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                 if(!GLEE_VERSION_3_0)\r
  39                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 3.0 support."));\r
  40 \r
  41                 GL(glGenFramebuffers(1, &fbo_));                \r
  42                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  43                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  44         });\r
  45 }\r
  46 \r
  47 ogl_device::~ogl_device()\r
  48 {\r
  49         invoke([=]\r
  50         {\r
  51                 BOOST_FOREACH(auto& pool, device_pools_)\r
  52                         pool.clear();\r
  53                 BOOST_FOREACH(auto& pool, host_pools_)\r
  54                         pool.clear();\r
  55                 glDeleteFramebuffersEXT(1, &fbo_);\r
  56         });\r
  57 }\r
  58                                 \r
  59 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
  60 {\r
  61         CASPAR_VERIFY(stride > 0 && stride < 5);\r
  62         CASPAR_VERIFY(width > 0 && height > 0);\r
  63         auto pool = &device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
  64         std::shared_ptr<device_buffer> buffer;\r
  65         if(!pool->try_pop(buffer))              \r
  66         {\r
  67                 executor_.invoke([&]\r
  68                 {\r
  69                         try\r
  70                         {\r
  71                                 buffer = std::make_shared<device_buffer>(width, height, stride);\r
  72                         }\r
  73                         catch(...)\r
  74                         {\r
  75                                 BOOST_THROW_EXCEPTION(bad_alloc()\r
  76                                         << errinfo_nested_exception(std::current_exception()));\r
  77                         }\r
  78                 }, high_priority);      \r
  79         }\r
  80                         \r
  81         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*){pool->push(buffer);});\r
  82 }\r
  83         \r
  84 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
  85 {\r
  86         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
  87         CASPAR_VERIFY(size > 0);\r
  88         auto pool = &host_pools_[usage][size];\r
  89         std::shared_ptr<host_buffer> buffer;\r
  90         if(!pool->try_pop(buffer))\r
  91         {\r
  92                 executor_.invoke([&]\r
  93                 {\r
  94                         try\r
  95                         {\r
  96                                 buffer = std::make_shared<host_buffer>(size, usage);\r
  97                                 if(usage == host_buffer::write_only)\r
  98                                         buffer->map();\r
  99                                 else\r
 100                                         buffer->unmap();                        \r
 101                         }\r
 102                         catch(...)\r
 103                         {\r
 104                                 BOOST_THROW_EXCEPTION(bad_alloc()\r
 105                                         << errinfo_nested_exception(std::current_exception()));\r
 106                         }\r
 107 \r
 108                 }, high_priority);      \r
 109         }\r
 110         \r
 111         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*)\r
 112         {\r
 113                 executor_.begin_invoke([=]\r
 114                 {\r
 115                         if(usage == host_buffer::write_only)\r
 116                                 buffer->map();\r
 117                         else\r
 118                                 buffer->unmap();\r
 119                         \r
 120                         pool->push(buffer);\r
 121 \r
 122                 }, high_priority);\r
 123         });\r
 124 }\r
 125 \r
 126 void ogl_device::yield()\r
 127 {\r
 128         executor_.yield();\r
 129 }\r
 130 \r
 131 void ogl_device::gc()\r
 132 {\r
 133         //begin_invoke([=]\r
 134         //{             \r
 135         //      BOOST_FOREACH(auto& pool, device_pools_)\r
 136         //              pool.clear();\r
 137         //      BOOST_FOREACH(auto& pool, host_pools_)\r
 138         //              pool.clear();\r
 139         //});\r
 140 }\r
 141 \r
 142 std::wstring ogl_device::get_version()\r
 143 {       \r
 144         static std::wstring ver;\r
 145         if(ver.empty())\r
 146         {\r
 147                 ogl_device tmp;\r
 148                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 149                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));  \r
 150         }\r
 151         return ver;\r
 152 }\r
 153 \r
 154 }}