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

library / src / main / java / org / distorted / library / main / InternalBuffer.java @ 246d021c

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	22e60fba	Leszek Koltunski	import java.nio.ByteBuffer;
24			import java.nio.ByteOrder;
25			import java.nio.FloatBuffer;
26	466450b5	Leszek Koltunski
27			///////////////////////////////////////////////////////////////////////////////////////////////////
28			/**
29			* Implements OpenGL buffer object such as GL_ARRAY_BUFFER or GL_TRANSFORM_FEEDBACK_BUFFER.
30			* Main point: deal with Android lifecycle and recreate the buffer on loss of OpenGL context.
31			* <p>
32			* Not part of public API, do not document (public only because has to be used in Meshes)
33			*
34			* @y.exclude
35			*/
36	7602a827	Leszek Koltunski	public class InternalBuffer extends InternalObject
37	466450b5	Leszek Koltunski	{
38	7e53a35f	Leszek Koltunski	private final int[] mIndex;
39	466450b5	Leszek Koltunski	private int mTarget, mSize, mUsage;
40	342a6773	Leszek Koltunski	private FloatBuffer mBuffer;
41	466450b5	Leszek Koltunski
42			///////////////////////////////////////////////////////////////////////////////////////////////////
43
44	7602a827	Leszek Koltunski	public InternalBuffer(int target, int usage)
45	466450b5	Leszek Koltunski	{
46	7602a827	Leszek Koltunski	super(InternalObject.TYPE_USER);
47	466450b5	Leszek Koltunski
48			mIndex = new int[1];
49			mTarget = target;
50			mUsage = usage;
51	ccd98f1c	Leszek Koltunski	mBuffer = null;
52			mSize = 0;
53	466450b5	Leszek Koltunski
54			recreate();
55			}
56
57			///////////////////////////////////////////////////////////////////////////////////////////////////
58	22e60fba	Leszek Koltunski	// must be called from a thread holding OpenGL Context.
59	466450b5	Leszek Koltunski
60	7e53a35f	Leszek Koltunski	public int createImmediately(int size, float[] buffer)
61	466450b5	Leszek Koltunski	{
62	22e60fba	Leszek Koltunski	if( mIndex[0]<0 )
63			{
64			mSize= size;
65	ccd98f1c	Leszek Koltunski
66	22e60fba	Leszek Koltunski	if( buffer!=null )
67			{
68			FloatBuffer buf = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder()).asFloatBuffer();
69			buf.put(buffer).position(0);
70			mBuffer = buf;
71			}
72			else
73			{
74			mBuffer = null;
75			}
76
77	b7074bc6	Leszek Koltunski	GLES30.glGenBuffers( 1, mIndex, 0);
78			GLES30.glBindBuffer( mTarget, mIndex[0]);
79			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
80			GLES30.glBindBuffer( mTarget, 0);
81	22e60fba	Leszek Koltunski
82			markWasCreatedImmediately();
83			}
84	7e53a35f	Leszek Koltunski
85			return mIndex[0];
86	22e60fba	Leszek Koltunski	}
87
88	342a6773	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
89			// buffer non-null!!
90
91			public void update(float[] buffer)
92			{
93			mBuffer.put(buffer).position(0);
94
95			GLES30.glBindBuffer( mTarget, mIndex[0]);
96			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
97			GLES30.glBindBuffer( mTarget, 0);
98			}
99
100	22e60fba	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
101
102			public void invalidate()
103			{
104			recreate();
105	466450b5	Leszek Koltunski	}
106
107			///////////////////////////////////////////////////////////////////////////////////////////////////
108			// must be called from a thread holding OpenGL Context
109
110			void create()
111			{
112			if( mIndex[0]<0 )
113			{
114	b7074bc6	Leszek Koltunski	GLES30.glGenBuffers( 1, mIndex, 0);
115			GLES30.glBindBuffer( mTarget, mIndex[0]);
116			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
117			GLES30.glBindBuffer( mTarget, 0);
118	466450b5	Leszek Koltunski	}
119			}
120
121			///////////////////////////////////////////////////////////////////////////////////////////////////
122			// must be called from a thread holding OpenGL Context
123
124			void delete()
125			{
126			if( mIndex[0]>=0 )
127			{
128	b7074bc6	Leszek Koltunski	GLES30.glDeleteBuffers(1, mIndex, 0);
129	466450b5	Leszek Koltunski	mIndex[0] = -1;
130			}
131			}
132
133			///////////////////////////////////////////////////////////////////////////////////////////////////
134
135			void recreate()
136			{
137			mIndex[0] = -1;
138			}
139
140			///////////////////////////////////////////////////////////////////////////////////////////////////
141			// debugging only
142
143			String printDetails()
144			{
145			return getClass().getSimpleName();
146			}
147			}

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library / src / main / java / org / distorted / library / main / InternalBuffer.java @ 246d021c