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/* |
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* The ManaPlus Client |
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* Copyright (C) 2004-2009 The Mana World Development Team |
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* Copyright (C) 2009-2010 The Mana Developers |
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* Copyright (C) 2011-2018 The ManaPlus Developers |
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* |
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* This file is part of The ManaPlus Client. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#ifndef USE_SDL2 |
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#include "resources/sdlimagehelper.h" |
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#include "resources/dye/dye.h" |
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#include "resources/dye/dyepalette.h" |
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#include "resources/image/image.h" |
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#include "utils/checkutils.h" |
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#include "utils/sdlcheckutils.h" |
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#include "localconsts.h" |
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN |
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#include "resources/sdlgfxblitfunc.h" |
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#else // SDL_BYTEORDER == SDL_LIL_ENDIAN |
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PRAGMA48(GCC diagnostic push) |
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PRAGMA48(GCC diagnostic ignored "-Wshadow") |
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#include <SDL_gfxBlitFunc.h> |
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PRAGMA48(GCC diagnostic pop) |
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#endif // SDL_BYTEORDER == SDL_LIL_ENDIAN |
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#ifndef SDL_BIG_ENDIAN |
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#error missing SDL_endian.h |
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#endif // SDL_BYTEORDER |
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#include "debug.h" |
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bool SDLImageHelper::mEnableAlphaCache = false; |
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Image *SDLImageHelper::load(SDL_RWops *const rw, Dye const &dye) |
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{ |
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SDL_Surface *const tmpImage = loadPng(rw); |
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✗✓ |
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if (tmpImage == nullptr) |
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{ |
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reportAlways("Error, image load failed: %s", |
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SDL_GetError()); |
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return nullptr; |
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} |
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SDL_PixelFormat rgba; |
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rgba.palette = nullptr; |
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rgba.BitsPerPixel = 32; |
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rgba.BytesPerPixel = 4; |
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rgba.colorkey = 0; |
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rgba.alpha = 255; |
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rgba.Rloss = 0; |
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rgba.Gloss = 0; |
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rgba.Bloss = 0; |
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rgba.Aloss = 0; |
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN |
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rgba.Rmask = 0x000000FF; |
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rgba.Rshift = 24; |
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rgba.Gmask = 0x0000FF00; |
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rgba.Gshift = 16; |
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rgba.Bmask = 0x00FF0000; |
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rgba.Bshift = 8; |
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rgba.Amask = 0xFF000000; |
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rgba.Ashift = 0; |
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#else // SDL_BYTEORDER == SDL_BIG_ENDIAN |
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rgba.Rmask = 0xFF000000; |
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rgba.Rshift = 0; |
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rgba.Gmask = 0x00FF0000; |
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rgba.Gshift = 8; |
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rgba.Bmask = 0x0000FF00; |
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rgba.Bshift = 16; |
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rgba.Amask = 0x000000FF; |
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rgba.Ashift = 24; |
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#endif // SDL_BYTEORDER == SDL_BIG_ENDIAN |
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// +++ here is bug on ppc64le |
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SDL_Surface *const surf = MSDL_ConvertSurface( |
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tmpImage, &rgba, SDL_SWSURFACE); |
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MSDL_FreeSurface(tmpImage); |
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✓✗ |
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if (surf == nullptr) |
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return nullptr; |
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uint32_t *pixels = static_cast<uint32_t *>(surf->pixels); |
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const int type = dye.getType(); |
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✓✓✓ |
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switch (type) |
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{ |
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case 1: |
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{ |
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const DyePalette *const pal = dye.getSPalete(); |
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✓✗ |
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if (pal != nullptr) |
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✗✓ |
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DYEPALETTEP(pal, SColor)(pixels, surf->w * surf->h); |
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break; |
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} |
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case 2: |
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{ |
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const DyePalette *const pal = dye.getAPalete(); |
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✓✗ |
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if (pal != nullptr) |
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✗✓ |
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DYEPALETTEP(pal, AColor)(pixels, surf->w * surf->h); |
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break; |
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} |
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case 0: |
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default: |
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{ |
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dye.normalDye(pixels, surf->w * surf->h); |
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break; |
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} |
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} |
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Image *const image = loadSurface(surf); |
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MSDL_FreeSurface(surf); |
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return image; |
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} |
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Image *SDLImageHelper::loadSurface(SDL_Surface *const tmpImage) |
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{ |
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return _SDLload(tmpImage); |
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} |
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Image *SDLImageHelper::createTextSurface(SDL_Surface *const tmpImage, |
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const int width A_UNUSED, |
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const int height A_UNUSED, |
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const float alpha) |
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{ |
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✓✗ |
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if (tmpImage == nullptr) |
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return nullptr; |
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bool hasAlpha = false; |
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const size_t sz = tmpImage->w * tmpImage->h; |
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// The alpha channel to be filled with alpha values |
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uint8_t *alphaChannel = new uint8_t[sz]; |
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const SDL_PixelFormat *const fmt = tmpImage->format; |
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✓✗ |
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if (fmt->Amask != 0u) |
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{ |
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✓✓ |
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for (size_t i = 0; i < sz; ++ i) |
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{ |
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uint32_t c = (static_cast<uint32_t*>(tmpImage->pixels))[i]; |
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const unsigned v = (c & fmt->Amask) >> fmt->Ashift; |
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const uint8_t a = static_cast<uint8_t>((v << fmt->Aloss) |
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+ (v >> (8 - (fmt->Aloss << 1)))); |
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const uint8_t a2 = CAST_U8( |
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static_cast<float>(a) * alpha); |
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c &= ~fmt->Amask; |
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c |= ((a2 >> fmt->Aloss) << fmt->Ashift & fmt->Amask); |
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(static_cast<uint32_t*>(tmpImage->pixels))[i] = c; |
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✓✓ |
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if (a != 255) |
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hasAlpha = true; |
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alphaChannel[i] = a; |
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} |
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} |
