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         CASPAR_LOG(info) << L"Initializing OpenGL Device.";\r
  45 \r
  46         std::fill(binded_textures_.begin(), binded_textures_.end(), 0);\r
  47         std::fill(viewport_.begin(), viewport_.end(), 0);\r
  48         std::fill(scissor_.begin(), scissor_.end(), 0);\r
  49         std::fill(blend_func_.begin(), blend_func_.end(), 0);\r
  50         \r
  51         invoke([=]\r
  52         {\r
  53                 context_.reset(new sf::Context());\r
  54                 context_->SetActive(true);\r
  55                 \r
  56                 if (glewInit() != GLEW_OK)\r
  57                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  58                                                 \r
  59                 CASPAR_LOG(info) << L"OpenGL " << version();\r
  60 \r
  61                 if(!GLEW_VERSION_3_0)\r
  62                         CASPAR_LOG(warning) << "Missing OpenGL 3.0 support.";\r
  63         \r
  64                 CASPAR_LOG(info) << L"Successfully initialized GLEW.";\r
  65 \r
  66                 GL(glGenFramebuffers(1, &fbo_));                \r
  67                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  68                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  69         //GL(glDisable(GL_MULTISAMPLE_ARB));\r
  70 \r
  71                 CASPAR_LOG(info) << L"Successfully initialized OpenGL Device.";\r
  72         });\r
  73 }\r
  74 \r
  75 ogl_device::~ogl_device()\r
  76 {\r
  77         invoke([=]\r
  78         {\r
  79                 BOOST_FOREACH(auto& pool, device_pools_)\r
  80                         pool.clear();\r
  81                 BOOST_FOREACH(auto& pool, host_pools_)\r
  82                         pool.clear();\r
  83                 glDeleteFramebuffersEXT(1, &fbo_);\r
  84         });\r
  85 }\r
  86 \r
  87 safe_ptr<device_buffer> ogl_device::allocate_device_buffer(size_t width, size_t height, size_t stride)\r
  88 {\r
  89         std::shared_ptr<device_buffer> buffer;\r
  90         try\r
  91         {\r
  92                 buffer.reset(new device_buffer(width, height, stride));\r
  93         }\r
  94         catch(...)\r
  95         {\r
  96                 try\r
  97                 {\r
  98                         yield();\r
  99                         gc().wait();\r
 100                                         \r
 101                         // Try again\r
 102                         buffer.reset(new device_buffer(width, height, stride));\r
 103                 }\r
 104                 catch(...)\r
 105                 {\r
 106                         CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
 107                         throw;\r
 108                 }\r
 109         }\r
 110         return make_safe_ptr(buffer);\r
 111 }\r
 112                                 \r
 113 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
 114 {\r
 115         CASPAR_VERIFY(stride > 0 && stride < 5);\r
 116         CASPAR_VERIFY(width > 0 && height > 0);\r
 117         auto& pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
 118         std::shared_ptr<device_buffer> buffer;\r
 119         if(!pool->items.try_pop(buffer))                \r
 120                 buffer = executor_.invoke([&]{return allocate_device_buffer(width, height, stride);}, high_priority);                   \r
 121         \r
 122         //++pool->usage_count;\r
 123 \r
 124         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*) mutable\r
 125         {               \r
 126                 pool->items.push(buffer);       \r
 127         });\r
 128 }\r
 129 \r
 130 safe_ptr<host_buffer> ogl_device::allocate_host_buffer(size_t size, host_buffer::usage_t usage)\r
 131 {\r
 132         std::shared_ptr<host_buffer> buffer;\r
 133 \r
 134         try\r
 135         {\r
 136                 buffer.reset(new host_buffer(size, usage));\r
 137                 if(usage == host_buffer::write_only)\r
 138                         buffer->map();\r
