mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-10-24 13:52:39 +00:00
a7161b51e0
The nature of this Signed Distance Field based Filter is not to only draw shadows, but to also draw an outline or even glow around a source. Therefore the name "Inner/Outer Shadow (SDF)" does not fit well with the intent of the actual Filter.
502 lines
19 KiB
C++
502 lines
19 KiB
C++
/*
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* Modern effects for a modern Streamer
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* Copyright (C) 2017-2018 Michael Fabian Dirks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "filter-shadow-sdf.hpp"
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#include "strings.hpp"
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// Translation Strings
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#define SOURCE_NAME "Filter.ShadowSDF"
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#define P_INNER "Filter.ShadowSDF.Inner"
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#define P_INNER_RANGE_MINIMUM "Filter.ShadowSDF.Inner.Range.Minimum"
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#define P_INNER_RANGE_MAXIMUM "Filter.ShadowSDF.Inner.Range.Maximum"
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#define P_INNER_OFFSET_X "Filter.ShadowSDF.Inner.Offset.X"
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#define P_INNER_OFFSET_Y "Filter.ShadowSDF.Inner.Offset.Y"
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#define P_INNER_COLOR "Filter.ShadowSDF.Inner.Color"
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#define P_INNER_ALPHA "Filter.ShadowSDF.Inner.Alpha"
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#define P_OUTER "Filter.ShadowSDF.Outer"
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#define P_OUTER_RANGE_MINIMUM "Filter.ShadowSDF.Outer.Range.Minimum"
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#define P_OUTER_RANGE_MAXIMUM "Filter.ShadowSDF.Outer.Range.Maximum"
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#define P_OUTER_OFFSET_X "Filter.ShadowSDF.Outer.Offset.X"
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#define P_OUTER_OFFSET_Y "Filter.ShadowSDF.Outer.Offset.Y"
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#define P_OUTER_COLOR "Filter.ShadowSDF.Outer.Color"
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#define P_OUTER_ALPHA "Filter.ShadowSDF.Outer.Alpha"
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// Initializer & Finalizer
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INITIALIZER(filterShadowFactoryInitializer)
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{
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initializerFunctions.push_back([] { filter::shadow_sdf::shadow_sdf_factory::initialize(); });
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finalizerFunctions.push_back([] { filter::shadow_sdf::shadow_sdf_factory::finalize(); });
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}
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static std::shared_ptr<filter::shadow_sdf::shadow_sdf_factory> factory_instance = nullptr;
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void filter::shadow_sdf::shadow_sdf_factory::initialize()
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{
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factory_instance = std::make_shared<filter::shadow_sdf::shadow_sdf_factory>();
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}
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void filter::shadow_sdf::shadow_sdf_factory::finalize()
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{
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factory_instance.reset();
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}
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std::shared_ptr<filter::shadow_sdf::shadow_sdf_factory> filter::shadow_sdf::shadow_sdf_factory::get()
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{
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return factory_instance;
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}
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bool filter::shadow_sdf::shadow_sdf_instance::cb_modified_inside(void*, obs_properties_t* props, obs_property*,
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obs_data_t* settings)
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{
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bool v = obs_data_get_bool(settings, P_INNER);
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obs_property_set_visible(obs_properties_get(props, P_INNER_RANGE_MINIMUM), v);
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obs_property_set_visible(obs_properties_get(props, P_INNER_RANGE_MAXIMUM), v);
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obs_property_set_visible(obs_properties_get(props, P_INNER_OFFSET_X), v);
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obs_property_set_visible(obs_properties_get(props, P_INNER_OFFSET_Y), v);
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obs_property_set_visible(obs_properties_get(props, P_INNER_COLOR), v);
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obs_property_set_visible(obs_properties_get(props, P_INNER_ALPHA), v);
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return true;
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}
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bool filter::shadow_sdf::shadow_sdf_instance::cb_modified_outside(void*, obs_properties_t* props, obs_property*,
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obs_data_t* settings)
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{
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bool v = obs_data_get_bool(settings, P_OUTER);
