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 {\r
  46         CASPAR_LOG(info) << L"Initializing OpenGL Device.";\r
  47 \r
  48         std::fill(binded_textures_.begin(), binded_textures_.end(), 0);\r
  49         std::fill(viewport_.begin(), viewport_.end(), 0);\r
  50         std::fill(scissor_.begin(), scissor_.end(), 0);\r
  51         std::fill(blend_func_.begin(), blend_func_.end(), 0);\r
  52         \r
  53         invoke([=]\r
  54         {\r
  55                 context_.reset(new sf::Context());\r
  56                 context_->SetActive(true);\r
  57                 \r
  58                 if (glewInit() != GLEW_OK)\r
  59                         BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));\r
  60                                                 \r
  61                 CASPAR_LOG(info) << L"OpenGL " << version();\r
  62 \r
  63                 if(!GLEW_VERSION_3_0)\r
  64                         CASPAR_LOG(warning) << "Missing OpenGL 3.0 support.";\r
  65         \r
  66                 CASPAR_LOG(info) << L"Successfully initialized GLEW.";\r
  67 \r
  68                 GL(glGenFramebuffers(1, &fbo_));                \r
  69                 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));\r
  70                 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));\r
  71         //GL(glDisable(GL_MULTISAMPLE_ARB));\r
  72 \r
  73                 CASPAR_LOG(info) << L"Successfully initialized OpenGL Device.";\r
  74         });\r
  75 }\r
  76 \r
  77 ogl_device::~ogl_device()\r
  78 {\r
  79         invoke([=]\r
  80         {\r
  81                 BOOST_FOREACH(auto& pool, device_pools_)\r
  82                         pool.clear();\r
  83                 BOOST_FOREACH(auto& pool, host_pools_)\r
  84                         pool.clear();\r
  85                 glDeleteFramebuffersEXT(1, &fbo_);\r
  86         });\r
  87 }\r
  88 \r
  89 safe_ptr<device_buffer> ogl_device::allocate_device_buffer(size_t width, size_t height, size_t stride)\r
  90 {\r
  91         std::shared_ptr<device_buffer> buffer;\r
  92         try\r
  93         {\r
  94                 buffer.reset(new device_buffer(width, height, stride));\r
  95         }\r
  96         catch(...)\r
  97         {\r
  98                 try\r
  99                 {\r
 100                         yield();\r
 101                         gc().wait();\r
 102                                         \r
 103                         // Try again\r
 104                         buffer.reset(new device_buffer(width, height, stride));\r
 105                 }\r
 106                 catch(...)\r
 107                 {\r
 108                         CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";\r
 109                         throw;\r
 110                 }\r
 111         }\r
 112         return make_safe_ptr(buffer);\r
 113 }\r
 114                                 \r
 115 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)\r
 116 {\r
 117         CASPAR_VERIFY(stride > 0 && stride < 5);\r
 118         CASPAR_VERIFY(width > 0 && height > 0);\r
 119         auto& pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];\r
 120         std::shared_ptr<device_buffer> buffer;\r
 121         if(!pool->items.try_pop(buffer))                \r
 122                 buffer = executor_.invoke([&]{return allocate_device_buffer(width, height, stride);}, high_priority);                   \r
 123         \r
 124         //++pool->usage_count;\r
 125 \r
 126         return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*) mutable\r
 127         {               \r
 128                 pool->items.push(buffer);       \r
 129         });\r
 130 }\r
 131 \r
 132 safe_ptr<host_buffer> ogl_device::allocate_host_buffer(size_t size, host_buffer::usage_t usage)\r
 133 {\r
 134         std::shared_ptr<host_buffer> buffer;\r
 135 \r
 136         try\r
 137         {\r
 138                 buffer.reset(new host_buffer(size, usage));\r
 139                 if(usage == host_buffer::write_only)\r
 140                         buffer->map();\r
