/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2013 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 "graphicsmanager.h" #include "logger.h" #include "mgl.h" #include "render/mobileopenglgraphics.h" #include "render/normalopenglgraphics.h" #include "render/renderers.h" #include "render/safeopenglgraphics.h" #include "resources/dye.h" #include "resources/image.h" #include "utils/sdlcheckutils.h" #include <SDL_image.h> #include "debug.h" int OpenGLImageHelper::mTextureType = 0; int OpenGLImageHelper::mInternalTextureType = GL_RGBA8; int OpenGLImageHelper::mTextureSize = 0; bool OpenGLImageHelper::mBlur = true; bool OpenGLImageHelper::mUseTextureSampler = false; Image *OpenGLImageHelper::load(SDL_RWops *const rw, Dye const &dye) const { SDL_Surface *const tmpImage = loadPng(rw); if (!tmpImage) { logger->log("Error, image load failed: %s", IMG_GetError()); return nullptr; } SDL_Surface *const surf = convertTo32Bit(tmpImage); MSDL_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) pal->replaceSOGLColor(pixels, surf->w * surf->h); break; } case 2: { DyePalette *const pal = dye.getAPalete(); if (pal) pal->replaceAOGLColor(pixels, surf->w * surf->h); break; } case 0: default: { dye.normalOGLDye(pixels, surf->w * surf->h); break; } } Image *const image = load(surf); MSDL_FreeSurface(surf); return image; } Image *OpenGLImageHelper::load(SDL_Surface *const tmpImage) const { return glLoad(tmpImage); } Image *OpenGLImageHelper::createTextSurface(SDL_Surface *const tmpImage, const int width, const int height, const float alpha) const { if (!tmpImage) return nullptr; Image *const img = glLoad(tmpImage, width, height); if (img) img->setAlpha(alpha); return img; } int OpenGLImageHelper::powerOfTwo(const 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, int width, int height) const { if (!tmpImage) return nullptr; // Flush current error flag. glGetError(); if (!width) width = tmpImage->w; if (!height) 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); } #ifdef USE_SDL2 SDL_SetSurfaceAlphaMod(tmpImage, SDL_ALPHA_OPAQUE); #else // Make sure the alpha channel is not used, but copied to destination SDL_SetAlpha(tmpImage, 0, SDL_ALPHA_OPAQUE); #endif // 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; #ifdef USE_SDL2 SDL_SetSurfaceBlendMode(oldImage, SDL_BLENDMODE_NONE); #endif tmpImage = MSDL_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); switch (mUseOpenGL) { #ifndef ANDROID case RENDER_NORMAL_OPENGL: NormalOpenGLGraphics::bindTexture(mTextureType, texture); break; case RENDER_SAFE_OPENGL: SafeOpenGLGraphics::bindTexture(mTextureType, texture); break; #else case RENDER_NORMAL_OPENGL: case RENDER_SAFE_OPENGL: #endif case RENDER_GLES_OPENGL: MobileOpenGLGraphics::bindTexture(mTextureType, texture); break; case RENDER_SOFTWARE: case RENDER_SDL2_DEFAULT: case RENDER_NULL: case RENDER_LAST: default: logger->log("Unknown OpenGL backend: %d", mUseOpenGL); break; } 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 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) MSDL_FreeSurface(tmpImage); GLenum error = glGetError(); if (error) { std::string errmsg = GraphicsManager::errorToString(error); logger->log("Error: Image GL import failed: %s (%d)", errmsg.c_str(), error); return nullptr; } return new Image(texture, width, height, realWidth, realHeight); } void OpenGLImageHelper::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 *OpenGLImageHelper::create32BitSurface(int width, int height) const { #if SDL_BYTEORDER == SDL_BIG_ENDIAN const int rmask = 0xff000000; const int gmask = 0x00ff0000; const int bmask = 0x0000ff00; const int amask = 0x000000ff; #else const int rmask = 0x000000ff; const int gmask = 0x0000ff00; const int bmask = 0x00ff0000; const int amask = 0xff000000; #endif width = powerOfTwo(width); height = powerOfTwo(height); return MSDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 32, rmask, gmask, bmask, amask); } #endif