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SDL_Surface *image; |
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// Convert the surface to the current display format |
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✓✗ |
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if (hasAlpha) |
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{ |
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image = MSDL_DisplayFormatAlpha(tmpImage); |
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} |
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else |
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{ |
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image = MSDL_DisplayFormat(tmpImage); |
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// We also delete the alpha channel since |
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// it's not used. |
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delete [] alphaChannel; |
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alphaChannel = nullptr; |
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} |
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✗✓ |
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if (image == nullptr) |
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{ |
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reportAlways("Error: Image convert failed."); |
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delete [] alphaChannel; |
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return nullptr; |
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} |
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✓✗ |
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Image *const img = new Image(image, hasAlpha, alphaChannel); |
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img->mAlpha = alpha; |
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return img; |
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} |
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SDL_Surface* SDLImageHelper::SDLDuplicateSurface(SDL_Surface *const tmpImage) |
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{ |
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✓✗✓✗
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if ((tmpImage == nullptr) || (tmpImage->format == nullptr)) |
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return nullptr; |
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return MSDL_ConvertSurface(tmpImage, tmpImage->format, SDL_SWSURFACE); |
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} |
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Image *SDLImageHelper::_SDLload(SDL_Surface *tmpImage) |
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{ |
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✓✗ |
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if (tmpImage == nullptr) |
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return nullptr; |
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bool hasAlpha = false; |
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bool converted = false; |
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✗✓ |
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if (tmpImage->format->BitsPerPixel != 32) |
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{ |
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reportAlways("Non 32 bit image detected"); |
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tmpImage = convertTo32Bit(tmpImage); |
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if (tmpImage == nullptr) |
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return nullptr; |
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converted = true; |
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} |
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const size_t sz = tmpImage->w * tmpImage->h; |
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// The alpha channel to be filled with alpha values |
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uint8_t *alphaChannel = new uint8_t[sz]; |
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// Figure out whether the image uses its alpha layer |
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✓✗ |
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if (tmpImage->format->palette == nullptr) |
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{ |
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const SDL_PixelFormat *const fmt = tmpImage->format; |
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✓✗ |
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if (fmt->Amask != 0u) |
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{ |
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const uint32_t amask = fmt->Amask; |
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const uint8_t ashift = fmt->Ashift; |
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const uint8_t aloss = fmt->Aloss; |
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const uint32_t *pixels = static_cast<uint32_t*>(tmpImage->pixels); |
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✓✓ |
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for (size_t i = 0; i < sz; ++ i) |
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{ |
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const unsigned v = (pixels[i] & amask) >> ashift; |
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const uint8_t a = static_cast<uint8_t>((v << aloss) |
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+ (v >> (8 - (aloss << 1)))); |
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✓✓ |
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if (a != 255) |
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hasAlpha = true; |
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alphaChannel[i] = a; |
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} |
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} |
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else |
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{ |
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ifconstexpr (SDL_ALPHA_OPAQUE != 255) |
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{ |
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hasAlpha = true; |
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memset(alphaChannel, SDL_ALPHA_OPAQUE, sz); |
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} |
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} |
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} |
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else |
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{ |
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ifconstexpr (SDL_ALPHA_OPAQUE != 255) |
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{ |
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hasAlpha = true; |
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memset(alphaChannel, SDL_ALPHA_OPAQUE, sz); |
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} |
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} |
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SDL_Surface *image; |
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// Convert the surface to the current display format |
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✓✓ |
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if (hasAlpha) |
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{ |
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image = MSDL_DisplayFormatAlpha(tmpImage); |
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} |
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else |
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{ |
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image = MSDL_DisplayFormat(tmpImage); |
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// We also delete the alpha channel since |
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// it's not used. |
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✓✗ |
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delete [] alphaChannel; |
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alphaChannel = nullptr; |
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} |
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✗✓ |
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if (image == nullptr) |
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{ |
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reportAlways("Error: Image convert failed."); |
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delete [] alphaChannel; |
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return nullptr; |
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} |
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if (converted) |
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MSDL_FreeSurface(tmpImage); |
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✓✗ |
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return new Image(image, hasAlpha, alphaChannel); |
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} |
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int SDLImageHelper::combineSurface(SDL_Surface *restrict const src, |
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SDL_Rect *restrict const srcrect, |
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SDL_Surface *restrict const dst, |
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SDL_Rect *restrict const dstrect) |
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{ |
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN |
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return SDLgfxBlitRGBA(src, srcrect, dst, dstrect); |
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#else // SDL_BYTEORDER == SDL_LIL_ENDIAN |
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return SDL_gfxBlitRGBA(src, srcrect, dst, dstrect); |
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#endif // SDL_BYTEORDER == SDL_LIL_ENDIAN |
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} |
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void SDLImageHelper::copySurfaceToImage(const Image *const image, |
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const int x, const int y, |
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SDL_Surface *const surface) const |
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{ |
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if ((image == nullptr) || (surface == nullptr)) |
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return; |
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SDL_SetAlpha(surface, 0, SDL_ALPHA_OPAQUE); |
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SDL_Rect rect = |
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{ |
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CAST_S16(x), CAST_S16(y), |
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CAST_U16(surface->w), static_cast<uint16_t>(surface->h) |
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}; |
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SDL_BlitSurface(surface, nullptr, image->mSDLSurface, &rect); |
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} |
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#endif // USE_SDL2 |