mirror of
https://github.com/OpenSpace/OpenSpace.git
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404 lines
13 KiB
C++
404 lines
13 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/globebrowsing/geometry/geodetic2.h>
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#include <modules/globebrowsing/tile/tileprovider.h>
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#include <modules/globebrowsing/tile/tilediskcache.h>
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#include <modules/globebrowsing/tile/tileprovidermanager.h>
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#include <modules/globebrowsing/chunk/chunkindex.h>
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#include <openspace/engine/downloadmanager.h>
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#include <ghoul/io/texture/texturereader.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <ghoul/logging/logmanager.h>
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#include <ghoul/font/fontrenderer.h>
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#include <ghoul/font/fontmanager.h>
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#include <openspace/engine/openspaceengine.h>
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#include <sstream>
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namespace {
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const std::string _loggerCat = "TileProvider";
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}
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namespace openspace {
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const Tile Tile::TileUnavailable = {nullptr, nullptr, Tile::Status::Unavailable };
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Tile Tile::createPlainTile(const glm::uvec2& size, const glm::uvec4& color) {
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using namespace ghoul::opengl;
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// Create pixel data
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int numBytes = size.x * size.y * 4 * 1;
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char* pixels = new char[numBytes];
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size_t numPixels = size.x * size.y;
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size_t i = 0;
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for (size_t p = 0; p < numPixels; p++){
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pixels[i++] = color.r;
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pixels[i++] = color.g;
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pixels[i++] = color.b;
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pixels[i++] = color.a;
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}
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// Create ghoul texture
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auto texture = std::make_shared<Texture>(glm::uvec3(size, 1));
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texture->setDataOwnership(Texture::TakeOwnership::Yes);
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texture->setPixelData(pixels);
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texture->uploadTexture();
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texture->setFilter(ghoul::opengl::Texture::FilterMode::Linear);
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// Create tile
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Tile tile;
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tile.status = Tile::Status::OK;
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tile.preprocessData = nullptr;
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tile.texture = texture;
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return tile;
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// Chunk Index Tile Provider //
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//////////////////////////////////////////////////////////////////////////////////////
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ChunkIndexTileProvider::ChunkIndexTileProvider(const glm::uvec2& textureSize, size_t fontSize)
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: _tileCache(500)
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, _textureSize(textureSize)
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, _fontSize(fontSize)
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{
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using namespace ghoul::fontrendering;
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_font = OsEng.fontManager().font("Mono", _fontSize);
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_fontRenderer = std::unique_ptr<FontRenderer>(FontRenderer::createDefault());
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_fontRenderer->setFramebufferSize(textureSize);
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glGenFramebuffers(1, &_fbo);
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}
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ChunkIndexTileProvider::~ChunkIndexTileProvider() {
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glDeleteFramebuffers(1, &_fbo);
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}
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Tile ChunkIndexTileProvider::getTile(const ChunkIndex& chunkIndex) {
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ChunkHashKey key = chunkIndex.hashKey();
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if (!_tileCache.exist(key)) {
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_tileCache.put(key, createChunkIndexTile(chunkIndex));
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}
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return _tileCache.get(key);
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}
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Tile ChunkIndexTileProvider::getDefaultTile() {
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return Tile::TileUnavailable;
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}
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Tile::Status ChunkIndexTileProvider::getTileStatus(const ChunkIndex& index) {
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return Tile::Status::OK;
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}
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TileDepthTransform ChunkIndexTileProvider::depthTransform() {
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TileDepthTransform transform;
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transform.depthOffset = 0.0f;
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transform.depthScale = 1.0f;
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return transform;
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}
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void ChunkIndexTileProvider::update() {
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// nothing to be done
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}
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void ChunkIndexTileProvider::reset() {
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_tileCache.clear();
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}
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Tile ChunkIndexTileProvider::createChunkIndexTile(const ChunkIndex& chunkIndex) {
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glm::uvec4 color = { 0, 0, 0, 0 };
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Tile tile = Tile::createPlainTile(_textureSize, color);
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// Keep track of defaultFBO and viewport to be able to reset state when done
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GLint defaultFBO;
