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