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obs_property_set_visible(obs_properties_get(props, P_OUTER_RANGE_MINIMUM), v);
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obs_property_set_visible(obs_properties_get(props, P_OUTER_RANGE_MAXIMUM), v);
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obs_property_set_visible(obs_properties_get(props, P_OUTER_OFFSET_X), v);
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obs_property_set_visible(obs_properties_get(props, P_OUTER_OFFSET_Y), v);
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obs_property_set_visible(obs_properties_get(props, P_OUTER_COLOR), v);
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obs_property_set_visible(obs_properties_get(props, P_OUTER_ALPHA), v);
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return true;
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}
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filter::shadow_sdf::shadow_sdf_instance::shadow_sdf_instance(obs_data_t* settings, obs_source_t* self)
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: m_self(self), m_source_rendered(false)
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{
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this->m_source_rt = std::make_shared<gs::rendertarget>(GS_RGBA, GS_ZS_NONE);
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this->m_sdf_write = std::make_shared<gs::rendertarget>(GS_RGBA32F, GS_ZS_NONE);
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{
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auto op = this->m_sdf_write->render(1, 1);
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}
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this->m_sdf_read = std::make_shared<gs::rendertarget>(GS_RGBA32F, GS_ZS_NONE);
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{
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auto op = this->m_sdf_read->render(1, 1);
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}
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this->update(settings);
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}
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filter::shadow_sdf::shadow_sdf_instance::~shadow_sdf_instance() {}
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obs_properties_t* filter::shadow_sdf::shadow_sdf_instance::get_properties()
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{
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obs_properties_t* props = obs_properties_create();
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obs_property_t* p = nullptr;
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p = obs_properties_add_bool(props, P_INNER, P_TRANSLATE(P_INNER));
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER)));
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obs_property_set_modified_callback2(p, cb_modified_inside, this);
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p = obs_properties_add_float_slider(props, P_INNER_RANGE_MINIMUM, P_TRANSLATE(P_INNER_RANGE_MINIMUM), 0.0, 16.0,
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0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_RANGE_MINIMUM)));
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p = obs_properties_add_float_slider(props, P_INNER_RANGE_MAXIMUM, P_TRANSLATE(P_INNER_RANGE_MAXIMUM), 0.0, 16.0,
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0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_RANGE_MAXIMUM)));
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p = obs_properties_add_float_slider(props, P_INNER_OFFSET_X, P_TRANSLATE(P_INNER_OFFSET_X), -100.0, 100.0, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_OFFSET_X)));
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p = obs_properties_add_float_slider(props, P_INNER_OFFSET_Y, P_TRANSLATE(P_INNER_OFFSET_Y), -100.0, 100.0, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_OFFSET_Y)));
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p = obs_properties_add_color(props, P_INNER_COLOR, P_TRANSLATE(P_INNER_COLOR));
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_COLOR)));
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p = obs_properties_add_float_slider(props, P_INNER_ALPHA, P_TRANSLATE(P_INNER_ALPHA), 0.0, 100.0, 0.1);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_INNER_ALPHA)));
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p = obs_properties_add_bool(props, P_OUTER, P_TRANSLATE(P_OUTER));
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER)));
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obs_property_set_modified_callback2(p, cb_modified_outside, this);
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p = obs_properties_add_float_slider(props, P_OUTER_RANGE_MINIMUM, P_TRANSLATE(P_OUTER_RANGE_MINIMUM), 0.0, 16.0,
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0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_RANGE_MINIMUM)));
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p = obs_properties_add_float_slider(props, P_OUTER_RANGE_MAXIMUM, P_TRANSLATE(P_OUTER_RANGE_MAXIMUM), 0.0, 16.0,
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0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_RANGE_MAXIMUM)));
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p = obs_properties_add_float_slider(props, P_OUTER_OFFSET_X, P_TRANSLATE(P_OUTER_OFFSET_X), -100.0, 100.0, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_OFFSET_X)));
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p = obs_properties_add_float_slider(props, P_OUTER_OFFSET_Y, P_TRANSLATE(P_OUTER_OFFSET_Y), -100.0, 100.0, 0.01);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_OFFSET_Y)));
