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/utility/assert.h>\r
  25 #include <common/gl/gl_check.h>\r
  26 \r
  27 #include <boost/foreach.hpp>\r
  28 \r
  29 namespace caspar { namespace core {\r
  30 \r
  31 ogl_device::ogl_device() : executor_(L"ogl_device")\r
  32 {\r
  33         invoke([=]\r
  34         {\r
  35                 context_.reset(new sf::Context());\r
  36                 context_->SetActive(true);\r
  37                                                 \r
  38                 GL(glGenFramebuffers(1, &fbo_));                \r
  39                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  40                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  41         });\r
  42 }\r
  43 \r
  44 ogl_device::~ogl_device()\r
  45 {\r
  46         invoke([=]\r
  47         {\r
  48                 BOOST_FOREACH(auto& pool, device_pools_)\r
  49                         pool.clear();\r
  50                 BOOST_FOREACH(auto& pool, host_pools_)\r
  51                         pool.clear();\r
  52                 glDeleteFramebuffersEXT(1, &fbo_);\r
  53         });\r
  54 }\r
  55                                 \r
  56 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
  57 {\r
  58         CASPAR_VERIFY(stride > 0 && stride < 5);\r
  59         CASPAR_VERIFY(width > 0 && height > 0);\r
  60         auto pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
  61         std::shared_ptr<device_buffer> buffer;\r
  62         if(!pool->try_pop(buffer))              \r
  63         {\r
  64                 executor_.invoke([&]\r
  65                 {       \r
  66                         try\r
  67                         {\r
  68                                 buffer = std::make_shared<device_buffer>(width, height, stride);\r
  69                         }\r
  70                         catch(...)\r
  71                         {\r
  72                                 CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
  73                                 throw;\r
  74                         }\r
  75 \r
  76                 }, high_priority);      \r
  77         }\r
  78                         \r
  79         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*)\r
  80         {\r
  81                 executor_.begin_invoke([=] // Execute in ogl context in order to guarantee destruction of buffer in ogl context.\r
  82                 {\r
  83                         pool->push(buffer);\r
  84 \r
  85                 }, high_priority);\r
  86         });\r
  87 }\r
  88         \r
  89 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
  90 {\r
  91         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
  92         CASPAR_VERIFY(size > 0);\r
  93         auto pool = host_pools_[usage][size];\r
  94         std::shared_ptr<host_buffer> buffer;\r
  95         if(!pool->try_pop(buffer))\r
  96         {\r
  97                 executor_.invoke([&]\r
  98                 {\r
  99                         try\r
 100                         {\r
 101                                 buffer = std::make_shared<host_buffer>(size, usage);\r
 102                                 if(usage == host_buffer::write_only)\r
 103                                         buffer->map();\r
 104                                 else\r
 105                                         buffer->unmap();                        \r
 106                         }\r
 107                         catch(...)\r
 108                         {\r
 109                                 CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 110                                 throw;                          \r
 111                         }\r
 112 \r
 113                 }, high_priority);      \r
 114         }\r
 115         \r
 116         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*)\r
 117         {\r
 118                 executor_.begin_invoke([=]\r
 119                 {\r
 120                         if(usage == host_buffer::write_only)\r
 121                                 buffer->map();\r
 122                         else\r
 123                                 buffer->unmap();\r
 124                         \r
 125                         pool->push(buffer);\r
 126 \r
 127                 }, high_priority);\r
 128         });\r
 129 }\r
 130 \r
 131 void ogl_device::yield()\r
 132 {\r
 133         executor_.yield();\r
 134 }\r
 135 \r
 136 boost::unique_future<void> ogl_device::gc()\r
 137 {\r
 138         CASPAR_LOG(info) << " ogl: Running GC.";\r
 139 \r
 140         return begin_invoke([=]\r
 141         {               \r
 142                 try\r
 143                 {\r
 144                         BOOST_FOREACH(auto& pool, device_pools_)\r
 145                                 pool.clear();\r
 146                         BOOST_FOREACH(auto& pool, host_pools_)\r
 147                                 pool.clear();\r
 148                 }\r
 149                 catch(...)\r
 150                 {\r
 151                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 152                 }\r
 153         }, high_priority);\r
 154 }\r
 155 \r
 156 std::wstring ogl_device::get_version()\r
 157 {       \r
 158         static std::wstring ver;\r
 159         if(ver.empty())\r
 160         {\r
 161                 ogl_device tmp;\r
 162                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 163                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));  \r
 164         }\r
 165         return ver;\r
 166 }\r
 167 \r
 168 }}