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

library / src / main / java / org / distorted / library / main / InternalBuffer.java @ 178983f4

1	466450b5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
2	2e569ff6	Leszek Koltunski	// Copyright 2018 Leszek Koltunski leszek@koltunski.pl //
3	466450b5	Leszek Koltunski	// //
4	46b572b5	Leszek Koltunski	// This file is part of Distorted. //
5	466450b5	Leszek Koltunski	// //
6	2e569ff6	Leszek Koltunski	// This library is free software; you can redistribute it and/or //
7			// modify it under the terms of the GNU Lesser General Public //
8			// License as published by the Free Software Foundation; either //
9			// version 2.1 of the License, or (at your option) any later version. //
10	466450b5	Leszek Koltunski	// //
11	2e569ff6	Leszek Koltunski	// This library 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	2e569ff6	Leszek Koltunski	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
14			// Lesser General Public License for more details. //
15	466450b5	Leszek Koltunski	// //
16	2e569ff6	Leszek Koltunski	// You should have received a copy of the GNU Lesser General Public //
17			// License along with this library; if not, write to the Free Software //
18			// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //
19	466450b5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
20
21			package org.distorted.library.main;
22
23	b7074bc6	Leszek Koltunski	import android.opengl.GLES30;
24	0bd9f644	Leszek Koltunski
25			import java.nio.Buffer;
26	22e60fba	Leszek Koltunski	import java.nio.ByteBuffer;
27			import java.nio.ByteOrder;
28			import java.nio.FloatBuffer;
29	0bd9f644	Leszek Koltunski	import java.nio.IntBuffer;
30	466450b5	Leszek Koltunski
31			///////////////////////////////////////////////////////////////////////////////////////////////////
32			/**
33			* Implements OpenGL buffer object such as GL_ARRAY_BUFFER or GL_TRANSFORM_FEEDBACK_BUFFER.
34			* Main point: deal with Android lifecycle and recreate the buffer on loss of OpenGL context.
35			* <p>
36			* Not part of public API, do not document (public only because has to be used in Meshes)
37			*
38			* @y.exclude
39			*/
40	7602a827	Leszek Koltunski	public class InternalBuffer extends InternalObject
41	466450b5	Leszek Koltunski	{
42	43814a57	Leszek Koltunski	private static final int DONE = 0;
43	728a7820	Leszek Koltunski	private static final int RECREATE = 1;
44			private static final int UPDATE = 2;
45
46	de77a6c5	Leszek Koltunski	private int mStatus, mSize;
47	7e53a35f	Leszek Koltunski	private final int[] mIndex;
48	de77a6c5	Leszek Koltunski	private final int mTarget, mUsage;
49	0bd9f644	Leszek Koltunski	private Buffer mBuffer;
50	466450b5	Leszek Koltunski
51			///////////////////////////////////////////////////////////////////////////////////////////////////
52
53	7602a827	Leszek Koltunski	public InternalBuffer(int target, int usage)
54	466450b5	Leszek Koltunski	{
55	9ec374e8	Leszek Koltunski	super(InternalObject.TYPE_USER, InternalObject.STORAGE_PRIVATE );
56	466450b5	Leszek Koltunski
57			mIndex = new int[1];
58			mTarget = target;
59			mUsage = usage;
60	ccd98f1c	Leszek Koltunski	mBuffer = null;
61			mSize = 0;
62	43814a57	Leszek Koltunski	mStatus = RECREATE;
63	466450b5	Leszek Koltunski	}
64
65			///////////////////////////////////////////////////////////////////////////////////////////////////
66	22e60fba	Leszek Koltunski	// must be called from a thread holding OpenGL Context.
67	466450b5	Leszek Koltunski
68	0bd9f644	Leszek Koltunski	public int createImmediatelyFloat(int size, float[] buffer)
69	466450b5	Leszek Koltunski	{
70	728a7820	Leszek Koltunski	if( (mStatus & RECREATE) != 0 )
71	22e60fba	Leszek Koltunski	{
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	728a7820	Leszek Koltunski	else if( (mStatus & UPDATE) != 0 )
93			{
94			updateFloat(buffer);
95			}
96
97	43814a57	Leszek Koltunski	mStatus = DONE;
98	7e53a35f	Leszek Koltunski