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p = obs_properties_add_color(props, P_OUTER_COLOR, P_TRANSLATE(P_OUTER_COLOR));
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_COLOR)));
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p = obs_properties_add_float_slider(props, P_OUTER_ALPHA, P_TRANSLATE(P_OUTER_ALPHA), 0.0, 100.0, 0.1);
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obs_property_set_long_description(p, P_TRANSLATE(P_DESC(P_OUTER_ALPHA)));
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return props;
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}
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void filter::shadow_sdf::shadow_sdf_instance::update(obs_data_t* data)
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{
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this->m_inner_shadow = obs_data_get_bool(data, P_INNER);
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this->m_inner_range_min = float_t(obs_data_get_double(data, P_INNER_RANGE_MINIMUM));
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this->m_inner_range_max = float_t(obs_data_get_double(data, P_INNER_RANGE_MAXIMUM));
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if (this->m_inner_range_max < this->m_inner_range_min) {
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std::swap(this->m_inner_range_max, this->m_inner_range_min);
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}
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this->m_inner_offset_x = float_t(obs_data_get_double(data, P_INNER_OFFSET_X));
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this->m_inner_offset_y = float_t(obs_data_get_double(data, P_INNER_OFFSET_Y));
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this->m_inner_color = (obs_data_get_int(data, P_INNER_COLOR) & 0x00FFFFFF)
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| (int32_t(obs_data_get_double(data, P_INNER_ALPHA) * 2.55) << 24);
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this->m_outer_shadow = obs_data_get_bool(data, P_OUTER);
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this->m_outer_range_min = float_t(obs_data_get_double(data, P_OUTER_RANGE_MINIMUM));
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this->m_outer_range_max = float_t(obs_data_get_double(data, P_OUTER_RANGE_MAXIMUM));
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if (this->m_outer_range_max < this->m_outer_range_min) {
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std::swap(this->m_outer_range_max, this->m_outer_range_min);
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}
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this->m_outer_offset_x = float_t(obs_data_get_double(data, P_OUTER_OFFSET_X));
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this->m_outer_offset_y = float_t(obs_data_get_double(data, P_OUTER_OFFSET_Y));
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this->m_outer_color = (obs_data_get_int(data, P_OUTER_COLOR) & 0x00FFFFFF)
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| (int32_t(obs_data_get_double(data, P_OUTER_ALPHA) * 2.55) << 24);
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}
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uint32_t filter::shadow_sdf::shadow_sdf_instance::get_width()
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{
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return uint32_t(0);
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}
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uint32_t filter::shadow_sdf::shadow_sdf_instance::get_height()
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{
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return uint32_t(0);
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}
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void filter::shadow_sdf::shadow_sdf_instance::activate() {}
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void filter::shadow_sdf::shadow_sdf_instance::deactivate() {}
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void filter::shadow_sdf::shadow_sdf_instance::video_tick(float time)
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{
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this->m_tick += time;
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m_source_rendered = false;
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}
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void filter::shadow_sdf::shadow_sdf_instance::video_render(gs_effect_t*)
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{
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obs_source_t* parent = obs_filter_get_parent(this->m_self);
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obs_source_t* target = obs_filter_get_target(this->m_self);
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uint32_t baseW = obs_source_get_base_width(target);
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uint32_t baseH = obs_source_get_base_height(target);
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gs_effect_t* default_effect = obs_get_base_effect(obs_base_effect::OBS_EFFECT_DEFAULT);
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vec4 color_transparent;
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vec4_zero(&color_transparent);
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if (!parent || !target || (baseW == 0) || (baseH == 0)) {
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obs_source_skip_video_filter(this->m_self);
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return;
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}
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try {
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if (!this->m_source_rendered) {
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// Store input texture.
