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

library / src / main / java / org / distorted / library / DistortedFramebuffer.java @ 86e99907

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	86e99907	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
35
36			void prepareDebug(long time) {}
37			void renderDebug(long time) {}
38
39	f6fb3c6d	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
40	6537ba91	Leszek Koltunski	// Must be called from a thread holding OpenGL Context
41	f6fb3c6d	Leszek Koltunski
42	f8377ef8	leszek	void create()
43	f6fb3c6d	Leszek Koltunski	{
44	c7da4e65	leszek	if( mColorCreated==NOT_CREATED_YET )
45	7cf783cb	Leszek Koltunski	{
46	9ed80185	Leszek Koltunski	GLES30.glGenTextures( mNumColors, mColorH, 0);
47	133cbb2b	Leszek Koltunski	GLES30.glGenFramebuffers(1, mFBOH, 0);
48			GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
49	9ed80185	Leszek Koltunski
50			for(int i=0; i<mNumColors; i++)
51			{
52			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[i]);
53			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_REPEAT);
54			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_REPEAT);
55			GLES30.glTexParameterf(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_NEAREST);
56			GLES30.glTexParameterf(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_LINEAR);
57			GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_RGBA, mWidth, mHeight, 0, GLES30.GL_RGBA, GLES30.GL_UNSIGNED_BYTE, null);
58			}
59	0f011027	Leszek Koltunski	GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_COLOR_ATTACHMENT0, GLES30.GL_TEXTURE_2D, mColorH[0], 0);
60	9ed80185	Leszek Koltunski	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);
61	89de975c	leszek	GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);
62	dedacd82	Leszek Koltunski
63	c7da4e65	leszek	mColorCreated = checkStatus("color");
64	7cf783cb	Leszek Koltunski	}
65	89de975c	leszek	if( mDepthStencilCreated==NOT_CREATED_YET ) // we need to create a new DEPTH or STENCIL attachment
66	8c327653	Leszek Koltunski	{
67	89de975c	leszek	GLES30.glGenTextures(1, mDepthStencilH, 0);
68			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mDepthStencilH[0]);
69	194ab46f	Leszek Koltunski	GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_REPEAT);
70			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_REPEAT);
71			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_NEAREST);
72			GLES30.glTexParameteri(GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_NEAREST);
73	8c327653	Leszek Koltunski
74	89de975c	leszek	if( mDepthStencil==DEPTH_NO_STENCIL )
75	65e83759	Leszek Koltunski	{
76			GLES30.glTexImage2D(GLES30.GL_TEXTURE_2D, 0, GLES30.GL_DEPTH_COMPONENT, mWidth, mHeight, 0, GLES30.GL_DEPTH_COMPONENT, GLES30.GL_UNSIGNED_INT, null);
77			}
78	89de975c	leszek	else if( mDepthStencil==BOTH_DEPTH_STENCIL )
79	65e83759	Leszek Koltunski	{
80			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);
81			}
82	89de975c	leszek
83			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);
84	133cbb2b	Leszek Koltunski	GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
85	8c327653	Leszek Koltunski
86	89de975c	leszek	if( mDepthStencil==DEPTH_NO_STENCIL )
87	65e83759	Leszek Koltunski	{
88	89de975c	leszek	GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_ATTACHMENT, GLES30.GL_TEXTURE_2D, mDepthStencilH[0], 0);
89	65e83759	Leszek Koltunski	}
90	89de975c	leszek	else if( mDepthStencil==BOTH_DEPTH_STENCIL )
91	65e83759	Leszek Koltunski	{
92	89de975c	leszek	GLES30.glFramebufferTexture2D(GLES30.GL_FRAMEBUFFER, GLES30.GL_DEPTH_STENCIL_ATTACHMENT, GLES30.GL_TEXTURE_2D, mDepthStencilH[0], 0);
93	65e83759	Leszek Koltunski	}
94	89de975c	leszek
95			GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, 0);
96
97			mDepthStencilCreated = checkStatus("depth");
98	8c327653	Leszek Koltunski	}
99	89de975c	leszek	if( mDepthStencilCreated==DONT_CREATE && mDepthStencilH[0]>0 ) // we need to detach and recreate the DEPTH attachment.
