git.sesse.net Git - casparcg/blob - core/mixer/gpu/ogl_device.h

   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 #pragma once\r
  21 \r
  22 #include "host_buffer.h"\r
  23 #include "device_buffer.h"\r
  24 \r
  25 #include <common/concurrency/executor.h>\r
  26 #include <common/memory/safe_ptr.h>\r
  27 \r
  28 #include <tbb/concurrent_unordered_map.h>\r
  29 #include <tbb/concurrent_queue.h>\r
  30 \r
  31 #include <boost/noncopyable.hpp>\r
  32 #include <boost/thread/future.hpp>\r
  33 \r
  34 #include <array>\r
  35 #include <unordered_map>\r
  36 \r
  37 #include <gl/glew.h>\r
  38 \r
  39 #include "../../dependencies\SFML-1.6\include\SFML/Window/Context.hpp"\r
  40 \r
  41 namespace caspar { namespace core {\r
  42 \r
  43 class shader;\r
  44 \r
  45 template<typename T>\r
  46 struct buffer_pool\r
  47 {\r
  48         tbb::atomic<int> usage_count;\r
  49         tbb::atomic<int> flush_count;\r
  50         tbb::concurrent_bounded_queue<std::shared_ptr<T>> items;\r
  51 \r
  52         buffer_pool()\r
  53         {\r
  54                 usage_count = 0;\r
  55                 flush_count = 0;\r
  56         }\r
  57 };\r
  58 \r
  59 class ogl_device : boost::noncopyable\r
  60 {       \r
  61         std::unordered_map<GLenum, bool> caps_;\r
  62         std::array<size_t, 4>                    viewport_;\r
  63         std::array<size_t, 4>                    scissor_;\r
  64         const GLubyte*                                   pattern_;\r
  65         GLint                                                    attached_texture_;\r
  66         GLint                                                    active_shader_;\r
  67         std::array<GLint, 16>                    binded_textures_;\r
  68         std::array<GLint, 4>                     blend_func_;\r
  69 \r
  70         std::unique_ptr<sf::Context> context_;\r
  71         \r
  72         std::array<tbb::concurrent_unordered_map<size_t, safe_ptr<buffer_pool<device_buffer>>>, 4> device_pools_;\r
  73         std::array<tbb::concurrent_unordered_map<size_t, safe_ptr<buffer_pool<host_buffer>>>, 2> host_pools_;\r
  74         \r
  75         unsigned int fbo_;\r
  76 \r
  77         executor executor_;\r
  78                                 \r
  79 public:         \r
  80         ogl_device();\r
  81         ~ogl_device();\r
  82 \r
  83         // Not thread-safe, must be called inside of context\r
  84         void enable(GLenum cap);\r
  85         void disable(GLenum cap);\r
  86         void viewport(size_t x, size_t y, size_t width, size_t height);\r
  87         void scissor(size_t x, size_t y, size_t width, size_t height);\r
  88         void stipple_pattern(const GLubyte* pattern);\r
  89 \r
  90         void attach(device_buffer& texture);\r
  91         void clear(device_buffer& texture);\r
  92 \r
  93         void begin_read(host_buffer& dest, device_buffer& source);\r
  94         void begin_read(device_buffer& dest, host_buffer& source);\r
  95 \r
  96         void blend_func(int c1, int c2, int a1, int a2);\r
  97         void blend_func(int c1, int c2);\r
  98         \r
  99         void use(shader& shader);\r
 100 \r
 101         void flush();\r
 102 \r
 103         // thread-afe\r
 104         template<typename Func>\r
 105         auto begin_invoke(Func&& func, task_priority priority = normal_priority) -> boost::unique_future<decltype(func())> // noexcept\r
 106         {                       \r
 107                 return executor_.begin_invoke(std::forward<Func>(func), priority);\r
 108         }\r
 109         \r
 110         template<typename Func>\r
 111         auto invoke(Func&& func, task_priority priority = normal_priority) -> decltype(func())\r
 112         {\r
 113                 return executor_.invoke(std::forward<Func>(func), priority);\r
 114         }\r
 115                 \r
 116         safe_ptr<device_buffer> create_device_buffer(size_t width, size_t height, size_t stride);\r
 117         safe_ptr<host_buffer> create_host_buffer(size_t size, host_buffer::usage_t usage);\r
 118         \r
 119         void yield();\r
 120         boost::unique_future<void> gc();\r
 121 \r
 122         static std::wstring get_version();\r
 123 \r
 124 private:\r
 125         safe_ptr<device_buffer> allocate_device_buffer(size_t width, size_t height, size_t stride);\r
 126         safe_ptr<host_buffer> allocate_host_buffer(size_t size, host_buffer::usage_t usage);\r
 127 };\r
 128 \r
 129 }}