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                                         BOOST_FOREACH(auto& pools, device_pools_)\r
  85                                         {\r
  86                                                 BOOST_FOREACH(auto& pool, pools)\r
  87                                                         pool.second->clear();\r
  88                                         }\r
  89                                         \r
  90                                         // Try again\r
  91                                         buffer.reset(new device_buffer(width, height, stride));\r
  92                                 }\r
  93                                 catch(...)\r
  94                                 {\r
  95                                         CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
  96                                         throw;\r
  97                                 }\r
  98                         }\r
  99 \r
 100                 }, high_priority);      \r
 101         }\r
 102                         \r
 103         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*)\r
 104         {\r
 105                 pool->push(buffer);\r
 106         });\r
 107 }\r
 108         \r
 109 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 110 {\r
 111         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 112         CASPAR_VERIFY(size > 0);\r
 113         auto pool = host_pools_[usage][size];\r
 114         std::shared_ptr<host_buffer> buffer;\r
 115         if(!pool->try_pop(buffer))\r
 116         {\r
 117                 executor_.invoke([&]\r
 118                 {\r
 119                         try\r
 120                         {\r
 121                                 buffer.reset(new host_buffer(size, usage));\r
 122                                 if(usage == host_buffer::write_only)\r
 123                                         buffer->map();\r
 124                                 else\r
 125                                         buffer->unmap();                        \r
 126                         }\r
 127                         catch(...)\r
 128                         {\r
 129                                 try\r
 130                                 {\r
 131                                         yield();\r
 132                                         BOOST_FOREACH(auto& pools, host_pools_)\r
 133                                         {\r
 134                                                 BOOST_FOREACH(auto& pool, pools)\r
 135                                                         pool.second->clear();\r
 136                                         }\r
 137 \r
 138                                         // Try again\r
 139                                         buffer.reset(new host_buffer(size, usage));\r
 140                                         if(usage == host_buffer::write_only)\r
 141                                                 buffer->map();\r
 142                                         else\r
 143                                                 buffer->unmap();        \r
 144                                 }\r
 145                                 catch(...)\r
 146                                 {\r
 147                                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 148                                         throw;          \r
 149                                 }\r
 150                         }\r
 151 \r
 152                 }, high_priority);      \r
 153         }\r
 154         \r
 155         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*)\r
 156         {\r
 157                 executor_.begin_invoke([=]\r
 158                 {\r
 159                         if(usage == host_buffer::write_only)\r
 160                                 buffer->map();\r
 161                         else\r
 162                                 buffer->unmap();\r
 163                         \r
 164                         pool->push(buffer);\r
 165 \r
 166                 }, high_priority);\r
 167         });\r
 168 }\r
 169 \r
 170 void ogl_device::yield()\r
 171 {\r
 172         executor_.yield();\r
 173 }\r
 174 \r
 175 boost::unique_future<void> ogl_device::gc()\r
 176 {       \r
 177         return begin_invoke([=]\r
 178         {\r
 179                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 180         \r
 181                 try\r
 182                 {\r
 183                         BOOST_FOREACH(auto& pools, device_pools_)\r
 184                         {\r
 185                                 BOOST_FOREACH(auto& pool, pools)\r
 186                                         pool.second->clear();\r
 187                         }\r
 188                         BOOST_FOREACH(auto& pools, host_pools_)\r
 189                         {\r
 190                                 BOOST_FOREACH(auto& pool, pools)\r
 191                                         pool.second->clear();\r
 192                         }\r
 193                 }\r
 194                 catch(...)\r
 195                 {\r
 196                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 197                 }\r
 198         }, high_priority);\r
 199 }\r
 200 \r
 201 std::wstring ogl_device::get_version()\r
 202 {       \r
 203         static std::wstring ver = L"Not found";\r
 204         try\r
 205         {\r
 206                 ogl_device tmp;\r
 207                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 208                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                  \r
 209         }\r
 210         catch(...){}\r
 211 \r
 212         return ver;\r
 213 }\r
 214 \r
 215 }}