git.sesse.net Git - casparcg/blob - accelerator/ogl/util/device.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 // TODO: Smart GC\r
  23 \r
  24 #include "../../stdafx.h"\r
  25 \r
  26 #include "device.h"\r
  27 \r
  28 #include "buffer.h"\r
  29 #include "texture.h"\r
  30 #include "shader.h"\r
  31 \r
  32 #include <common/assert.h>\r
  33 #include <common/except.h>\r
  34 #include <common/concurrency/async.h>\r
  35 #include <common/memory/array.h>\r
  36 #include <common/gl/gl_check.h>\r
  37 #include <common/os/windows/windows.h>\r
  38 \r
  39 \r
  40 #include <boost/foreach.hpp>\r
  41 \r
  42 #include <gl/glew.h>\r
  43 \r
  44 #include <SFML/Window/Context.hpp>\r
  45 \r
  46 #include <tbb/concurrent_unordered_map.h>\r
  47 #include <tbb/concurrent_hash_map.h>\r
  48 #include <tbb/concurrent_queue.h>\r
  49 \r
  50 #include <boost/utility/declval.hpp>\r
  51 \r
  52 #include <array>\r
  53 #include <unordered_map>\r
  54 \r
  55 tbb::atomic<int> g_count = tbb::atomic<int>();\r
  56 \r
  57 namespace caspar { namespace accelerator { namespace ogl {\r
  58                 \r
  59 struct device::impl : public std::enable_shared_from_this<impl>\r
  60 {       \r
  61         static_assert(std::is_same<decltype(boost::declval<device>().impl_), spl::shared_ptr<impl>>::value, "impl_ must be shared_ptr");\r
  62 \r
  63         tbb::concurrent_hash_map<buffer*, std::shared_ptr<texture>> texture_mapping_;\r
  64 \r
  65         std::unique_ptr<sf::Context> device_;\r
  66         std::unique_ptr<sf::Context> host_alloc_device_;\r
  67         \r
  68         std::array<tbb::concurrent_unordered_map<int, tbb::concurrent_bounded_queue<std::shared_ptr<texture>>>, 4>      device_pools_;\r
  69         std::array<tbb::concurrent_unordered_map<int, tbb::concurrent_bounded_queue<std::shared_ptr<buffer>>>, 2>       host_pools_;\r
  70         \r
  71         GLuint fbo_;\r
  72 \r
  73         executor& render_executor_;\r
  74         executor  alloc_executor_;\r
  75                                 \r
  76         impl(executor& executor) \r
  77                 : render_executor_(executor)\r
  78                 , alloc_executor_(L"OpenGL allocation context.")\r
  79         {\r
  80                 if(g_count++ > 1)\r
  81                         CASPAR_LOG(warning) << L"Multiple OGL devices.";\r
  82 \r
  83                 CASPAR_LOG(info) << L"Initializing OpenGL Device.";\r
  84                 \r
  85                 auto ctx1 = render_executor_.invoke([=]() -> HGLRC \r
  86                 {\r
  87                         device_.reset(new sf::Context());\r
  88                         device_->SetActive(true);               \r
  89                                                 \r
  90                         if (glewInit() != GLEW_OK)\r
  91                                 BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  92                 \r
  93                         if(!GLEW_VERSION_3_0)\r
  94                                 BOOST_THROW_EXCEPTION(not_supported() << msg_info("Your graphics card does not meet the minimum hardware requirements since it does not support OpenGL 3.0 or higher."));\r
  95         \r
  96                         glGenFramebuffers(1, &fbo_);                            \r
  97                         glBindFramebuffer(GL_FRAMEBUFFER, fbo_);\r
  98                         \r
  99                         auto ctx1 = wglGetCurrentContext();\r
 100                         \r
 101                         device_->SetActive(false);\r
 102 \r
 103                         return ctx1;\r
 104                 });\r
 105 \r
 106                 alloc_executor_.invoke([=]\r
 107                 {\r
 108                         host_alloc_device_.reset(new sf::Context());\r
 109                         host_alloc_device_->SetActive(true);    \r
 110                         auto ctx2 = wglGetCurrentContext();\r
 111 \r
 112                         if(!wglShareLists(ctx1, ctx2))\r
 113                                 BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to share OpenGL devices."));\r
 114                 });\r
 115 \r
 116                 render_executor_.invoke([=]\r
 117                 {               \r
 118                         device_->SetActive(true);\r
 119                 });\r
 120                 \r
 121                 CASPAR_LOG(info) << L"Successfully initialized OpenGL " << version();\r
 122         }\r
 123 \r
 124         ~impl()\r
 125         {\r
 126                 alloc_executor_.invoke([=]\r
 127                 {\r
 128                         host_alloc_device_.reset();\r
 129                         BOOST_FOREACH(auto& pool, host_pools_)\r
 130                                 pool.clear();\r
 131                 });\r
 132 \r
 133                 render_executor_.invoke([=]\r
 134                 {\r
 135                         BOOST_FOREACH(auto& pool, device_pools_)\r
 136                                 pool.clear();\r
 137                         glDeleteFramebuffers(1, &fbo_);\r
 138 \r
 139                         device_.reset();\r
 140                 });\r
 141         }\r
 142                 \r
 143         std::wstring version()\r
 144         {       \r
 145                 try\r
 146                 {\r
 147                         return alloc_executor_.invoke([]\r
 148                         {\r
 149                                 return u16(reinterpret_cast<const char*>(GL2(glGetString(GL_VERSION)))) + L" " + u16(reinterpret_cast<const char*>(GL2(glGetString(GL_VENDOR))));\r
 150                         });     \r
 151                 }\r
 152                 catch(...)\r
 153                 {\r
 154                         return L"Not found";;\r
 155                 }\r
 156         }\r
 157                                                         \r
 158         spl::shared_ptr<texture> create_texture(int width, int height, int stride)\r
 159         {\r
