Head

GCC Code Coverage Report

Directory:	src/		Exec	Total	Coverage
File:	src/resources/safeopenglimagehelper.cpp	Lines:	0	167	0.0 %
Date:	2021-03-17	Branches:	0	123	0.0 %


/*
 *  The ManaPlus Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2019  The ManaPlus Developers
 *  Copyright (C) 2019-2021  Andrei Karas
 *
 *  This file is part of The ManaPlus 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/>.
 */

#include "resources/safeopenglimagehelper.h"

#if defined(USE_OPENGL) && !defined(ANDROID) && !defined(__SWITCH__)

#include "graphicsmanager.h"

#include "render/mobileopengl2graphics.h"
#include "render/mobileopenglgraphics.h"
#include "render/modernopenglgraphics.h"
#include "render/normalopenglgraphics.h"
#include "render/safeopenglgraphics.h"

#include "render/opengl/mgl.h"
#include "render/opengl/mglcheck.h"

#include "resources/dye/dye.h"
#include "resources/dye/dyepalette.h"

#include "resources/image/image.h"

#include "utils/sdlcheckutils.h"

#include "debug.h"

#ifndef SDL_BIG_ENDIAN
#error missing SDL_endian.h
#endif  // SDL_BYTEORDER

int SafeOpenGLImageHelper::mTextureType = 0;
int SafeOpenGLImageHelper::mInternalTextureType = GL_RGBA8;
int SafeOpenGLImageHelper::mTextureSize = 0;
bool SafeOpenGLImageHelper::mBlur = true;
bool SafeOpenGLImageHelper::mUseTextureSampler = false;

SafeOpenGLImageHelper::~SafeOpenGLImageHelper()
{
    glDeleteTextures(static_cast<GLsizei>(texturesSize - mFreeTextureIndex),
        &mTextures[mFreeTextureIndex]);
}

Image *SafeOpenGLImageHelper::load(SDL_RWops *const rw,
                                   Dye const &dye)
{
    SDL_Surface *const tmpImage = loadPng(rw);
    if (tmpImage == nullptr)
    {
        logger->log("Error, image load failed: %s", SDL_GetError());
        return nullptr;
    }

    SDL_Surface *const surf = convertTo32Bit(tmpImage);
    MSDL_FreeSurface(tmpImage);
    if (surf == nullptr)
        return nullptr;

    uint32_t *pixels = static_cast<uint32_t *>(surf->pixels);
    const int type = dye.getType();

    switch (type)
    {
        case 1:
        {
            const DyePalette *const pal = dye.getSPalete();
            if (pal != nullptr)
                DYEPALETTEP(pal, SOGLColor)(pixels, surf->w * surf->h);
            break;
        }
        case 2:
        {
            const DyePalette *const pal = dye.getAPalete();
            if (pal != nullptr)
                DYEPALETTEP(pal, AOGLColor)(pixels, surf->w * surf->h);
            break;
        }
        case 0:
        default:
        {
            dye.normalOGLDye(pixels, surf->w * surf->h);
            break;
        }
    }

    Image *const image = loadSurface(surf);
    MSDL_FreeSurface(surf);
    return image;
}

Image *SafeOpenGLImageHelper::loadSurface(SDL_Surface *const tmpImage)
{
    return glLoad(tmpImage);
}

Image *SafeOpenGLImageHelper::createTextSurface(SDL_Surface *const tmpImage,
                                                const int width,
                                                const int height,
                                                const float alpha)
{
    if (tmpImage == nullptr)
        return nullptr;

    Image *const img = glLoad(tmpImage, width, height);
    if (img != nullptr)
        img->setAlpha(alpha);
    return img;
}

int SafeOpenGLImageHelper::powerOfTwo(const int input)
{
    int value = 1;
    while (value < input && value < mTextureSize)
        value <<= 1;
    return value >= mTextureSize ? mTextureSize : value;
}

