#include <core/producer/frame/pixel_format.h>\r
#include <core/video_format.h>\r
\r
+#include <gl/glew.h>\r
+\r
#include <boost/foreach.hpp>\r
#include <boost/range.hpp>\r
+#include <boost/range/algorithm/find.hpp>\r
\r
#include <algorithm>\r
#include <array>\r
+#include <deque>\r
#include <unordered_map>\r
\r
namespace caspar { namespace core {\r
\r
struct image_mixer::implementation : boost::noncopyable\r
{ \r
- typedef std::deque<render_item> layer;\r
+ typedef std::deque<render_item> layer;\r
\r
- video_channel_context& channel_;\r
+ video_channel_context& channel_;\r
\r
- std::vector<image_transform> transform_stack_;\r
- std::vector<video_mode::type> mode_stack_;\r
+ std::vector<image_transform> transform_stack_;\r
+ std::vector<video_mode::type> mode_stack_;\r
\r
- std::queue<std::deque<render_item>> layers_; // layer/stream/items\r
+ std::deque<std::deque<render_item>> layers_; // layer/stream/items\r
\r
- image_kernel kernel_;\r
+ image_kernel kernel_;\r
\r
- std::array<std::shared_ptr<device_buffer>,2> draw_buffer_;\r
- std::shared_ptr<device_buffer> write_buffer_;\r
+ std::shared_ptr<device_buffer> draw_buffer_;\r
+ std::shared_ptr<device_buffer> write_buffer_;\r
+\r
+ std::shared_ptr<device_buffer> local_key_buffer_;\r
+ std::shared_ptr<device_buffer> layer_key_buffer_;\r
\r
- std::array<std::shared_ptr<device_buffer>,2> stream_key_buffer_;\r
- std::shared_ptr<device_buffer> layer_key_buffer_;\r
+ std::shared_ptr<host_buffer> empty_buffer_;\r
\r
public:\r
implementation(video_channel_context& video_channel) \r
: channel_(video_channel)\r
+ , transform_stack_(1)\r
+ , mode_stack_(1, video_mode::progressive)\r
{\r
initialize_buffers();\r
- transform_stack_.push_back(image_transform());\r
- mode_stack_.push_back(video_mode::progressive);\r
-\r
- channel_.ogl().invoke([=]\r
- {\r
- if(!GLEE_VERSION_3_0)\r
- CASPAR_LOG(warning) << "Missing OpenGL 3.0 support.";//BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 3.0 support."));\r
- });\r
}\r
\r
~implementation()\r
{\r
write_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
layer_key_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
- draw_buffer_[0] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- draw_buffer_[1] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
- stream_key_buffer_[0] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
- stream_key_buffer_[1] = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
+ draw_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 4);\r
+ local_key_buffer_ = channel_.ogl().create_device_buffer(channel_.get_format_desc().width, channel_.get_format_desc().height, 1);\r
+\r
+ empty_buffer_ = channel_.ogl().create_host_buffer(channel_.get_format_desc().size, host_buffer::write_only);\r
+ memset(empty_buffer_->data(), 0, empty_buffer_->size());\r
+\r
channel_.ogl().gc();\r
}\r
\r
}\r
\r
void visit(core::write_frame& frame)\r
- { \r
+ { \r
+ CASPAR_ASSERT(!layers_.empty());\r
+\r
// Check if frame has been discarded by interlacing\r
if(boost::range::find(mode_stack_, video_mode::upper) != mode_stack_.end() && boost::range::find(mode_stack_, video_mode::lower) != mode_stack_.end())\r
return;\r
\r
- core::render_item item = {frame.get_pixel_format_desc(), frame.get_textures(), transform_stack_.back(), mode_stack_.back(), frame.tag()}; \r
+ core::render_item item(frame.get_pixel_format_desc(), frame.get_textures(), transform_stack_.back(), mode_stack_.back(), frame.tag()); \r
\r
auto& layer = layers_.back();\r
\r
- auto it = boost::range::find(layer, item);\r
- if(it == layer.end())\r
+ if(boost::range::find(layer, item) == layer.end())\r
layer.push_back(item);\r
}\r
\r
\r
void begin_layer()\r
{\r
- layers_.push(layer());\r
+ layers_.push_back(layer());\r
}\r
\r
void end_layer()\r
boost::unique_future<safe_ptr<host_buffer>> render()\r
{ \r
auto layers = std::move(layers_);\r
-\r
- return channel_.ogl().begin_invoke([=]() mutable -> safe_ptr<host_buffer>\r
- { \r
- if(channel_.get_format_desc().width != write_buffer_->width() || channel_.get_format_desc().height != write_buffer_->height())\r
- initialize_buffers();\r
-\r
- return do_render(std::move(layers));\r
- });\r
