////////////////////////////////////////
118			// must be called from a thread holding OpenGL Context
119
120			void delete()
121			{
122			if( mIndex[0]>=0 )
123			{
124	b7074bc6	Leszek Koltunski	GLES30.glDeleteBuffers(1, mIndex, 0);
125	466450b5	Leszek Koltunski	mIndex[0] = -1;
126			}
127			}
128
129			///////////////////////////////////////////////////////////////////////////////////////////////////
130
131			void recreate()
132			{
133			mIndex[0] = -1;
134			}
135
136			///////////////////////////////////////////////////////////////////////////////////////////////////
137			// debugging only
138
139			String printDetails()
140			{
141			return getClass().getSimpleName();
142			}
143			}

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library / src / main / java / org / distorted / library / main / InternalBuffer.java @ b7074bc6