SDL_Surface *SafeOpenGLImageHelper::convertSurfaceNormalize(SDL_Surface
                                                            *tmpImage,
                                                            int width,
                                                            int height)
{
    if (tmpImage == nullptr)
        return nullptr;

    int realWidth = powerOfTwo(width);
    int realHeight = powerOfTwo(height);

    if (realWidth < width || realHeight < height)
    {
        logger->log("Warning: image too large, cropping to %dx%d texture!",
                    tmpImage->w, tmpImage->h);
    }

#ifdef USE_SDL2
    SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE);
#else  // USE_SDL2

    // Make sure the alpha channel is not used, but copied to destination
    SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE);
#endif  // USE_SDL2

    // Determine 32-bit masks based on byte order
    uint32_t rmask, gmask, bmask, amask;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
    rmask = 0xff000000U;
    gmask = 0x00ff0000U;
    bmask = 0x0000ff00U;
    amask = 0x000000ffU;
#else  // SDL_BYTEORDER == SDL_BIG_ENDIAN

    rmask = 0x000000ffU;
    gmask = 0x0000ff00U;
    bmask = 0x00ff0000U;
    amask = 0xff000000U;
#endif  // SDL_BYTEORDER == SDL_BIG_ENDIAN

    if (tmpImage->format->BitsPerPixel != 32
        || realWidth != width || realHeight != height
        || rmask != tmpImage->format->Rmask
        || gmask != tmpImage->format->Gmask
        || amask != tmpImage->format->Amask)
    {
        SDL_Surface *oldImage = tmpImage;
#ifdef USE_SDL2
        SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE);
#endif  // USE_SDL2

        tmpImage = MSDL_CreateRGBSurface(SDL_SWSURFACE, realWidth, realHeight,
            32, rmask, gmask, bmask, amask);

        if (tmpImage == nullptr)
        {
            logger->log("Error, image convert failed: out of memory");
            return nullptr;
        }
        SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr);
    }
    return tmpImage;
}

SDL_Surface *SafeOpenGLImageHelper::convertSurface(SDL_Surface *tmpImage,
                                                   int width,
                                                   int height)
{
    if (tmpImage == nullptr)
        return nullptr;

#ifdef USE_SDL2
    SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE);
#else  // USE_SDL2

    // Make sure the alpha channel is not used, but copied to destination
    SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE);
#endif  // USE_SDL2

    // Determine 32-bit masks based on byte order
    uint32_t rmask, gmask, bmask, amask;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
    rmask = 0xff000000U;
    gmask = 0x00ff0000U;
    bmask = 0x0000ff00U;
    amask = 0x000000ffU;
#else  // SDL_BYTEORDER == SDL_BIG_ENDIAN

    rmask = 0x000000ffU;
    gmask = 0x0000ff00U;
    bmask = 0x00ff0000U;
    amask = 0xff000000U;
#endif  // SDL_BYTEORDER == SDL_BIG_ENDIAN

    if (tmpImage->format->BitsPerPixel != 32
        || rmask != tmpImage->format->Rmask
        || gmask != tmpImage->format->Gmask
        || amask != tmpImage->format->Amask)
    {
        SDL_Surface *oldImage = tmpImage;
#ifdef USE_SDL2
        SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE);
#endif  // USE_SDL2

        tmpImage = MSDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
            32, rmask, gmask, bmask, amask);

        if (tmpImage == nullptr)
        {
            logger->log("Error, image convert failed: out of memory");
            return nullptr;
        }
        SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr);
    }
    return tmpImage;
}