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{
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auto op = m_source_rt->render(baseW, baseH);
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gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
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gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &color_transparent, 0, 0);
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gs_set_cull_mode(GS_NEITHER);
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gs_reset_blend_state();
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gs_enable_blending(false);
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gs_blend_function(GS_BLEND_SRCALPHA, GS_BLEND_ZERO);
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gs_enable_depth_test(false);
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gs_enable_stencil_test(false);
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gs_enable_stencil_write(false);
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gs_enable_color(true, true, true, true);
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if (obs_source_process_filter_begin(this->m_self, GS_RGBA, OBS_ALLOW_DIRECT_RENDERING)) {
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obs_source_process_filter_end(this->m_self, default_effect, baseW, baseH);
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} else {
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throw std::runtime_error("failed to process source");
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}
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}
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m_source_rt->get_texture(this->m_source_texture);
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if (!this->m_source_texture) {
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throw std::runtime_error("failed to draw source");
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}
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// Generate SDF Buffers
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{
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this->m_sdf_read->get_texture(this->m_sdf_texture);
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if (!this->m_sdf_texture) {
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throw std::runtime_error("SDF Backbuffer empty");
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}
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std::shared_ptr<gs::effect> sdf_effect =
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filter::shadow_sdf::shadow_sdf_factory::get()->get_sdf_generator_effect();
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if (!sdf_effect) {
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throw std::runtime_error("SDF Effect no loaded");
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}
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{
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auto op = m_sdf_write->render(baseW, baseH);
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gs_ortho(0, (float)baseW, 0, (float)baseH, -1, 1);
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gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH, &color_transparent, 0, 0);
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gs_set_cull_mode(GS_NEITHER);
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gs_reset_blend_state();
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gs_enable_blending(false);
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gs_enable_depth_test(false);
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gs_enable_stencil_test(false);
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gs_enable_stencil_write(false);
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gs_enable_color(true, true, true, true);
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sdf_effect->get_parameter("_image").set_texture(this->m_source_texture);
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sdf_effect->get_parameter("_size").set_float2(float_t(baseW), float_t(baseH));
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sdf_effect->get_parameter("_sdf").set_texture(this->m_sdf_texture);
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sdf_effect->get_parameter("_threshold").set_float(0.5);
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while (gs_effect_loop(sdf_effect->get_object(), "Draw")) {
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gs_draw_sprite(this->m_sdf_texture->get_object(), 0, baseW, baseH);
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}
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}
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this->m_sdf_write.swap(this->m_sdf_read);
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this->m_sdf_read->get_texture(this->m_sdf_texture);
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if (!this->m_sdf_texture) {
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throw std::runtime_error("SDF Backbuffer empty");
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}
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}
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}
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{
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std::shared_ptr<gs::effect> shadow_effect =
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filter::shadow_sdf::shadow_sdf_factory::get()->get_sdf_shadow_effect();
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if (!shadow_effect) {
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throw std::runtime_error("Shadow Effect no loaded");
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}
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gs_set_cull_mode(GS_NEITHER);
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gs_reset_blend_state();
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gs_enable_blending(true);
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gs_blend_function(GS_BLEND_SRCALPHA, GS_BLEND_INVSRCALPHA);
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gs_enable_depth_test(false);
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gs_enable_stencil_test(false);
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gs_enable_stencil_write(false);
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gs_enable_color(true, true, true, true);
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shadow_effect->get_parameter("_sdf").set_texture(this->m_sdf_texture);
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shadow_effect->get_parameter("_image").set_texture(this->m_source_texture);
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shadow_effect->get_parameter("_threshold").set_float(0.5f);
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if (this->m_inner_shadow) {
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shadow_effect->get_parameter("_inner_min").set_float(this->m_inner_range_min);
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shadow_effect->get_parameter("_inner_max").set_float(this->m_inner_range_max);
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shadow_effect->get_parameter("_inner_offset")
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.set_float2(this->m_inner_offset_x / float_t(baseW), this->m_inner_offset_y / float_t(baseH));
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shadow_effect->get_parameter("_inner_color")
