obs-StreamFX/source/gfx/shader/gfx-shader.hpp

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// Modern effects for a modern Streamer
// Copyright (C) 2017 Michael Fabian Dirks
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#pragma once
#include "common.hpp"
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#include <filesystem>
#include <list>
#include <map>
#include <random>
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#include "gfx/shader/gfx-shader-param.hpp"
#include "obs/gs/gs-effect.hpp"
#include "obs/gs/gs-rendertarget.hpp"
namespace gfx {
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namespace shader {
enum class size_type {
Pixel,
Percent,
};
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enum class shader_mode {
Source,
Filter,
Transition,
};
typedef std::map<std::string_view, std::shared_ptr<parameter>> shader_param_map_t;
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class shader {
obs_source_t* _self;
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// Inputs
shader_mode _mode;
uint32_t _base_width;
uint32_t _base_height;
bool _active;
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// Shader
gs::effect _shader;
std::filesystem::path _shader_file;
std::string _shader_tech;
std::filesystem::file_time_type _shader_file_mt;
uintmax_t _shader_file_sz;
float_t _shader_file_tick;
shader_param_map_t _shader_params;
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// Options
size_type _width_type;
double_t _width_value;
size_type _height_type;
double_t _height_value;
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// Cache
bool _have_current_params;
float_t _time;
float_t _time_loop;
int32_t _loops;
std::mt19937_64 _random;
int32_t _random_seed;
float_t _random_values[16]; // 0..4 Per-Instance-Random, 4..8 Per-Activation-Random 9..15 Per-Frame-Random
// Rendering
bool _rt_up_to_date;
std::shared_ptr<gs::rendertarget> _rt;
public:
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shader(obs_source_t* self, shader_mode mode);
~shader();
bool is_shader_different(const std::filesystem::path& file);
bool is_technique_different(const std::string& tech);
bool load_shader(const std::filesystem::path& file, const std::string& tech, bool& shader_dirty,
bool& param_dirty);
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static void defaults(obs_data_t* data);
void properties(obs_properties_t* props);
bool on_refresh_properties(obs_properties_t* props, obs_property_t* prop);
bool on_shader_or_technique_modified(obs_properties_t* props, obs_property_t* prop, obs_data_t* data);
bool update_shader(obs_data_t* data, bool& shader_dirty, bool& param_dirty);
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void update(obs_data_t* data);
uint32_t width();
uint32_t height();
uint32_t base_width();
uint32_t base_height();
bool tick(float_t time);
void prepare_render();
void render(gs_effect* effect);
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public:
void set_size(uint32_t w, uint32_t h);
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void set_input_a(std::shared_ptr<gs::texture> tex);
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void set_input_b(std::shared_ptr<gs::texture> tex);
void set_transition_time(float_t t);
void set_transition_size(uint32_t w, uint32_t h);
void set_active(bool active);
};
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} // namespace shader
} // namespace gfx