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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/**
* Copyright 2013 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.GL2ES3;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLException;
import com.jogamp.opengl.util.GLPixelBuffer.GLPixelAttributes;
/**
* Variation of {@link TileRenderer} w/o using fixed tiles but arbitrary rectangular regions.
* <p>
* See {@link TileRendererBase} for details.
* </p>
*/
public class RandomTileRenderer extends TileRendererBase {
private boolean tileRectSet = false;
/**
* Creates a new TileRenderer object
*/
public RandomTileRenderer() {
super();
}
@Override
public final int getParam(final int pname) {
switch (pname) {
case TR_IMAGE_WIDTH:
return imageSize.getWidth();
case TR_IMAGE_HEIGHT:
return imageSize.getHeight();
case TR_CURRENT_TILE_X_POS:
return currentTileXPos;
case TR_CURRENT_TILE_Y_POS:
return currentTileYPos;
case TR_CURRENT_TILE_WIDTH:
return currentTileWidth;
case TR_CURRENT_TILE_HEIGHT:
return currentTileHeight;
default:
throw new IllegalArgumentException("Invalid pname: "+pname);
}
}
/**
* Set the tile rectangle for the subsequent rendering calls.
*
* @throws IllegalArgumentException is tile x/y are < 0 or tile size is <= 0x0
*/
public void setTileRect(final int tX, final int tY, final int tWidth, final int tHeight) throws IllegalStateException, IllegalArgumentException {
if( 0 > tX || 0 > tY ) {
throw new IllegalArgumentException("Tile pos must be >= 0/0");
}
if( 0 >= tWidth || 0 >= tHeight ) {
throw new IllegalArgumentException("Tile size must be > 0x0");
}
this.currentTileXPos = tX;
this.currentTileYPos = tY;
this.currentTileWidth = tWidth;
this.currentTileHeight = tHeight;
tileRectSet = true;
}
@Override
public final boolean isSetup() {
return 0 < imageSize.getWidth() && 0 < imageSize.getHeight() && tileRectSet;
}
/**
* {@inheritDoc}
*
* <p>
* <i>end of tiling</i> is never reached w/ {@link RandomRileRenderer},
* i.e. method always returns false.
* </p>
*/
@Override
public final boolean eot() { return false; }
/**
* {@inheritDoc}
*
* Reset internal states of {@link RandomTileRenderer} are: <i>none</i>.
*/
@Override
public final void reset() { }
/**
* {@inheritDoc}
*
* @throws IllegalStateException if {@link #setImageSize(int, int) image-size} has not been set or
* {@link #setTileRect(int, int, int, int) tile-rect} has not been set.
*/
@Override
public final void beginTile(final GL gl) throws IllegalStateException, GLException {
if( 0 >= imageSize.getWidth() || 0 >= imageSize.getHeight() ) {
throw new IllegalStateException("Image size has not been set");
}
if( !tileRectSet ) {
throw new IllegalStateException("tileRect has not been set");
}
validateGL(gl);
gl.glViewport( 0, 0, currentTileWidth, currentTileHeight );
if( DEBUG ) {
System.err.println("TileRenderer.begin.X: "+this.toString());
}
// Do not forget to issue:
// reshape( 0, 0, tW, tH );
// which shall reflect tile renderer fileds: currentTileXPos, currentTileYPos and imageSize
beginCalled = true;
}
@Override
public void endTile( final GL gl ) throws IllegalStateException, GLException {
if( !beginCalled ) {
throw new IllegalStateException("beginTile(..) has not been called");
}
validateGL(gl);
// be sure OpenGL rendering is finished
gl.glFlush();
// implicitly save current glPixelStore values
psm.setPackAlignment(gl, 1);
final GL2ES3 gl2es3;
final int readBuffer;
if( gl.isGL2ES3() ) {
gl2es3 = gl.getGL2ES3();
readBuffer = gl2es3.getDefaultReadBuffer();
gl2es3.glReadBuffer(readBuffer);
} else {
gl2es3 = null;
readBuffer = 0; // undef. probably default: GL_FRONT (single buffering) GL_BACK (double buffering)
}
if( DEBUG ) {
System.err.println("TileRenderer.end.0: readBuffer 0x"+Integer.toHexString(readBuffer)+", "+this.toString());
}
final int tmp[] = new int[1];
if( tileBuffer != null ) {
final GLPixelAttributes pixelAttribs = tileBuffer.pixelAttributes;
final int srcX = 0;
final int srcY = 0;
final int srcWidth = currentTileWidth;
final int srcHeight = currentTileHeight;
final int readPixelSize = GLBuffers.sizeof(gl, tmp, pixelAttribs.bytesPerPixel, srcWidth, srcHeight, 1, true);
tileBuffer.clear();
if( tileBuffer.requiresNewBuffer(gl, srcWidth, srcHeight, readPixelSize) ) {
throw new IndexOutOfBoundsException("Required " + readPixelSize + " bytes of buffer, only had " + tileBuffer);
}
gl.glReadPixels( srcX, srcY, srcWidth, srcHeight, pixelAttribs.format, pixelAttribs.type, tileBuffer.buffer);
// be sure OpenGL rendering is finished
gl.glFlush();
tileBuffer.position( readPixelSize );
tileBuffer.flip();
}
if( imageBuffer != null ) {
final GLPixelAttributes pixelAttribs = imageBuffer.pixelAttributes;
final int srcX = 0;
final int srcY = 0;
final int srcWidth = currentTileWidth;
final int srcHeight = currentTileHeight;
/* setup pixel store for glReadPixels */
final int rowLength = imageSize.getWidth();
psm.setPackRowLength(gl2es3, rowLength);
/* read the tile into the final image */
final int readPixelSize = GLBuffers.sizeof(gl, tmp, pixelAttribs.bytesPerPixel, srcWidth, srcHeight, 1, true);
final int ibPos = ( currentTileXPos + ( currentTileYPos * rowLength ) ) * pixelAttribs.bytesPerPixel; // skipPixels + skipRows
final int ibLim = ibPos + readPixelSize;
imageBuffer.clear();
if( imageBuffer.requiresNewBuffer(gl, srcWidth, srcHeight, readPixelSize) ) {
throw new IndexOutOfBoundsException("Required " + ibLim + " bytes of buffer, only had " + imageBuffer);
}
imageBuffer.position(ibPos);
gl.glReadPixels( srcX, srcY, srcWidth, srcHeight, pixelAttribs.format, pixelAttribs.type, imageBuffer.buffer);
// be sure OpenGL rendering is finished
gl.glFlush();
imageBuffer.position( ibLim );
imageBuffer.flip();
}
/* restore previous glPixelStore values */
psm.restore(gl);
beginCalled = false;
}
/**
* Rendering one tile, by simply calling {@link GLAutoDrawable#display()}.
*
* @throws IllegalStateException if no {@link GLAutoDrawable} is {@link #attachAutoDrawable(GLAutoDrawable) attached}
* or imageSize is not set
*/
public void display(final int tX, final int tY, final int tWidth, final int tHeight) throws IllegalStateException {
setTileRect(tX, tY, tWidth, tHeight);
display();
}
}
|
