4 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include "texture_manager.hpp"
26 #include <SDL_image.h>
32 #include "physfs/physfs_sdl.hpp"
33 #include "image_texture.hpp"
35 #include "file_system.hpp"
38 TextureManager* texture_manager = NULL;
40 TextureManager::TextureManager()
44 TextureManager::~TextureManager()
46 for(ImageTextures::iterator i = image_textures.begin();
47 i != image_textures.end(); ++i) {
50 log_warning << "Texture '" << i->first << "' not freed" << std::endl;
56 TextureManager::get(const std::string& _filename)
58 std::string filename = FileSystem::normalize(_filename);
59 ImageTextures::iterator i = image_textures.find(filename);
61 ImageTexture* texture = NULL;
62 if(i != image_textures.end())
66 texture = create_image_texture(filename);
67 image_textures[filename] = texture;
74 TextureManager::release(ImageTexture* texture)
76 image_textures.erase(texture->filename);
81 TextureManager::register_texture(Texture* texture)
83 textures.insert(texture);
87 TextureManager::remove_texture(Texture* texture)
89 textures.erase(texture);
92 static inline int next_power_of_two(int val)
101 TextureManager::create_image_texture(const std::string& filename)
103 SDL_Surface* image = IMG_Load_RW(get_physfs_SDLRWops(filename), 1);
105 std::ostringstream msg;
106 msg << "Couldn't load image '" << filename << "' :" << SDL_GetError();
107 throw std::runtime_error(msg.str());
110 int texture_w = next_power_of_two(image->w);
111 int texture_h = next_power_of_two(image->h);
113 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
114 SDL_Surface* convert = SDL_CreateRGBSurface(SDL_SWSURFACE,
115 texture_w, texture_h, 32,
116 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff);
118 SDL_Surface* convert = SDL_CreateRGBSurface(SDL_SWSURFACE,
119 texture_w, texture_h, 32,
120 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000);
124 throw std::runtime_error("Couldn't create texture: out of memory");
126 SDL_SetAlpha(image, 0, 0);
127 SDL_BlitSurface(image, 0, convert, 0);
129 ImageTexture* result = NULL;
131 result = new ImageTexture(convert);
132 result->filename = filename;
133 result->image_width = image->w;
134 result->image_height = image->h;
137 SDL_FreeSurface(convert);
141 SDL_FreeSurface(convert);
146 TextureManager::save_textures()
148 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
149 glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0);
150 glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
151 glPixelStorei(GL_PACK_SKIP_ROWS, 0);
152 glPixelStorei(GL_PACK_SKIP_IMAGES, 0);
153 glPixelStorei(GL_PACK_ALIGNMENT, 1);
154 for(Textures::iterator i = textures.begin(); i != textures.end(); ++i) {
157 for(ImageTextures::iterator i = image_textures.begin();
158 i != image_textures.end(); ++i) {
159 save_texture(i->second);
164 TextureManager::save_texture(Texture* texture)
166 SavedTexture saved_texture;
167 saved_texture.texture = texture;
168 glBindTexture(GL_TEXTURE_2D, texture->get_handle());
169 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH,
170 &saved_texture.width);
171 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT,
172 &saved_texture.height);
173 glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_BORDER,
174 &saved_texture.border);
175 glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
176 &saved_texture.min_filter);
177 glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
178 &saved_texture.mag_filter);
179 glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
180 &saved_texture.wrap_s);
181 glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
182 &saved_texture.wrap_t);
184 size_t pixelssize = saved_texture.width * saved_texture.height * 4;
185 saved_texture.pixels = new char[pixelssize];
187 glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE,
188 saved_texture.pixels);
190 saved_textures.push_back(saved_texture);
192 glDeleteTextures(1, &(texture->handle));
195 assert_gl("retrieving texture for save");
199 TextureManager::reload_textures()
201 glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
202 glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
203 glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
204 glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
205 glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0);
206 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
208 for(std::vector<SavedTexture>::iterator i = saved_textures.begin();
209 i != saved_textures.end(); ++i) {
210 SavedTexture& saved_texture = *i;
213 glGenTextures(1, &handle);
214 assert_gl("creating texture handle");
216 glBindTexture(GL_TEXTURE_2D, handle);
217 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
218 saved_texture.width, saved_texture.height,
219 saved_texture.border, GL_RGBA,
220 GL_UNSIGNED_BYTE, saved_texture.pixels);
221 delete[] saved_texture.pixels;
222 assert_gl("uploading texture pixel data");
224 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
225 saved_texture.min_filter);
226 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
227 saved_texture.mag_filter);
228 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
229 saved_texture.wrap_s);
230 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
231 saved_texture.wrap_t);
233 assert_gl("setting texture_params");
234 saved_texture.texture->handle = handle;
237 saved_textures.clear();