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

   1 /*\r
   2 * Copyright 2013 Sveriges Television AB http://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 #pragma once\r
  23 \r
  24 #include "host_buffer.h"\r
  25 #include "device_buffer.h"\r
  26 \r
  27 #include <common/concurrency/executor.h>\r
  28 #include <common/memory/safe_ptr.h>\r
  29 \r
  30 #include <gl/glew.h>\r
  31 \r
  32 #include <SFML/Window/Context.hpp>\r
  33 \r
  34 #include <tbb/concurrent_unordered_map.h>\r
  35 #include <tbb/concurrent_queue.h>\r
  36 \r
  37 #include <boost/noncopyable.hpp>\r
  38 #include <boost/thread/future.hpp>\r
  39 \r
  40 #include <array>\r
  41 #include <unordered_map>\r
  42 \r
  43 namespace caspar { namespace core {\r
  44 \r
  45 class shader;\r
  46 \r
  47 template<typename T>\r
  48 struct buffer_pool\r
  49 {\r
  50         tbb::atomic<int> usage_count;\r
  51         tbb::atomic<int> flush_count;\r
  52         tbb::concurrent_bounded_queue<std::shared_ptr<T>> items;\r
  53 \r
  54         buffer_pool()\r
  55         {\r
  56                 usage_count = 0;\r
  57                 flush_count = 0;\r
  58         }\r
  59 };\r
  60 \r
  61 class ogl_device : public std::enable_shared_from_this<ogl_device>, boost::noncopyable\r
  62 {       \r
  63         std::unordered_map<GLenum, bool> caps_;\r
  64         std::array<size_t, 4>                    viewport_;\r
  65         std::array<size_t, 4>                    scissor_;\r
  66         const GLubyte*                                   pattern_;\r
  67         GLint                                                    attached_texture_;\r
  68         GLuint                                                   attached_fbo_;\r
  69         GLint                                                    active_shader_;\r
  70         std::array<GLint, 16>                    binded_textures_;\r
  71         std::array<GLint, 4>                     blend_func_;\r
  72         GLenum                                                   read_buffer_;\r
  73 \r
  74         std::unique_ptr<sf::Context> context_;\r
  75         \r
  76         std::array<tbb::concurrent_unordered_map<size_t, safe_ptr<buffer_pool<device_buffer>>>, 8> device_pools_;\r
  77         std::array<tbb::concurrent_unordered_map<size_t, safe_ptr<buffer_pool<host_buffer>>>, 2> host_pools_;\r
  78         \r
  79         GLuint fbo_;\r
  80 \r
  81         executor executor_;\r
  82                                 \r
  83         ogl_device();\r
  84 public:         \r
  85         static safe_ptr<ogl_device> create();\r
  86         ~ogl_device();\r
  87 \r
  88         // Not thread-safe, must be called inside of context\r
  89         void enable(GLenum cap);\r
  90         void disable(GLenum cap);\r
  91         void viewport(size_t x, size_t y, size_t width, size_t height);\r
  92         void scissor(size_t x, size_t y, size_t width, size_t height);\r
  93         void stipple_pattern(const GLubyte* pattern);\r
  94 \r
  95         void attach(device_buffer& texture);\r
  96         void clear(device_buffer& texture);\r
  97         \r
  98         void blend_func(int c1, int c2, int a1, int a2);\r
  99         void blend_func(int c1, int c2);\r
 100         \r
 101         void use(shader& shader);\r
 102 \r
 103         void read_buffer(device_buffer& texture);\r
 104 \r
 105         void flush();\r
 106 \r
 107         // thread-afe\r
 108         template<typename Func>\r
 109         auto begin_invoke(Func&& func, task_priority priority = normal_priority) -> boost::unique_future<decltype(func())> // noexcept\r
 110         {                       \r
 111                 return executor_.begin_invoke(std::forward<Func>(func), priority);\r
 112         }\r
 113         \r
 114         template<typename Func>\r
 115         auto invoke(Func&& func, task_priority priority = normal_priority) -> decltype(func())\r
 116         {\r
 117                 return executor_.invoke(std::forward<Func>(func), priority);\r
 118         }\r
 119                 \r
 120         safe_ptr<device_buffer> create_device_buffer(size_t width, size_t height, size_t stride, bool mipmapped);\r
 121         safe_ptr<host_buffer> create_host_buffer(size_t size, host_buffer::usage_t usage);\r
 122         \r
 123         void yield();\r
 124         boost::unique_future<void> gc();\r
 125 \r
 126         std::wstring version();\r
 127 \r
 128 private:\r
 129         safe_ptr<device_buffer> allocate_device_buffer(size_t width, size_t height, size_t stride, bool mipmapped);\r
 130         safe_ptr<host_buffer> allocate_host_buffer(size_t size, host_buffer::usage_t usage);\r
 131 };\r
 132 \r
 133 }}