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 // TODO: Smart GC\r
  21 \r
  22 #include "../../stdafx.h"\r
  23 \r
  24 #include "ogl_device.h"\r
  25 \r
  26 #include "shader.h"\r
  27 \r
  28 #include <common/exception/exceptions.h>\r
  29 #include <common/utility/assert.h>\r
  30 #include <common/gl/gl_check.h>\r
  31 \r
  32 #include <boost/foreach.hpp>\r
  33 \r
  34 #include <gl/glew.h>\r
  35 \r
  36 namespace caspar { namespace core {\r
  37 \r
  38 ogl_device::ogl_device() \r
  39         : executor_(L"ogl_device")\r
  40         , pattern_(nullptr)\r
  41         , attached_texture_(0)\r
  42         , active_shader_(0)\r
  43 {\r
  44         std::fill(binded_textures_.begin(), binded_textures_.end(), 0);\r
  45         std::fill(viewport_.begin(), viewport_.end(), 0);\r
  46         std::fill(scissor_.begin(), scissor_.end(), 0);\r
  47         \r
  48         invoke([=]\r
  49         {\r
  50                 context_.reset(new sf::Context());\r
  51                 context_->SetActive(true);\r
  52                 \r
  53                 if (glewInit() != GLEW_OK)\r
  54                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  55                                 \r
  56                 if(!GLEW_VERSION_3_2)\r
  57                         CASPAR_LOG(warning) << "Missing OpenGL 3.2 support.";\r
  58         \r
  59                 GL(glGenFramebuffers(1, &fbo_));                \r
  60                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  61                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  62         GL(glDisable(GL_MULTISAMPLE_ARB));\r
  63         });\r
  64 }\r
  65 \r
  66 ogl_device::~ogl_device()\r
  67 {\r
  68         invoke([=]\r
  69         {\r
  70                 BOOST_FOREACH(auto& pool, device_pools_)\r
  71                         pool.clear();\r
  72                 BOOST_FOREACH(auto& pool, host_pools_)\r
  73                         pool.clear();\r
  74                 glDeleteFramebuffersEXT(1, &fbo_);\r
  75         });\r
  76 }\r
  77                                 \r
  78 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
  79 {\r
  80         CASPAR_VERIFY(stride > 0 && stride < 5);\r
  81         CASPAR_VERIFY(width > 0 && height > 0);\r
  82         auto& pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
  83         std::shared_ptr<device_buffer> buffer;\r
  84         if(!pool->items.try_pop(buffer))                \r
  85         {\r
  86                 executor_.invoke([&]\r
  87                 {       \r
  88                         try\r
  89                         {\r
  90                                 buffer.reset(new device_buffer(width, height, stride));\r
  91                         }\r
  92                         catch(...)\r
  93                         {\r
  94                                 try\r
  95                                 {\r
  96                                         yield();\r
  97                                         gc().wait();\r
  98                                         \r
  99                                         // Try again\r
 100                                         buffer.reset(new device_buffer(width, height, stride));\r
 101                                 }\r
 102                                 catch(...)\r
 103                                 {\r
 104                                         CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
 105                                         throw;\r
 106                                 }\r
 107                         }\r
 108                 }, high_priority);      \r
 109         }\r
 110         \r
 111         ++pool->usage_count;\r
 112 \r
 113         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*) mutable\r
 114         {               \r
 115                 pool->items.push(buffer);       \r
 116         });\r
 117 }\r
 118         \r
 119 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 120 {\r
 121         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 122         CASPAR_VERIFY(size > 0);\r
 123         auto& pool = host_pools_[usage][size];\r
 124         std::shared_ptr<host_buffer> buffer;\r
 125         if(!pool->items.try_pop(buffer))\r
 126         {\r
 127                 executor_.invoke([&]\r
 128                 {\r
 129                         try\r
 130                         {\r
 131                                 buffer.reset(new host_buffer(size, usage));\r
 132                                 if(usage == host_buffer::write_only)\r
 133                                         buffer->map();\r
 134                                 else\r
 135                                         buffer->unmap();                        \r
 136                         }\r
 137                         catch(...)\r
 138                         {\r
 139                                 try\r
 140                                 {\r
 141                                         yield();\r
 142                                         gc().wait();\r
 143 \r
 144                                         // Try again\r
 145                                         buffer.reset(new host_buffer(size, usage));\r
 146                                         if(usage == host_buffer::write_only)\r
 147                                                 buffer->map();\r
 148                                         else\r
 149                                                 buffer->unmap();        \r
 150                                 }\r
 151                                 catch(...)\r
 152                                 {\r
 153                                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 154                                         throw;          \r
 155                                 }\r
 156                         }\r
 157                 }, high_priority);      \r
 158         }\r
 159         \r
 160         ++pool->usage_count;\r
