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Diffstat (limited to 'src/resources/safeopenglimagehelper.h')
| -rw-r--r-- | src/resources/safeopenglimagehelper.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/resources/safeopenglimagehelper.h b/src/resources/safeopenglimagehelper.h new file mode 100644 index 000000000..14de03913 --- /dev/null +++ b/src/resources/safeopenglimagehelper.h @@ -0,0 +1,159 @@ +/* + * The ManaPlus Client + * Copyright (C) 2004-2009 The Mana World Development Team + * Copyright (C) 2009-2010 The Mana Developers + * Copyright (C) 2011-2015 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/>. + */ + +#ifndef RESOURCES_SAFEOPENGLIMAGEHELPER_H +#define RESOURCES_SAFEOPENGLIMAGEHELPER_H + +#include "localconsts.h" +#include "main.h" + +#ifdef USE_OPENGL + +#ifndef GL_TEXTURE_RECTANGLE_ARB +#define GL_TEXTURE_RECTANGLE_ARB 0x84F5 +#define GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB 0x84F8 +#endif + +#include "resources/imagehelper.h" + +#ifdef ANDROID +#include <GLES/gl.h> +#define GL_RGBA8 GL_RGBA8_OES +#else +#ifndef USE_SDL2 +#define GL_GLEXT_PROTOTYPES 1 +#endif +#include <SDL_opengl.h> +#endif + +class Dye; +class Image; + +/** + * Defines a class for loading and storing images. + */ +class SafeOpenGLImageHelper final : public ImageHelper +{ + friend class CompoundSprite; + friend class Graphics; + friend class Image; + + public: + SafeOpenGLImageHelper() : + mFreeTextureIndex(0) + { + } + + A_DELETE_COPY(SafeOpenGLImageHelper) + + ~SafeOpenGLImageHelper(); + + /** + * 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 *load(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() A_WARN_UNUSED + { return mTextureType; } + + static int getInternalTextureType() A_WARN_UNUSED + { return mInternalTextureType; } + + static void setInternalTextureType(const int n) + { mInternalTextureType = n; } + + static void setBlur(const bool n) + { mBlur = n; } + + static int mTextureType; + + static int mInternalTextureType; + + static int getTextureSize() A_WARN_UNUSED + { return mTextureSize; } + + static void initTextureSampler(const GLint id); + + static void setUseTextureSampler(const bool b) + { 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 +#endif // RESOURCES_SAFEOPENGLIMAGEHELPER_H |