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

library / src / main / java / org / distorted / library / main / DistortedTexture.java @ 8c57d77b

1	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
2	2e569ff6	Leszek Koltunski	// Copyright 2016 Leszek Koltunski leszek@koltunski.pl //
3	4e2382f3	Leszek Koltunski	// //
4	46b572b5	Leszek Koltunski	// This file is part of Distorted. //
5	4e2382f3	Leszek Koltunski	// //
6	2e569ff6	Leszek Koltunski	// This library is free software; you can redistribute it and/or //
7			// modify it under the terms of the GNU Lesser General Public //
8			// License as published by the Free Software Foundation; either //
9			// version 2.1 of the License, or (at your option) any later version. //
10	4e2382f3	Leszek Koltunski	// //
11	2e569ff6	Leszek Koltunski	// This library is distributed in the hope that it will be useful, //
12	4e2382f3	Leszek Koltunski	// but WITHOUT ANY WARRANTY; without even the implied warranty of //
13	2e569ff6	Leszek Koltunski	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
14			// Lesser General Public License for more details. //
15	4e2382f3	Leszek Koltunski	// //
16	2e569ff6	Leszek Koltunski	// You should have received a copy of the GNU Lesser General Public //
17			// License along with this library; if not, write to the Free Software //
18			// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //
19	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
20
21	fe82a979	Leszek Koltunski	package org.distorted.library.main;
22	4e2382f3	Leszek Koltunski
23			import android.graphics.Bitmap;
24	11bf077b	Leszek Koltunski	import android.graphics.Canvas;
25	4e2382f3	Leszek Koltunski	import android.graphics.Matrix;
26	11bf077b	Leszek Koltunski	import android.graphics.Paint;
27	b7074bc6	Leszek Koltunski	import android.opengl.GLES30;
28	4e2382f3	Leszek Koltunski	import android.opengl.GLUtils;
29
30			///////////////////////////////////////////////////////////////////////////////////////////////////
31	e0b6c593	Leszek Koltunski	/**
32			* Class which represents a OpenGL Texture object.
33			* <p>
34			* Create a Texture of arbitrary size and feed some pixels to it via the setTexture() method.
35			*/
36	7602a827	Leszek Koltunski	public class DistortedTexture extends InternalSurface
37	4e2382f3	Leszek Koltunski	{
38	9d845904	Leszek Koltunski	private Bitmap mBmp;
39	f85f2943	Leszek Koltunski	private boolean mBitmapInverted;
40	4e2382f3	Leszek Koltunski
41			///////////////////////////////////////////////////////////////////////////////////////////////////
42	f85f2943	Leszek Koltunski	// We have to vertically flip all the bitmaps passed here via setTexture().
43	4e2382f3	Leszek Koltunski	//
44			// Reason: textures read from files are the only objects in OpenGL which have their origins at the
45			// upper-left corner. Everywhere else the origin is in the lower-left corner. Thus we have to flip.
46			// The alternative solution, namely inverting the y-coordinate of the TexCoord does not really work-
47			// i.e. it works only in case of rendering directly to the screen, but if we render to an FBO and
48	a09ada4c	Leszek Koltunski	// then take the FBO and render to screen, (DistortedNode does so!) things get inverted as textures
49	f85f2943	Leszek Koltunski	// created from FBO have their origins in the lower-left...
50	4e2382f3	Leszek Koltunski
51			private static Bitmap flipBitmap(Bitmap src)
52			{
53			Matrix matrix = new Matrix();
54			matrix.preScale(1.0f,-1.0f);
55
56			return Bitmap.createBitmap(src,0,0,src.getWidth(),src.getHeight(), matrix,true);
57			}
58
59			///////////////////////////////////////////////////////////////////////////////////////////////////
60	1942537e	Leszek Koltunski	// must be called from a thread holding OpenGL Context
61	4e2382f3	Leszek Koltunski
62	f8377ef8	leszek	void create()
63	4e2382f3	Leszek Koltunski	{
64	c7da4e65	leszek	if( mBmp!=null )
65	4e2382f3	Leszek Koltunski	{
66	c7da4e65	leszek	if( mColorCreated==NOT_CREATED_YET )
67	05403bba	Leszek Koltunski	{
68	c7da4e65	leszek	mColorCreated = CREATED;
69	b7074bc6	Leszek Koltunski	GLES30.glGenTextures(1, mColorH, 0);
70	05403bba	Leszek Koltunski	}
71	4e2382f3	Leszek Koltunski
72	f0604575	Leszek Koltunski	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[0]);
73			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_LINEAR );
74			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_LINEAR );
75			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_CLAMP_TO_EDGE );
76			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_CLAMP_TO_EDGE );
77	f85f2943	Leszek Koltunski	GLUtils.texImage2D(GLES30.GL_TEXTURE_2D, 0, mBitmapInverted ? mBmp : flipBitmap(mBmp), 0);
78	f0604575	Leszek Koltunski	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);
79
80	e7a20702	Leszek Koltunski	mBmp = null;
81	4e2382f3	Leszek Koltunski	}
82			}
83
84			///////////////////////////////////////////////////////////////////////////////////////////////////
85	1942537e	Leszek Koltunski	// must be called from a thread holding OpenGL Context
86	4e2382f3	Leszek Koltunski
87	227ac49a	Leszek Koltunski	void delete()
88	4e2382f3	Leszek Koltunski	{
89	05ecc6fe	Leszek Koltunski	if( mColorH[0]>0 )
90	1942537e	Leszek Koltunski	{
91	b7074bc6	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
