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