mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-10-24 13:52:39 +00:00
b6d45ce73c
While Gaussian Blur is not a Blur type that really benefits much from linear sampling, it can be used for a slight quality and gpu usage reduction. However for Area and Directional Blur there is a better alternative: Dual Filtering Blur. And as with all other currently implement Linear versions of Blur, only Area and Directional Blur are supported. This type of Gaussian Blur also has the loading hitch that exists in normal Gaussian Blur. Related: #45, #6
138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
// Modern effects for a modern Streamer
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// Copyright (C) 2019 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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#pragma once
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#include <mutex>
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#include <vector>
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#include "gfx-blur-base.hpp"
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#include "obs/gs/gs-effect.hpp"
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#include "obs/gs/gs-rendertarget.hpp"
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#include "obs/gs/gs-texture.hpp"
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namespace gfx {
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namespace blur {
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class gaussian_linear_data {
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std::shared_ptr<::gs::effect> m_effect;
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std::vector<std::vector<float_t>> m_kernels;
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public:
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gaussian_linear_data();
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~gaussian_linear_data();
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std::shared_ptr<::gs::effect> get_effect();
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std::vector<float_t> const& get_kernel(size_t width);
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};
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class gaussian_linear_factory : public ::gfx::blur::ifactory {
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std::mutex m_data_lock;
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std::weak_ptr<::gfx::blur::gaussian_linear_data> m_data;
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public:
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gaussian_linear_factory();
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virtual ~gaussian_linear_factory();
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virtual bool is_type_supported(::gfx::blur::type type) override;
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virtual std::shared_ptr<::gfx::blur::ibase> create(::gfx::blur::type type) override;
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virtual double_t get_min_size(::gfx::blur::type type) override;
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virtual double_t get_step_size(::gfx::blur::type type) override;
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virtual double_t get_max_size(::gfx::blur::type type) override;
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virtual double_t get_min_angle(::gfx::blur::type type) override;
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virtual double_t get_step_angle(::gfx::blur::type type) override;
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virtual double_t get_max_angle(::gfx::blur::type type) override;
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virtual bool is_step_scale_supported(::gfx::blur::type type) override;
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virtual double_t get_min_step_scale_x(::gfx::blur::type type) override;
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virtual double_t get_step_step_scale_x(::gfx::blur::type type) override;
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virtual double_t get_max_step_scale_x(::gfx::blur::type type) override;
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virtual double_t get_min_step_scale_y(::gfx::blur::type type) override;
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virtual double_t get_step_step_scale_y(::gfx::blur::type type) override;
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virtual double_t get_max_step_scale_y(::gfx::blur::type type) override;
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std::shared_ptr<::gfx::blur::gaussian_linear_data> data();
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public: // Singleton
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static ::gfx::blur::gaussian_linear_factory& get();
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};
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class gaussian_linear : public ::gfx::blur::ibase {
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protected:
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std::shared_ptr<::gfx::blur::gaussian_linear_data> m_data;
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double_t m_size;
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std::pair<double_t, double_t> m_step_scale;
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std::shared_ptr<::gs::texture> m_input_texture;
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std::shared_ptr<::gs::rendertarget> m_rendertarget;
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private:
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std::shared_ptr<::gs::rendertarget> m_rendertarget2;
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public:
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gaussian_linear();
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virtual ~gaussian_linear();
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virtual void set_input(std::shared_ptr<::gs::texture> texture) override;
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virtual ::gfx::blur::type get_type() override;
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virtual double_t get_size() override;
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virtual void set_size(double_t width) override;
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virtual void set_step_scale(double_t x, double_t y) override;
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virtual void get_step_scale(double_t& x, double_t& y) override;
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virtual double_t get_step_scale_x() override;
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virtual double_t get_step_scale_y() override;
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virtual std::shared_ptr<::gs::texture> render() override;
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virtual std::shared_ptr<::gs::texture> get() override;
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};
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class gaussian_linear_directional : public ::gfx::blur::gaussian_linear, public ::gfx::blur::ibase_angle {
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double_t m_angle;
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public:
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gaussian_linear_directional();
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virtual ~gaussian_linear_directional();
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virtual ::gfx::blur::type get_type() override;
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virtual double_t get_angle() override;
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virtual void set_angle(double_t angle) override;
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virtual std::shared_ptr<::gs::texture> render() override;
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};
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} // namespace blur
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} // namespace gfx
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