1
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
2
|
// Copyright 2016 Leszek Koltunski //
|
3
|
// //
|
4
|
// This file is part of Distorted. //
|
5
|
// //
|
6
|
// Distorted is free software: you can redistribute it and/or modify //
|
7
|
// 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
|
// Distorted is distributed in the hope that it will be useful, //
|
12
|
// 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
|
// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
|
18
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
19
|
|
20
|
package org.distorted.library;
|
21
|
|
22
|
import android.opengl.GLES30;
|
23
|
import android.opengl.Matrix;
|
24
|
import java.util.ArrayList;
|
25
|
|
26
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
27
|
|
28
|
abstract class DistortedOutputSurface extends DistortedSurface implements DistortedAttacheable
|
29
|
{
|
30
|
private ArrayList<DistortedNode> mChildren;
|
31
|
private int mNumChildren; // ==mChildren.length(), but we only create mChildren if the first one gets added
|
32
|
|
33
|
private float mFOV;
|
34
|
int mWidth,mHeight,mDepth;
|
35
|
float mDistance, mNear;
|
36
|
float[] mProjectionMatrix;
|
37
|
|
38
|
int mDepthCreated;
|
39
|
int[] mDepthH = new int[1];
|
40
|
int[] mFBOH = new int[1];
|
41
|
|
42
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
43
|
|
44
|
abstract DistortedFramebuffer getBuffer();
|
45
|
|
46
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
47
|
|
48
|
DistortedOutputSurface(int width, int height, int createColor, int createDepth, int fbo, int type)
|
49
|
{
|
50
|
super(width,height,createColor,type);
|
51
|
|
52
|
mProjectionMatrix = new float[16];
|
53
|
|
54
|
mWidth = width;
|
55
|
mHeight= height;
|
56
|
|
57
|
mFOV = 60.0f;
|
58
|
mNear= 0.5f;
|
59
|
|
60
|
mDepthCreated= createDepth;
|
61
|
mFBOH[0] = fbo;
|
62
|
mDepthH[0] = 0;
|
63
|
|
64
|
createProjection();
|
65
|
}
|
66
|
|
67
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
68
|
|
69
|
void createProjection()
|
70
|
{
|
71
|
if( mWidth>0 && mHeight>1 )
|
72
|
{
|
73
|
if( mFOV>0.0f ) // perspective projection
|
74
|
{
|
75
|
float a = 2.0f*(float)Math.tan(mFOV*Math.PI/360);
|
76
|
float q = mWidth*mNear;
|
77
|
float c = mHeight*mNear;
|
78
|
|
79
|
float left = -q/2;
|
80
|
float right = +q/2;
|
81
|
float bottom = -c/2;
|
82
|
float top = +c/2;
|
83
|
float near = c/a;
|
84
|
|
85
|
mDistance = mHeight/a;
|
86
|
float far = 2*mDistance-near;
|
87
|
mDepth = (int)((far-near)/2);
|
88
|
|
89
|
Matrix.frustumM(mProjectionMatrix, 0, left, right, bottom, top, near, far);
|
90
|
}
|
91
|
else // parallel projection
|
92
|
{
|
93
|
float left = -mWidth /2.0f;
|
94
|
float right = +mWidth /2.0f;
|
95
|
float bottom = -mHeight/2.0f;
|
96
|
float top = +mHeight/2.0f;
|
97
|
float near = mWidth+mHeight-mHeight*(1.0f-mNear);
|
98
|
mDistance = mWidth+mHeight;
|
99
|
float far = mWidth+mHeight+mHeight*(1.0f-mNear);
|
100
|
mDepth = (int)((far-near)/2);
|
101
|
|
102
|
Matrix.orthoM(mProjectionMatrix, 0, left, right, bottom, top, near, far);
|
103
|
}
|
104
|
}
|
105
|
}
|
106
|
|
107
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
108
|
|
109
|
int renderChildren(long time, int num, ArrayList<DistortedNode> children)
|
110
|
{
|
111
|
int numRenders = 0;
|
112
|
DistortedNode child;
|
113
|
DistortedFramebuffer fbo;
|
114
|
DistortedOutputSurface buffer;
|
115
|
|
116
|
// 1. Render all children that have postprocessing effects to their own buffer FBOs
|
117
|
|
118
|
for(int i=0; i<num; i++)
|
119
|
{
|
120
|
child = children.get(i);
|
121
|
fbo = child.getPostprocessingBuffer();
|
122
|
|
123
|
if( fbo!=null )
|
124
|
{
|
125
|
fbo.resizeFast(mWidth,mHeight);
|
126
|
numRenders += child.draw(time,fbo);
|
127
|
}
|
128
|
}
|
129
|
|
130
|
// 2. If we have rendered anything so far, and we are a Screen, then render to an
|
131
|
// intermediate FBO instead.
