Add .reset to clarify intent.

Outputs/OpenGL/Primitives/Shader.hpp

@@ -69,6 +69,9 @@ public:
 	Shader &operator =(Shader &&);
 	Shader() = default;
 
+	Shader(const Shader&) = delete;
+	Shader &operator =(const Shader &) = delete;
+
 	/*!
 		Performs an @c glUseProgram to make this the active shader unless:
 			(i) it was the previous shader bound; and
@@ -149,6 +152,10 @@ public:
 		return shader_program_ == 0;
 	}
 
+	void reset() {
+		*this = Shader();
+	}
+
 private:
 	void init(
 		const std::string &vertex_shader,

Outputs/OpenGL/Primitives/TextureTarget.hpp

@@ -41,6 +41,9 @@ public:
 	TextureTarget(TextureTarget &&);
 	TextureTarget &operator =(TextureTarget &&);
 
+	TextureTarget(const TextureTarget &) = delete;
+	TextureTarget &operator =(const TextureTarget &) = delete;
+
 	/*!
 		Binds this target as a framebuffer and sets the @c glViewport accordingly.
 	*/
@@ -69,6 +72,10 @@ public:
 		return framebuffer_ == 0;
 	}
 
+	void reset() {
+		*this = TextureTarget();
+	}
+
 	/*!
 		Draws this texture to the currently-bound framebuffer, which has the aspect ratio
 		@c aspect_ratio. This texture will fill the height of the frame buffer, and pick

Outputs/OpenGL/ScanTarget.cpp

@@ -314,7 +314,7 @@ void ScanTarget::setup_pipeline() {
 				CompositionTextureUnit
 			);
 		} else {
-			separation_shader_ = OpenGL::Shader();
+			separation_shader_.reset();
 		}
 
 		if(is_composite(modals.display_type) || is_svideo(modals.display_type)) {
@@ -328,7 +328,7 @@ void ScanTarget::setup_pipeline() {
 				is_svideo(modals.display_type) ? CompositionTextureUnit : SeparationTextureUnit
 			);
 		} else {
-			demodulation_shader_ = OpenGL::Shader();
+			demodulation_shader_.reset();
 		}
 	}
 
@@ -346,7 +346,7 @@ void ScanTarget::setup_pipeline() {
 				false
 			);
 		} else {
-			separation_buffer_ = TextureTarget();
+			separation_buffer_.reset();
 		}
 
 		if(is_composite(modals.display_type) || is_svideo(modals.display_type)) {
@@ -359,7 +359,7 @@ void ScanTarget::setup_pipeline() {
 				false
 			);
 		} else {
-			demodulation_buffer_ = TextureTarget();
+			demodulation_buffer_.reset();
 		}
 	}