1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.opengl.util;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.GL2ES2;
import javax.media.opengl.GL2ES3;
import javax.media.opengl.GL2GL3;
import javax.media.opengl.GLException;
/**
* Utility to safely set and restore the pack and unpack pixel storage mode,
* regardless of the GLProfile.
*/
public class GLPixelStorageModes {
private int[] savedGL2GL3Modes = new int[8];
private int[] savedAlignment = new int[2];
private boolean saved = false;
/** Create instance w/o {@link #save(GL)} */
public GLPixelStorageModes() {}
/** Create instance w/ {@link #save(GL)} */
public GLPixelStorageModes(GL gl) { save(gl); }
/**
* Sets the {@link GL#GL_PACK_ALIGNMENT}.
* <p>
* Saves the pixel storage modes if not saved yet.
* </p>
*/
public final void setPackAlignment(GL gl, int packAlignment) {
save(gl);
gl.glPixelStorei(GL.GL_PACK_ALIGNMENT, packAlignment);
}
/**
* Sets the {@link GL#GL_UNPACK_ALIGNMENT}.
* <p>
* Saves the pixel storage modes if not saved yet.
* </p>
*/
public final void setUnpackAlignment(GL gl, int unpackAlignment) {
save(gl);
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, unpackAlignment);
}
/**
* Sets the {@link GL#GL_PACK_ALIGNMENT} and {@link GL#GL_UNPACK_ALIGNMENT}.
* <p>
* Saves the pixel storage modes if not saved yet.
* </p>
*/
public final void setAlignment(GL gl, int packAlignment, int unpackAlignment) {
setPackAlignment(gl, packAlignment);
setUnpackAlignment(gl, unpackAlignment);
}
/**
* Sets the {@link GL2ES3#GL_PACK_ROW_LENGTH}.
* <p>
* Saves the pixel storage modes if not saved yet.
* </p>
*/
public final void setPackRowLength(GL2ES3 gl, int packRowLength) {
save(gl);
gl.glPixelStorei(GL2ES3.GL_PACK_ROW_LENGTH, packRowLength);
}
/**
* Sets the {@link GL2ES2#GL_UNPACK_ROW_LENGTH}.
* <p>
* Saves the pixel storage modes if not saved yet.
* </p>
*/
public final void setUnpackRowLength(GL2ES2 gl, int unpackRowLength) {
save(gl);
gl.glPixelStorei(GL2ES2.GL_UNPACK_ROW_LENGTH, unpackRowLength);
}
/**
* Sets the {@link GL2ES3#GL_PACK_ROW_LENGTH} and {@link GL2ES2#GL_UNPACK_ROW_LENGTH}.
* <p>
* Saves the pixel storage modes if not saved yet.
* </p>
*/
public final void setRowLength(GL2ES3 gl, int packRowLength, int unpackRowLength) {
setPackRowLength(gl, packRowLength);
setUnpackRowLength(gl, unpackRowLength);
}
/**
* Save the pixel storage mode, if not saved yet.
* <p>
* Restore via {@link #restore(GL)}
* </p>
*/
public final void save(GL gl) {
if(saved) {
return;
}
if(gl.isGL2GL3()) {
if(gl.isGL2()) {
gl.getGL2().glPushClientAttrib(GL2.GL_CLIENT_PIXEL_STORE_BIT);
} else {
gl.glGetIntegerv(GL2ES2.GL_PACK_ALIGNMENT, savedAlignment, 0);
gl.glGetIntegerv(GL2ES2.GL_UNPACK_ALIGNMENT, savedAlignment, 1);
gl.glGetIntegerv(GL2GL3.GL_PACK_ROW_LENGTH, savedGL2GL3Modes, 0);
gl.glGetIntegerv(GL2GL3.GL_PACK_SKIP_ROWS, savedGL2GL3Modes, 1);
gl.glGetIntegerv(GL2GL3.GL_PACK_SKIP_PIXELS, savedGL2GL3Modes, 2);
gl.glGetIntegerv(GL2GL3.GL_PACK_SWAP_BYTES, savedGL2GL3Modes, 3);
gl.glGetIntegerv(GL2GL3.GL_UNPACK_ROW_LENGTH, savedGL2GL3Modes, 4);
gl.glGetIntegerv(GL2GL3.GL_UNPACK_SKIP_ROWS, savedGL2GL3Modes, 5);
gl.glGetIntegerv(GL2GL3.GL_UNPACK_SKIP_PIXELS, savedGL2GL3Modes, 6);
gl.glGetIntegerv(GL2GL3.GL_UNPACK_SWAP_BYTES, savedGL2GL3Modes, 7);
}
gl.glPixelStorei(GL2GL3.GL_PACK_ROW_LENGTH, 0);
gl.glPixelStorei(GL2GL3.GL_PACK_SKIP_ROWS, 0);
gl.glPixelStorei(GL2GL3.GL_PACK_SKIP_PIXELS, 0);
gl.glPixelStorei(GL2GL3.GL_PACK_SWAP_BYTES, 0);
gl.glPixelStorei(GL2GL3.GL_UNPACK_ROW_LENGTH, 0);
gl.glPixelStorei(GL2GL3.GL_UNPACK_SKIP_ROWS, 0);
gl.glPixelStorei(GL2GL3.GL_UNPACK_SKIP_PIXELS, 0);
gl.glPixelStorei(GL2GL3.GL_UNPACK_SWAP_BYTES, 0);
} else {
// embedded deals with pack/unpack alignment only
gl.glGetIntegerv(GL2ES2.GL_PACK_ALIGNMENT, savedAlignment, 0);
gl.glGetIntegerv(GL2ES2.GL_UNPACK_ALIGNMENT, savedAlignment, 1);
}
saved = true;
}
/**
* Restores the pixel storage mode.
* @throws GLException if not saved via one of the set methods.
*/
public final void restore(GL gl) throws GLException {
if(!saved) {
throw new GLException("pixel storage modes not saved");
}
if(gl.isGL2GL3()) {
if(gl.isGL2()) {
gl.getGL2().glPopClientAttrib();
} else {
gl.glPixelStorei(GL2ES2.GL_PACK_ALIGNMENT, savedAlignment[0]);
gl.glPixelStorei(GL2ES2.GL_UNPACK_ALIGNMENT, savedAlignment[1]);
gl.glPixelStorei(GL2GL3.GL_PACK_ROW_LENGTH, savedGL2GL3Modes[0]);
gl.glPixelStorei(GL2GL3.GL_PACK_SKIP_ROWS, savedGL2GL3Modes[1]);
gl.glPixelStorei(GL2GL3.GL_PACK_SKIP_PIXELS, savedGL2GL3Modes[2]);
gl.glPixelStorei(GL2GL3.GL_PACK_SWAP_BYTES, savedGL2GL3Modes[3]);
gl.glPixelStorei(GL2GL3.GL_UNPACK_ROW_LENGTH, savedGL2GL3Modes[4]);
gl.glPixelStorei(GL2GL3.GL_UNPACK_SKIP_ROWS, savedGL2GL3Modes[5]);
gl.glPixelStorei(GL2GL3.GL_UNPACK_SKIP_PIXELS, savedGL2GL3Modes[6]);
gl.glPixelStorei(GL2GL3.GL_UNPACK_SWAP_BYTES, savedGL2GL3Modes[7]);
}
} else {
// embedded deals with pack/unpack alignment only
gl.glPixelStorei(GL2ES2.GL_PACK_ALIGNMENT, savedAlignment[0]);
gl.glPixelStorei(GL2ES2.GL_UNPACK_ALIGNMENT, savedAlignment[1]);
}
saved = false;
}
}
|
