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

library / src / main / java / org / distorted / library / DistortedFramebuffer.java @ a31dbc5c

1	f6fb3c6d	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
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	194ab46f	Leszek Koltunski	import android.opengl.GLES30;
23	f6fb3c6d	Leszek Koltunski
24			///////////////////////////////////////////////////////////////////////////////////////////////////
25	dedacd82	Leszek Koltunski	/**
26			* Class which represents a OpenGL Framebuffer object.
27	71c3fecc	Leszek Koltunski	* <p>
28	c5369f1b	leszek	* User is able to create offscreen FBOs and both a) render to them b) use their COLOR0 attachment as
29	2ed1c692	leszek	* an input texture. Attaching Depths and/or Stencils is also possible.
30	dedacd82	Leszek Koltunski	*/
31	af4cc5db	Leszek Koltunski	public class DistortedFramebuffer extends DistortedOutputSurface implements DistortedInputSurface
32	f6fb3c6d	Leszek Koltunski	{
33	bd3da5b2	Leszek Koltunski
34	f6fb3c6d	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
35	6537ba91	Leszek Koltunski	// Must be called from a thread holding OpenGL Context
36	f6fb3c6d	Leszek Koltunski
37	f8377ef8	leszek	void create()
38	f6fb3c6d	Leszek Koltunski	{
39	c7da4e65	leszek	if( mColorCreated==NOT_CREATED_YET )
40	7cf783cb	Leszek Koltunski	{
41	9ed80185	Leszek Koltunski	GLES30.glGenTextures( mNumColors, mColorH, 0);
42	133cbb2b	Leszek Koltunski	GLES30.glGenFramebuffers(1, mFBOH, 0);
43			GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
44	9ed80185	Leszek Koltunski
45			for(int i=0; i<mNumColors; i++)
46			{
47			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[i]);
48			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_REPEAT);
49			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_REPEAT);
50			GLES30.glTexParameterf(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_NEAREST);
51			GLES30.glTexParameterf(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_LINEAR);
52			GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_RGBA, mWidth, mHeight, 0, GLES30.GL_RGBA, GLES30.GL_UNSIGNED_BYTE, null);
53			}
54	0f011027	Leszek Koltunski	GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_COLOR_ATTACHMENT0, GLES30.GL_TEXTURE_2D, mColorH[0], 0);
55	9ed80185	Leszek Koltunski	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);
56	89de975c	leszek	GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);
57	dedacd82	Leszek Koltunski
58	c7da4e65	leszek	mColorCreated = checkStatus("color");
59	7cf783cb	Leszek Koltunski	}
60	89de975c	leszek	if( mDepthStencilCreated==NOT_CREATED_YET ) // we need to create a new DEPTH or STENCIL attachment
61	8c327653	Leszek Koltunski	{
62	89de975c	leszek	GLES30.glGenTextures(1, mDepthStencilH, 0);
63			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mDepthStencilH[0]);
64	194ab46f	Leszek Koltunski	GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_REPEAT);
65			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_REPEAT);
66			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_NEAREST);
67			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_NEAREST);
68	8c327653	Leszek Koltunski
69	89de975c	leszek	if( mDepthStencil==DEPTH_NO_STENCIL )
70	65e83759	Leszek Koltunski	{
71			GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_DEPTH_COMPONENT, mWidth, mHeight, 0, GLES30.GL_DEPTH_COMPONENT, GLES30.GL_UNSIGNED_INT, null);
72			}
73	89de975c	leszek	else if( mDepthStencil==BOTH_DEPTH_STENCIL )
74	65e83759	Leszek Koltunski	{
75			GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_DEPTH24_STENCIL8, mWidth, mHeight, 0, GLES30.GL_DEPTH_STENCIL, GLES30.GL_UNSIGNED_INT_24_8, null);
76			}
77	89de975c	leszek
78			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);
79	133cbb2b	Leszek Koltunski	GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
80	8c327653	Leszek Koltunski
81	89de975c	leszek	if( mDepthStencil==DEPTH_NO_STENCIL )
82	65e83759	Leszek Koltunski	{
83	89de975c	leszek	GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_ATTACHMENT, GLES30.GL_TEXTURE_2D, mDepthStencilH[0], 0);
84	65e83759	Leszek Koltunski	}
85	89de975c	leszek	else if( mDepthStencil==BOTH_DEPTH_STENCIL )
86	65e83759	Leszek Koltunski	{
87	89de975c	leszek	GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_STENCIL_ATTACHMENT, GLES30.GL_TEXTURE_2D, mDepthStencilH[0], 0);
88	65e83759	Leszek Koltunski	}
89	89de975c	leszek
90			GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);
91
92			mDepthStencilCreated = checkStatus("depth");
93	8c327653	Leszek Koltunski	}
94	89de975c	leszek	if( mDepthStencilCreated==DONT_CREATE && mDepthStencilH[0]>0 ) // we need to detach and recreate the DEPTH attachment.
