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", true)\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::do_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                         buffer = std::make_shared<device_buffer>(width, height, stride);\r
  70                 });     \r
  71                 executor_.begin_invoke([=]\r
  72                 {\r
  73                         auto buffer = std::make_shared<device_buffer>(width, height, stride);\r
  74                         pool->try_push(buffer);\r
  75                 });     \r
  76         }\r
  77                         \r
  78         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*){pool->push(buffer);});\r
  79 }\r
  80         \r
  81 safe_ptr<host_buffer> ogl_device::do_create_host_buffer(size_t size, host_buffer::usage_t usage)\r
  82 {\r
  83         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
  84         CASPAR_VERIFY(size > 0);\r
  85         auto pool = &host_pools_[usage][size];\r
  86         std::shared_ptr<host_buffer> buffer;\r
  87         if(!pool->try_pop(buffer))\r
  88         {\r
  89                 executor_.invoke([&]\r
  90                 {\r
  91                         buffer = std::make_shared<host_buffer>(size, usage);\r
  92                         if(usage == host_buffer::write_only)\r
  93                                 buffer->map();\r
  94                         else\r
  95                                 buffer->unmap();\r
  96                 });     \r
  97                 executor_.begin_invoke([=]\r
  98                 {\r
  99                         auto buffer = std::make_shared<host_buffer>(size, usage);\r
 100                         if(usage == host_buffer::write_only)\r
 101                                 buffer->map();\r
 102                         else\r
 103                                 buffer->unmap();\r
 104                         pool->try_push(buffer);\r
 105                 });     \r
 106         }\r
 107         \r
 108         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*)\r
 109         {\r
 110                 executor_.begin_invoke([=]\r
 111                 {\r
 112                         if(usage == host_buffer::write_only)\r
 113                                 buffer->map();\r
 114                         else\r
 115                                 buffer->unmap();\r
 116                         pool->push(buffer);\r
 117                 });\r
 118         });\r
 119 }\r
 120 \r
 121 std::wstring ogl_device::get_version()\r
 122 {       \r
 123         return widen(invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 124         + " "   + invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));      \r
 125 }\r
 126 \r
 127 }}