git.sesse.net Git - casparcg/blob - core/mixer/gpu/ogl_device.cpp

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\r
   5 *\r
   6 *    CasparCG is free software: you can redistribute it and/or modify\r
   7 *    it under the terms of the GNU General Public License as published by\r
   8 *    the Free Software Foundation, either version 3 of the License, or\r
   9 *    (at your option) any later version.\r
  10 *\r
  11 *    CasparCG is distributed in the hope that it will be useful,\r
  12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 *    GNU General Public License for more details.\r
  15 \r
  16 *    You should have received a copy of the GNU General Public License\r
  17 *    along with CasparCG.  If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 */\r
  20 #include "../../stdafx.h"\r
  21 \r
  22 #include "ogl_device.h"\r
  23 \r
  24 #include <common/exception/exceptions.h>\r
  25 #include <common/utility/assert.h>\r
  26 #include <common/gl/gl_check.h>\r
  27 \r
  28 #include <boost/foreach.hpp>\r
  29 \r
  30 #include <gl/glew.h>\r
  31 \r
  32 namespace caspar { namespace core {\r
  33 \r
  34 ogl_device::ogl_device() : executor_(L"ogl_device")\r
  35 {\r
  36         invoke([=]\r
  37         {\r
  38                 context_.reset(new sf::Context());\r
  39                 context_->SetActive(true);\r
  40                 \r
  41                 if (glewInit() != GLEW_OK)\r
  42                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  43                                 \r
  44                 if(!GLEW_VERSION_3_2)\r
  45                         CASPAR_LOG(warning) << "Missing OpenGL 3.2 support.";\r
  46         \r
  47                 GL(glGenFramebuffers(1, &fbo_));                \r
  48                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  49                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  50         });\r
  51 }\r
  52 \r
  53 ogl_device::~ogl_device()\r
  54 {\r
  55         invoke([=]\r
  56         {\r
  57                 BOOST_FOREACH(auto& pool, device_pools_)\r
  58                         pool.clear();\r
  59                 BOOST_FOREACH(auto& pool, host_pools_)\r
  60                         pool.clear();\r
  61                 glDeleteFramebuffersEXT(1, &fbo_);\r
  62         });\r
  63 }\r
  64                                 \r
  65 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
  66 {\r
  67         CASPAR_VERIFY(stride > 0 && stride < 5);\r
  68         CASPAR_VERIFY(width > 0 && height > 0);\r
  69         auto pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
  70         std::shared_ptr<device_buffer> buffer;\r
  71         if(!pool->try_pop(buffer))              \r
  72         {\r
  73                 executor_.invoke([&]\r
  74                 {       \r
  75                         try\r
  76                         {\r
  77                                 buffer.reset(new device_buffer(width, height, stride));\r
  78                         }\r
  79                         catch(...)\r
  80                         {\r
  81                                 try\r
  82                                 {\r
  83                                         yield();\r
  84                                         gc().wait();\r
  85                                         \r
  86                                         // Try again\r
  87                                         buffer.reset(new device_buffer(width, height, stride));\r
  88                                 }\r
  89                                 catch(...)\r
  90                                 {\r
  91                                         CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
  92                                         throw;\r
  93                                 }\r
  94                         }\r
  95 \r
  96                 }, high_priority);      \r
  97         }\r
  98                         \r
  99         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*)\r
 100         {\r
 101                 pool->push(buffer);\r
 102         });\r
 103 }\r
 104         \r
 105 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 106 {\r
 107         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 108         CASPAR_VERIFY(size > 0);\r
 109         auto pool = host_pools_[usage][size];\r
 110         std::shared_ptr<host_buffer> buffer;\r
 111         if(!pool->try_pop(buffer))\r
 112         {\r
 113                 executor_.invoke([&]\r
 114                 {\r
 115                         try\r
 116                         {\r
 117                                 buffer.reset(new host_buffer(size, usage));\r
 118                                 if(usage == host_buffer::write_only)\r
 119                                         buffer->map();\r
 120                                 else\r
 121                                         buffer->unmap();                        \r
 122                         }\r
 123                         catch(...)\r
 124                         {\r
 125                                 try\r
 126                                 {\r
 127                                         yield();\r
 128                                         gc().wait();\r
 129 \r
 130                                         // Try again\r
 131                                         buffer.reset(new host_buffer(size, usage));\r
 132                                         if(usage == host_buffer::write_only)\r
 133                                                 buffer->map();\r
 134                                         else\r
 135                                                 buffer->unmap();        \r
 136                                 }\r
 137                                 catch(...)\r
 138                                 {\r
 139                                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 140                                         throw;          \r
 141                                 }\r
 142                         }\r
 143 \r
 144                 }, high_priority);      \r
 145         }\r
 146         \r
 147         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*)\r
 148         {\r
 149                 executor_.begin_invoke([=]\r
 150                 {\r
 151                         if(usage == host_buffer::write_only)\r
 152                                 buffer->map();\r
 153                         else\r
 154                                 buffer->unmap();\r
 155                         \r
 156                         pool->push(buffer);\r
 157 \r
 158                 }, high_priority);\r
 159         });\r
 160 }\r
 161 \r
 162 void ogl_device::yield()\r
 163 {\r
 164         executor_.yield();\r
 165 }\r
 166 \r
 167 boost::unique_future<void> ogl_device::gc()\r
 168 {       \r
 169         return begin_invoke([=]\r
 170         {\r
 171                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 172         \r
 173                 try\r
 174                 {\r
 175                         BOOST_FOREACH(auto& pools, device_pools_)\r
 176                         {\r
 177                                 BOOST_FOREACH(auto& pool, pools)\r
 178                                         pool.second->clear();\r
 179                         }\r
 180                         BOOST_FOREACH(auto& pools, host_pools_)\r
 181                         {\r
 182                                 BOOST_FOREACH(auto& pool, pools)\r
 183                                         pool.second->clear();\r
 184                         }\r
 185                 }\r
 186                 catch(...)\r
 187                 {\r
 188                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 189                 }\r
 190         }, high_priority);\r
 191 }\r
 192 \r
 193 std::wstring ogl_device::get_version()\r
 194 {       \r
 195         static std::wstring ver = L"Not found";\r
 196         try\r
 197         {\r
 198                 ogl_device tmp;\r
 199                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 200                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                  \r
 201         }\r
 202         catch(...){}\r
 203 \r
 204         return ver;\r
 205 }\r
 206 \r
 207 }}