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(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(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         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable\r
 170         {\r
 171                 executor_.begin_invoke([=]() mutable\r
 172                 {               \r
 173                         if(usage == host_buffer::write_only)\r
 174                                 buffer->map();\r
 175                         else\r
 176                                 buffer->unmap();\r
 177 \r
 178                         pool->items.push(buffer);\r
 179                 }, high_priority);      \r
 180         });\r
 181 }\r
 182 \r
 183 //template<typename T>\r
 184 //void flush_pool(buffer_pool<T>& pool)\r
 185 //{     \r
 186 //      if(pool.flush_count.fetch_and_increment() < 16)\r
 187 //              return;\r
 188 //\r
 189 //      if(pool.usage_count.fetch_and_store(0) < pool.items.size())\r
 190 //      {\r
 191 //              std::shared_ptr<T> buffer;\r
 192 //              pool.items.try_pop(buffer);\r
 193 //      }\r
 194 //\r
 195 //      pool.flush_count = 0;\r
 196 //      pool.usage_count = 0;\r
 197 //}\r
 198 \r
 199 void ogl_device::flush()\r
 200 {\r
 201         GL(glFlush());  \r
 202                 \r
 203         //try\r
 204         //{\r
 205         //      BOOST_FOREACH(auto& pools, device_pools_)\r
 206         //      {\r
 207         //              BOOST_FOREACH(auto& pool, pools)\r
 208         //                      flush_pool(*pool.second);\r
 209         //      }\r
 210         //      BOOST_FOREACH(auto& pools, host_pools_)\r
 211         //      {\r
 212         //              BOOST_FOREACH(auto& pool, pools)\r
 213         //                      flush_pool(*pool.second);\r
 214         //      }\r
 215         //}\r
 216         //catch(...)\r
 217         //{\r
 218         //      CASPAR_LOG_CURRENT_EXCEPTION();\r
 219         //}\r
 220 }\r
 221 \r
 222 void ogl_device::yield()\r
 223 {\r
 224         executor_.yield();\r
 225 }\r
 226 \r
 227 boost::unique_future<void> ogl_device::gc()\r
 228 {       \r
 229         return begin_invoke([=]\r
 230         {\r
 231                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 232         \r
 233                 try\r
 234                 {\r
 235                         BOOST_FOREACH(auto& pools, device_pools_)\r
 236                         {\r
 237                                 BOOST_FOREACH(auto& pool, pools)\r
 238                                         pool.second->items.clear();\r
 239                         }\r
 240                         BOOST_FOREACH(auto& pools, host_pools_)\r
 241                         {\r
 242                                 BOOST_FOREACH(auto& pool, pools)\r
 243                                         pool.second->items.clear();\r
 244                         }\r
 245                 }\r
 246                 catch(...)\r
 247                 {\r
 248                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 249                 }\r
 250         }, high_priority);\r
 251 }\r
 252 \r
 253 std::wstring ogl_device::get_version()\r
 254 {       \r
 255         static std::wstring ver = L"Not found";\r
 256         try\r
 257         {\r
 258                 ogl_device tmp;\r
 259                 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 260                 + " "   + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                  \r
 261         }\r
 262         catch(...){}\r
 263 \r
 264         return ver;\r
 265 }\r
 266 \r
 267 \r
 268 void ogl_device::enable(GLenum cap)\r
 269 {\r
 270         auto& val = caps_[cap];\r
 271         if(!val)\r
 272         {\r
 273                 glEnable(cap);\r
 274                 val = true;\r
 275         }\r
 276 }\r
 277 \r
 278 void ogl_device::disable(GLenum cap)\r
 279 {\r
 280         auto& val = caps_[cap];\r
 281         if(val)\r
 282         {\r
 283                 glDisable(cap);\r
 284                 val = false;\r
 285         }\r
 286 }\r
 287 \r
 288 void ogl_device::viewport(size_t x, size_t y, size_t width, size_t height)\r
 289 {\r
 290         if(x != viewport_[0] || y != viewport_[1] || width != viewport_[2] || height != viewport_[3])\r
 291         {               \r
 292                 glViewport(x, y, width, height);\r
 293                 viewport_[0] = x;\r
 294                 viewport_[1] = y;\r
 295                 viewport_[2] = width;\r
 296                 viewport_[3] = height;\r
 297         }\r
 298 }\r
 299 \r
 300 void ogl_device::scissor(size_t x, size_t y, size_t width, size_t height)\r
 301 {\r
 302         if(x != scissor_[0] || y != scissor_[1] || width != scissor_[2] || height != scissor_[3])\r
 303         {               \r
 304                 glScissor(x, y, width, height);\r
 305                 scissor_[0] = x;\r
 306                 scissor_[1] = y;\r
 307                 scissor_[2] = width;\r
 308                 scissor_[3] = height;\r
 309         }\r
 310 }\r
 311 \r
 312 void ogl_device::stipple_pattern(const GLubyte* pattern)\r
 313 {\r
 314         if(pattern_ != pattern)\r
 315         {               \r
 316                 glPolygonStipple(pattern);\r
 317                 pattern_ = pattern;\r
 318         }\r
 319 }\r
 320 \r
 321 void ogl_device::attach(device_buffer& texture)\r
 322 {       \r
 323         if(attached_texture_ != texture.id())\r
 324         {\r
 325                 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));\r
 326                 attached_texture_ = texture.id();\r
 327         }\r
 328 }\r
 329 \r
 330 void ogl_device::clear(device_buffer& texture)\r
 331 {       \r
 332         attach(texture);\r
 333         GL(glClear(GL_COLOR_BUFFER_BIT));\r
 334 }\r
 335 \r
 336 void ogl_device::use(shader& shader)\r
 337 {\r
 338         if(active_shader_ != shader.id())\r
 339         {               \r
 340                 GL(glUseProgramObjectARB(shader.id())); \r
 341                 active_shader_ = shader.id();\r
 342         }\r
 343 }\r
 344 \r
 345 void ogl_device::blend_func(int c1, int c2, int a1, int a2)\r
 346 {\r
 347         std::array<int, 4> func = {c1, c2, a1, a2};\r
 348 \r
 349         if(blend_func_ != func)\r
 350         {\r
 351                 blend_func_ = func;\r
 352                 GL(glBlendFuncSeparate(c1, c2, a1, a2));\r
 353         }\r
 354 }\r
 355 \r
 356 void ogl_device::blend_func(int c1, int c2)\r
 357 {\r
 358         blend_func(c1, c2, c1, c2);\r
 359 }\r
 360 \r
 361 }}\r
 362 \r