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         , attached_fbo_(0)\r
  45         , active_shader_(0)\r
  46         , read_buffer_(0)\r
  47 {\r
  48         CASPAR_LOG(info) << L"Initializing OpenGL Device.";\r
  49 \r
  50         std::fill(binded_textures_.begin(), binded_textures_.end(), 0);\r
  51         std::fill(viewport_.begin(), viewport_.end(), 0);\r
  52         std::fill(scissor_.begin(), scissor_.end(), 0);\r
  53         std::fill(blend_func_.begin(), blend_func_.end(), 0);\r
  54         \r
  55         invoke([=]\r
  56         {\r
  57                 context_.reset(new sf::Context());\r
  58                 context_->SetActive(true);\r
  59                 \r
  60                 if (glewInit() != GLEW_OK)\r
  61                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  62                                                 \r
  63                 CASPAR_LOG(info) << L"OpenGL " << version();\r
  64 \r
  65                 if(!GLEW_VERSION_3_0)\r
  66                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Your graphics card does not meet the minimum hardware requirements since it does not support OpenGL 3.0 or higher. CasparCG Server will not be able to continue."));\r
  67         \r
  68                 glGenFramebuffers(1, &fbo_);    \r
  69                 \r
  70                 CASPAR_LOG(info) << L"Successfully initialized OpenGL Device.";\r
  71         });\r
  72 }\r
  73 \r
  74 ogl_device::~ogl_device()\r
  75 {\r
  76         invoke([=]\r
  77         {\r
  78                 BOOST_FOREACH(auto& pool, device_pools_)\r
  79                         pool.clear();\r
  80                 BOOST_FOREACH(auto& pool, host_pools_)\r
  81                         pool.clear();\r
  82                 glDeleteFramebuffers(1, &fbo_);\r
  83         });\r
  84 }\r
  85 \r
  86 safe_ptr<device_buffer> ogl_device::allocate_device_buffer(size_t width, size_t height, size_t stride)\r
  87 {\r
  88         std::shared_ptr<device_buffer> buffer;\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         return make_safe_ptr(buffer);\r
 110 }\r
 111                                 \r
 112 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
 113 {\r
 114         CASPAR_VERIFY(stride > 0 && stride < 5);\r
 115         CASPAR_VERIFY(width > 0 && height > 0);\r
 116         auto& pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
 117         std::shared_ptr<device_buffer> buffer;\r
 118         if(!pool->items.try_pop(buffer))                \r
 119                 buffer = executor_.invoke([&]{return allocate_device_buffer(width, height, stride);}, high_priority);                   \r
 120         \r
 121         //++pool->usage_count;\r
 122 \r
 123         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*) mutable\r
 124         {               \r
 125                 pool->items.push(buffer);       \r
 126         });\r
 127 }\r
 128 \r
 129 safe_ptr<host_buffer> ogl_device::allocate_host_buffer(size_t size, host_buffer::usage_t usage)\r
 130 {\r
 131         std::shared_ptr<host_buffer> buffer;\r
 132 \r
 133         try\r
 134         {\r
 135                 buffer.reset(new host_buffer(size, usage));\r
 136                 if(usage == host_buffer::write_only)\r
 137                         buffer->map();\r
 138                 else\r
 139                         buffer->unmap();                        \r
 140         }\r
 141         catch(...)\r
 142         {\r
 143                 try\r
 144                 {\r
 145                         yield();\r
 146                         gc().wait();\r
 147 \r
 148                         // Try again\r
 149                         buffer.reset(new host_buffer(size, usage));\r
 150                         if(usage == host_buffer::write_only)\r
 151                                 buffer->map();\r
 152                         else\r
 153                                 buffer->unmap();        \r
 154                 }\r
 155                 catch(...)\r
 156                 {\r
 157                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 158                         throw;          \r
 159                 }\r
 160         }\r
 161 \r
 162         return make_safe_ptr(buffer);\r
 163 }\r
 164         \r
 165 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 166 {\r
 167         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 168         CASPAR_VERIFY(size > 0);\r
 169         auto& pool = host_pools_[usage][size];\r
 170         std::shared_ptr<host_buffer> buffer;\r
 171         if(!pool->items.try_pop(buffer))        \r
 172                 buffer = executor_.invoke([=]{return allocate_host_buffer(size, usage);}, high_priority);       \r
 173         \r
 174         //++pool->usage_count;\r
 175 \r
 176         auto self = shared_from_this();\r
 177         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable\r
 178         {\r