 139                 else\r
 140                         buffer->unmap();                        \r
 141         }\r
 142         catch(...)\r
 143         {\r
 144                 try\r
 145                 {\r
 146                         yield();\r
 147                         gc().wait();\r
 148 \r
 149                         // Try again\r
 150                         buffer.reset(new host_buffer(size, usage));\r
 151                         if(usage == host_buffer::write_only)\r
 152                                 buffer->map();\r
 153                         else\r
 154                                 buffer->unmap();        \r
 155                 }\r
 156                 catch(...)\r
 157                 {\r
 158                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 159                         throw;          \r
 160                 }\r
 161         }\r
 162 \r
 163         return make_safe_ptr(buffer);\r
 164 }\r
 165         \r
 166 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 167 {\r
 168         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 169         CASPAR_VERIFY(size > 0);\r
 170         auto& pool = host_pools_[usage][size];\r
 171         std::shared_ptr<host_buffer> buffer;\r
 172         if(!pool->items.try_pop(buffer))        \r
 173                 buffer = executor_.invoke([=]{return allocate_host_buffer(size, usage);}, high_priority);       \r
 174         \r
 175         //++pool->usage_count;\r
 176 \r
 177         auto self = shared_from_this();\r
 178         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable\r
 179         {\r
 180                 self->executor_.begin_invoke([=]() mutable\r
 181                 {               \r
 182                         if(usage == host_buffer::write_only)\r
 183                                 buffer->map();\r
 184                         else\r
 185                                 buffer->unmap();\r
 186 \r
 187                         pool->items.push(buffer);\r
 188                 }, high_priority);      \r
 189         });\r
 190 }\r
 191 \r
 192 safe_ptr<ogl_device> ogl_device::create()\r
 193 {\r
 194         return safe_ptr<ogl_device>(new ogl_device());\r
 195 }\r
 196 \r
 197 //template<typename T>\r
 198 //void flush_pool(buffer_pool<T>& pool)\r
 199 //{     \r
 200 //      if(pool.flush_count.fetch_and_increment() < 16)\r
 201 //              return;\r
 202 //\r
 203 //      if(pool.usage_count.fetch_and_store(0) < pool.items.size())\r
 204 //      {\r
 205 //              std::shared_ptr<T> buffer;\r
 206 //              pool.items.try_pop(buffer);\r
 207 //      }\r
 208 //\r
 209 //      pool.flush_count = 0;\r
 210 //      pool.usage_count = 0;\r
 211 //}\r
 212 \r
 213 void ogl_device::flush()\r
 214 {\r
 215         GL(glFlush());  \r
 216                 \r
 217         //try\r
 218         //{\r
 219         //      BOOST_FOREACH(auto& pools, device_pools_)\r
 220         //      {\r
 221         //              BOOST_FOREACH(auto& pool, pools)\r
 222         //                      flush_pool(*pool.second);\r
 223         //      }\r
 224         //      BOOST_FOREACH(auto& pools, host_pools_)\r
 225         //      {\r
 226         //              BOOST_FOREACH(auto& pool, pools)\r
 227         //                      flush_pool(*pool.second);\r
 228         //      }\r
 229         //}\r
 230         //catch(...)\r
 231         //{\r
 232         //      CASPAR_LOG_CURRENT_EXCEPTION();\r
 233         //}\r
 234 }\r
 235 \r
 236 void ogl_device::yield()\r
 237 {\r
 238         executor_.yield();\r
 239 }\r
 240 \r
 241 boost::unique_future<void> ogl_device::gc()\r
 242 {       \r
 243         return begin_invoke([=]\r
 244         {\r
 245                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 246         \r
 247                 try\r
 248                 {\r
 249                         BOOST_FOREACH(auto& pools, device_pools_)\r
 250                         {\r
 251                                 BOOST_FOREACH(auto& pool, pools)\r
