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

library / src / main / java / org / distorted / library / main / DistortedTexture.java @ b7074bc6

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			GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[0]);
69			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MIN_FILTER, GLES30.GL_LINEAR );
70			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_MAG_FILTER, GLES30.GL_LINEAR );
71			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_S, GLES30.GL_CLAMP_TO_EDGE );
72			GLES30.glTexParameteri ( GLES30.GL_TEXTURE_2D, GLES30.GL_TEXTURE_WRAP_T, GLES30.GL_CLAMP_TO_EDGE );
73			GLUtils.texImage2D(GLES30.GL_TEXTURE_2D, 0, flipBitmap(mBmp), 0);
74	05403bba	Leszek Koltunski	}
75			else
76			{
77	b7074bc6	Leszek Koltunski	GLES30.glBindTexture(GLES30.GL_TEXTURE_2D, mColorH[0]);
78			GLUtils.texSubImage2D(GLES30.GL_TEXTURE_2D, 0,0,0,flipBitmap(mBmp));
79	05403bba	Leszek Koltunski	}
80	4e2382f3	Leszek Koltunski
81	e7a20702	Leszek Koltunski	mBmp = null;
82	4e2382f3	Leszek Koltunski	}
83			}
84
85			///////////////////////////////////////////////////////////////////////////////////////////////////
86	1942537e	Leszek Koltunski	// must be called from a thread holding OpenGL Context
87	4e2382f3	Leszek Koltunski
88	227ac49a	Leszek Koltunski	void delete()
89	4e2382f3	Leszek Koltunski	{
90	05ecc6fe	Leszek Koltunski	if( mColorH[0]>0 )
91	1942537e	Leszek Koltunski	{
92	b7074bc6	Leszek Koltunski	GLES30.glDeleteTextures(1, mColorH, 0);
93	c7da4e65	leszek	mColorH[0] = 0;
94			mColorCreated = NOT_CREATED_YET;
95	1942537e	Leszek Koltunski	}
96	4e2382f3	Leszek Koltunski	}
97
98	4ebbb17a	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
99			// called from onDestroy(); mark OpenGL assets as 'not created'
100
101	f8377ef8	leszek	void recreate()
102	4ebbb17a	Leszek Koltunski	{
103	05ecc6fe	Leszek Koltunski	if( mColorCreated!=DONT_CREATE )
104			{
105			mColorCreated = NOT_CREATED_YET;
106			mColorH[0] = 0;
107			}
108	4ebbb17a	Leszek Koltunski	}
109	c5369f1b	leszek
110	09ab7524	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
111			// create SYSTEM or TREE textures (those are just like normal Textures, just hold information
112			// that they were autocreated only for the Library's internal purposes (SYSTEM) or for using
113			// inside a Tree of DistortedNodes (TREE)
114			// SYSTEM surfaces do not get removed in onDestroy().
115
116	c90aca24	Leszek Koltunski	public DistortedTexture(int type)
117	09ab7524	Leszek Koltunski	{
118	d58b50e7	Leszek Koltunski	super(NOT_CREATED_YET,1,1,type);
119	09ab7524	Leszek Koltunski	mBmp= null;
120			}
121
122	4e2382f3	Leszek Koltunski	///////////////////////////////////////////////////////////////////////////////////////////////////
123			// PUBLIC API
124			///////////////////////////////////////////////////////////////////////////////////////////////////
125			/**
126	c90aca24	Leszek Koltunski	* Create an empty texture.
127	4e2382f3	Leszek Koltunski	*/
128	c90aca24	Leszek Koltunski	public DistortedTexture()
129	4e2382f3	Leszek Koltunski	{
130	c90aca24	Leszek Koltunski	this(TYPE_USER);
131	4e2382f3	Leszek Koltunski	}
132
133	c5369f1b	leszek	///////////////////////////////////////////////////////////////////////////////////////////////////
134	4e2382f3	Leszek Koltunski	/**
135	1942537e	Leszek Koltunski	* Sets the underlying android.graphics.Bitmap object.
136	4e2382f3	Leszek Koltunski	* <p>
137			* You can only recycle() the passed Bitmap once the OpenGL context gets created (i.e. after call
138	432442f9	Leszek Koltunski	* to GLSurfaceView.onSurfaceCreated) because only after this point can the Library upload it to the GPU!
139	4e2382f3	Leszek Koltunski	*
140			* @param bmp The android.graphics.Bitmap object to apply effects to and display.
141			*/
142			public void setTexture(Bitmap bmp)
143			{
144	d58b50e7	Leszek Koltunski	mBmp= bmp;
145	f28fffc2	Leszek Koltunski	markForCreation();
146	1942537e	Leszek Koltunski	}
147	11bf077b	Leszek Koltunski
148			///////////////////////////////////////////////////////////////////////////////////////////////////
149			/**
150			* Paints the Texture with solid color.
151			*
152			* @param argb The color to paint the Texture with.
153			*/
154			public void setColor(int argb)
155			{
156			Paint paint = new Paint();
157			paint.setColor(argb);
158			paint.setStyle(Paint.Style.FILL);
159
160	d58b50e7	Leszek Koltunski	mBmp = Bitmap.createBitmap(1,1, Bitmap.Config.ARGB_8888);
161	11bf077b	Leszek Koltunski	Canvas canvas = new Canvas(mBmp);
162	d58b50e7	Leszek Koltunski	canvas.drawRect(0,0,1,1,paint);
163	11bf077b	Leszek Koltunski
164			markForCreation();
165			}
166	4e2382f3	Leszek Koltunski	}

Project

General

Profile

Distorted Android

library / src / main / java / org / distorted / library / main / DistortedTexture.java @ b7074bc6