 161 \r
 162         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable\r
 163         {\r
 164                 executor_.begin_invoke([=]() mutable\r
 165                 {               \r
 166                         if(usage == host_buffer::write_only)\r
 167                                 buffer->map();\r
 168                         else\r
 169                                 buffer->unmap();\r
 170 \r
 171                         pool->items.push(buffer);\r
 172                 }, high_priority);      \r
 173         });\r
 174 }\r
 175 \r
 176 template<typename T>\r
 177 void flush_pool(buffer_pool<T>& pool)\r
 178 {       \r
 179         if(pool.flush_count.fetch_and_increment() < 16)\r
 180                 return;\r
 181 \r
 182         if(pool.usage_count.fetch_and_store(0) < pool.items.size())\r
 183         {\r
 184                 std::shared_ptr<T> buffer;\r
 185                 pool.items.try_pop(buffer);\r
 186         }\r
 187 \r
 188         pool.flush_count = 0;\r
 189         pool.usage_count = 0;\r
 190 }\r
 191 \r
 192 void ogl_device::flush()\r
 193 {\r
 194         GL(glFlush());  \r
 195                 \r
 196         try\r
 197         {\r
 198                 BOOST_FOREACH(auto& pools, device_pools_)\r
 199                 {\r
 200                         BOOST_FOREACH(auto& pool, pools)\r
 201                                 flush_pool(*pool.second);\r
 202                 }\r
 203                 BOOST_FOREACH(auto& pools, host_pools_)\r
 204                 {\r
 205                         BOOST_FOREACH(auto& pool, pools)\r
 206                                 flush_pool(*pool.second);\r
 207                 }\r
 208         }\r
 209         catch(...)\r
 210         {\r
 211                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 212         }\r
 213 }\r
 214 \r
 215 void ogl_device::yield()\r
 216 {\r
 217         executor_.yield();\r
 218 }\r
 219 \r
 220 boost::unique_future<void> ogl_device::gc()\r
 221 {       \r
 222         return begin_invoke([=]\r
 223         {\r
 224                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 225         \r
 226                 try\r
 227                 {\r
 228                         BOOST_FOREACH(auto& pools, device_pools_)\r
 229                         {\r
 230                                 BOOST_FOREACH(auto& pool, pools)\r
 231                                         pool.second->items.clear();\r
 232                         }\r
 233                         BOOST_FOREACH(auto& pools, host_pools_)\r
 234                         {\r
 235                                 BOOST_FOREACH(auto& pool, pools)\r
 236                                         pool.second->items.clear();\r
 237                         }\r
 238                 }\r
 239                 catch(...)\r
 240                 {\r
 241                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 242                 }\r
 243         }, high_priority);\r
 244 }\r
 245 \r
 246 std::wstring ogl_device::get_version()\r
 247 {       \r
 248         static std::wstring ver = L"Not found";\r
 249         try\r
 250         {\r
 251                 ogl_device tmp;\r
 252                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 253                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                  \r
 254         }\r
 255         catch(...){}\r
 256 \r
 257         return ver;\r
 258 }\r
 259 \r
 260 \r
 261 void ogl_device::enable(GLenum cap)\r
 262 {\r
 263         auto& val = caps_[cap];\r
 264         if(!val)\r
 265         {\r
 266                 glEnable(cap);\r
 267                 val = true;\r
 268         }\r
 269 }\r
 270 \r
 271 void ogl_device::disable(GLenum cap)\r
 272 {\r
 273         auto& val = caps_[cap];\r
 274         if(val)\r
 275         {\r
 276                 glDisable(cap);\r
 277                 val = false;\r
 278         }\r
 279 }\r
 280 \r
 281 void ogl_device::viewport(size_t x, size_t y, size_t width, size_t height)\r
 282 {\r
 283         if(x != viewport_[0] || y != viewport_[1] || width != viewport_[2] || height != viewport_[3])\r
 284         {               \r
 285                 glViewport(x, y, width, height);\r
 286                 viewport_[0] = x;\r
 287                 viewport_[1] = y;\r
 288                 viewport_[2] = width;\r
 289                 viewport_[3] = height;\r
 290         }\r
 291 }\r
 292 \r
 293 void ogl_device::scissor(size_t x, size_t y, size_t width, size_t height)\r
 294 {\r
 295         if(x != scissor_[0] || y != scissor_[1] || width != scissor_[2] || height != scissor_[3])\r
 296         {               \r
 297                 glScissor(x, y, width, height);\r
 298                 scissor_[0] = x;\r
 299                 scissor_[1] = y;\r
 300                 scissor_[2] = width;\r
 301                 scissor_[3] = height;\r
 302         }\r
 303 }\r
 304 \r
 305 void ogl_device::stipple_pattern(const GLubyte* pattern)\r
 306 {\r
 307         if(pattern_ != pattern)\r
 308         {               \r
 309                 glPolygonStipple(pattern);\r
 310                 pattern_ = pattern;\r
 311         }\r
 312 }\r
 313 \r
 314 void ogl_device::attach(device_buffer& texture)\r
 315 {       \r
 316         if(attached_texture_ != texture.id())\r
 317         {\r
 318                 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));\r
 319                 attached_texture_ = texture.id();\r
 320         }\r
 321 }\r
 322 \r
 323 void ogl_device::clear(device_buffer& texture)\r
 324 {       \r
 325         attach(texture);\r
 326         GL(glClear(GL_COLOR_BUFFER_BIT));\r
 327 }\r
 328 \r
 329 void ogl_device::use(shader& shader)\r
 330 {\r
 331         if(active_shader_ != shader.id())\r
 332         {               \r
 333                 GL(glUseProgramObjectARB(shader.id())); \r
 334                 active_shader_ = shader.id();\r
 335         }\r
 336 }\r
 337 \r
 338 }}\r
 339 \r