1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_INC_OPENGL_TEXTURE_H
#define INCLUDED_VCL_INC_OPENGL_TEXTURE_H
#include <GL/glew.h>
#include <vcl/dllapi.h>
#include <vcl/salgtype.hxx>
#include <rtl/ustring.hxx>
#include <tools/gen.hxx>
#include <memory>
#include <vector>
class ImplOpenGLTexture
{
public:
int mnRefCount;
GLuint mnTexture;
int mnWidth;
int mnHeight;
GLenum mnFilter;
std::unique_ptr<std::vector<int>> mpSlotReferences;
int mnFreeSlots;
ImplOpenGLTexture( int nWidth, int nHeight, bool bAllocate );
ImplOpenGLTexture( int nWidth, int nHeight, int nFormat, int nType, void const * pData );
ImplOpenGLTexture( int nX, int nY, int nWidth, int nHeight );
~ImplOpenGLTexture();
bool InsertBuffer(int nX, int nY, int nWidth, int nHeight, int nFormat, int nType, sal_uInt8* pData);
void IncreaseRefCount(int nSlotNumber)
{
mnRefCount++;
if (mpSlotReferences && nSlotNumber >= 0)
{
if (mpSlotReferences->at(nSlotNumber) == 0)
mnFreeSlots--;
mpSlotReferences->at(nSlotNumber)++;
}
}
void DecreaseRefCount(int nSlotNumber)
{
mnRefCount--;
if (mpSlotReferences && nSlotNumber >= 0)
{
mpSlotReferences->at(nSlotNumber)--;
if (mpSlotReferences->at(nSlotNumber) == 0)
mnFreeSlots++;
}
}
bool ExistRefs()
{
return mnRefCount > 0;
}
bool InitializeSlots(int nSlotSize);
int FindFreeSlot();
};
class VCL_DLLPUBLIC OpenGLTexture
{
private:
// if the rect size doesn't match the mpImpl one, this instance
// is a sub-area from the real OpenGL texture
Rectangle maRect;
ImplOpenGLTexture* mpImpl;
int mnSlotNumber;
public:
OpenGLTexture();
OpenGLTexture(ImplOpenGLTexture* pImpl, Rectangle aRectangle, int nSlotNumber = 0);
OpenGLTexture( int nWidth, int nHeight, bool bAllocate = true );
OpenGLTexture( int nWidth, int nHeight, int nFormat, int nType, void const * pData );
OpenGLTexture( int nX, int nY, int nWidth, int nHeight );
OpenGLTexture( const OpenGLTexture& rTexture );
OpenGLTexture( const OpenGLTexture& rTexture, int nX, int nY, int nWidth, int nHeight );
virtual ~OpenGLTexture();
bool IsUnique() const;
GLuint Id() const;
int GetWidth() const;
int GetHeight() const;
void GetCoord( GLfloat* pCoord, const SalTwoRect& rPosAry, bool bInverted=false ) const;
void GetWholeCoord( GLfloat* pCoord ) const;
void Bind();
void Unbind();
void Read( GLenum nFormat, GLenum nType, sal_uInt8* pData );
void SaveToFile(const OUString& rFileName);
GLenum GetFilter() const;
void SetFilter( GLenum nFilter );
operator bool() const;
OpenGLTexture& operator=( const OpenGLTexture& rTexture );
bool operator==( const OpenGLTexture& rTexture ) const;
bool operator!=( const OpenGLTexture& rTexture ) const;
};
#endif // INCLUDED_VCL_INC_OPENGL_TEXTURE_H
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|