 179                 self->executor_.begin_invoke([=]() mutable\r
 180                 {               \r
 181                         if(usage == host_buffer::write_only)\r
 182                                 buffer->map();\r
 183                         else\r
 184                                 buffer->unmap();\r
 185 \r
 186                         pool->items.push(buffer);\r
 187                 }, high_priority);      \r
 188         });\r
 189 }\r
 190 \r
 191 safe_ptr<ogl_device> ogl_device::create()\r
 192 {\r
 193         return safe_ptr<ogl_device>(new ogl_device());\r
 194 }\r
 195 \r
 196 //template<typename T>\r
 197 //void flush_pool(buffer_pool<T>& pool)\r
 198 //{     \r
 199 //      if(pool.flush_count.fetch_and_increment() < 16)\r
 200 //              return;\r
 201 //\r
 202 //      if(pool.usage_count.fetch_and_store(0) < pool.items.size())\r
 203 //      {\r
 204 //              std::shared_ptr<T> buffer;\r
 205 //              pool.items.try_pop(buffer);\r
 206 //      }\r
 207 //\r
 208 //      pool.flush_count = 0;\r
 209 //      pool.usage_count = 0;\r
 210 //}\r
 211 \r
 212 void ogl_device::flush()\r
 213 {\r
 214         GL(glFlush());  \r
 215                 \r
 216         //try\r
 217         //{\r
 218         //      BOOST_FOREACH(auto& pools, device_pools_)\r
 219         //      {\r
 220         //              BOOST_FOREACH(auto& pool, pools)\r
 221         //                      flush_pool(*pool.second);\r
 222         //      }\r
 223         //      BOOST_FOREACH(auto& pools, host_pools_)\r
 224         //      {\r
 225         //              BOOST_FOREACH(auto& pool, pools)\r
 226         //                      flush_pool(*pool.second);\r
 227         //      }\r
 228         //}\r
 229         //catch(...)\r
 230         //{\r
 231         //      CASPAR_LOG_CURRENT_EXCEPTION();\r
 232         //}\r
 233 }\r
 234 \r
 235 void ogl_device::yield()\r
 236 {\r
 237         executor_.yield();\r
 238 }\r
 239 \r
 240 boost::unique_future<void> ogl_device::gc()\r
 241 {       \r
 242         return begin_invoke([=]\r
 243         {\r
 244                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 245         \r
 246                 try\r
 247                 {\r
 248                         BOOST_FOREACH(auto& pools, device_pools_)\r
 249                         {\r
 250                                 BOOST_FOREACH(auto& pool, pools)\r
 251                                         pool.second->items.clear();\r
 252                         }\r
 253                         BOOST_FOREACH(auto& pools, host_pools_)\r
 254                         {\r
 255                                 BOOST_FOREACH(auto& pool, pools)\r
 256                                         pool.second->items.clear();\r
 257                         }\r
 258                 }\r
 259                 catch(...)\r
 260                 {\r
 261                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 262                 }\r
 263         }, high_priority);\r
 264 }\r
 265 \r
 266 std::wstring ogl_device::version()\r
 267 {       \r
 268         static std::wstring ver = L"Not found";\r
 269         try\r
 270         {\r
 271                 ver = widen(invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 272                 + " "   + 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                 if(attached_fbo_ != fbo_)\r
 338                 {\r
 339                         glBindFramebuffer(GL_FRAMEBUFFER, fbo_);\r
 340                         attached_fbo_ = fbo_;\r
 341                 }\r
 342 \r
 343                 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));\r
 344                 attached_texture_ = texture.id();\r
 345         }\r
 346 }\r
 347 \r
 348 void ogl_device::clear(device_buffer& texture)\r
 349 {       \r
 350         attach(texture);\r
 351         GL(glClear(GL_COLOR_BUFFER_BIT));\r
 352 }\r
 353 \r
 354 void ogl_device::read_buffer(device_buffer&)\r
 355 {\r
 356         if(read_buffer_ != GL_COLOR_ATTACHMENT0)\r
 357         {\r
 358                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0));\r
 359                 read_buffer_ = GL_COLOR_ATTACHMENT0;\r
 360         }\r
 361 }\r
 362 \r
 363 void ogl_device::use(shader& shader)\r
 364 {\r
 365         if(active_shader_ != shader.id())\r
 366         {               \r
 367                 GL(glUseProgramObjectARB(shader.id())); \r
 368                 active_shader_ = shader.id();\r
 369         }\r
 370 }\r
 371 \r
 372 void ogl_device::blend_func(int c1, int c2, int a1, int a2)\r
 373 {\r
 374         std::array<int, 4> func = {c1, c2, a1, a2};\r
 375 \r
 376         if(blend_func_ != func)\r
 377         {\r
 378                 blend_func_ = func;\r
 379                 GL(glBlendFuncSeparate(c1, c2, a1, a2));\r
 380         }\r
 381 }\r
 382 \r
 383 void ogl_device::blend_func(int c1, int c2)\r
 384 {\r
 385         blend_func(c1, c2, c1, c2);\r
 386 }\r
 387 \r
 388 }}\r
 389 \r