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GLint viewport[4];
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &defaultFBO);
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glGetIntegerv(GL_VIEWPORT, viewport);
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// Render to texture
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glBindFramebuffer(GL_FRAMEBUFFER, _fbo);
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glFramebufferTexture2D(
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GL_FRAMEBUFFER,
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GL_COLOR_ATTACHMENT0,
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GL_TEXTURE_2D,
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*(tile.texture),
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0
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);
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GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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//LDEBUG(status);
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glViewport(
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0, 0,
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static_cast<GLsizei>(tile.texture->width()),
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static_cast<GLsizei>(tile.texture->height())
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);
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_fontRenderer->render(
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*_font,
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glm::vec2(
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_textureSize.x / 4 - (_textureSize.x / 32) * log10(1 << chunkIndex.level),
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_textureSize.y / 2 + _fontSize),
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glm::vec4(1.0, 0.0, 0.0, 1.0),
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"level: %i \nx: %i \ny: %i",
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chunkIndex.level, chunkIndex.x, chunkIndex.y
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);
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// Reset state: bind default FBO and set viewport to what it was
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glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
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glViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
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return tile;
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}
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int ChunkIndexTileProvider::maxLevel() {
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return 1337; // unlimited
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// Single Image Tile Provider //
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//////////////////////////////////////////////////////////////////////////////////////
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SingleImagePrivoder::SingleImagePrivoder(const std::string& imagePath)
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: _imagePath(imagePath)
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{
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reset();
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}
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Tile SingleImagePrivoder::getTile(const ChunkIndex& chunkIndex) {
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return _tile;
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}
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Tile SingleImagePrivoder::getDefaultTile() {
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return _tile;
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}
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Tile::Status SingleImagePrivoder::getTileStatus(const ChunkIndex& index) {
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return _tile.status;
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}
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TileDepthTransform SingleImagePrivoder::depthTransform() {
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TileDepthTransform transform;
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transform.depthOffset = 0.0f;
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transform.depthScale = 1.0f;
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return transform;
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}
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void SingleImagePrivoder::update() {
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// nothing to be done
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}
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void SingleImagePrivoder::reset() {
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_tile = Tile();
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_tile.texture = std::shared_ptr<Texture>(ghoul::io::TextureReader::ref().loadTexture(_imagePath).release());
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_tile.status = _tile.texture != nullptr ? Tile::Status::OK : Tile::Status::IOError;
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_tile.preprocessData = nullptr;
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_tile.texture->uploadTexture();
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_tile.texture->setFilter(ghoul::opengl::Texture::FilterMode::Linear);
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}
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int SingleImagePrivoder::maxLevel() {
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return 1337; // unlimited
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// Caching Tile Provider //
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//////////////////////////////////////////////////////////////////////////////////////
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CachingTileProvider::CachingTileProvider(std::shared_ptr<AsyncTileDataProvider> tileReader,
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std::shared_ptr<TileCache> tileCache,
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int framesUntilFlushRequestQueue)
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: _asyncTextureDataProvider(tileReader)
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, _tileCache(tileCache)
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, _framesUntilRequestFlush(framesUntilFlushRequestQueue)
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, _framesSinceLastRequestFlush(0)
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{
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}
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CachingTileProvider::~CachingTileProvider(){
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clearRequestQueue();
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}
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void CachingTileProvider::update() {
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initTexturesFromLoadedData();
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if (_framesSinceLastRequestFlush++ > _framesUntilRequestFlush) {
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clearRequestQueue();
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}
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}
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void CachingTileProvider::reset() {
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_tileCache->clear();
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_asyncTextureDataProvider->clearRequestQueue();
