diff --git a/Outputs/CRT/Internals/CRTOpenGL.hpp b/Outputs/CRT/Internals/CRTOpenGL.hpp
index b7a8b86e7..3a7035e36 100644
--- a/Outputs/CRT/Internals/CRTOpenGL.hpp
+++ b/Outputs/CRT/Internals/CRTOpenGL.hpp
@@ -183,8 +183,7 @@ class OpenGLOutputBuilder {
 
 		inline uint8_t *allocate_write_area(size_t required_length)
 		{
-			_texture_builder->allocate_write_area(required_length);
-			return _texture_builder->get_write_target();
+			return _texture_builder->allocate_write_area(required_length);
 		}
 
 		inline void reduce_previous_allocation_to(size_t actual_length)
diff --git a/Outputs/CRT/Internals/InputTextureBuilder.cpp b/Outputs/CRT/Internals/InputTextureBuilder.cpp
index 8b3d6103b..2a027ffaa 100644
--- a/Outputs/CRT/Internals/InputTextureBuilder.cpp
+++ b/Outputs/CRT/Internals/InputTextureBuilder.cpp
@@ -20,7 +20,7 @@ InputTextureBuilder::InputTextureBuilder(size_t bytes_per_pixel) :
 	_image.resize(bytes_per_pixel * InputBufferBuilderWidth * InputBufferBuilderHeight);
 }
 
-void InputTextureBuilder::allocate_write_area(size_t required_length)
+uint8_t *InputTextureBuilder::allocate_write_area(size_t required_length)
 {
 	if(_next_write_y_position != InputBufferBuilderHeight)
 	{
@@ -32,7 +32,7 @@ void InputTextureBuilder::allocate_write_area(size_t required_length)
 			_next_write_y_position++;
 
 			if(_next_write_y_position == InputBufferBuilderHeight)
-				return;
+				return nullptr;
 		}
 
 		_write_x_position = _next_write_x_position + 1;
@@ -40,6 +40,9 @@ void InputTextureBuilder::allocate_write_area(size_t required_length)
 		_write_target_pointer = (_write_y_position * InputBufferBuilderWidth) + _write_x_position;
 		_next_write_x_position += required_length + 2;
 	}
+	else return nullptr;
+
+	return &_image[_write_target_pointer * _bytes_per_pixel];
 }
 
 bool InputTextureBuilder::is_full()
@@ -90,11 +93,6 @@ uint16_t InputTextureBuilder::get_and_finalise_current_line()
 	return result;
 }
 
-uint8_t *InputTextureBuilder::get_write_target()
-{
-	return (_next_write_y_position == InputBufferBuilderHeight) ? nullptr : &_image[_write_target_pointer * _bytes_per_pixel];
-}
-
 uint16_t InputTextureBuilder::get_last_write_x_position()
 {
 	return _write_x_position;
diff --git a/Outputs/CRT/Internals/InputTextureBuilder.hpp b/Outputs/CRT/Internals/InputTextureBuilder.hpp
index a42081b9a..5dc930dd5 100644
--- a/Outputs/CRT/Internals/InputTextureBuilder.hpp
+++ b/Outputs/CRT/Internals/InputTextureBuilder.hpp
@@ -31,7 +31,8 @@ class InputTextureBuilder {
 
 		/// Finds the first available space of at least @c required_length pixels in size. Calls must be paired off
 		/// with calls to @c reduce_previous_allocation_to.
-		void allocate_write_area(size_t required_length);
+		/// @returns a pointer to the allocated space if any was available; @c nullptr otherwise.
+		uint8_t *allocate_write_area(size_t required_length);
 
 		/// Announces that the owner is finished with the region created by the most recent @c allocate_write_area
 		/// and indicates that its actual final size was @c actual_length.
@@ -44,14 +45,17 @@ class InputTextureBuilder {
 		/// @returns a pointer to the image data for this texture.
 		uint8_t *get_image_pointer();
 
-		uint8_t *get_write_target();
-
+		/// @returns the start column for the most recent allocated write area.
 		uint16_t get_last_write_x_position();
 
+		/// @returns the row of the most recent allocated write area.
 		uint16_t get_last_write_y_position();
 
+		/// @returns the number of bytes per pixel as supplied to the constructor.
 		size_t get_bytes_per_pixel();
 
+		/// @returns @c true if all future calls to @c allocate_write_area will fail on account of the input texture
+		/// being full; @c false if calls may succeed.
 		bool is_full();
 
 	private: