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-rw-r--r--src/resources/atlasmanager.cpp302
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diff --git a/src/resources/atlasmanager.cpp b/src/resources/atlasmanager.cpp
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+/*
+ * The ManaPlus Client
+ * Copyright (C) 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 "main.h"
+
+#ifdef USE_OPENGL
+
+#include "resources/atlasmanager.h"
+#include "resources/openglimagehelper.h"
+
+#include "client.h"
+#include "graphics.h"
+#include "graphicsmanager.h"
+#include "logger.h"
+
+#include "utils/mathutils.h"
+#include "utils/physfsrwops.h"
+
+#include "resources/fboinfo.h"
+#include "resources/imagehelper.h"
+#include "resources/imagewriter.h"
+#include "resources/resourcemanager.h"
+
+#include "debug.h"
+
+AtlasManager::AtlasManager()
+{
+}
+
+AtlasResource *AtlasManager::loadTextureAtlas(const std::string &name,
+ const StringVect &files)
+{
+ std::vector<TextureAtlas*> atlases;
+ std::vector<Image*> images;
+ AtlasResource *resource = new AtlasResource;
+
+ loadImages(files, images);
+ int maxSize = OpenGLImageHelper::getTextureSize();
+// int maxSize = 1024;
+
+ // sorting images on atlases.
+ simpleSort(name, atlases, images, maxSize);
+
+ int k = 0;
+ for (std::vector<TextureAtlas*>::iterator it = atlases.begin(),
+ it_end = atlases.end(); it != it_end; ++ it)
+ {
+ TextureAtlas *atlas = *it;
+ if (!atlas)
+ continue;
+
+ // create atlas base on sorted images
+ SDL_Surface *surface = createSDLAtlas(atlas);
+
+ if (!surface)
+ continue;
+
+ // debug save
+ ImageWriter::writePNG(surface, Client::getTempDirectory()
+ + "/atlas" + name + toString(k) + ".png");
+ k ++;
+
+ // covert SDL images to OpenGL
+ convertAtlas(atlas);
+
+ // free SDL atlas surface
+ SDL_FreeSurface(surface);
+
+ resource->atlases.push_back(atlas);
+ }
+
+ return resource;
+}
+
+void AtlasManager::loadImages(const StringVect &files,
+ std::vector<Image*> &images)
+{
+ for (StringVectCIter it = files.begin(), it_end = files.end();
+ it != it_end; ++ it)
+ {
+ const std::string str = *it;
+ SDL_RWops *rw = PHYSFSRWOPS_openRead(str.c_str());
+ Image *image = sdlImageHelper->load(rw);
+ if (image)
+ {
+ image->mIdPath = str;
+ images.push_back(image);
+ }
+ }
+}
+
+void AtlasManager::simpleSort(const std::string &name,
+ std::vector<TextureAtlas*> &atlases,
+ std::vector<Image*> &images, int size)
+{
+ int x = 0;
+ int y = 0;
+ int tempHeight = 0;
+ TextureAtlas *atlas = new TextureAtlas();
+ std::vector<Image*>::iterator it = images.begin();
+ const std::vector<Image*>::const_iterator it_end = images.end();
+ for (it = images.begin(); it != it_end; ++ it)
+ {
+ Image *img = *it;
+ if (img)
+ {
+ atlas->name = "atlas_" + name + "_" + img->getIdPath();
+ break;
+ }
+ }
+
+ for (it = images.begin(); it != it_end; ++ it)
+ {
+ Image *img = *it;
+ if (img)
+ {
+ AtlasItem *item = new AtlasItem(img);
+ item->name = img->getIdPath();
+ // start next line
+ if (x + img->mBounds.w > size)
+ {
+ x = 0;
+ y += tempHeight;
+ tempHeight = 0;
+ }
+
+ // cant put image with this height
+ if (y + img->mBounds.h > size)
+ {
+ x = 0;
+ y = 0;
+ atlases.push_back(atlas);
+ atlas = new TextureAtlas();
+ atlas->name = "atlas_" + name + "_" + img->getIdPath();
+ }
+
+ if (img->mBounds.h > tempHeight)
+ tempHeight = img->mBounds.h;
+
+ logger->log("image draw position: %d,%d (%d,%d)",
+ x, y, img->mBounds.w, img->mBounds.h);
+ item->x = x;
+ item->y = y;
+ atlas->items.push_back(item);
+
+ // continue put textures in line
+ x += img->mBounds.w;
+ if (x > atlas->width)
+ atlas->width = x;
+ if (y + img->mBounds.h > atlas->height)
+ atlas->height = y + img->mBounds.h;
+ }
+ }
+ if (!atlas->items.empty())
+ atlases.push_back(atlas);
+ else
+ delete atlas;
+}
+
+SDL_Surface *AtlasManager::createSDLAtlas(TextureAtlas *atlas)
+{
+#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
+
+ // do not create atlas based on only one image
+ if (atlas->items.size() == 1)
+ return nullptr;
+
+ // using only power of two sizes.
