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         std::fill(blend_func_.begin(), blend_func_.end(), 0);\r
  48         \r
  49         invoke([=]\r
  50         {\r
  51                 context_.reset(new sf::Context());\r
  52                 context_->SetActive(true);\r
  53                 \r
  54                 if (glewInit() != GLEW_OK)\r
  55                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  56                                 \r
  57                 if(!GLEW_VERSION_3_2)\r
  58                         CASPAR_LOG(warning) << "Missing OpenGL 3.2 support.";\r
  59         \r
  60                 GL(glGenFramebuffers(1, &fbo_));                \r
  61                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  62                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  63         GL(glDisable(GL_MULTISAMPLE_ARB));\r
  64         });\r
  65 }\r
  66 \r
  67 ogl_device::~ogl_device()\r
  68 {\r
  69         invoke([=]\r
  70         {\r
  71                 BOOST_FOREACH(auto& pool, device_pools_)\r
  72                         pool.clear();\r
  73                 BOOST_FOREACH(auto& pool, host_pools_)\r
  74                         pool.clear();\r
  75                 glDeleteFramebuffersEXT(1, &fbo_);\r
  76         });\r
  77 }\r
  78                                 \r
  79 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
  80 {\r
  81         CASPAR_VERIFY(stride > 0 && stride < 5);\r
  82         CASPAR_VERIFY(width > 0 && height > 0);\r
  83         auto& pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
  84         std::shared_ptr<device_buffer> buffer;\r
  85         if(!pool->items.try_pop(buffer))                \r
  86         {\r
  87                 executor_.invoke([&]\r
  88                 {       \r
  89                         try\r
  90                         {\r
  91                                 buffer.reset(new device_buffer(width, height, stride));\r
  92                         }\r
  93                         catch(...)\r
  94                         {\r
  95                                 try\r
  96                                 {\r
  97                                         yield();\r
  98                                         gc().wait();\r
  99                                         \r
 100                                         // Try again\r
 101                                         buffer.reset(new device_buffer(width, height, stride));\r
 102                                 }\r
 103                                 catch(...)\r
 104                                 {\r
 105                                         CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
 106                                         throw;\r
 107                                 }\r
 108                         }\r
 109                 }, high_priority);      \r
 110         }\r
 111         \r
 112         ++pool->usage_count;\r
 113 \r
 114         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*) mutable\r
 115         {               \r
 116                 pool->items.push(buffer);       \r
 117         });\r
 118 }\r
 119         \r
 120 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 121 {\r
 122         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 123         CASPAR_VERIFY(size > 0);\r
 124         auto& pool = host_pools_[usage][size];\r
 125         std::shared_ptr<host_buffer> buffer;\r
 126         if(!pool->items.try_pop(buffer))\r
 127         {\r
 128                 executor_.invoke([&]\r
 129                 {\r
 130                         try\r
 131                         {\r
 132                                 buffer.reset(new host_buffer(size, usage));\r
 133                                 if(usage == host_buffer::write_only)\r
 134                                         buffer->map();\r
 135                                 else\r
 136                                         buffer->unmap();                        \r
 137                         }\r
 138                         catch(...)\r
 139                         {\r
 140                                 try\r
 141                                 {\r
 142                                         yield();\r
 143                                         gc().wait();\r
 144 \r
 145                                         // Try again\r
 146                                         buffer.reset(new host_buffer(size, usage));\r
 147                                         if(usage == host_buffer::write_only)\r
 148                                                 buffer->map();\r
 149                                         else\r
 150                                                 buffer->unmap();        \r
 151                                 }\r
 152                                 catch(...)\r
 153                                 {\r
 154                                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 155                                         throw;          \r
 156                                 }\r
 157                         }\r
 158                 }, high_priority);      \r
 159         }\r
 160         \r
 161         ++pool->usage_count;\r
 162 \r
 163         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable\r
 164         {\r
 165                 executor_.begin_invoke([=]() mutable\r
 166                 {               \r
 167                         if(usage == host_buffer::write_only)\r
 168                                 buffer->map();\r
 169                         else\r
 170                                 buffer->unmap();\r
 171 \r
 172                         pool->items.push(buffer);\r
 173                 }, high_priority);      \r
 174         });\r
