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

library / src / main / java / org / distorted / library / main / DistortedTexture.java @ eff6e3d3

1	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
2			// Copyright 2016 Leszek Koltunski //
3			// //
4	46b572b5	Leszek Koltunski	// This file is part of Distorted. //
5	4e2382f3	Leszek Koltunski	// //
6	46b572b5	Leszek Koltunski	// Distorted is free software: you can redistribute it and/or modify //
7	4e2382f3	Leszek Koltunski	// 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	46b572b5	Leszek Koltunski	// Distorted 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			// 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	46b572b5	Leszek Koltunski	// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
18	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
19
20	fe82a979	Leszek Koltunski	package org.distorted.library.main;
21	4e2382f3	Leszek Koltunski
22			import android.graphics.Bitmap;
23	11bf077b	Leszek Koltunski	import android.graphics.Canvas;
24	4e2382f3	Leszek Koltunski	import android.graphics.Matrix;
25	11bf077b	Leszek Koltunski	import android.graphics.Paint;
26	b7074bc6	Leszek Koltunski	import android.opengl.GLES30;
27	4e2382f3	Leszek Koltunski	import android.opengl.GLUtils;
28
29			///////////////////////////////////////////////////////////////////////////////////////////////////
30	e0b6c593	Leszek Koltunski	/**
31			* Class which represents a OpenGL Texture object.
32			* <p>
33			* Create a Texture of arbitrary size and feed some pixels to it via the setTexture() method.
34			*/
35	7602a827	Leszek Koltunski	public class DistortedTexture extends InternalSurface
36	4e2382f3	Leszek Koltunski	{
37	9d845904	Leszek Koltunski	private Bitmap mBmp;
38	4e2382f3	Leszek Koltunski
39			///////////////////////////////////////////////////////////////////////////////////////////////////
40			// We have to flip vertically every single Bitmap that we get fed with.
41			//
42			// Reason: textures read from files are the only objects in OpenGL which have their origins at the
43			// upper-left corner. Everywhere else the origin is in the lower-left corner. Thus we have to flip.
44			// The alternative solution, namely inverting the y-coordinate of the TexCoord does not really work-
45			// i.e. it works only in case of rendering directly to the screen, but if we render to an FBO and
46	a09ada4c	Leszek Koltunski	// then take the FBO and render to screen, (DistortedNode does so!) things get inverted as textures
47	4e2382f3	Leszek Koltunski	// created from FBO have their origins in the lower-left... Mindfuck!
48
49			private static Bitmap flipBitmap(Bitmap src)
50			{
51			Matrix matrix = new Matrix();
52			matrix.preScale(1.0f,-1.0f);
53
54			return Bitmap.createBitmap(src,0,0,src.getWidth(),src.getHeight(), matrix,true);
55			}
56
57			///////////////////////////////////////////////////////////////////////////////////////////////////
58	1942537e	Leszek Koltunski	// must be called from a thread holding OpenGL Context
59	4e2382f3	Leszek Koltunski
60	f8377ef8	leszek	void create()
61	4e2382f3	Leszek Koltunski	{
62	c7da4e65	leszek	if( mBmp!=null )
63	4e2382f3	Leszek Koltunski	{
64	c7da4e65	leszek	if( mColorCreated==NOT_CREATED_YET )
65	05403bba	Leszek Koltunski	{
66	c7da4e65	leszek	mColorCreated = CREATED;
67	b7074bc6	Leszek Koltunski	GLES30.glGenTextures(1, mColorH, 0);
68	05403bba	Leszek Koltunski	}
69	4e2382f3	Leszek Koltunski
70	f0604575	Leszek Koltunski	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[0]);
71			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_LINEAR );
72			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_LINEAR );
73			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_CLAMP_TO_EDGE );
74			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_CLAMP_TO_EDGE );
75			GLUtils.texImage2D(GLES30.GL_TEXTURE_2D, 0, flipBitmap(mBmp), 0);
76			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, 0);
77
78	e7a20702	Leszek Koltunski	mBmp = null;
79	4e2382f3	Leszek Koltunski	}
80			}
81
82			///////////////////////////////////////////////////////////////////////////////////////////////////
83	1942537e	Leszek Koltunski	// must be called from a thread holding OpenGL Context
84	4e2382f3	Leszek Koltunski
85	227ac49a	Leszek Koltunski	void delete()
86	4e2382f3	Leszek Koltunski	{
87	05ecc6fe	Leszek Koltunski	if( mColorH[0]>0 )
88	1942537e	Leszek Koltunski	{
89	b7074bc6	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
90	c7da4e65	leszek	mColorH[0] = 0;
91			mColorCreated = NOT_CREATED_YET;
92	1942537e	Leszek Koltunski	}
93	4e2382f3	Leszek Koltunski	}
94
95	4ebbb17a	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
96			// called from onDestroy(); mark OpenGL assets as 'not created'
97
98	f8377ef8	leszek	void recreate()
99	4ebbb17a	Leszek Koltunski	{
100	05ecc6fe	Leszek Koltunski	if( mColorCreated!=DONT_CREATE )
101			{
102			mColorCreated = NOT_CREATED_YET;
103			mColorH[0] = 0;
104			}
105	4ebbb17a	Leszek Koltunski	}
106	c5369f1b	leszek
107	09ab7524	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
108			// create SYSTEM or TREE textures (those are just like normal Textures, just hold information
109			// that they were autocreated only for the Library's internal purposes (SYSTEM) or for using
110			// inside a Tree of DistortedNodes (TREE)
111			// SYSTEM surfaces do not get removed in onDestroy().
112
113	c90aca24	Leszek Koltunski	public DistortedTexture(int type)
114	09ab7524	Leszek Koltunski	{
115	9ec374e8	Leszek Koltunski	super(NOT_CREATED_YET,1,1,type,InternalObject.STORAGE_PRIVATE);
116	09ab7524	Leszek Koltunski	mBmp= null;
117			}
118
119	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
120			// PUBLIC API
121			///////////////////////////////////////////////////////////////////////////////////////////////////
122			/**
123	c90aca24	Leszek Koltunski	* Create an empty texture.
124	4e2382f3	Leszek Koltunski	*/
125	c90aca24	Leszek Koltunski	public DistortedTexture()
126	4e2382f3	Leszek Koltunski	{
127	c90aca24	Leszek Koltunski	this(TYPE_USER);
128	4e2382f3	Leszek Koltunski	}
129
130	c5369f1b	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
131	4e2382f3	Leszek Koltunski	/**
132	1942537e	Leszek Koltunski	* Sets the underlying android.graphics.Bitmap object.
133	4e2382f3	Leszek Koltunski	* <p>
134			* You can only recycle() the passed Bitmap once the OpenGL context gets created (i.e. after call
135	432442f9	Leszek Koltunski	* to GLSurfaceView.onSurfaceCreated) because only after this point can the Library upload it to the GPU!
136	4e2382f3	Leszek Koltunski	*
137			* @param bmp The android.graphics.Bitmap object to apply effects to and display.
138	2bd3d0fb	Leszek Koltunski	* @return true if successful, false if texture too large.
139	4e2382f3	Leszek Koltunski	*/
140	2bd3d0fb	Leszek Koltunski	public boolean setTexture(Bitmap bmp)
141	4e2382f3	Leszek Koltunski	{
142	2bd3d0fb	Leszek Koltunski	int width = bmp.getWidth();
143			int height= bmp.getHeight();
144			int max = DistortedLibrary.getMaxTextureSize();
145
146			if( width>max \|\| height>max )
147			{
148			android.util.Log.e("texture","error, trying to upload too large texture of size "+width+" x "+height+". Max is "+max);
149			return false;
150			}
151			else
152			{
153			mBmp= bmp;
154			markForCreation();
155			return true;
156			}
157	1942537e	Leszek Koltunski	}
158	11bf077b	Leszek Koltunski
159			///////////////////////////////////////////////////////////////////////////////////////////////////
160			/**
161			* Paints the Texture with solid color.
162			*
163	4db11f0c	Leszek Koltunski	* @param argb The color to paint the Texture with. Example: 0xffff0000 - red.
164	11bf077b	Leszek Koltunski	*/
165	246d021c	Leszek Koltunski	public void setColorARGB(int argb)
166	11bf077b	Leszek Koltunski	{
167			Paint paint = new Paint();
168			paint.setColor(argb);
169			paint.setStyle(Paint.Style.FILL);
170
171	d58b50e7	Leszek Koltunski	mBmp = Bitmap.createBitmap(1,1, Bitmap.Config.ARGB_8888);
172	11bf077b	Leszek Koltunski	Canvas canvas = new Canvas(mBmp);
173	d58b50e7	Leszek Koltunski	canvas.drawRect(0,0,1,1,paint);
174	11bf077b	Leszek Koltunski
175			markForCreation();
176			}
177	4e2382f3	Leszek Koltunski	}

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library / src / main / java / org / distorted / library / main / DistortedTexture.java @ eff6e3d3