void SafeOpenGLImageHelper::bindTexture(const GLuint texture)
{
    switch (mUseOpenGL)
    {
#ifdef __native_client__
        case RENDER_NORMAL_OPENGL:
        case RENDER_MODERN_OPENGL:
        case RENDER_GLES_OPENGL:
            break;
        case RENDER_SAFE_OPENGL:
            SafeOpenGLGraphics::bindTexture(mTextureType, texture);
            break;
        case RENDER_GLES2_OPENGL:
            MobileOpenGL2Graphics::bindTexture(mTextureType, texture);
            break;
#elif defined(ANDROID)
        case RENDER_NORMAL_OPENGL:
        case RENDER_MODERN_OPENGL:
        case RENDER_SAFE_OPENGL:
        case RENDER_GLES2_OPENGL:
            break;
        case RENDER_GLES_OPENGL:
            MobileOpenGLGraphics::bindTexture(mTextureType, texture);
            break;
#else  // __native_client__
        case RENDER_NORMAL_OPENGL:
            NormalOpenGLGraphics::bindTexture(mTextureType, texture);
            break;
        case RENDER_MODERN_OPENGL:
            ModernOpenGLGraphics::bindTexture(mTextureType, texture);
            break;
        case RENDER_SAFE_OPENGL:
            SafeOpenGLGraphics::bindTexture(mTextureType, texture);
            break;
        case RENDER_GLES_OPENGL:
            MobileOpenGLGraphics::bindTexture(mTextureType, texture);
            break;
        case RENDER_GLES2_OPENGL:
            MobileOpenGL2Graphics::bindTexture(mTextureType, texture);
            break;
#endif  // __native_client__
        case RENDER_SOFTWARE:
        case RENDER_SDL2_DEFAULT:
        case RENDER_NULL:
        case RENDER_LAST:
        default:
            logger->log("Unknown OpenGL backend: %d", mUseOpenGL);
            break;
    }
}

Image *SafeOpenGLImageHelper::glLoad(SDL_Surface *tmpImage,
                                     int width,
                                     int height)
{
    if (tmpImage == nullptr)
        return nullptr;

    BLOCK_START("SafeOpenGLImageHelper::glLoad")
    // Flush current error flag.
    graphicsManager.getLastError();

    if (width == 0)
        width = tmpImage->w;
    if (height == 0)
        height = tmpImage->h;

    SDL_Surface *oldImage = tmpImage;
    tmpImage = convertSurfaceNormalize(tmpImage, width, height);
    if (tmpImage == nullptr)
        return nullptr;

    const int realWidth = tmpImage->w;
    const int realHeight = tmpImage->h;

    const GLuint texture = getNewTexture();
    bindTexture(texture);

    if (SDL_MUSTLOCK(tmpImage))
        SDL_LockSurface(tmpImage);

    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

    if (!mUseTextureSampler)
    {
        if (mBlur)
        {
            glTexParameteri(mTextureType, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
            glTexParameteri(mTextureType, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
        }
        else
        {
            glTexParameteri(mTextureType, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
            glTexParameteri(mTextureType, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
        }
    }
#ifndef ANDROID
    glTexParameteri(mTextureType, GL_TEXTURE_MAX_LEVEL, 0);
#endif  // ANDROID

    glTexImage2D(mTextureType, 0, mInternalTextureType,
        tmpImage->w, tmpImage->h,
        0, GL_RGBA, GL_UNSIGNED_BYTE, tmpImage->pixels);

#ifdef DEBUG_OPENGL
/*
    disabled for now, because debugger can't show it
    if (isGLNotNull(mglLabelObject))
    {
        const char *const text = "image text";
        mglLabelObject(GL_TEXTURE, texture, strlen(text), text);
    }
*/
#endif  // DEBUG_OPENGL

/*
    GLint compressed;
    glGetTexLevelParameteriv(mTextureType, 0,
        GL_TEXTURE_COMPRESSED_ARB, &compressed);
    if (compressed)
        logger->log("image compressed");
    else
        logger->log("image not compressed");
*/

#ifdef DEBUG_OPENGL_LEAKS
    textures_count ++;
#endif  // DEBUG_OPENGL_LEAKS

    if (SDL_MUSTLOCK(tmpImage))
        SDL_UnlockSurface(tmpImage);

    if (oldImage != tmpImage)
        MSDL_FreeSurface(tmpImage);

    GLenum error = graphicsManager.getLastError();
    if (error != 0U)
    {
        std::string errmsg = GraphicsManager::errorToString(error);
        logger->log("Error: Image GL import failed: %s (%u)",
            errmsg.c_str(), error);
//        return nullptr;
    }

