From 335847945d452d1a527b16f3d09bbbd3b209e727 Mon Sep 17 00:00:00 2001
From: Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
Date: Wed, 7 Aug 2019 17:37:34 +0200
Subject: [PATCH] gfx-effect-source: Allow overriding value and visibility of
 parameters

---
 source/gfx/gfx-effect-source.cpp | 15 +++++++++++++++
 source/gfx/gfx-effect-source.hpp | 12 +++++++++++-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/source/gfx/gfx-effect-source.cpp b/source/gfx/gfx-effect-source.cpp
index f7d4584..a215b0f 100644
--- a/source/gfx/gfx-effect-source.cpp
+++ b/source/gfx/gfx-effect-source.cpp
@@ -726,9 +726,12 @@ void gfx::effect_source::effect_source::load_file(std::string file)
 				break;
 			}
 		}
+		if (_cb_valid)
+			skip = skip || _cb_valid(prm);
 		if (skip)
 			continue;
 
+
 		_params.emplace(identity, parameter::create(_effect, prm));
 	}
 }
@@ -861,6 +864,10 @@ void gfx::effect_source::effect_source::render()
 		}
 	}
 
+	if (_cb_override) {
+		_cb_override(_effect);
+	}
+
 	gs_blend_state_push();
 	gs_matrix_push();
 
@@ -881,3 +888,11 @@ void gfx::effect_source::effect_source::render()
 	gs_matrix_pop();
 	gs_blend_state_pop();
 }
+
+void gfx::effect_source::effect_source::set_valid_property_cb(valid_property_cb_t cb) {
+	_cb_valid = cb;
+}
+
+void gfx::effect_source::effect_source::set_override_cb(param_override_cb_t cb) {
+	_cb_override = cb;
+}
diff --git a/source/gfx/gfx-effect-source.hpp b/source/gfx/gfx-effect-source.hpp
index ccfd5c4..1be6c52 100644
--- a/source/gfx/gfx-effect-source.hpp
+++ b/source/gfx/gfx-effect-source.hpp
@@ -226,7 +226,9 @@ namespace gfx {
 			virtual void assign() override;
 		};
 
-		typedef std::pair<gs::effect_parameter::type, std::string> param_ident_t;
+		typedef std::pair<gs::effect_parameter::type, std::string>               param_ident_t;
+		typedef std::function<bool(std::shared_ptr<gs::effect_parameter> param)> valid_property_cb_t;
+		typedef std::function<void(std::shared_ptr<gs::effect> effect)>          param_override_cb_t;
 
 		class effect_source {
 			std::string                                         _file;
@@ -248,6 +250,9 @@ namespace gfx {
 			std::uniform_real_distribution<float_t> _random_dist{0.f, 1.f};
 			std::default_random_engine              _random_generator;
 
+			valid_property_cb_t _cb_valid;
+			param_override_cb_t _cb_override;
+
 			bool modified2(obs_properties_t* props, obs_property_t* property, obs_data_t* settings);
 
 			void load_file(std::string file);
@@ -263,6 +268,11 @@ namespace gfx {
 			void tick(float_t time);
 
 			void render();
+
+			public:
+			void set_valid_property_cb(valid_property_cb_t cb);
+
+			void set_override_cb(param_override_cb_t cb);
 		};
 	} // namespace effect_source
 } // namespace gfx