gfx/shader: Support for visible and active tracking in parameters

Co-authored-by: Michael Fabian 'Xaymar' Dirks <info@xaymar.com>

source/filters/filter-shader.cpp

@@ -153,6 +153,16 @@ void shader_instance::video_render(gs_effect_t* effect)
 	}
 }
 
+void streamfx::filter::shader::shader_instance::show()
+{
+	_fx->set_visible(true);
+}
+
+void streamfx::filter::shader::shader_instance::hide()
+{
+	_fx->set_visible(false);
+}
+
 void streamfx::filter::shader::shader_instance::activate()
 {
 	_fx->set_active(true);
@@ -170,6 +180,7 @@ shader_factory::shader_factory()
 	_info.output_flags = OBS_SOURCE_VIDEO;
 
 	set_activity_tracking_enabled(true);
+	set_visibility_tracking_enabled(true);
 	finish_setup();
 	register_proxy("obs-stream-effects-filter-shader");
 }

source/filters/filter-shader.hpp

@@ -44,6 +44,9 @@ namespace streamfx::filter::shader {
 		virtual void video_tick(float_t sec_since_last) override;
 		virtual void video_render(gs_effect_t* effect) override;
 
+		void show() override;
+		void hide() override;
+
 		void activate() override;
 		void deactivate() override;
 	};

source/gfx/shader/gfx-shader-param.cpp

@@ -176,6 +176,10 @@ void streamfx::gfx::shader::parameter::update(obs_data_t* settings) {}
 
 void streamfx::gfx::shader::parameter::assign() {}
 
+void streamfx::gfx::shader::parameter::visible(bool visible) {}
+
+void streamfx::gfx::shader::parameter::active(bool active) {}
+
 std::shared_ptr<streamfx::gfx::shader::parameter>
 	streamfx::gfx::shader::parameter::make_parameter(streamfx::obs::gs::effect_parameter param, std::string prefix)
 {

source/gfx/shader/gfx-shader-param.hpp

@@ -80,6 +80,10 @@ namespace streamfx::gfx {
 
 			virtual void assign();
 
+			virtual void visible(bool visible);
+
+			virtual void active(bool enabled);
+
 			public:
 			inline streamfx::obs::gs::effect_parameter get_parameter()
 			{

source/gfx/shader/gfx-shader.cpp

@@ -592,10 +592,23 @@ void streamfx::gfx::shader::shader::set_transition_size(uint32_t w, uint32_t h)
 	}
 }
 
+void streamfx::gfx::shader::shader::set_visible(bool visible)
+{
+	_visible = visible;
+
+	for (auto kv : _shader_params) {
+		kv.second->visible(visible);
+	}
+}
+
 void streamfx::gfx::shader::shader::set_active(bool active)
 {
 	_active = active;
 
+	for (auto kv : _shader_params) {
+		kv.second->active(active);
+	}
+
 	// Recreate Per-Activation-Random values.
 	for (size_t idx = 0; idx < 4; idx++) {
 		_random_values[4 + idx] =

source/gfx/shader/gfx-shader.hpp

@@ -48,6 +48,7 @@ namespace streamfx::gfx {
 			uint32_t    _base_width;
 			uint32_t    _base_height;
 			bool        _active;
+			bool        _visible;
 
 			// Shader
 			streamfx::obs::gs::effect       _shader;
@@ -125,6 +126,8 @@ namespace streamfx::gfx {
 
 			void set_transition_size(uint32_t w, uint32_t h);
 
+			void set_visible(bool visible);
+
 			void set_active(bool active);
 		};
 	} // namespace shader

source/sources/source-shader.cpp

@@ -106,6 +106,16 @@ void shader_instance::video_render(gs_effect_t* effect)
 	_fx->render(effect);
 }
 
+void streamfx::source::shader::shader_instance::show()
+{
+	_fx->set_visible(true);
+}
+
+void streamfx::source::shader::shader_instance::hide()
+{
+	_fx->set_visible(false);
+}
+
 void streamfx::source::shader::shader_instance::activate()
 {
 	_fx->set_active(true);
@@ -123,6 +133,7 @@ shader_factory::shader_factory()
 	_info.output_flags = OBS_SOURCE_VIDEO | OBS_SOURCE_CUSTOM_DRAW;
 
 	set_activity_tracking_enabled(true);
+	set_visibility_tracking_enabled(true);
 	finish_setup();
 	register_proxy("obs-stream-effects-source-shader");
 }

source/sources/source-shader.hpp

@@ -43,6 +43,9 @@ namespace streamfx::source::shader {
 		virtual void video_tick(float_t sec_since_last) override;
 		virtual void video_render(gs_effect_t* effect) override;
 
+		void show() override;
+		void hide() override;
+
 		void activate() override;
 		void deactivate() override;
 	};

source/transitions/transition-shader.cpp

@@ -129,12 +129,14 @@ bool shader_instance::audio_render(uint64_t* ts_out, obs_source_audio_mix* audio
 
 void shader_instance::transition_start()
 {
+	_fx->set_visible(true);
 	_fx->set_active(true);
 }
 
 void shader_instance::transition_stop()
 {
 	_fx->set_active(false);
+	_fx->set_visible(false);
 }
 
 shader_factory::shader_factory()