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