    BLOCK_END("SafeOpenGLImageHelper::glLoad")
    return new Image(texture, width, height, realWidth, realHeight);
}

void SafeOpenGLImageHelper::initTextureSampler(const GLint id)
{
    if (mBlur)
    {
        mglSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        mglSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    }
    else
    {
        mglSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
        mglSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    }
}

SDL_Surface *SafeOpenGLImageHelper::create32BitSurface(int width,
                                                       int height) const
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
    const uint32_t rmask = 0xff000000U;
    const uint32_t gmask = 0x00ff0000U;
    const uint32_t bmask = 0x0000ff00U;
    const uint32_t amask = 0x000000ffU;
#else  // SDL_BYTEORDER == SDL_BIG_ENDIAN

    const uint32_t rmask = 0x000000ffU;
    const uint32_t gmask = 0x0000ff00U;
    const uint32_t bmask = 0x00ff0000U;
    const uint32_t amask = 0xff000000U;
#endif  // SDL_BYTEORDER == SDL_BIG_ENDIAN

    width = powerOfTwo(width);
    height = powerOfTwo(height);

    return MSDL_CreateRGBSurface(SDL_SWSURFACE,
        width, height, 32, rmask, gmask, bmask, amask);
}

GLuint SafeOpenGLImageHelper::getNewTexture()
{
    GLuint texture = mTextures[mFreeTextureIndex];
    mFreeTextureIndex ++;
    if (mFreeTextureIndex == texturesSize)
    {
        mFreeTextureIndex = 0;
        postInit();
    }
    return texture;
}

void SafeOpenGLImageHelper::postInit()
{
    glGenTextures(texturesSize, &mTextures[mFreeTextureIndex]);
}

void SafeOpenGLImageHelper::invalidate(const GLuint textureId)
{
    if (isGLNotNull(mglInvalidateTexImage))
    {
        logger->log("invalidate: %u", textureId);
        mglInvalidateTexImage(textureId, 0);
    }
}

void SafeOpenGLImageHelper::copySurfaceToImage(const Image *const image,
                                               const int x,
                                               const int y,
                                               SDL_Surface *surface) const
{
    if (surface == nullptr || image == nullptr)
        return;

    SDL_Surface *const oldSurface = surface;
    surface = convertSurface(surface, surface->w, surface->h);
    if (surface == nullptr)
        return;

    // +++ probably need combine
    // mglTextureSubImage2D and mglTextureSubImage2DEXT
    if (mglTextureSubImage2D != nullptr)
    {
        mglTextureSubImage2D(image->mGLImage,
            0,
            x, y,
            surface->w, surface->h,
            GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
    }
    else
    {
        mglTextureSubImage2DEXT(image->mGLImage,
            mTextureType, 0,
            x, y,
            surface->w, surface->h,
            GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
    }

    if (surface != oldSurface)
        MSDL_FreeSurface(surface);
}

#endif  // defined(USE_OPENGL) && !defined(ANDROID)