+ return channel_.ogl().begin_invoke([=]()mutable{return render(std::move(layers));});\r
}\r
\r
- safe_ptr<host_buffer> do_render(std::queue<layer>&& layers)\r
+ safe_ptr<host_buffer> render(std::deque<layer>&& layers)\r
{\r
- auto read_buffer = channel_.ogl().create_host_buffer(channel_.get_format_desc().size, host_buffer::read_only);\r
-\r
- layer_key_buffer_->clear();\r
- draw_buffer_[0]->clear();\r
- draw_buffer_[1]->clear();\r
- stream_key_buffer_[0]->clear();\r
- stream_key_buffer_[1]->clear();\r
+ if(layers.empty())\r
+ return make_safe(empty_buffer_);\r
\r
- bool local_key = false;\r
+ if(channel_.get_format_desc().width != write_buffer_->width() || channel_.get_format_desc().height != write_buffer_->height())\r
+ initialize_buffers();\r
+ \r
+ channel_.ogl().clear(*layer_key_buffer_);\r
+ channel_.ogl().clear(*local_key_buffer_);\r
+ channel_.ogl().clear(*draw_buffer_);\r
+ \r
bool layer_key = false;\r
+ \r
+ BOOST_FOREACH(auto& layer, layers)\r
+ draw(std::move(layer), layer_key);\r
\r
- while(!layers.empty())\r
- { \r
- stream_key_buffer_[0]->clear();\r
-\r
- auto layer = std::move(layers.front());\r
- layers.pop();\r
- \r
- while(!layer.empty())\r
- {\r
- auto item = std::move(layer.front());\r
- layer.pop_front();\r
- \r
- if(item.transform.get_is_key())\r
- {\r
- render_item(stream_key_buffer_, std::move(item), nullptr, nullptr);\r
- local_key = true;\r
- }\r
- else\r
- {\r
- render_item(draw_buffer_, std::move(item), local_key ? stream_key_buffer_[0] : nullptr, layer_key ? layer_key_buffer_ : nullptr); \r
- stream_key_buffer_[0]->clear();\r
- local_key = false;\r
- }\r
- channel_.ogl().yield(); // Return resources to pool as early as possible.\r
- }\r
-\r
- layer_key = local_key;\r
- local_key = false;\r
- std::swap(stream_key_buffer_[0], layer_key_buffer_);\r
- }\r
+ std::swap(draw_buffer_, write_buffer_);\r
+ \r
+ auto host_buffer = channel_.ogl().create_host_buffer(channel_.get_format_desc().size, host_buffer::read_only);\r
+ \r
+ channel_.ogl().attach(*write_buffer_);\r
+ host_buffer->begin_read(write_buffer_->width(), write_buffer_->height(), format(write_buffer_->stride()));\r
+ \r
+ GL(glFlush());\r
+ \r
+ return host_buffer;\r
+ }\r
\r
- std::swap(draw_buffer_[0], write_buffer_);\r
+ void draw(layer&& layer, bool& layer_key)\r
+ { \r
+ bool local_key = false;\r
+ \r
+ channel_.ogl().clear(*local_key_buffer_);\r
\r
- // device -> host. \r
- write_buffer_->write(*read_buffer);\r
+ BOOST_FOREACH(auto& item, layer)\r
+ draw(std::move(item), local_key, layer_key);\r
+ \r
+ layer_key = local_key;\r
\r
- return read_buffer;\r
+ std::swap(local_key_buffer_, layer_key_buffer_);\r
+ }\r
+\r
+ void draw(render_item&& item, bool& local_key, bool& layer_key)\r
+ { \r
+ if(item.transform.get_is_key())\r
+ {\r
+ draw(local_key_buffer_, std::move(item), nullptr, nullptr);\r
+ local_key = true;\r
+ }\r
+ else\r
+ {\r
+ draw(draw_buffer_, std::move(item), local_key ? local_key_buffer_ : nullptr, layer_key ? layer_key_buffer_ : nullptr); \r
+ channel_.ogl().clear(*local_key_buffer_);\r
+ local_key = false;\r
+ }\r
}\r
\r
- void render_item(std::array<std::shared_ptr<device_buffer>,2>& targets, render_item&& item, const std::shared_ptr<device_buffer>& local_key, const std::shared_ptr<device_buffer>& layer_key)\r
+ void draw(std::shared_ptr<device_buffer>& target, render_item&& item, const std::shared_ptr<device_buffer>& local_key, const std::shared_ptr<device_buffer>& layer_key)\r
{\r
- targets[1]->attach();\r
- \r
- kernel_.draw(item, make_safe(targets[0]), local_key, layer_key);\r
- \r
- targets[0]->bind();\r
+ if(!std::all_of(item.textures.begin(), item.textures.end(), std::mem_fn(&device_buffer::ready)))\r
+ {\r
+ CASPAR_LOG(warning) << L"[image_mixer] Performance warning. Host to device transfer not complete, GPU will be stalled";\r
+ channel_.ogl().yield(); // Try to give it some more time.\r
+ } \r
\r
- glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, targets[0]->width(), targets[0]->height());\r
- \r
- std::swap(targets[0], targets[1]);\r
+ kernel_.draw(channel_.ogl(), std::move(item), make_safe(target), local_key, layer_key);\r
}\r
\r
safe_ptr<write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc)\r
projects / casparcg / blobdiff