95	8c327653	Leszek Koltunski	{
96	89de975c	leszek	GLES30.glDeleteTextures(1, mDepthStencilH, 0);
97			mDepthStencilH[0]=0;
98	8c327653	Leszek Koltunski	}
99	8337fa41	Leszek Koltunski	}
100
101			///////////////////////////////////////////////////////////////////////////////////////////////////
102
103	c7da4e65	leszek	private int checkStatus(String message)
104	8337fa41	Leszek Koltunski	{
105	194ab46f	Leszek Koltunski	int status = GLES30.glCheckFramebufferStatus(GLES30.GL_FRAMEBUFFER);
106	8337fa41	Leszek Koltunski
107	194ab46f	Leszek Koltunski	if(status != GLES30.GL_FRAMEBUFFER_COMPLETE)
108	8337fa41	Leszek Koltunski	{
109			android.util.Log.e("DistortedFramebuffer", "FRAMEBUFFER INCOMPLETE, "+message+" error="+status);
110
111	133cbb2b	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
112	89de975c	leszek	GLES30.glDeleteTextures(1, mDepthStencilH, 0);
113	133cbb2b	Leszek Koltunski	GLES30.glDeleteFramebuffers(1, mFBOH, 0);
114	c7da4e65	leszek	mFBOH[0]= 0;
115	8337fa41	Leszek Koltunski
116	c7da4e65	leszek	return FAILED_TO_CREATE;
117	8337fa41	Leszek Koltunski	}
118	8c327653	Leszek Koltunski
119	c7da4e65	leszek	return CREATED;
120	f6fb3c6d	Leszek Koltunski	}
121
122			///////////////////////////////////////////////////////////////////////////////////////////////////
123	6537ba91	Leszek Koltunski	// Must be called from a thread holding OpenGL Context
124	f6fb3c6d	Leszek Koltunski
125	227ac49a	Leszek Koltunski	void delete()
126	f6fb3c6d	Leszek Koltunski	{
127	c7da4e65	leszek	if( mColorH[0]>0 )
128	e6cf7d50	Leszek Koltunski	{
129	133cbb2b	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
130	c7da4e65	leszek	mColorH[0] = 0;
131			mColorCreated = NOT_CREATED_YET;
132	5b959cc5	Leszek Koltunski	}
133	bd3da5b2	Leszek Koltunski
134	5b959cc5	Leszek Koltunski	if( mDepthStencilH[0]>0 )
135			{
136			GLES30.glDeleteTextures(1, mDepthStencilH, 0);
137			mDepthStencilH[0]=0;
138			mDepthStencilCreated = NOT_CREATED_YET;
139	e6cf7d50	Leszek Koltunski	}
140	5b959cc5	Leszek Koltunski
141			GLES30.glDeleteFramebuffers(1, mFBOH, 0);
142			mFBOH[0] = 0;
143	bd3da5b2	Leszek Koltunski	}
144
145	4ebbb17a	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
146			// called from onDestroy(); mark OpenGL assets as 'not created'
147
148	f8377ef8	leszek	void recreate()
149	4ebbb17a	Leszek Koltunski	{
150	05ecc6fe	Leszek Koltunski	if( mColorCreated!=DONT_CREATE )
151			{
152			mColorCreated = NOT_CREATED_YET;
153			mColorH[0] = 0;
154			}
155	89de975c	leszek	if( mDepthStencilCreated!=DONT_CREATE )
156	05ecc6fe	Leszek Koltunski	{
157	89de975c	leszek	mDepthStencilCreated = NOT_CREATED_YET;
158			mDepthStencilH[0] = 0;
159	05ecc6fe	Leszek Koltunski	}
160	4ebbb17a	Leszek Koltunski	}
161
162	af27df87	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
163	09ab7524	Leszek Koltunski	// create SYSTEM or TREE framebuffers (those are just like normal FBOs, just hold information
164			// that they were autocreated only for the Library's internal purposes (SYSTEM) or for using
165			// inside a Tree of DistortedNodes (TREE)
166			// SYSTEM surfaces do not get removed in onDestroy().
167	af27df87	leszek
168	9ed80185	Leszek Koltunski	DistortedFramebuffer(int numcolors, int depthStencil, int type, int width, int height)
169	af27df87	leszek	{
170	9ed80185	Leszek Koltunski	super(width,height,NOT_CREATED_YET,numcolors,depthStencil,NOT_CREATED_YET, type);
171	af27df87	leszek	}
172
173	f2367b75	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
174			// For setting the Depth texture as input to fragment shaders that merge many planes. (currently: blur2)
175
176			boolean setAsDepth()
177			{
178	89de975c	leszek	if( mDepthStencilH[0]>0 )
179	f2367b75	Leszek Koltunski	{
180			GLES30.glActiveTexture(GLES30.GL_TEXTURE1);
181	89de975c	leszek	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mDepthStencilH[0]);
182	f2367b75	Leszek Koltunski	return true;
183			}
184
185			return false;
186			}
187
188	f6fb3c6d	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
189			// PUBLIC API
190	dedacd82	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
191	cdd5e827	Leszek Koltunski	/**
192	9ed80185	Leszek Koltunski	* Create new offscreen Framebuffer with configurable number of COLOR, DEPTH and STENCIL attachments.