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/*
2			* The ManaPlus Client
3			* Copyright (C) 2004-2009 The Mana World Development Team
4			* Copyright (C) 2009-2010 The Mana Developers
5			* Copyright (C) 2011-2019 The ManaPlus Developers
6			* Copyright (C) 2019-2021 Andrei Karas
7			*
8			* This file is part of The ManaPlus Client.
9			*
10			* This program is free software; you can redistribute it and/or modify
11			* it under the terms of the GNU General Public License as published by
12			* the Free Software Foundation; either version 2 of the License, or
13			* any later version.
14			*
15			* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU General Public License for more details.
19			*
20			* You should have received a copy of the GNU General Public License
21			* along with this program. If not, see <http://www.gnu.org/licenses/>.
22			*/
23
24			#include "resources/safeopenglimagehelper.h"
25
26			#if defined(USE_OPENGL) && !defined(ANDROID) && !defined(__SWITCH__)
27
28			#include "graphicsmanager.h"
29
30			#include "render/mobileopengl2graphics.h"
31			#include "render/mobileopenglgraphics.h"
32			#include "render/modernopenglgraphics.h"
33			#include "render/normalopenglgraphics.h"
34			#include "render/safeopenglgraphics.h"
35
36			#include "render/opengl/mgl.h"
37			#include "render/opengl/mglcheck.h"
38
39			#include "resources/dye/dye.h"
40			#include "resources/dye/dyepalette.h"
41
42			#include "resources/image/image.h"
43
44			#include "utils/sdlcheckutils.h"
45
46			#include "debug.h"
47
48			#ifndef SDL_BIG_ENDIAN
49			#error missing SDL_endian.h
50			#endif // SDL_BYTEORDER
51
52			int SafeOpenGLImageHelper::mTextureType = 0;
53			int SafeOpenGLImageHelper::mInternalTextureType = GL_RGBA8;
54			int SafeOpenGLImageHelper::mTextureSize = 0;
55			bool SafeOpenGLImageHelper::mBlur = true;
56			bool SafeOpenGLImageHelper::mUseTextureSampler = false;
57
58			SafeOpenGLImageHelper::~SafeOpenGLImageHelper()
59			{
60			glDeleteTextures(static_cast<GLsizei>(texturesSize - mFreeTextureIndex),
61			&mTextures[mFreeTextureIndex]);
62			}
63
64			Image SafeOpenGLImageHelper::load(SDL_RWops const rw,
65			Dye const &dye)
66			{
67			SDL_Surface *const tmpImage = loadPng(rw);
68			if (tmpImage == nullptr)
69			{
70			logger->log("Error, image load failed: %s", SDL_GetError());
71			return nullptr;
72			}
73
74			SDL_Surface *const surf = convertTo32Bit(tmpImage);
75			MSDL_FreeSurface(tmpImage);
76			if (surf == nullptr)
77			return nullptr;
78
79			uint32_t pixels = static_cast<uint32_t >(surf->pixels);
80			const int type = dye.getType();
81
82			switch (type)
83			{
84			case 1:
85			{
86			const DyePalette *const pal = dye.getSPalete();
87			if (pal != nullptr)
88			DYEPALETTEP(pal, SOGLColor)(pixels, surf->w * surf->h);
89			break;
90			}
91			case 2:
92			{
93			const DyePalette *const pal = dye.getAPalete();
94			if (pal != nullptr)
95			DYEPALETTEP(pal, AOGLColor)(pixels, surf->w * surf->h);
96			break;
97			}
98			case 0:
99			default:
100			{
101			dye.normalOGLDye(pixels, surf->w * surf->h);
102			break;
103			}
104			}
105
106			Image *const image = loadSurface(surf);
107			MSDL_FreeSurface(surf);
108			return image;
109			}
110
111			Image SafeOpenGLImageHelper::loadSurface(SDL_Surface const tmpImage)
112			{
113			return glLoad(tmpImage);
114			}
115
116			Image SafeOpenGLImageHelper::createTextSurface(SDL_Surface const tmpImage,
117			const int width,
118			const int height,
119			const float alpha)
120			{
121			if (tmpImage == nullptr)
122			return nullptr;
123
124			Image *const img = glLoad(tmpImage, width, height);
125			if (img != nullptr)
126			img->setAlpha(alpha);
127			return img;