100	8c327653	Leszek Koltunski	{
101	89de975c	leszek	GLES30.glDeleteTextures(1, mDepthStencilH, 0);
102			mDepthStencilH[0]=0;
103	8c327653	Leszek Koltunski	}
104	8337fa41	Leszek Koltunski	}
105
106			///////////////////////////////////////////////////////////////////////////////////////////////////
107
108	c7da4e65	leszek	private int checkStatus(String message)
109	8337fa41	Leszek Koltunski	{
110	194ab46f	Leszek Koltunski	int status = GLES30.glCheckFramebufferStatus(GLES30.GL_FRAMEBUFFER);
111	8337fa41	Leszek Koltunski
112	194ab46f	Leszek Koltunski	if(status != GLES30.GL_FRAMEBUFFER_COMPLETE)
113	8337fa41	Leszek Koltunski	{
114			android.util.Log.e("DistortedFramebuffer", "FRAMEBUFFER INCOMPLETE, "+message+" error="+status);
115
116	133cbb2b	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
117	89de975c	leszek	GLES30.glDeleteTextures(1, mDepthStencilH, 0);
118	133cbb2b	Leszek Koltunski	GLES30.glDeleteFramebuffers(1, mFBOH, 0);
119	c7da4e65	leszek	mFBOH[0]= 0;
120	8337fa41	Leszek Koltunski
121	c7da4e65	leszek	return FAILED_TO_CREATE;
122	8337fa41	Leszek Koltunski	}
123	8c327653	Leszek Koltunski
124	c7da4e65	leszek	return CREATED;
125	f6fb3c6d	Leszek Koltunski	}
126
127			///////////////////////////////////////////////////////////////////////////////////////////////////
128	6537ba91	Leszek Koltunski	// Must be called from a thread holding OpenGL Context
129	f6fb3c6d	Leszek Koltunski
130	227ac49a	Leszek Koltunski	void delete()
131	f6fb3c6d	Leszek Koltunski	{
132	c7da4e65	leszek	if( mColorH[0]>0 )
133	e6cf7d50	Leszek Koltunski	{
134	133cbb2b	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
135	c7da4e65	leszek	mColorH[0] = 0;
136			mColorCreated = NOT_CREATED_YET;
137	5b959cc5	Leszek Koltunski	}
138	bd3da5b2	Leszek Koltunski
139	5b959cc5	Leszek Koltunski	if( mDepthStencilH[0]>0 )
140			{
141			GLES30.glDeleteTextures(1, mDepthStencilH, 0);
142			mDepthStencilH[0]=0;
143			mDepthStencilCreated = NOT_CREATED_YET;
144	e6cf7d50	Leszek Koltunski	}
145	5b959cc5	Leszek Koltunski
146			GLES30.glDeleteFramebuffers(1, mFBOH, 0);
147			mFBOH[0] = 0;
148	bd3da5b2	Leszek Koltunski	}
149
150	4ebbb17a	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
151			// called from onDestroy(); mark OpenGL assets as 'not created'
152
153	f8377ef8	leszek	void recreate()
154	4ebbb17a	Leszek Koltunski	{
155	05ecc6fe	Leszek Koltunski	if( mColorCreated!=DONT_CREATE )
156			{
157			mColorCreated = NOT_CREATED_YET;
158			mColorH[0] = 0;
159			}
160	89de975c	leszek	if( mDepthStencilCreated!=DONT_CREATE )
161	05ecc6fe	Leszek Koltunski	{
162	89de975c	leszek	mDepthStencilCreated = NOT_CREATED_YET;
163			mDepthStencilH[0] = 0;
164	05ecc6fe	Leszek Koltunski	}
165	4ebbb17a	Leszek Koltunski	}
166
167	af27df87	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
168	09ab7524	Leszek Koltunski	// create SYSTEM or TREE framebuffers (those are just like normal FBOs, just hold information
169			// that they were autocreated only for the Library's internal purposes (SYSTEM) or for using
170			// inside a Tree of DistortedNodes (TREE)
171			// SYSTEM surfaces do not get removed in onDestroy().
172	af27df87	leszek
173	9ed80185	Leszek Koltunski	DistortedFramebuffer(int numcolors, int depthStencil, int type, int width, int height)
174	af27df87	leszek	{
175	9ed80185	Leszek Koltunski	super(width,height,NOT_CREATED_YET,numcolors,depthStencil,NOT_CREATED_YET, type);
176	af27df87	leszek	}
177
178	f6fb3c6d	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
179			// PUBLIC API
180	dedacd82	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
181	cdd5e827	Leszek Koltunski	/**
182	9ed80185	Leszek Koltunski	* Create new offscreen Framebuffer with configurable number of COLOR, DEPTH and STENCIL attachments.
183	cdd5e827	Leszek Koltunski	*
184	9ed80185	Leszek Koltunski	* @param width Width of all the COLOR attachments.
185			* @param height Height of all the COLOR attachments.
186			* @param numcolors How many COLOR attachments to create?
187	89de975c	leszek	* @param depthStencil Add DEPTH or STENCIL attachment?
