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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20 #include "../../stdafx.h"
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22 #include "ogl_device.h"
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24 #include <common/utility/assert.h>
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25 #include <common/gl/gl_check.h>
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27 #include <boost/foreach.hpp>
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29 namespace caspar { namespace core {
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31 ogl_device::ogl_device() : executor_(L"ogl_device")
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35 context_.reset(new sf::Context());
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36 context_->SetActive(true);
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38 if(!GLEE_VERSION_3_0)
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39 BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 3.0 support."));
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41 GL(glGenFramebuffers(1, &fbo_));
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42 GL(glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo_));
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43 GL(glReadBuffer(GL_COLOR_ATTACHMENT0_EXT));
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47 ogl_device::~ogl_device()
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51 BOOST_FOREACH(auto& pool, device_pools_)
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53 BOOST_FOREACH(auto& pool, host_pools_)
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55 glDeleteFramebuffersEXT(1, &fbo_);
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59 safe_ptr<device_buffer> ogl_device::do_create_device_buffer(size_t width, size_t height, size_t stride)
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61 CASPAR_VERIFY(stride > 0 && stride < 5);
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62 CASPAR_VERIFY(width > 0 && height > 0);
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63 auto pool = &device_pools_[stride-1][((width << 16) & 0xFFFF0000) | (height & 0x0000FFFF)];
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64 std::shared_ptr<device_buffer> buffer;
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65 if(!pool->try_pop(buffer))
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67 executor_.invoke([&]
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69 buffer = std::make_shared<device_buffer>(width, height, stride);
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71 if(glGetError() != GL_NO_ERROR)
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72 BOOST_THROW_EXCEPTION(std::bad_alloc());
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75 executor_.begin_invoke([=]
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77 auto buffer = std::make_shared<device_buffer>(width, height, stride);
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78 pool->try_push(buffer);
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82 return safe_ptr<device_buffer>(buffer.get(), [=](device_buffer*){pool->push(buffer);});
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85 safe_ptr<host_buffer> ogl_device::do_create_host_buffer(size_t size, host_buffer::usage_t usage)
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87 CASPAR_VERIFY(usage == host_buffer::write_only || usage == host_buffer::read_only);
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88 CASPAR_VERIFY(size > 0);
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89 auto pool = &host_pools_[usage][size];
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90 std::shared_ptr<host_buffer> buffer;
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91 if(!pool->try_pop(buffer))
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93 executor_.invoke([&]
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95 buffer = std::make_shared<host_buffer>(size, usage);
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96 if(usage == host_buffer::write_only)
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101 if(glGetError() != GL_NO_ERROR)
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102 BOOST_THROW_EXCEPTION(std::bad_alloc());
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104 }, high_priority);
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105 executor_.begin_invoke([=]
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107 auto buffer = std::make_shared<host_buffer>(size, usage);
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108 if(usage == host_buffer::write_only)
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112 pool->try_push(buffer);
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113 }, high_priority);
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116 return safe_ptr<host_buffer>(buffer.get(), [=](host_buffer*)
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118 executor_.begin_invoke([=]
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120 if(usage == host_buffer::write_only)
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125 if(glGetError() == GL_NO_ERROR)
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126 pool->push(buffer);
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131 std::wstring ogl_device::get_version()
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133 return widen(invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VERSION)));})
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134 + " " + invoke([]{return std::string(reinterpret_cast<const char*>(glGetString(GL_VENDOR)));}));
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