2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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22 #include "../../stdafx.h"
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24 #include "ogl_device.h"
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28 #include <common/exception/exceptions.h>
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29 #include <common/utility/assert.h>
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30 #include <common/gl/gl_check.h>
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32 #include <boost/foreach.hpp>
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34 #include <gl/glew.h>
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36 namespace caspar { namespace core {
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38 ogl_device::ogl_device()
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39 : executor_(L"ogl_device")
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41 , attached_texture_(0)
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44 std::fill(binded_textures_.begin(), binded_textures_.end(), 0);
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45 std::fill(viewport_.begin(), viewport_.end(), 0);
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46 std::fill(scissor_.begin(), scissor_.end(), 0);
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47 std::fill(blend_func_.begin(), blend_func_.end(), 0);
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51 context_.reset(new sf::Context());
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52 context_->SetActive(true);
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54 if (glewInit() != GLEW_OK)
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55 BOOST_THROW_EXCEPTION(gl::ogl_exception() << msg_info("Failed to initialize GLEW."));
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57 if(!GLEW_VERSION_3_2)
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58 CASPAR_LOG(warning) << "Missing OpenGL 3.2 support.";
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60 GL(glGenFramebuffers(1, &fbo_));
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61 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));
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62 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));
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63 GL(glDisable(GL_MULTISAMPLE_ARB));
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67 ogl_device::~ogl_device()
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71 BOOST_FOREACH(auto& pool, device_pools_)
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73 BOOST_FOREACH(auto& pool, host_pools_)
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75 glDeleteFramebuffersEXT(1, &fbo_);
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79 safe_ptr<device_buffer> ogl_device::create_device_buffer(size_t width, size_t height, size_t stride)
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81 CASPAR_VERIFY(stride > 0 && stride < 5);
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82 CASPAR_VERIFY(width > 0 && height > 0);
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83 auto& pool = device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];
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84 std::shared_ptr<device_buffer> buffer;
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85 if(!pool->items.try_pop(buffer))
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87 executor_.invoke([&]
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91 buffer.reset(new device_buffer(width, height, stride));
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101 buffer.reset(new device_buffer(width, height, stride));
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105 CASPAR_LOG(error) << L"ogl: create_device_buffer failed!";
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109 }, high_priority);
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112 ++pool->usage_count;
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114 return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*) mutable
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116 pool->items.push(buffer);
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120 safe_ptr<host_buffer> ogl_device::create_host_buffer(size_t size, host_buffer::usage_t usage)
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122 CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);
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123 CASPAR_VERIFY(size > 0);
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124 auto& pool = host_pools_[usage][size];
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125 std::shared_ptr<host_buffer> buffer;
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126 if(!pool->items.try_pop(buffer))
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128 executor_.invoke([&]
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132 buffer.reset(new host_buffer(size, usage));
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133 if(usage == host_buffer::write_only)
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146 buffer.reset(new host_buffer(size, usage));
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147 if(usage == host_buffer::write_only)
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154 CASPAR_LOG(error) << L"ogl: create_host_buffer failed!";
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158 }, high_priority);
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161 ++pool->usage_count;
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163 return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*) mutable
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165 executor_.begin_invoke([=]() mutable
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167 if(usage == host_buffer::write_only)
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172 pool->items.push(buffer);
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173 }, high_priority);
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177 template<typename T>
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178 void flush_pool(buffer_pool<T>& pool)
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180 if(pool.flush_count.fetch_and_increment() < 16)
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183 if(pool.usage_count.fetch_and_store(0) < pool.items.size())
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185 std::shared_ptr<T> buffer;
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186 pool.items.try_pop(buffer);
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189 pool.flush_count = 0;
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190 pool.usage_count = 0;
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193 void ogl_device::flush()
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199 BOOST_FOREACH(auto& pools, device_pools_)
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201 BOOST_FOREACH(auto& pool, pools)
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202 flush_pool(*pool.second);
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204 BOOST_FOREACH(auto& pools, host_pools_)
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206 BOOST_FOREACH(auto& pool, pools)
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207 flush_pool(*pool.second);
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212 CASPAR_LOG_CURRENT_EXCEPTION();
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216 void ogl_device::yield()
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221 boost::unique_future<void> ogl_device::gc()
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223 return begin_invoke([=]
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225 CASPAR_LOG(info) << " ogl: Running GC.";
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229 BOOST_FOREACH(auto& pools, device_pools_)
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231 BOOST_FOREACH(auto& pool, pools)
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232 pool.second->items.clear();
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234 BOOST_FOREACH(auto& pools, host_pools_)
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236 BOOST_FOREACH(auto& pool, pools)
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237 pool.second->items.clear();
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242 CASPAR_LOG_CURRENT_EXCEPTION();
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247 std::wstring ogl_device::get_version()
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249 static std::wstring ver = L"Not found";
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253 ver = widen(tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})
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254 + " " + tmp.invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));
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262 void ogl_device::enable(GLenum cap)
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264 auto& val = caps_[cap];
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272 void ogl_device::disable(GLenum cap)
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274 auto& val = caps_[cap];
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282 void ogl_device::viewport(size_t x, size_t y, size_t width, size_t height)
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284 if(x != viewport_[0] || y != viewport_[1] || width != viewport_[2] || height != viewport_[3])
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286 glViewport(x, y, width, height);
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289 viewport_[2] = width;
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290 viewport_[3] = height;
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294 void ogl_device::scissor(size_t x, size_t y, size_t width, size_t height)
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296 if(x != scissor_[0] || y != scissor_[1] || width != scissor_[2] || height != scissor_[3])
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298 glScissor(x, y, width, height);
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301 scissor_[2] = width;
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302 scissor_[3] = height;
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306 void ogl_device::stipple_pattern(const GLubyte* pattern)
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308 if(pattern_ != pattern)
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310 glPolygonStipple(pattern);
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311 pattern_ = pattern;
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315 void ogl_device::attach(device_buffer& texture)
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317 if(attached_texture_ != texture.id())
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319 GL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + 0, GL_TEXTURE_2D, texture.id(), 0));
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320 attached_texture_ = texture.id();
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324 void ogl_device::clear(device_buffer& texture)
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327 GL(glClear(GL_COLOR_BUFFER_BIT));
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330 void ogl_device::use(shader& shader)
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332 if(active_shader_ != shader.id())
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334 GL(glUseProgramObjectARB(shader.id()));
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335 active_shader_ = shader.id();
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339 void ogl_device::blend_func(int c1, int c2, int a1, int a2)
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341 std::array<int, 4> func = {c1, c2, a1, a2};
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343 if(blend_func_ != func)
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345 blend_func_ = func;
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346 GL(glBlendFuncSeparate(c1, c2, a1, a2));
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350 void ogl_device::blend_func(int c1, int c2)
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352 blend_func(c1, c2, c1, c2);
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