128			}
129
130			int SafeOpenGLImageHelper::powerOfTwo(const int input)
131			{
132			int value = 1;
133			while (value < input && value < mTextureSize)
134			value <<= 1;
135			return value >= mTextureSize ? mTextureSize : value;
136			}
137
138			SDL_Surface *SafeOpenGLImageHelper::convertSurfaceNormalize(SDL_Surface
139			*tmpImage,
140			int width,
141			int height)
142			{
143			if (tmpImage == nullptr)
144			return nullptr;
145
146			int realWidth = powerOfTwo(width);
147			int realHeight = powerOfTwo(height);
148
149			if (realWidth < width \|\| realHeight < height)
150			{
151			logger->log("Warning: image too large, cropping to %dx%d texture!",
152			tmpImage->w, tmpImage->h);
153			}
154
155			#ifdef USE_SDL2
156			SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE);
157			#else // USE_SDL2
158
159			// Make sure the alpha channel is not used, but copied to destination
160			SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE);
161			#endif // USE_SDL2
162
163			// Determine 32-bit masks based on byte order
164			uint32_t rmask, gmask, bmask, amask;
165			#if SDL_BYTEORDER == SDL_BIG_ENDIAN
166			rmask = 0xff000000U;
167			gmask = 0x00ff0000U;
168			bmask = 0x0000ff00U;
169			amask = 0x000000ffU;
170			#else // SDL_BYTEORDER == SDL_BIG_ENDIAN
171
172			rmask = 0x000000ffU;
173			gmask = 0x0000ff00U;
174			bmask = 0x00ff0000U;
175			amask = 0xff000000U;
176			#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN
177
178			if (tmpImage->format->BitsPerPixel != 32
179			\|\| realWidth != width \|\| realHeight != height
180			\|\| rmask != tmpImage->format->Rmask
181			\|\| gmask != tmpImage->format->Gmask
182			\|\| amask != tmpImage->format->Amask)
183			{
184			SDL_Surface *oldImage = tmpImage;
185			#ifdef USE_SDL2
186			SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE);
187			#endif // USE_SDL2
188
189			tmpImage = MSDL_CreateRGBSurface(SDL_SWSURFACE, realWidth, realHeight,
190			32, rmask, gmask, bmask, amask);
191
192			if (tmpImage == nullptr)
193			{
194			logger->log("Error, image convert failed: out of memory");
195			return nullptr;
196			}
197			SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr);
198			}
199			return tmpImage;
200			}
201
202			SDL_Surface SafeOpenGLImageHelper::convertSurface(SDL_Surface tmpImage,
203			int width,
204			int height)
205			{
206			if (tmpImage == nullptr)
207			return nullptr;
208
209			#ifdef USE_SDL2
210			SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE);
211			#else // USE_SDL2
212
213			// Make sure the alpha channel is not used, but copied to destination
214			SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE);
215			#endif // USE_SDL2
216
217			// Determine 32-bit masks based on byte order
218			uint32_t rmask, gmask, bmask, amask;
219			#if SDL_BYTEORDER == SDL_BIG_ENDIAN
220			rmask = 0xff000000U;
221			gmask = 0x00ff0000U;
222			bmask = 0x0000ff00U;
223			amask = 0x000000ffU;
224			#else // SDL_BYTEORDER == SDL_BIG_ENDIAN
225
226			rmask = 0x000000ffU;
227			gmask = 0x0000ff00U;
228			bmask = 0x00ff0000U;
229			amask = 0xff000000U;
230			#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN
231
232			if (tmpImage->format->BitsPerPixel != 32
233			\|\| rmask != tmpImage->format->Rmask
234			\|\| gmask != tmpImage->format->Gmask
235			\|\| amask != tmpImage->format->Amask)
236			{
237			SDL_Surface *oldImage = tmpImage;
238			#ifdef USE_SDL2
239			SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE);
240			#endif // USE_SDL2
241
242			tmpImage = MSDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
243			32, rmask, gmask, bmask, amask);
244
245			if (tmpImage == nullptr)
246			{
247			logger->log("Error, image convert failed: out of memory");