188	23eecbd9	Leszek Koltunski	* Valid values: NO_DEPTH_NO_STENCIL, DEPTH_NO_STENCIL, BOTH_DEPTH_STENCIL.
189	cdd5e827	Leszek Koltunski	*/
190			@SuppressWarnings("unused")
191	9ed80185	Leszek Koltunski	public DistortedFramebuffer(int width, int height, int numcolors, int depthStencil)
192	cdd5e827	Leszek Koltunski	{
193	9ed80185	Leszek Koltunski	super(width,height,NOT_CREATED_YET,numcolors,depthStencil,NOT_CREATED_YET,TYPE_USER);
194	cdd5e827	Leszek Koltunski	}
195
196	133cbb2b	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
197
198	dedacd82	Leszek Koltunski	/**
199	9ed80185	Leszek Koltunski	* Create new offscreen Framebuffer with COLOR0 attachment only.
200	dedacd82	Leszek Koltunski	*
201	9ed80185	Leszek Koltunski	* @param width Width of the COLOR0 attachment.
202			* @param height Height of the COLOR0 attachment.
203	dedacd82	Leszek Koltunski	*/
204	1942537e	Leszek Koltunski	@SuppressWarnings("unused")
205	ed13a5de	Leszek Koltunski	public DistortedFramebuffer(int width, int height)
206	f6fb3c6d	Leszek Koltunski	{
207	9ed80185	Leszek Koltunski	super(width,height,NOT_CREATED_YET, 1, NO_DEPTH_NO_STENCIL,NOT_CREATED_YET,TYPE_USER);
208	f6fb3c6d	Leszek Koltunski	}
209
210	b448e6b9	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
211	dedacd82	Leszek Koltunski	/**
212	c5369f1b	leszek	* Bind the underlying rectangle of pixels as a OpenGL Texture.
213	af4cc5db	Leszek Koltunski	*
214	a436ccc5	leszek	* @return <code>true</code> if successful.
215	dedacd82	Leszek Koltunski	*/
216	c5369f1b	leszek	public boolean setAsInput()
217	b448e6b9	Leszek Koltunski	{
218	c5369f1b	leszek	if( mColorH[0]>0 )
219			{
220	f2367b75	Leszek Koltunski	GLES30.glActiveTexture(GLES30.GL_TEXTURE0);
221	c5369f1b	leszek	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[0]);
222			return true;
223			}
224
225			return false;
226			}
227	2e49718d	Leszek Koltunski
228	89de975c	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
229			/**
230			* Enable.disable DEPTH and STENCIL buffers.
231			*
232	23eecbd9	Leszek Koltunski	* @param depthStencil Valid values: NO_DEPTH_NO_STENCIL, DEPTH_NO_STENCIL, BOTH_DEPTH_STENCIL.
233	89de975c	leszek	*/
234			public void enableDepthStencil(int depthStencil)
235			{
236	65e83759	Leszek Koltunski	if( depthStencil != mDepthStencil )
237	89de975c	leszek	{
238			mDepthStencil = depthStencil;
239
240	65e83759	Leszek Koltunski	if( depthStencil!= NO_DEPTH_NO_STENCIL && mDepthStencilCreated==DONT_CREATE )
241	89de975c	leszek	{
242	65e83759	Leszek Koltunski	mDepthStencilCreated = NOT_CREATED_YET;
243			markForCreation();
244	89de975c	leszek	}
245	65e83759	Leszek Koltunski	if( depthStencil== NO_DEPTH_NO_STENCIL && mDepthStencilCreated!=DONT_CREATE )
246			{
247			mDepthStencilCreated = DONT_CREATE;
248			markForCreation();
249			}
250	89de975c	leszek	}
251			}
252
253	d1e740c5	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
254			/**
255	09d4f4b1	Leszek Koltunski	* Return the ID of the Texture (COLOR attachment 0) that's backing this FBO.
256			* <p>
257			* Catch: this will only work if the library has had time to actually create the texture. Remember
258			* that the texture gets created only on first render, thus creating a Texture object and immediately
259			* calling this method will return an invalid (negative) result.
260			*
261	ab12f06b	Leszek Koltunski	* @return If there was not a single render between creation of the Object and calling this method on
262			* it, return a negative value. Otherwise, return ID of COLOR attachment 0.
263	d1e740c5	Leszek Koltunski	*/
264	09d4f4b1	Leszek Koltunski	public int getTextureID()
265	d1e740c5	Leszek Koltunski	{
266	133cbb2b	Leszek Koltunski	return mColorH[0];
267	8c327653	Leszek Koltunski	}
268	f6fb3c6d	Leszek Koltunski	}

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library / src / main / java / org / distorted / library / DistortedFramebuffer.java @ 86e99907