92	c7da4e65	leszek	mColorH[0] = 0;
93			mColorCreated = NOT_CREATED_YET;
94	1942537e	Leszek Koltunski	}
95	4e2382f3	Leszek Koltunski	}
96
97	4ebbb17a	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
98			// called from onDestroy(); mark OpenGL assets as 'not created'
99
100	f8377ef8	leszek	void recreate()
101	4ebbb17a	Leszek Koltunski	{
102	05ecc6fe	Leszek Koltunski	if( mColorCreated!=DONT_CREATE )
103			{
104			mColorCreated = NOT_CREATED_YET;
105			mColorH[0] = 0;
106			}
107	4ebbb17a	Leszek Koltunski	}
108	c5369f1b	leszek
109	09ab7524	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
110			// create SYSTEM or TREE textures (those are just like normal Textures, just hold information
111			// that they were autocreated only for the Library's internal purposes (SYSTEM) or for using
112			// inside a Tree of DistortedNodes (TREE)
113			// SYSTEM surfaces do not get removed in onDestroy().
114
115	c90aca24	Leszek Koltunski	public DistortedTexture(int type)
116	09ab7524	Leszek Koltunski	{
117	9ec374e8	Leszek Koltunski	super(NOT_CREATED_YET,1,1,type,InternalObject.STORAGE_PRIVATE);
118	09ab7524	Leszek Koltunski	mBmp= null;
119			}
120
121	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
122			// PUBLIC API
123			///////////////////////////////////////////////////////////////////////////////////////////////////
124			/**
125	c90aca24	Leszek Koltunski	* Create an empty texture.
126	4e2382f3	Leszek Koltunski	*/
127	c90aca24	Leszek Koltunski	public DistortedTexture()
128	4e2382f3	Leszek Koltunski	{
129	c90aca24	Leszek Koltunski	this(TYPE_USER);
130	4e2382f3	Leszek Koltunski	}
131
132	c5369f1b	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
133	4e2382f3	Leszek Koltunski	/**
134	1942537e	Leszek Koltunski	* Sets the underlying android.graphics.Bitmap object.
135	4e2382f3	Leszek Koltunski	* <p>
136			* You can only recycle() the passed Bitmap once the OpenGL context gets created (i.e. after call
137	432442f9	Leszek Koltunski	* to GLSurfaceView.onSurfaceCreated) because only after this point can the Library upload it to the GPU!
138	4e2382f3	Leszek Koltunski	*
139			* @param bmp The android.graphics.Bitmap object to apply effects to and display.
140	2bd3d0fb	Leszek Koltunski	* @return true if successful, false if texture too large.
141	4e2382f3	Leszek Koltunski	*/
142	2bd3d0fb	Leszek Koltunski	public boolean setTexture(Bitmap bmp)
143	4e2382f3	Leszek Koltunski	{
144	2bd3d0fb	Leszek Koltunski	int width = bmp.getWidth();
145			int height= bmp.getHeight();
146			int max = DistortedLibrary.getMaxTextureSize();
147
148			if( width>max \|\| height>max )
149			{
150	8c57d77b	Leszek Koltunski	DistortedLibrary.logMessage("DistortedTexture: error, trying to upload too large texture of size "+width+" x "+height+". Max is "+max);
151	2bd3d0fb	Leszek Koltunski	return false;
152			}
153			else
154			{
155	f85f2943	Leszek Koltunski	mBitmapInverted = false;
156			mBmp= bmp;
157			markForCreation();
158			return true;
159			}
160			}
161
162			///////////////////////////////////////////////////////////////////////////////////////////////////
163			/**
164			* Sets the underlying android.graphics.Bitmap object - this version assumes the object is already
165			* flipped upside down.
166			* <p>
167			* You can only recycle() the passed Bitmap once the OpenGL context gets created (i.e. after call
168			* to GLSurfaceView.onSurfaceCreated) because only after this point can the Library upload it to the GPU!
169			*
170			* @param bmp The (vertically flipped!) android.graphics.Bitmap object to apply effects to and display.
171			* @return true if successful, false if texture too large.
172			*/
173			public boolean setTextureAlreadyInverted(Bitmap bmp)
174			{
175			int width = bmp.getWidth();
176			int height= bmp.getHeight();
177			int max = DistortedLibrary.getMaxTextureSize();
178
179			if( width>max \|\| height>max )
180			{
181	8c57d77b	Leszek Koltunski	DistortedLibrary.logMessage("DistortedTexture: error, trying to upload too large texture of size "+width+" x "+height+". Max is "+max);
182	f85f2943	Leszek Koltunski	return false;
183			}
184			else
185			{
186			mBitmapInverted = true;
187	2bd3d0fb	Leszek Koltunski	mBmp= bmp;
188			markForCreation();
189			return true;
190			}
191	1942537e	Leszek Koltunski	}
192	11bf077b	Leszek Koltunski
193			///////////////////////////////////////////////////////////////////////////////////////////////////
194			/**
195			* Paints the Texture with solid color.
196			*
197	4db11f0c	Leszek Koltunski	* @param argb The color to paint the Texture with. Example: 0xffff0000 - red.
198	11bf077b	Leszek Koltunski	*/
199	246d021c	Leszek Koltunski	public void setColorARGB(int argb)
200	11bf077b	Leszek Koltunski	{
201			Paint paint = new Paint();
202			paint.setColor(argb);
203			paint.setStyle(Paint.Style.FILL);
204
205	d58b50e7	Leszek Koltunski	mBmp = Bitmap.createBitmap(1,1, Bitmap.Config.ARGB_8888);
206	11bf077b	Leszek Koltunski	Canvas canvas = new Canvas(mBmp);
207	d58b50e7	Leszek Koltunski	canvas.drawRect(0,0,1,1,paint);
208	11bf077b	Leszek Koltunski
209			markForCreation();
210			}
211	4e2382f3	Leszek Koltunski	}

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library / src / main / java / org / distorted / library / main / DistortedTexture.java @ 8c57d77b