+ atlas->width = powerOfTwo(atlas->width);
+ atlas->height = powerOfTwo(atlas->height);
+
+ // temp SDL surface for atlas
+ SDL_Surface *surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
+ atlas->width, atlas->height, 32, rmask, gmask, bmask, amask);
+
+ if (!surface)
+ return nullptr;
+
+ Graphics *graphics = new Graphics();
+ graphics->setTarget(surface);
+ graphics->_beginDraw();
+
+ // drawing SDL images to surface
+ for (std::vector<AtlasItem*>::iterator it = atlas->items.begin(),
+ it_end = atlas->items.end();
+ it != it_end; ++ it)
+ {
+ AtlasItem *item = *it;
+ Image *image = item->image;
+
+ if (image)
+ {
+ SDL_SetAlpha(image->mSDLSurface, 0, SDL_ALPHA_OPAQUE);
+ graphics->drawImage(image, item->x, item->y);
+ }
+ }
+
+ delete graphics;
+ atlas->surface = surface;
+ return surface;
+}
+
+void AtlasManager::convertAtlas(TextureAtlas *atlas)
+{
+ // convert surface to OpemGL image
+ atlas->atlasImage = imageHelper->load(atlas->surface);
+ Image *const image = atlas->atlasImage;
+
+ for (std::vector<AtlasItem*>::iterator it = atlas->items.begin(),
+ it_end = atlas->items.end();
+ it != it_end; ++ it)
+ {
+ AtlasItem *const item = *it;
+ // delete SDL Image
+ delete item->image;
+ // store OpenGL image
+ item->image = image->getSubImage(item->x, item->y,
+ item->width, item->height);
+ }
+}
+
+void AtlasManager::injectToResources(AtlasResource *resource)
+{
+ ResourceManager *const resman = ResourceManager::getInstance();
+ int k = 0;
+ for (std::vector<TextureAtlas*>::iterator it = resource->atlases.begin(),
+ it_end = resource->atlases.end(); it != it_end; ++ it, k ++)
+ {
+ // add each atlas image to resources
+ TextureAtlas *const atlas = *it;
+ resman->addResource(atlas->name, atlas->atlasImage);
+ if (atlas)
+ {
+ for (std::vector<AtlasItem*>::iterator it2 = atlas->items.begin(),
+ it2_end = atlas->items.end();
+ it2 != it2_end; ++ it2)
+ {
+ AtlasItem *const item = *it2;
+ // add each atlas sub image to resources
+ resman->addResource(item->name, item->image);
+ }
+ }
+ }
+}
+
+AtlasResource::~AtlasResource()
+{
+ for (std::vector<TextureAtlas*>::iterator it = atlases.begin(),
+ it_end = atlases.end(); it != it_end; ++ it)
+ {
+ TextureAtlas *const atlas = *it;
+ if (atlas)
+ {
+ for (std::vector<AtlasItem*>::iterator it2 = atlas->items.begin(),
+ it2_end = atlas->items.end();
+ it2 != it2_end; ++ it2)
+ {
+ AtlasItem *const item = *it2;
+ if (item)
+ {
+ Image *const image = item->image;
+ if (image)
+ image->decRef();
+ delete item;
+ }
+ }
+ Image *const image = atlas->atlasImage;
+ if (image)
+ image->decRef();
+ delete atlas;
+ }
+ }
+}
+
+#endif
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