|
132
|
|
133
|
buffer = numRenders>0 ? getBuffer() : this;
|
134
|
|
135
|
// 3. Render all children without postprocessing effects to buffer
|
136
|
|
137
|
for(int i=0; i<num; i++)
|
138
|
{
|
139
|
child = children.get(i);
|
140
|
fbo = child.getPostprocessingBuffer();
|
141
|
|
142
|
if( fbo==null )
|
143
|
{
|
144
|
numRenders += child.draw(time,buffer);
|
145
|
}
|
146
|
}
|
147
|
|
148
|
// 4. For all postprocessing fbo,
|
149
|
// postprocess fbo
|
150
|
// merge to buffer
|
151
|
|
152
|
// TODO
|
153
|
|
154
|
// 5. finally blit to this if we have to
|
155
|
|
156
|
if( buffer!=this && ((DistortedFramebuffer)buffer).setAsInput() )
|
157
|
{
|
158
|
numRenders++;
|
159
|
DistortedEffects.blitPriv(this);
|
160
|
}
|
161
|
|
162
|
return numRenders;
|
163
|
}
|
164
|
|
165
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
166
|
// PUBLIC API
|
167
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
168
|
/**
|
169
|
* Draws all the attached children to this OutputSurface.
|
170
|
* <p>
|
171
|
* Must be called from a thread holding OpenGL Context.
|
172
|
*
|
173
|
* @param time Current time, in milliseconds. This will be passed to all the Effects stored in the children Nodes.
|
174
|
* @return Number of objects rendered.
|
175
|
*/
|
176
|
public int render(long time)
|
177
|
{
|
178
|
// change tree topology (attach and detach children)
|
179
|
/*
|
180
|
boolean changed =
|
181
|
*/
|
182
|
DistortedAttachDaemon.toDo();
|
183
|
/*
|
184
|
// debugging only
|
185
|
if( changed )
|
186
|
{
|
187
|
for(int i=0; i<mNumChildren; i++)
|
188
|
{
|
189
|
mChildren.get(i).debug(0);
|
190
|
}
|
191
|
|
192
|
DistortedNode.debugMap();
|
193
|
}
|
194
|
*/
|
195
|
// create and delete all underlying OpenGL resources
|
196
|
// Watch out: FIRST change topology, only then deal
|
197
|
// with OpenGL resources. That's because changing Tree
|
198
|
// can result in additional Framebuffers that would need
|
199
|
// to be created immediately, before the calls to drawRecursive()
|
200
|
toDo();
|
201
|
/*
|
202
|
// debugging only
|
203
|
if( changed )
|
204
|
{
|
205
|
DistortedSurface.debugLists();
|
206
|
}
|
207
|
*/
|
208
|
// mark OpenGL state as unknown
|
209
|
DistortedRenderState.reset();
|
210
|
|
211
|
int numRenders=0;
|
212
|
|
213
|
for(int i=0; i<mNumChildren; i++)
|
214
|
{
|
215
|
numRenders += mChildren.get(i).renderRecursive(time);
|
216
|
}
|
217
|
|
218
|
setAsOutput();
|
219
|
numRenders += renderChildren(time,mNumChildren,mChildren);
|
220
|
|
221
|
return numRenders;
|
222
|
}
|
223
|
|
224
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
225
|
/**
|
226
|
* Bind this Surface as a Framebuffer we can render to.
|
227
|
*/
|
228
|
public void setAsOutput()
|
229
|
{
|
230
|
GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
|
231
|
}
|
232
|
|
233
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
234
|
/**
|
235
|
* Create new Projection matrix.
|
236
|
*
|
237
|
* @param fov Vertical 'field of view' of the Projection frustrum (in degrees).
