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 <Glee.h>\r
  28 #include <SFML/Window.hpp>\r
  29 \r
  30 #include <boost/foreach.hpp>\r
  31 \r
  32 namespace caspar { namespace mixer {\r
  33 \r
  34 ogl_device::ogl_device() : executor_(L"ogl_device", true)\r
  35 {\r
  36         invoke([=]\r
  37         {\r
  38                 context_.reset(new sf::Context());\r
  39                 context_->SetActive(true);\r
  40                                                 \r
  41                 if(!GLEE_VERSION_3_0)\r
  42                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 3.0 support."));\r
  43 \r
  44                 GL(glGenFramebuffers(1, &fbo_));                \r
  45                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  46                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  47         });\r
  48 }\r
  49 \r
  50 ogl_device::~ogl_device()\r
  51 {\r
  52         invoke([=]\r
  53         {\r
  54                 BOOST_FOREACH(auto& pool, device_pools_)\r
  55                         pool.clear();\r
  56                 BOOST_FOREACH(auto& pool, host_pools_)\r
  57                         pool.clear();\r
  58                 glDeleteFramebuffersEXT(1, &fbo_);\r
  59         });\r
  60 }\r
  61                                 \r
  62 safe_ptr<device_buffer> ogl_device::do_create_device_buffer(size_t width, size_t height, size_t stride)\r
  63 {\r
  64         CASPAR_VERIFY(stride > 0 && stride < 5);\r
  65         CASPAR_VERIFY(width > 0 && height > 0);\r
  66         auto pool = &device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
  67         std::shared_ptr<device_buffer> buffer;\r
  68         if(!pool->try_pop(buffer))              \r
  69         {\r
  70                 executor_.invoke([&]\r
  71                 {\r
  72                         buffer = std::make_shared<device_buffer>(width, height, stride);\r
  73                 });     \r
  74                 executor_.begin_invoke([=]\r
  75                 {\r
  76                         auto buffer = std::make_shared<device_buffer>(width, height, stride);\r
  77                         pool->try_push(buffer);\r
  78                 });     \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::do_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                         buffer = std::make_shared<host_buffer>(size, usage);\r
  95                         if(usage == host_buffer::write_only)\r
  96                                 buffer->map();\r
  97                         else\r
  98                                 buffer->unmap();\r
  99                 });     \r
 100                 executor_.begin_invoke([=]\r
 101                 {\r
 102                         auto buffer = std::make_shared<host_buffer>(size, usage);\r
 103                         if(usage == host_buffer::write_only)\r
 104                                 buffer->map();\r
 105                         else\r
 106                                 buffer->unmap();\r
 107                         pool->try_push(buffer);\r
 108                 });     \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                         pool->push(buffer);\r
 120                 });\r
 121         });\r
 122 }\r
 123 \r
 124 std::wstring ogl_device::get_version()\r
 125 {       \r
 126         return widen(invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 127         + " "   + invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));      \r
 128 }\r
 129 \r
 130 }}