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