|
238
|
* Valid values: 0<=fov<180. FOV==0 means 'parallel projection'.
|
239
|
* @param near Distance between the screen plane and the near plane.
|
240
|
* Valid vaules: 0<near<1. When near==0, the Near Plane is exactly at the tip of the
|
241
|
* pyramid. When near==1 (illegal!) the near plane is equivalent to the screen plane.
|
242
|
*/
|
243
|
public void setProjection(float fov, float near)
|
244
|
{
|
245
|
if( fov < 180.0f && fov >=0.0f ) mFOV = fov;
|
246
|
if( near< 1.0f && near> 0.0f ) mNear= near;
|
247
|
|
248
|
createProjection();
|
249
|
}
|
250
|
|
251
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
252
|
/**
|
253
|
* Resize the underlying Framebuffer.
|
254
|
* <p>
|
255
|
* This method can be safely called mid-render as it doesn't interfere with rendering.
|
256
|
*
|
257
|
* @param width The new width.
|
258
|
* @param height The new height.
|
259
|
*/
|
260
|
public void resize(int width, int height)
|
261
|
{
|
262
|
if( mWidth!=width || mHeight!=height )
|
263
|
{
|
264
|
mWidth = width;
|
265
|
mHeight= height;
|
266
|
mSizeX = width;
|
267
|
mSizeY = height;
|
268
|
|
269
|
createProjection();
|
270
|
|
271
|
if( mColorCreated==CREATED )
|
272
|
{
|
273
|
markForCreation();
|
274
|
recreate();
|
275
|
}
|
276
|
}
|
277
|
}
|
278
|
|
279
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
280
|
/**
|
281
|
* Create a new DEPTH buffer and attach it or (param=false) detach an existing DEPTH attachment and recreate it.
|
282
|
*
|
283
|
* @param enable <bold>true</bold> if we want to attach a new DEPTH buffer to the FBO.<br>
|
284
|
* <bold>false</bold> if we want to detach the DEPTH attachment.
|
285
|
*/
|
286
|
public void enableDepth(boolean enable)
|
287
|
{
|
288
|
if( enable && mDepthCreated==DONT_CREATE )
|
289
|
{
|
290
|
mDepthCreated = NOT_CREATED_YET;
|
291
|
markForCreation();
|
292
|
}
|
293
|
if( !enable && mDepthCreated!=DONT_CREATE )
|
294
|
{
|
295
|
mDepthCreated = DONT_CREATE;
|
296
|
markForCreation();
|
297
|
}
|
298
|
}
|
299
|
|
300
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
301
|
/**
|
302
|
* Return true if the Surface contains a DEPTH attachment.
|
303
|
*
|
304
|
* @return <bold>true</bold> if the FBO contains a DEPTH attachment.
|
305
|
*/
|
306
|
public boolean hasDepth()
|
307
|
{
|
308
|
return mDepthCreated==CREATED;
|
309
|
}
|
310
|
|
311
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
312
|
/**
|
313
|
* Adds a new child to the last position in the list of our Surface's children.
|
314
|
* <p>
|
315
|
* We cannot do this mid-render - actual attachment will be done just before the next render, by the
|
316
|
* DistortedAttachDeamon (by calling attachNow())
|
317
|
*
|
318
|
* @param node The new Node to add.
|
319
|
*/
|
320
|
public void attach(DistortedNode node)
|
321
|
{
|
322
|
DistortedAttachDaemon.attach(this,node);
|
323
|
}
|
324
|
|
325
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
326
|
/**
|
327
|
* Adds a new child to the last position in the list of our Surface's children.
|
328
|
* <p>
|
329
|
* We cannot do this mid-render - actual attachment will be done just before the next render, by the
|
330
|
* DistortedAttachDeamon (by calling attachNow())
|
331
|
*
|
332
|
* @param surface InputSurface to initialize our child Node with.
|
333
|
* @param effects DistortedEffects to initialize our child Node with.
|
334
|
* @param mesh MeshObject to initialize our child Node with.
|
335
|
* @return the newly constructed child Node, or null if we couldn't allocate resources.
