/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2012 The ManaPlus Developers * * 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/openglimagehelper.h" #ifdef USE_OPENGL #include "client.h" #include "game.h" #include "graphicsmanager.h" #include "logger.h" #include "mgl.h" #include "normalopenglgraphics.h" #include "safeopenglgraphics.h" #include "resources/dye.h" #include "resources/image.h" #include "resources/resourcemanager.h" #include "utils/stringutils.h" #include <SDL_image.h> #include <SDL_rotozoom.h> #include "debug.h" int OpenGLImageHelper::mTextureType = 0; int OpenGLImageHelper::mInternalTextureType = GL_RGBA8; int OpenGLImageHelper::mTextureSize = 0; bool OpenGLImageHelper::mBlur = true; int OpenGLImageHelper::mUseOpenGL = 0; bool OpenGLImageHelper::mUseTextureSampler = false; Image *OpenGLImageHelper::load(SDL_RWops *const rw, Dye const &dye) { SDL_Surface *const tmpImage = IMG_Load_RW(rw, 1); if (!tmpImage) { logger->log("Error, image load failed: %s", IMG_GetError()); return nullptr; } SDL_Surface *const surf = convertTo32Bit(tmpImage); SDL_FreeSurface(tmpImage); uint32_t *pixels = static_cast<uint32_t *>(surf->pixels); const int type = dye.getType(); switch (type) { case 1: { DyePalette *const pal = dye.getSPalete(); if (pal) { for (uint32_t *p_end = pixels + surf->w * surf->h; pixels != p_end; ++pixels) { uint8_t *p = reinterpret_cast<uint8_t *>(pixels); const int alpha = *p & 255; if (!alpha) continue; pal->replaceSOGLColor(p); } } break; } case 2: { DyePalette *const pal = dye.getAPalete(); if (pal) { for (uint32_t *p_end = pixels + surf->w * surf->h; pixels != p_end; ++pixels) { pal->replaceAOGLColor(reinterpret_cast<uint8_t *>(pixels)); } } break; } case 0: default: { for (uint32_t *p_end = pixels + surf->w * surf->h; pixels != p_end; ++pixels) { const uint32_t p = *pixels; const int alpha = (p >> 24) & 255; if (!alpha) continue; int v[3]; v[0] = (p) & 255; v[1] = (p >> 8) & 255; v[2] = (p >> 16 ) & 255; dye.update(v); *pixels = (v[0]) | (v[1] << 8) | (v[2] << 16) | (alpha << 24); } break; } } Image *const image = load(surf); SDL_FreeSurface(surf); return image; } Image *OpenGLImageHelper::load(SDL_Surface *const tmpImage) { return glLoad(tmpImage); } Image *OpenGLImageHelper::createTextSurface(SDL_Surface *const tmpImage, const float alpha) { if (!tmpImage) return nullptr; Image *const img = glLoad(tmpImage); if (img) img->setAlpha(alpha); return img; } int OpenGLImageHelper::powerOfTwo(int input) const { int value; if (mTextureType == GL_TEXTURE_2D) { value = 1; while (value < input && value < mTextureSize) value <<= 1; } else { value = input; } return value >= mTextureSize ? mTextureSize : value; } Image *OpenGLImageHelper::glLoad(SDL_Surface *tmpImage) { if (!tmpImage) return nullptr; // Flush current error flag. glGetError(); int width = tmpImage->w; int height = tmpImage->h; 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); } // Make sure the alpha channel is not used, but copied to destination SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE); // Determine 32-bit masks based on byte order uint32_t rmask, gmask, bmask, amask; #if SDL_BYTEORDER == SDL_BIG_ENDIAN rmask = 0xff000000; gmask = 0x00ff0000; bmask = 0x0000ff00; amask = 0x000000ff; #else rmask = 0x000000ff; gmask = 0x0000ff00; bmask = 0x00ff0000; amask = 0xff000000; #endif SDL_Surface *oldImage = nullptr; if (tmpImage->format->BitsPerPixel != 32 || realWidth != width || realHeight != height || rmask != tmpImage->format->Rmask || gmask != tmpImage->format->Gmask || amask != tmpImage->format->Amask) { oldImage = tmpImage; tmpImage = SDL_CreateRGBSurface(SDL_SWSURFACE, realWidth, realHeight, 32, rmask, gmask, bmask, amask); if (!tmpImage) { logger->log("Error, image convert failed: out of memory"); return nullptr; } SDL_BlitSurface(oldImage, nullptr, tmpImage, nullptr); } GLuint texture; glGenTextures(1, &texture); if (mUseOpenGL == 1) NormalOpenGLGraphics::bindTexture(mTextureType, texture); else if (mUseOpenGL == 2) SafeOpenGLGraphics::bindTexture(mTextureType, 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); } } glTexImage2D(mTextureType, 0, mInternalTextureType, tmpImage->w, tmpImage->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, tmpImage->pixels); /* 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 if (SDL_MUSTLOCK(tmpImage)) SDL_UnlockSurface(tmpImage); if (oldImage) SDL_FreeSurface(tmpImage); GLenum error = glGetError(); if (error) { std::string errmsg = "Unknown error"; switch (error) { case GL_INVALID_ENUM: errmsg = "GL_INVALID_ENUM"; break; case GL_INVALID_VALUE: errmsg = "GL_INVALID_VALUE"; break; case GL_INVALID_OPERATION: errmsg = "GL_INVALID_OPERATION"; break; case GL_STACK_OVERFLOW: errmsg = "GL_STACK_OVERFLOW"; break; case GL_STACK_UNDERFLOW: errmsg = "GL_STACK_UNDERFLOW"; break; case GL_OUT_OF_MEMORY: errmsg = "GL_OUT_OF_MEMORY"; break; default: break; } logger->log("Error: Image GL import failed: %s", errmsg.c_str()); return nullptr; } return new Image(texture, width, height, realWidth, realHeight); } void OpenGLImageHelper::setLoadAsOpenGL(int useOpenGL) { OpenGLImageHelper::mUseOpenGL = useOpenGL; } int OpenGLImageHelper::useOpenGL() { return mUseOpenGL; } void OpenGLImageHelper::initTextureSampler(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); } } #endif