193	cdd5e827	Leszek Koltunski	*
194	9ed80185	Leszek Koltunski	* @param width Width of all the COLOR attachments.
195			* @param height Height of all the COLOR attachments.
196			* @param numcolors How many COLOR attachments to create?
197	89de975c	leszek	* @param depthStencil Add DEPTH or STENCIL attachment?
198	23eecbd9	Leszek Koltunski	* Valid values: NO_DEPTH_NO_STENCIL, DEPTH_NO_STENCIL, BOTH_DEPTH_STENCIL.
199	cdd5e827	Leszek Koltunski	*/
200			@SuppressWarnings("unused")
201	9ed80185	Leszek Koltunski	public DistortedFramebuffer(int width, int height, int numcolors, int depthStencil)
202	cdd5e827	Leszek Koltunski	{
203	9ed80185	Leszek Koltunski	super(width,height,NOT_CREATED_YET,numcolors,depthStencil,NOT_CREATED_YET,TYPE_USER);
204	cdd5e827	Leszek Koltunski	}
205
206	133cbb2b	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
207
208	dedacd82	Leszek Koltunski	/**
209	9ed80185	Leszek Koltunski	* Create new offscreen Framebuffer with COLOR0 attachment only.
210	dedacd82	Leszek Koltunski	*
211	9ed80185	Leszek Koltunski	* @param width Width of the COLOR0 attachment.
212			* @param height Height of the COLOR0 attachment.
213	dedacd82	Leszek Koltunski	*/
214	1942537e	Leszek Koltunski	@SuppressWarnings("unused")
215	ed13a5de	Leszek Koltunski	public DistortedFramebuffer(int width, int height)
216	f6fb3c6d	Leszek Koltunski	{
217	9ed80185	Leszek Koltunski	super(width,height,NOT_CREATED_YET, 1, NO_DEPTH_NO_STENCIL,NOT_CREATED_YET,TYPE_USER);
218	f6fb3c6d	Leszek Koltunski	}
219
220	b448e6b9	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
221	dedacd82	Leszek Koltunski	/**
222	c5369f1b	leszek	* Bind the underlying rectangle of pixels as a OpenGL Texture.
223	af4cc5db	Leszek Koltunski	*
224	a436ccc5	leszek	* @return <code>true</code> if successful.
225	dedacd82	Leszek Koltunski	*/
226	c5369f1b	leszek	public boolean setAsInput()
227	b448e6b9	Leszek Koltunski	{
228	c5369f1b	leszek	if( mColorH[0]>0 )
229			{
230	f2367b75	Leszek Koltunski	GLES30.glActiveTexture(GLES30.GL_TEXTURE0);
231	c5369f1b	leszek	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[0]);
232			return true;
233			}
234
235			return false;
236			}
237	2e49718d	Leszek Koltunski
238	89de975c	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
239			/**
240			* Enable.disable DEPTH and STENCIL buffers.
241			*
242	23eecbd9	Leszek Koltunski	* @param depthStencil Valid values: NO_DEPTH_NO_STENCIL, DEPTH_NO_STENCIL, BOTH_DEPTH_STENCIL.
243	89de975c	leszek	*/
244			public void enableDepthStencil(int depthStencil)
245			{
246	65e83759	Leszek Koltunski	if( depthStencil != mDepthStencil )
247	89de975c	leszek	{
248			mDepthStencil = depthStencil;
249
250	65e83759	Leszek Koltunski	if( depthStencil!= NO_DEPTH_NO_STENCIL && mDepthStencilCreated==DONT_CREATE )
251	89de975c	leszek	{
252	65e83759	Leszek Koltunski	mDepthStencilCreated = NOT_CREATED_YET;
253			markForCreation();
254	89de975c	leszek	}
255	65e83759	Leszek Koltunski	if( depthStencil== NO_DEPTH_NO_STENCIL && mDepthStencilCreated!=DONT_CREATE )
256			{
257			mDepthStencilCreated = DONT_CREATE;
258			markForCreation();
259			}
260	89de975c	leszek	}
261			}
262
263	d1e740c5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
264			/**
265	09d4f4b1	Leszek Koltunski	* Return the ID of the Texture (COLOR attachment 0) that's backing this FBO.
266			* <p>
267			* Catch: this will only work if the library has had time to actually create the texture. Remember
268			* that the texture gets created only on first render, thus creating a Texture object and immediately
269			* calling this method will return an invalid (negative) result.
270			*
271	ab12f06b	Leszek Koltunski	* @return If there was not a single render between creation of the Object and calling this method on
272			* it, return a negative value. Otherwise, return ID of COLOR attachment 0.
273	d1e740c5	Leszek Koltunski	*/
274	09d4f4b1	Leszek Koltunski	public int getTextureID()
275	d1e740c5	Leszek Koltunski	{
276	133cbb2b	Leszek Koltunski	return mColorH[0];
277	8c327653	Leszek Koltunski	}
278	f6fb3c6d	Leszek Koltunski	}

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library / src / main / java / org / distorted / library / DistortedFramebuffer.java @ a31dbc5c