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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* The ManaVerse Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2019 The ManaPlus Developers
*
* This file is part of The ManaVerse Client.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef RESOURCES_OPENGLIMAGEHELPER_H
#define RESOURCES_OPENGLIMAGEHELPER_H
#include "localconsts.h"
#ifdef USE_OPENGL
#ifndef GL_TEXTURE_RECTANGLE_ARB
#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
#define GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB 0x84F8
#endif // GL_TEXTURE_RECTANGLE_ARB
#include "resources/imagehelper.h"
#ifdef ANDROID
#include <GLES/gl.h>
#define GL_RGBA8 GL_RGBA8_OES
#else // ANDROID
#ifndef USE_SDL2
#define GL_GLEXT_PROTOTYPES 1
#endif // USE_SDL2
#ifdef HAVE_GLEXT
#define NO_SDL_GLEXT
#endif // HAVE_GLEXT
PRAGMA48(GCC diagnostic push)
PRAGMA48(GCC diagnostic ignored "-Wshadow")
// ignore -Wredundant-decls for SDL 1.2
PRAGMA45(GCC diagnostic push)
PRAGMA45(GCC diagnostic ignored "-Wredundant-decls")
#include <SDL_opengl.h>
PRAGMA45(GCC diagnostic pop)
PRAGMA48(GCC diagnostic pop)
#ifdef HAVE_GLEXT
PRAGMA45(GCC diagnostic push)
PRAGMA45(GCC diagnostic ignored "-Wredundant-decls")
#include <GL/glext.h>
PRAGMA45(GCC diagnostic pop)
#endif // HAVE_GLEXT
#endif // ANDROID
class Dye;
class Image;
/**
* Defines a class for loading and storing images.
*/
class OpenGLImageHelper final : public ImageHelper
{
friend class CompoundSprite;
friend class Graphics;
friend class Image;
public:
OpenGLImageHelper() :
mFreeTextureIndex(0U),
mTextures()
{
}
A_DELETE_COPY(OpenGLImageHelper)
~OpenGLImageHelper() override final;
/**
* Loads an image from an SDL_RWops structure and recolors it.
*
* @param rw The SDL_RWops to load the image from.
* @param dye The dye used to recolor the image.
*
* @return <code>NULL</code> if an error occurred, a valid pointer
* otherwise.
*/
Image *load(SDL_RWops *const rw,
Dye const &dye) override final A_WARN_UNUSED;
/**
* Loads an image from an SDL surface.
*/
Image *loadSurface(SDL_Surface *const tmpImage) override final
A_WARN_UNUSED;
Image *createTextSurface(SDL_Surface *const tmpImage,
const int width, const int height,
const float alpha)
override final A_WARN_UNUSED;
// OpenGL only public functions
static int getTextureType() noexcept2 A_WARN_UNUSED
{ return mTextureType; }
static int getInternalTextureType() noexcept2 A_WARN_UNUSED
{ return mInternalTextureType; }
constexpr2 static void setInternalTextureType(const int n) noexcept2
{ mInternalTextureType = n; }
constexpr2 static void setBlur(const bool n) noexcept2
{ mBlur = n; }
static int mTextureType;
static int mInternalTextureType;
static int getTextureSize() noexcept2 A_WARN_UNUSED
{ return mTextureSize; }
static void initTextureSampler(const GLint id);
constexpr2 static void setUseTextureSampler(const bool b) noexcept2
{ mUseTextureSampler = b; }
static void invalidate(const GLuint textureId);
static void bindTexture(const GLuint texture);
SDL_Surface *create32BitSurface(int width,
int height) const override final;
void postInit() override final;
void copySurfaceToImage(const Image *const image,
const int x, const int y,
SDL_Surface *surface) const override final;
protected:
/**
* Returns the first power of two equal or bigger than the input.
*/
static int powerOfTwo(const int input) A_WARN_UNUSED;
static SDL_Surface *convertSurfaceNormalize(SDL_Surface *tmpImage,
int width, int height);
static SDL_Surface *convertSurface(SDL_Surface *tmpImage,
int width, int height);
Image *glLoad(SDL_Surface *tmpImage,
int width = 0, int height = 0) A_WARN_UNUSED;
GLuint getNewTexture();
static const size_t texturesSize = 10;
size_t mFreeTextureIndex;
GLuint mTextures[texturesSize];
static int mTextureSize;
static bool mBlur;
static bool mUseTextureSampler;
};
#endif // USE_OPENGL
#endif // RESOURCES_OPENGLIMAGEHELPER_H
|