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.set_float4((this->m_inner_color & 0xFF) / 255.0f, ((this->m_inner_color >> 8) & 0xFF) / 255.0f,
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((this->m_inner_color >> 16) & 0xFF) / 255.0f,
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((this->m_inner_color >> 24) & 0xFF) / 255.0f);
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} else {
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shadow_effect->get_parameter("_inner_min").set_float(0.);
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shadow_effect->get_parameter("_inner_max").set_float(0.);
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shadow_effect->get_parameter("_inner_offset").set_float2(0., 0.);
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shadow_effect->get_parameter("_inner_color").set_float4(0., 0., 0., 0.);
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}
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if (this->m_outer_shadow) {
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shadow_effect->get_parameter("_outer_min").set_float(this->m_outer_range_min);
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shadow_effect->get_parameter("_outer_max").set_float(this->m_outer_range_max);
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shadow_effect->get_parameter("_outer_offset")
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.set_float2(this->m_outer_offset_x / float_t(baseW), this->m_outer_offset_y / float_t(baseH));
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shadow_effect->get_parameter("_outer_color")
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.set_float4((this->m_outer_color & 0xFF) / 255.0f, ((this->m_outer_color >> 8) & 0xFF) / 255.0f,
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((this->m_outer_color >> 16) & 0xFF) / 255.0f,
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((this->m_outer_color >> 24) & 0xFF) / 255.0f);
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} else {
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shadow_effect->get_parameter("_outer_min").set_float(0.);
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shadow_effect->get_parameter("_outer_max").set_float(0.);
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shadow_effect->get_parameter("_outer_offset").set_float2(0., 0.);
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shadow_effect->get_parameter("_outer_color").set_float4(0., 0., 0., 0.);
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}
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while (gs_effect_loop(shadow_effect->get_object(), "Draw")) {
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gs_draw_sprite(this->m_source_texture->get_object(), 0, baseW, baseH);
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}
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}
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} catch (...) {
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gs_reset_blend_state();
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gs_enable_depth_test(false);
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obs_source_skip_video_filter(this->m_self);
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return;
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}
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gs_reset_blend_state();
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gs_enable_depth_test(false);
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}
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filter::shadow_sdf::shadow_sdf_factory::shadow_sdf_factory()
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{
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memset(&source_info, 0, sizeof(obs_source_info));
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source_info.id = "obs-stream-effects-filter-shadow-sdf";
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source_info.type = OBS_SOURCE_TYPE_FILTER;
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source_info.output_flags = OBS_SOURCE_VIDEO;
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source_info.get_name = get_name;
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source_info.get_defaults = get_defaults;
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source_info.get_properties = get_properties;
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source_info.create = create;
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source_info.destroy = destroy;
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source_info.update = update;
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source_info.activate = activate;
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source_info.deactivate = deactivate;
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source_info.video_tick = video_tick;
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source_info.video_render = video_render;
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obs_register_source(&source_info);
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}
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filter::shadow_sdf::shadow_sdf_factory::~shadow_sdf_factory() {}
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void filter::shadow_sdf::shadow_sdf_factory::on_list_fill()
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{
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{
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char* file = obs_module_file("effects/sdf-generator.effect");
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try {
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sdf_generator_effect = std::make_shared<gs::effect>(file);
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} catch (std::runtime_error ex) {
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P_LOG_ERROR("<filter-shadow> Loading effect '%s' failed with error(s): %s", file, ex.what());
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}
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bfree(file);
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}
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{
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char* file = obs_module_file("effects/sdf-shadow.effect");
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try {
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sdf_shadow_effect = std::make_shared<gs::effect>(file);
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} catch (std::runtime_error ex) {
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P_LOG_ERROR("<filter-shadow> Loading effect '%s' failed with error(s): %s", file, ex.what());
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}
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bfree(file);
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}
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}
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void filter::shadow_sdf::shadow_sdf_factory::on_list_empty()
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{
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sdf_generator_effect.reset();
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sdf_shadow_effect.reset();
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}