 160                 CASPAR_VERIFY(stride > 0 && stride < 5);\r
 161                 CASPAR_VERIFY(width > 0 && height > 0);\r
 162                 \r
 163                 auto pool = &device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
 164                 \r
 165                 std::shared_ptr<texture> buffer;\r
 166                 if(!pool->try_pop(buffer))              \r
 167                         buffer = spl::make_shared<texture>(width, height, stride);\r
 168         \r
 169                 return spl::shared_ptr<texture>(buffer.get(), [buffer, pool](texture*) mutable\r
 170                 {               \r
 171                         pool->push(buffer);     \r
 172                 });\r
 173         }\r
 174                 \r
 175         spl::shared_ptr<buffer> create_buffer(int size, buffer::usage usage)\r
 176         {\r
 177                 CASPAR_VERIFY(size > 0);\r
 178                 \r
 179                 auto pool = &host_pools_[usage.value()][size];\r
 180                 \r
 181                 std::shared_ptr<buffer> buf;\r
 182                 if(!pool->try_pop(buf)) \r
 183                 {\r
 184                         buf = alloc_executor_.invoke([&]\r
 185                         {\r
 186                                 return spl::make_shared<buffer>(size, usage);\r
 187                         });\r
 188                 }\r
 189                                 \r
 190                 auto ptr = buf->data();\r
 191                 auto self = shared_from_this(); // buffers can leave the device context, take a hold on life-time.\r
 192 \r
 193                 auto on_release = [self, buf, ptr, usage, pool]() mutable\r
 194                 {               \r
 195                         if(usage == buffer::usage::write_only)                                  \r
 196                                 buf->map();                                     \r
 197                         else\r
 198                                 buf->unmap();\r
 199 \r
 200                         self->texture_mapping_.erase(buf.get());\r
 201 \r
 202                         pool->push(buf);\r
 203                 };\r
 204                 \r
 205                 return spl::shared_ptr<buffer>(buf.get(), [=](buffer*) mutable\r
 206                 {\r
 207                         self->alloc_executor_.begin_invoke(on_release); \r
 208                 });\r
 209         }\r
 210 \r
 211         core::mutable_array create_array(int size)\r
 212         {               \r
 213                 auto buf = create_buffer(size, buffer::usage::write_only);\r
 214                 return core::mutable_array(buf->data(), buf->size(), false, buf);\r
 215         }\r
 216 \r
 217         boost::unique_future<spl::shared_ptr<texture>> copy_async(const core::const_array& source, int width, int height, int stride)\r
 218         {\r
 219                 auto buf = source.storage<spl::shared_ptr<buffer>>();\r
 220                                 \r
 221                 return render_executor_.begin_invoke([=]() -> spl::shared_ptr<texture>\r
 222                 {\r
 223                         tbb::concurrent_hash_map<buffer*, std::shared_ptr<texture>>::const_accessor a;\r
 224                         if(texture_mapping_.find(a, buf.get()))\r
 225                                 return spl::make_shared_ptr(a->second);\r
 226 \r
 227                         auto texture = create_texture(width, height, stride);\r
 228                         texture->copy_from(*buf);       \r
 229 \r
 230                         texture_mapping_.insert(std::make_pair(buf.get(), texture));\r
 231 \r
 232                         return texture;\r
 233 \r
 234                 }, task_priority::high_priority);\r
 235         }\r
 236 \r
 237         boost::unique_future<core::const_array> copy_async(const spl::shared_ptr<texture>& source)\r
 238         {\r
 239                 return flatten(render_executor_.begin_invoke([=]() -> boost::shared_future<core::const_array>\r
 240                 {\r
 241                         auto buffer = create_buffer(source->size(), buffer::usage::read_only); \r
 242                         source->copy_to(*buffer);       \r
 243 \r
 244                         return make_shared(async(launch::deferred, [=]() mutable -> core::const_array\r
 245                         {\r
 246                                 const auto& buf = buffer.get();\r
 247                                 if(!buf->data())\r
 248                                         alloc_executor_.invoke(std::bind(&buffer::map, std::ref(buf))); // Defer blocking "map" call until data is needed.\r
 249 \r
 250                                 return core::const_array(buf->data(), buf->size(), true, buffer);\r
 251                         }));\r
 252                 }, task_priority::high_priority));\r
 253         }\r
 254 };\r
 255 \r
 256 device::device() \r
 257         : executor_(L"OpenGL Rendering Context.")\r
 258         , impl_(new impl(executor_))\r
 259 {\r
 260 }\r
 261 device::~device(){}     \r
 262 spl::shared_ptr<texture>                                                        device::create_texture(int width, int height, int stride){return impl_->create_texture(width, height, stride);}\r
 263 core::mutable_array                                                                     device::create_array(int size){return impl_->create_array(size);}\r
 264 boost::unique_future<spl::shared_ptr<texture>>          device::copy_async(const core::const_array& source, int width, int height, int stride){return impl_->copy_async(source, width, height, stride);}\r
 265 boost::unique_future<core::const_array>                         device::copy_async(const spl::shared_ptr<texture>& source){return impl_->copy_async(source);}\r
 266 std::wstring                                                                            device::version(){return impl_->version();}\r
 267 \r
 268 \r
 269 }}}\r
 270 \r
 271 \r