99			return mIndex[0];
100	22e60fba	Leszek Koltunski	}
101
102	0bd9f644	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
103			// must be called from a thread holding OpenGL Context.
104
105			public int createImmediatelyInt(int size, int[] buffer)
106			{
107	728a7820	Leszek Koltunski	if( (mStatus & RECREATE) != 0 )
108	0bd9f644	Leszek Koltunski	{
109			mSize= size;
110
111			if( buffer!=null )
112			{
113			IntBuffer buf = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder()).asIntBuffer();
114			buf.put(buffer).position(0);
115			mBuffer = buf;
116			}
117			else
118			{
119			mBuffer = null;
120			}
121
122			GLES30.glGenBuffers( 1, mIndex, 0);
123			GLES30.glBindBuffer( mTarget, mIndex[0]);
124			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
125			GLES30.glBindBuffer( mTarget, 0);
126
127			markWasCreatedImmediately();
128			}
129	728a7820	Leszek Koltunski	else if( (mStatus & UPDATE) != 0 )
130			{
131			updateInt(buffer);
132			}
133
134	43814a57	Leszek Koltunski	mStatus = DONE;
135	0bd9f644	Leszek Koltunski
136			return mIndex[0];
137			}
138
139			///////////////////////////////////////////////////////////////////////////////////////////////////
140			// buffer non-null!!
141
142			public void updateFloat(float[] buffer)
143			{
144			((FloatBuffer)mBuffer).put(buffer).position(0);
145
146			GLES30.glBindBuffer( mTarget, mIndex[0]);
147			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
148			GLES30.glBindBuffer( mTarget, 0);
149	43814a57	Leszek Koltunski
150			mStatus &= (~UPDATE);
151	0bd9f644	Leszek Koltunski	}
152
153	342a6773	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
154			// buffer non-null!!
155
156	0bd9f644	Leszek Koltunski	public void updateInt(int[] buffer)
157	342a6773	Leszek Koltunski	{
158	0bd9f644	Leszek Koltunski	((IntBuffer)mBuffer).put(buffer).position(0);
159	342a6773	Leszek Koltunski
160			GLES30.glBindBuffer( mTarget, mIndex[0]);
161			GLES30.glBufferData( mTarget, mSize, mBuffer, mUsage);
162			GLES30.glBindBuffer( mTarget, 0);
163	43814a57	Leszek Koltunski
164			mStatus &= (~UPDATE);
165	342a6773	Leszek Koltunski	}
166
167	22e60fba	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
168
169			public void invalidate()
170			{
171	728a7820	Leszek Koltunski	mStatus \|= UPDATE;
172	466450b5	Leszek Koltunski	}
173
174			///////////////////////////////////////////////////////////////////////////////////////////////////
175	b0ac5b29	Leszek Koltunski	// Intentionally empty, no need to do anything here since it will be done in createImmediatelyXXX().
176			// In fact, recreating a Mesh's mVBO1 here - rather than in createImmediatelyFloat - was the reason
177			// of the 'disappearing cube after the mesh has changed from nice to simple' bug. I don't quite
178			// understand why TBH.
179	466450b5	Leszek Koltunski
180			void create()
181			{
182	43814a57	Leszek Koltunski
183	466450b5	Leszek Koltunski	}
184
185			///////////////////////////////////////////////////////////////////////////////////////////////////
186			// must be called from a thread holding OpenGL Context
187
188			void delete()
189			{
190	728a7820	Leszek Koltunski	GLES30.glDeleteBuffers(1, mIndex, 0);
191			mStatus \|= RECREATE;
192			removeFromDone();
193	466450b5	Leszek Koltunski	}
194
195			///////////////////////////////////////////////////////////////////////////////////////////////////
196
197	728a7820	Leszek Koltunski	public void recreate()
198	466450b5	Leszek Koltunski	{
199	728a7820	Leszek Koltunski	mStatus \|= RECREATE;
200	466450b5	Leszek Koltunski	}
201
202			///////////////////////////////////////////////////////////////////////////////////////////////////
203			// debugging only
204
205			String printDetails()
206			{
207			return getClass().getSimpleName();
208			}
209			}

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library / src / main / java / org / distorted / library / main / InternalBuffer.java @ 178983f4