|
336
|
*/
|
337
|
public DistortedNode attach(DistortedInputSurface surface, DistortedEffects effects, MeshObject mesh)
|
338
|
{
|
339
|
DistortedNode node = new DistortedNode(surface,effects,mesh);
|
340
|
DistortedAttachDaemon.attach(this,node);
|
341
|
return node;
|
342
|
}
|
343
|
|
344
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
345
|
/**
|
346
|
* This is not really part of the public API. Has to be public only because it is a part of the
|
347
|
* DistortedAttacheable interface, which should really be a class that we extend here instead but
|
348
|
* Java has no multiple inheritance.
|
349
|
*
|
350
|
* @y.exclude
|
351
|
* @param node new Node to add.
|
352
|
*/
|
353
|
public void attachNow(DistortedNode node)
|
354
|
{
|
355
|
if( mChildren==null ) mChildren = new ArrayList<>(2);
|
356
|
mChildren.add(node);
|
357
|
mNumChildren++;
|
358
|
}
|
359
|
|
360
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
361
|
/**
|
362
|
* Removes the first occurrence of a specified child from the list of children of our Surface.
|
363
|
* <p>
|
364
|
* A bit questionable method as there can be many different Nodes attached as children, some
|
365
|
* of them having the same Effects but - for instance - different Mesh. Use with care.
|
366
|
* <p>
|
367
|
* We cannot do this mid-render - actual detachment will be done just before the next render, by the
|
368
|
* DistortedAttachDeamon (by calling detachNow())
|
369
|
*
|
370
|
* @param effects DistortedEffects to remove.
|
371
|
*/
|
372
|
public void detach(DistortedEffects effects)
|
373
|
{
|
374
|
long id = effects.getID();
|
375
|
DistortedNode node;
|
376
|
|
377
|
for(int i=0; i<mNumChildren; i++)
|
378
|
{
|
379
|
node = mChildren.get(i);
|
380
|
|
381
|
if( node.getEffects().getID()==id )
|
382
|
{
|
383
|
DistortedAttachDaemon.detach(this,node);
|
384
|
break;
|
385
|
}
|
386
|
}
|
387
|
}
|
388
|
|
389
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
390
|
/**
|
391
|
* Removes the first occurrence of a specified child from the list of children of our Surface.
|
392
|
* <p>
|
393
|
* We cannot do this mid-render - actual attachment will be done just before the next render, by the
|
394
|
* DistortedAttachDeamon (by calling detachNow())
|
395
|
*
|
396
|
* @param node The Node to remove.
|
397
|
*/
|
398
|
public void detach(DistortedNode node)
|
399
|
{
|
400
|
DistortedAttachDaemon.detach(this,node);
|
401
|
}
|
402
|
|
403
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
404
|
/**
|
405
|
* This is not really part of the public API. Has to be public only because it is a part of the
|
406
|
* DistortedAttacheable interface, which should really be a class that we extend here instead but
|
407
|
* Java has no multiple inheritance.
|
408
|
*
|
409
|
* @y.exclude
|
410
|
* @param node The Node to remove.
|
411
|
*/
|
412
|
public void detachNow(DistortedNode node)
|
413
|
{
|
414
|
if( mNumChildren>0 && mChildren.remove(node) )
|
415
|
{
|
416
|
mNumChildren--;
|
417
|
}
|
418
|
}
|
419
|
|
420
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
421
|
/**
|
422
|
* Removes all children Nodes.
|
423
|
* <p>
|
424
|
* We cannot do this mid-render - actual attachment will be done just before the next render, by the
|
425
|
* DistortedAttachDeamon (by calling detachAllNow())
|
426
|
*/
|
427
|
public void detachAll()
|
428
|
{
|
429
|
DistortedAttachDaemon.detachAll(this);
|
430
|
}
|
431
|
|
432
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
433
|
/**
|
434
|
* This is not really part of the public API. Has to be public only because it is a part of the
|
435
|
* DistortedAttacheable interface, which should really be a class that we extend here instead but
|
436
|
* Java has no multiple inheritance.
|
437
|
*
|
438
|
* @y.exclude
|
439
|
*/
|
440
|
public void detachAllNow()
|
441
|
{
|
442
|
if( mNumChildren>0 )
|
443
|
{
|
444
|
mNumChildren = 0;
|
445
|
mChildren.clear();
|
446
|
}
|
447
|
}
|
448
|
}
|