 252                                         pool.second->items.clear();\r
 253                         }\r
 254                         BOOST_FOREACH(auto& pools, host_pools_)\r
 255                         {\r
 256                                 BOOST_FOREACH(auto& pool, pools)\r
 257                                         pool.second->items.clear();\r
 258                         }\r
 259                 }\r
 260                 catch(...)\r
 261                 {\r
 262                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 263                 }\r
 264         }, high_priority);\r
 265 }\r
 266 \r
 267 std::wstring ogl_device::version()\r
 268 {       \r
 269         static std::wstring ver = L"Not found";\r
 270         try\r
 271         {\r
 272                 ver = widen(invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 273                 + " "   + invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                      \r
 274         }\r
 275         catch(...){}\r
 276 \r
 277         return ver;\r
 278 }\r
 279 \r
 280 \r
 281 void ogl_device::enable(GLenum cap)\r
 282 {\r
 283         auto& val = caps_[cap];\r
 284         if(!val)\r
 285         {\r
 286                 glEnable(cap);\r
 287                 val = true;\r
 288         }\r
 289 }\r
 290 \r
 291 void ogl_device::disable(GLenum cap)\r
 292 {\r
 293         auto& val = caps_[cap];\r
 294         if(val)\r
 295         {\r
 296                 glDisable(cap);\r
 297                 val = false;\r
 298         }\r
 299 }\r
 300 \r
 301 void ogl_device::viewport(size_t x, size_t y, size_t width, size_t height)\r
 302 {\r
 303         if(x != viewport_[0] || y != viewport_[1] || width != viewport_[2] || height != viewport_[3])\r
 304         {               \r
 305                 glViewport(x, y, width, height);\r
 306                 viewport_[0] = x;\r
 307                 viewport_[1] = y;\r
 308                 viewport_[2] = width;\r
 309                 viewport_[3] = height;\r
 310         }\r
 311 }\r
 312 \r
 313 void ogl_device::scissor(size_t x, size_t y, size_t width, size_t height)\r
 314 {\r
 315         if(x != scissor_[0] || y != scissor_[1] || width != scissor_[2] || height != scissor_[3])\r
 316         {               \r
 317                 glScissor(x, y, width, height);\r
 318                 scissor_[0] = x;\r
 319                 scissor_[1] = y;\r
 320                 scissor_[2] = width;\r
 321                 scissor_[3] = height;\r
 322         }\r
 323 }\r
 324 \r
 325 void ogl_device::stipple_pattern(const GLubyte* pattern)\r
 326 {\r
 327         if(pattern_ != pattern)\r
 328         {               \r
 329                 glPolygonStipple(pattern);\r
 330                 pattern_ = pattern;\r
 331         }\r
 332 }\r
 333 \r
 334 void ogl_device::attach(device_buffer& texture)\r
 335 {       \r
 336         if(attached_texture_ != texture.id())\r
 337         {\r
 338                 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));\r
 339                 attached_texture_ = texture.id();\r
 340         }\r
 341 }\r
 342 \r
 343 void ogl_device::clear(device_buffer& texture)\r
 344 {       \r
 345         attach(texture);\r
 346         GL(glClear(GL_COLOR_BUFFER_BIT));\r
 347 }\r
 348 \r
 349 void ogl_device::use(shader& shader)\r
 350 {\r
 351         if(active_shader_ != shader.id())\r
 352         {               \r
 353                 GL(glUseProgramObjectARB(shader.id())); \r
 354                 active_shader_ = shader.id();\r
 355         }\r
 356 }\r
 357 \r
 358 void ogl_device::blend_func(int c1, int c2, int a1, int a2)\r
 359 {\r
 360         std::array<int, 4> func = {c1, c2, a1, a2};\r
 361 \r
 362         if(blend_func_ != func)\r
 363         {\r
 364                 blend_func_ = func;\r
 365                 GL(glBlendFuncSeparate(c1, c2, a1, a2));\r
 366         }\r
 367 }\r
 368 \r
 369 void ogl_device::blend_func(int c1, int c2)\r
 370 {\r
 371         blend_func(c1, c2, c1, c2);\r
 372 }\r
 373 \r
 374 }}\r
 375 \r