 141                 else\r
 142                         buffer->unmap();                        \r
 143         }\r
 144         catch(...)\r
 145         {\r
 146                 try\r
 147                 {\r
 148                         yield();\r
 149                         gc().wait();\r
 150 \r
 151                         // Try again\r
 152                         buffer.reset(new host_buffer(size, usage));\r
 153                         if(usage == host_buffer::write_only)\r
 154                                 buffer->map();\r
 155                         else\r
 156                                 buffer->unmap();        \r
 157                 }\r
 158                 catch(...)\r
 159                 {\r
 160                         CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";\r
 161                         throw;          \r
 162                 }\r
 163         }\r
 164 \r
 165         return make_safe_ptr(buffer);\r
 166 }\r
 167         \r
 168 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)\r
 169 {\r
 170         CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);\r
 171         CASPAR_VERIFY(size > 0);\r
 172         auto& pool = host_pools_[usage][size];\r
 173         std::shared_ptr<host_buffer> buffer;\r
 174         if(!pool->items.try_pop(buffer))        \r
 175                 buffer = executor_.invoke([=]{return allocate_host_buffer(size, usage);}, high_priority);       \r
 176         \r
 177         //++pool->usage_count;\r
 178 \r
 179         auto self = shared_from_this();\r
 180         return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable\r
 181         {\r
 182                 self->executor_.begin_invoke([=]() mutable\r
 183                 {               \r
 184                         if(usage == host_buffer::write_only)\r
 185                                 buffer->map();\r
 186                         else\r
 187                                 buffer->unmap();\r
 188 \r
 189                         pool->items.push(buffer);\r
 190                 }, high_priority);      \r
 191         });\r
 192 }\r
 193 \r
 194 safe_ptr<ogl_device> ogl_device::create()\r
 195 {\r
 196         return safe_ptr<ogl_device>(new ogl_device());\r
 197 }\r
 198 \r
 199 //template<typename T>\r
 200 //void flush_pool(buffer_pool<T>& pool)\r
 201 //{     \r
 202 //      if(pool.flush_count.fetch_and_increment() < 16)\r
 203 //              return;\r
 204 //\r
 205 //      if(pool.usage_count.fetch_and_store(0) < pool.items.size())\r
 206 //      {\r
 207 //              std::shared_ptr<T> buffer;\r
 208 //              pool.items.try_pop(buffer);\r
 209 //      }\r
 210 //\r
 211 //      pool.flush_count = 0;\r
 212 //      pool.usage_count = 0;\r
 213 //}\r
 214 \r
 215 void ogl_device::flush()\r
 216 {\r
 217         GL(glFlush());  \r
 218                 \r
 219         //try\r
 220         //{\r
 221         //      BOOST_FOREACH(auto& pools, device_pools_)\r
 222         //      {\r
 223         //              BOOST_FOREACH(auto& pool, pools)\r
 224         //                      flush_pool(*pool.second);\r
 225         //      }\r
 226         //      BOOST_FOREACH(auto& pools, host_pools_)\r
 227         //      {\r
 228         //              BOOST_FOREACH(auto& pool, pools)\r
 229         //                      flush_pool(*pool.second);\r
 230         //      }\r
 231         //}\r
 232         //catch(...)\r
 233         //{\r
 234         //      CASPAR_LOG_CURRENT_EXCEPTION();\r
 235         //}\r
 236 }\r
 237 \r
 238 void ogl_device::yield()\r
 239 {\r
 240         executor_.yield();\r
 241 }\r
 242 \r
 243 boost::unique_future<void> ogl_device::gc()\r
 244 {       \r
 245         return begin_invoke([=]\r
 246         {\r
 247                 CASPAR_LOG(info) << " ogl: Running GC.";                \r
 248         \r
 249                 try\r
 250                 {\r
 251                         BOOST_FOREACH(auto& pools, device_pools_)\r
 252                         {\r
 253                                 BOOST_FOREACH(auto& pool, pools)\r