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void* filter::shadow_sdf::shadow_sdf_factory::create(obs_data_t* data, obs_source_t* parent)
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{
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if (get()->sources.empty()) {
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get()->on_list_fill();
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}
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filter::shadow_sdf::shadow_sdf_instance* ptr = new filter::shadow_sdf::shadow_sdf_instance(data, parent);
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get()->sources.push_back(ptr);
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return ptr;
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}
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void filter::shadow_sdf::shadow_sdf_factory::destroy(void* inptr)
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{
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filter::shadow_sdf::shadow_sdf_instance* ptr = reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr);
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get()->sources.remove(ptr);
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if (get()->sources.empty()) {
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get()->on_list_empty();
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}
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delete ptr;
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}
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void filter::shadow_sdf::shadow_sdf_factory::get_defaults(obs_data_t* data)
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{
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obs_data_set_bool(data, P_INNER, false);
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obs_data_set_double(data, P_INNER_RANGE_MINIMUM, 0.0);
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obs_data_set_double(data, P_INNER_RANGE_MAXIMUM, 4.0);
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obs_data_set_double(data, P_INNER_OFFSET_X, 0.0);
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obs_data_set_double(data, P_INNER_OFFSET_Y, 0.0);
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obs_data_set_int(data, P_INNER_COLOR, 0x00000000);
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obs_data_set_double(data, P_INNER_ALPHA, 100.0);
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obs_data_set_bool(data, P_OUTER, false);
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obs_data_set_double(data, P_OUTER_RANGE_MINIMUM, 0.0);
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obs_data_set_double(data, P_OUTER_RANGE_MAXIMUM, 4.0);
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obs_data_set_double(data, P_OUTER_OFFSET_X, 0.0);
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obs_data_set_double(data, P_OUTER_OFFSET_Y, 0.0);
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obs_data_set_int(data, P_OUTER_COLOR, 0x00000000);
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obs_data_set_double(data, P_OUTER_ALPHA, 100.0);
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}
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obs_properties_t* filter::shadow_sdf::shadow_sdf_factory::get_properties(void* inptr)
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{
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return reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->get_properties();
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}
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void filter::shadow_sdf::shadow_sdf_factory::update(void* inptr, obs_data_t* settings)
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{
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reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->update(settings);
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}
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const char* filter::shadow_sdf::shadow_sdf_factory::get_name(void*)
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{
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return P_TRANSLATE(SOURCE_NAME);
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}
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uint32_t filter::shadow_sdf::shadow_sdf_factory::get_width(void* inptr)
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{
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return reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->get_width();
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}
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uint32_t filter::shadow_sdf::shadow_sdf_factory::get_height(void* inptr)
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{
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return reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->get_height();
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}
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|
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void filter::shadow_sdf::shadow_sdf_factory::activate(void* inptr)
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{
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reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->activate();
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}
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|
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void filter::shadow_sdf::shadow_sdf_factory::deactivate(void* inptr)
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{
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reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->deactivate();
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}
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|
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void filter::shadow_sdf::shadow_sdf_factory::video_tick(void* inptr, float delta)
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{
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reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->video_tick(delta);
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}
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|
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void filter::shadow_sdf::shadow_sdf_factory::video_render(void* inptr, gs_effect_t* effect)
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{
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reinterpret_cast<filter::shadow_sdf::shadow_sdf_instance*>(inptr)->video_render(effect);
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}
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|
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std::shared_ptr<gs::effect> filter::shadow_sdf::shadow_sdf_factory::get_sdf_generator_effect()
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{
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return sdf_generator_effect;
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}
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|
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std::shared_ptr<gs::effect> filter::shadow_sdf::shadow_sdf_factory::get_sdf_shadow_effect()
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{
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return sdf_shadow_effect;
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}
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