248			return nullptr;
249			}
250			SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr);
251			}
252			return tmpImage;
253			}
254
255			void SafeOpenGLImageHelper::bindTexture(const GLuint texture)
256			{
257			switch (mUseOpenGL)
258			{
259			#ifdef __native_client__
260			case RENDER_NORMAL_OPENGL:
261			case RENDER_MODERN_OPENGL:
262			case RENDER_GLES_OPENGL:
263			break;
264			case RENDER_SAFE_OPENGL:
265			SafeOpenGLGraphics::bindTexture(mTextureType, texture);
266			break;
267			case RENDER_GLES2_OPENGL:
268			MobileOpenGL2Graphics::bindTexture(mTextureType, texture);
269			break;
270			#elif defined(ANDROID)
271			case RENDER_NORMAL_OPENGL:
272			case RENDER_MODERN_OPENGL:
273			case RENDER_SAFE_OPENGL:
274			case RENDER_GLES2_OPENGL:
275			break;
276			case RENDER_GLES_OPENGL:
277			MobileOpenGLGraphics::bindTexture(mTextureType, texture);
278			break;
279			#else // __native_client__
280			case RENDER_NORMAL_OPENGL:
281			NormalOpenGLGraphics::bindTexture(mTextureType, texture);
282			break;
283			case RENDER_MODERN_OPENGL:
284			ModernOpenGLGraphics::bindTexture(mTextureType, texture);
285			break;
286			case RENDER_SAFE_OPENGL:
287			SafeOpenGLGraphics::bindTexture(mTextureType, texture);
288			break;
289			case RENDER_GLES_OPENGL:
290			MobileOpenGLGraphics::bindTexture(mTextureType, texture);
291			break;
292			case RENDER_GLES2_OPENGL:
293			MobileOpenGL2Graphics::bindTexture(mTextureType, texture);
294			break;
295			#endif // __native_client__
296			case RENDER_SOFTWARE:
297			case RENDER_SDL2_DEFAULT:
298			case RENDER_NULL:
299			case RENDER_LAST:
300			default:
301			logger->log("Unknown OpenGL backend: %d", mUseOpenGL);
302			break;
303			}
304			}
305
306			Image SafeOpenGLImageHelper::glLoad(SDL_Surface tmpImage,
307			int width,
308			int height)
309			{
310			if (tmpImage == nullptr)
311			return nullptr;
312
313			BLOCK_START("SafeOpenGLImageHelper::glLoad")
314			// Flush current error flag.
315			graphicsManager.getLastError();
316
317			if (width == 0)
318			width = tmpImage->w;
319			if (height == 0)
320			height = tmpImage->h;
321
322			SDL_Surface *oldImage = tmpImage;
323			tmpImage = convertSurfaceNormalize(tmpImage, width, height);
324			if (tmpImage == nullptr)
325			return nullptr;
326
327			const int realWidth = tmpImage->w;
328			const int realHeight = tmpImage->h;
329
330			const GLuint texture = getNewTexture();
331			bindTexture(texture);
332
333			if (SDL_MUSTLOCK(tmpImage))
334			SDL_LockSurface(tmpImage);
335
336			glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
337
338			if (!mUseTextureSampler)
339			{
340			if (mBlur)
341			{
342			glTexParameteri(mTextureType, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
343			glTexParameteri(mTextureType, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
344			}
345			else
346			{
347			glTexParameteri(mTextureType, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
348			glTexParameteri(mTextureType, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
349			}
350			}
351			#ifndef ANDROID
352			glTexParameteri(mTextureType, GL_TEXTURE_MAX_LEVEL, 0);
353			#endif // ANDROID
354
355			glTexImage2D(mTextureType, 0, mInternalTextureType,
356			tmpImage->w, tmpImage->h,
357			0, GL_RGBA, GL_UNSIGNED_BYTE, tmpImage->pixels);
358
359			#ifdef DEBUG_OPENGL
360			/*
361			disabled for now, because debugger can't show it
362			if (isGLNotNull(mglLabelObject))
363			{
364			const char *const text = "image text";
365			mglLabelObject(GL_TEXTURE, texture, strlen(text), text);
366			}
367			*/
368			#endif // DEBUG_OPENGL
369
370			/*
371			GLint compressed;
372			glGetTexLevelParameteriv(mTextureType, 0,