 254                                         pool.second->items.clear();\r
 255                         }\r
 256                         BOOST_FOREACH(auto& pools, host_pools_)\r
 257                         {\r
 258                                 BOOST_FOREACH(auto& pool, pools)\r
 259                                         pool.second->items.clear();\r
 260                         }\r
 261                 }\r
 262                 catch(...)\r
 263                 {\r
 264                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 265                 }\r
 266         }, high_priority);\r
 267 }\r
 268 \r
 269 std::wstring ogl_device::version()\r
 270 {       \r
 271         static std::wstring ver = L"Not found";\r
 272         try\r
 273         {\r
 274                 ver = widen(invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})\r
 275                 + " "   + invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));                      \r
 276         }\r
 277         catch(...){}\r
 278 \r
 279         return ver;\r
 280 }\r
 281 \r
 282 \r
 283 void ogl_device::enable(GLenum cap)\r
 284 {\r
 285         auto& val = caps_[cap];\r
 286         if(!val)\r
 287         {\r
 288                 glEnable(cap);\r
 289                 val = true;\r
 290         }\r
 291 }\r
 292 \r
 293 void ogl_device::disable(GLenum cap)\r
 294 {\r
 295         auto& val = caps_[cap];\r
 296         if(val)\r
 297         {\r
 298                 glDisable(cap);\r
 299                 val = false;\r
 300         }\r
 301 }\r
 302 \r
 303 void ogl_device::viewport(size_t x, size_t y, size_t width, size_t height)\r
 304 {\r
 305         if(x != viewport_[0] || y != viewport_[1] || width != viewport_[2] || height != viewport_[3])\r
 306         {               \r
 307                 glViewport(x, y, width, height);\r
 308                 viewport_[0] = x;\r
 309                 viewport_[1] = y;\r
 310                 viewport_[2] = width;\r
 311                 viewport_[3] = height;\r
 312         }\r
 313 }\r
 314 \r
 315 void ogl_device::scissor(size_t x, size_t y, size_t width, size_t height)\r
 316 {\r
 317         if(x != scissor_[0] || y != scissor_[1] || width != scissor_[2] || height != scissor_[3])\r
 318         {               \r
 319                 glScissor(x, y, width, height);\r
 320                 scissor_[0] = x;\r
 321                 scissor_[1] = y;\r
 322                 scissor_[2] = width;\r
 323                 scissor_[3] = height;\r
 324         }\r
 325 }\r
 326 \r
 327 void ogl_device::stipple_pattern(const GLubyte* pattern)\r
 328 {\r
 329         if(pattern_ != pattern)\r
 330         {               \r
 331                 glPolygonStipple(pattern);\r
 332                 pattern_ = pattern;\r
 333         }\r
 334 }\r
 335 \r
 336 void ogl_device::attach(device_buffer& texture)\r
 337 {       \r
 338         if(attached_texture_ != texture.id())\r
 339         {\r
 340                 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));\r
 341                 attached_texture_ = texture.id();\r
 342         }\r
 343 }\r
 344 \r
 345 void ogl_device::clear(device_buffer& texture)\r
 346 {       \r
 347         attach(texture);\r
 348         GL(glClear(GL_COLOR_BUFFER_BIT));\r
 349 }\r
 350 \r
 351 void ogl_device::use(shader& shader)\r
 352 {\r
 353         if(active_shader_ != shader.id())\r
 354         {               \r
 355                 GL(glUseProgramObjectARB(shader.id())); \r
 356                 active_shader_ = shader.id();\r
 357         }\r
 358 }\r
 359 \r
 360 void ogl_device::blend_func(int c1, int c2, int a1, int a2)\r
 361 {\r
 362         std::array<int, 4> func = {c1, c2, a1, a2};\r
 363 \r
 364         if(blend_func_ != func)\r
 365         {\r
 366                 blend_func_ = func;\r
 367                 GL(glBlendFuncSeparate(c1, c2, a1, a2));\r
 368         }\r
 369 }\r
 370 \r
 371 void ogl_device::blend_func(int c1, int c2)\r
 372 {\r
 373         blend_func(c1, c2, c1, c2);\r
 374 }\r
 375 \r
 376 }}\r
 377 \r