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// also clear tiles that has just been finished loading
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while (_asyncTextureDataProvider->hasLoadedTextureData()) {
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_asyncTextureDataProvider->nextTileIOResult(); // get it and throw it away
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}
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}
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int CachingTileProvider::maxLevel() {
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return _asyncTextureDataProvider->getTextureDataProvider()->maxChunkLevel();
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}
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Tile CachingTileProvider::getTile(const ChunkIndex& chunkIndex) {
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Tile tile = Tile::TileUnavailable;
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if (chunkIndex.level > maxLevel()) {
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tile.status = Tile::Status::OutOfRange;
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return tile;
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}
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ChunkHashKey key = chunkIndex.hashKey();
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if (_tileCache->exist(key)) {
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return _tileCache->get(key);
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}
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else {
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_asyncTextureDataProvider->enqueueTextureData(chunkIndex);
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}
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return tile;
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}
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Tile CachingTileProvider::getDefaultTile() {
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if (_defaultTile.texture == nullptr) {
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_defaultTile = createTile(_asyncTextureDataProvider->getTextureDataProvider()->defaultTileData());
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}
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return _defaultTile;
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}
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void CachingTileProvider::initTexturesFromLoadedData() {
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while (_asyncTextureDataProvider->hasLoadedTextureData()) {
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std::shared_ptr<TileIOResult> tileIOResult = _asyncTextureDataProvider->nextTileIOResult();
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ChunkHashKey key = tileIOResult->chunkIndex.hashKey();
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Tile tile = createTile(tileIOResult);
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_tileCache->put(key, tile);
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}
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}
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void CachingTileProvider::clearRequestQueue() {
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_asyncTextureDataProvider->clearRequestQueue();
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_framesSinceLastRequestFlush = 0;
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}
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Tile::Status CachingTileProvider::getTileStatus(const ChunkIndex& chunkIndex) {
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auto tileDataset = _asyncTextureDataProvider->getTextureDataProvider();
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if (chunkIndex.level > tileDataset->maxChunkLevel()) {
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return Tile::Status::OutOfRange;
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}
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ChunkHashKey key = chunkIndex.hashKey();
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if (_tileCache->exist(key)) {
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return _tileCache->get(key).status;
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}
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return Tile::Status::Unavailable;
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}
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Tile CachingTileProvider::getOrStartFetchingTile(ChunkIndex chunkIndex) {
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ChunkHashKey hashkey = chunkIndex.hashKey();
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if (_tileCache->exist(hashkey)) {
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return _tileCache->get(hashkey);
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}
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else {
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_asyncTextureDataProvider->enqueueTextureData(chunkIndex);
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return Tile::TileUnavailable;
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}
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}
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TileDepthTransform CachingTileProvider::depthTransform() {
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return _asyncTextureDataProvider->getTextureDataProvider()->getDepthTransform();
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}
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Tile CachingTileProvider::createTile(std::shared_ptr<TileIOResult> tileIOResult) {
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ChunkHashKey key = tileIOResult->chunkIndex.hashKey();
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TileDataLayout dataLayout = _asyncTextureDataProvider->getTextureDataProvider()->getDataLayout();
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Texture* texturePtr = new Texture(
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tileIOResult->imageData,
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tileIOResult->dimensions,
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dataLayout.textureFormat.ghoulFormat,
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dataLayout.textureFormat.glFormat,
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dataLayout.glType,
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Texture::FilterMode::Linear,
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Texture::WrappingMode::ClampToEdge);
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// The texture should take ownership of the data
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std::shared_ptr<Texture> texture = std::shared_ptr<Texture>(texturePtr);
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texture->uploadTexture();
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// AnisotropicMipMap must be set after texture is uploaded. Why?!
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texture->setFilter(ghoul::opengl::Texture::FilterMode::AnisotropicMipMap);
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Tile tile = {
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texture,
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tileIOResult->preprocessData,
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tileIOResult->error == CE_None ? Tile::Status::OK : Tile::Status::IOError
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};
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return tile;
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}
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} // namespace openspace
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