 175 }\r
 176 \r
 177 template<typename T>\r
 178 void flush_pool(buffer_pool<T>& pool)\r
 179 {       \r
 180         if(pool.flush_count.fetch_and_increment() < 16)\r
 181                 return;\r
 182 \r
 183         if(pool.usage_count.fetch_and_store(0) < pool.items.size())\r
 184         {\r
 185                 std::shared_ptr<T> buffer;\r
 186                 pool.items.try_pop(buffer);\r
 187         }\r
 188 \r
 189         pool.flush_count = 0;\r
 190         pool.usage_count = 0;\r
 191 }\r
 192 \r
 193 void ogl_device::flush()\r
 194 {\r
 195         GL(glFlush());  \r
 196                 \r
 197         try\r
 198         {\r
 199                 BOOST_FOREACH(auto& pools, device_pools_)\r
 200                 {\r
 201                         BOOST_FOREACH(auto& pool, pools)\r
 202                                 flush_pool(*pool.second);\r
 203                 }\r
 204                 BOOST_FOREACH(auto& pools, host_pools_)\r
 205                 {\r
 206                         BOOST_FOREACH(auto& pool, pools)\r
 207                                 flush_pool(*pool.second);\r
 208                 }\r
 209         }\r
 210         catch(...)\r
 211         {\r
 212                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 213         }\r
 214 }\r
 215 \r
 216 void ogl_device::yield()\r
 217 {\r
 218         executor_.yield();\r
 219 }\r
 220 \r
 221 boost::unique_future<void> ogl_device::gc()\r
 222 {       \r
 223         return begin_invoke([=]\r
 224         {\r
 225                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 226         \r
 227                 try\r
 228                 {\r
 229                         BOOST_FOREACH(auto& pools, device_pools_)\r
 230                         {\r
 231                                 BOOST_FOREACH(auto& pool, pools)\r
 232                                         pool.second->items.clear();\r
 233                         }\r
 234                         BOOST_FOREACH(auto& pools, host_pools_)\r
 235                         {\r
 236                                 BOOST_FOREACH(auto& pool, pools)\r
 237                                         pool.second->items.clear();\r
 238                         }\r
 239                 }\r
 240                 catch(...)\r
 241                 {\r
 242                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 243                 }\r
 244         }, high_priority);\r
 245 }\r
 246 \r
 247 std::wstring ogl_device::get_version()\r
 248 {       \r
 249         static std::wstring ver = L"Not found";\r
 250         try\r
 251         {\r
 252                 ogl_device tmp;\r
 253                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 254                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                  \r
 255         }\r
 256         catch(...){}\r
 257 \r
 258         return ver;\r
 259 }\r
 260 \r
 261 \r
 262 void ogl_device::enable(GLenum cap)\r
 263 {\r
 264         auto& val = caps_[cap];\r
 265         if(!val)\r
 266         {\r
 267                 glEnable(cap);\r
 268                 val = true;\r
 269         }\r
 270 }\r
 271 \r
 272 void ogl_device::disable(GLenum cap)\r
 273 {\r
 274         auto& val = caps_[cap];\r
 275         if(val)\r
 276         {\r
 277                 glDisable(cap);\r
 278                 val = false;\r
 279         }\r
 280 }\r
 281 \r
 282 void ogl_device::viewport(size_t x, size_t y, size_t width, size_t height)\r
 283 {\r
 284         if(x != viewport_[0] || y != viewport_[1] || width != viewport_[2] || height != viewport_[3])\r
 285         {               \r
 286                 glViewport(x, y, width, height);\r
 287                 viewport_[0] = x;\r
 288                 viewport_[1] = y;\r
 289                 viewport_[2] = width;\r
 290                 viewport_[3] = height;\r
 291         }\r
 292 }\r
 293 \r
 294 void ogl_device::scissor(size_t x, size_t y, size_t width, size_t height)\r
 295 {\r
 296         if(x != scissor_[0] || y != scissor_[1] || width != scissor_[2] || height != scissor_[3])\r
 297         {               \r
 298                 glScissor(x, y, width, height);\r
 299                 scissor_[0] = x;\r
 300                 scissor_[1] = y;\r
 301                 scissor_[2] = width;\r
 302                 scissor_[3] = height;\r
 303         }\r
 304 }\r
 305 \r
 306 void ogl_device::stipple_pattern(const GLubyte* pattern)\r
 307 {\r
 308         if(pattern_ != pattern)\r
 309         {               \r
 310                 glPolygonStipple(pattern);\r
 311                 pattern_ = pattern;\r
 312         }\r
 313 }\r
 314 \r
 315 void ogl_device::attach(device_buffer& texture)\r
 316 {       \r
 317         if(attached_texture_ != texture.id())\r
 318         {\r
 319                 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));\r
 320                 attached_texture_ = texture.id();\r
 321         }\r
 322 }\r
 323 \r
 324 void ogl_device::clear(device_buffer& texture)\r
 325 {       \r
 326         attach(texture);\r
 327         GL(glClear(GL_COLOR_BUFFER_BIT));\r
 328 }\r
 329 \r
 330 void ogl_device::use(shader& shader)\r
 331 {\r
 332         if(active_shader_ != shader.id())\r
 333         {               \r
 334                 GL(glUseProgramObjectARB(shader.id())); \r
 335                 active_shader_ = shader.id();\r
 336         }\r
 337 }\r
 338 \r
 339 void ogl_device::blend_func_separate(int c1, int c2, int a1, int a2)\r
 340 {\r
 341         std::array<int, 4> func = {c1, c2, a1, a2};\r
 342 \r
 343         if(blend_func_ != func)\r
 344         {\r
 345                 blend_func_ = func;\r
 346                 glBlendFuncSeparate(c1, c2, a1, a2);\r
 347         }\r
 348 }\r
 349 \r
 350 }}\r
 351 \r