373			GL_TEXTURE_COMPRESSED_ARB, &compressed);
374			if (compressed)
375			logger->log("image compressed");
376			else
377			logger->log("image not compressed");
378			*/
379
380			#ifdef DEBUG_OPENGL_LEAKS
381			textures_count ++;
382			#endif // DEBUG_OPENGL_LEAKS
383
384			if (SDL_MUSTLOCK(tmpImage))
385			SDL_UnlockSurface(tmpImage);
386
387			if (oldImage != tmpImage)
388			MSDL_FreeSurface(tmpImage);
389
390			GLenum error = graphicsManager.getLastError();
391			if (error != 0U)
392			{
393			std::string errmsg = GraphicsManager::errorToString(error);
394			logger->log("Error: Image GL import failed: %s (%u)",
395			errmsg.c_str(), error);
396			// return nullptr;
397			}
398
399			BLOCK_END("SafeOpenGLImageHelper::glLoad")
400			return new Image(texture, width, height, realWidth, realHeight);
401			}
402
403			void SafeOpenGLImageHelper::initTextureSampler(const GLint id)
404			{
405			if (mBlur)
406			{
407			mglSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
408			mglSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
409			}
410			else
411			{
412			mglSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
413			mglSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
414			}
415			}
416
417			SDL_Surface *SafeOpenGLImageHelper::create32BitSurface(int width,
418			int height) const
419			{
420			#if SDL_BYTEORDER == SDL_BIG_ENDIAN
421			const uint32_t rmask = 0xff000000U;
422			const uint32_t gmask = 0x00ff0000U;
423			const uint32_t bmask = 0x0000ff00U;
424			const uint32_t amask = 0x000000ffU;
425			#else // SDL_BYTEORDER == SDL_BIG_ENDIAN
426
427			const uint32_t rmask = 0x000000ffU;
428			const uint32_t gmask = 0x0000ff00U;
429			const uint32_t bmask = 0x00ff0000U;
430			const uint32_t amask = 0xff000000U;
431			#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN
432
433			width = powerOfTwo(width);
434			height = powerOfTwo(height);
435
436			return MSDL_CreateRGBSurface(SDL_SWSURFACE,
437			width, height, 32, rmask, gmask, bmask, amask);
438			}
439
440			GLuint SafeOpenGLImageHelper::getNewTexture()
441			{
442			GLuint texture = mTextures[mFreeTextureIndex];
443			mFreeTextureIndex ++;
444			if (mFreeTextureIndex == texturesSize)
445			{
446			mFreeTextureIndex = 0;
447			postInit();
448			}
449			return texture;
450			}
451
452			void SafeOpenGLImageHelper::postInit()
453			{
454			glGenTextures(texturesSize, &mTextures[mFreeTextureIndex]);
455			}
456
457			void SafeOpenGLImageHelper::invalidate(const GLuint textureId)
458			{
459			if (isGLNotNull(mglInvalidateTexImage))
460			{
461			logger->log("invalidate: %u", textureId);
462			mglInvalidateTexImage(textureId, 0);
463			}
464			}
465
466			void SafeOpenGLImageHelper::copySurfaceToImage(const Image *const image,
467			const int x,
468			const int y,
469			SDL_Surface *surface) const
470			{
471			if (surface == nullptr \|\| image == nullptr)
472			return;
473
474			SDL_Surface *const oldSurface = surface;
475			surface = convertSurface(surface, surface->w, surface->h);
476			if (surface == nullptr)
477			return;
478
479			// +++ probably need combine
480			// mglTextureSubImage2D and mglTextureSubImage2DEXT
481			if (mglTextureSubImage2D != nullptr)
482			{
483			mglTextureSubImage2D(image->mGLImage,
484			0,
485			x, y,
486			surface->w, surface->h,
487			GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
488			}
489			else
490			{
491			mglTextureSubImage2DEXT(image->mGLImage,
492			mTextureType, 0,
493			x, y,
494			surface->w, surface->h,
495			GL_RGBA, GL_UNSIGNED_BYTE, surface->pixels);
496			}
497
498			if (surface != oldSurface)
499			MSDL_FreeSurface(surface);
500			}
501
502			#endif // defined(USE_OPENGL) && !defined(ANDROID)