diff --git a/src/projectM-engine/Pipeline.cpp b/src/projectM-engine/Pipeline.cpp
index 4bf8da14c..7d32c6f12 100644
--- a/src/projectM-engine/Pipeline.cpp
+++ b/src/projectM-engine/Pipeline.cpp
@@ -7,6 +7,6 @@
 #include "Pipeline.hpp"
 
 Pipeline::Pipeline() {}
-void Pipeline::Render(BeatDetect &music, PipelineContext &context){}
-Point Pipeline::PerPixel(Point p, PerPixelContext context)
+void Pipeline::Render(const BeatDetect &music, const PipelineContext &context){}
+Point Pipeline::PerPixel(Point p, const PerPixelContext context)
 {return p;}
diff --git a/src/projectM-engine/Pipeline.hpp b/src/projectM-engine/Pipeline.hpp
index 6b3c8dc00..62e7606db 100644
--- a/src/projectM-engine/Pipeline.hpp
+++ b/src/projectM-engine/Pipeline.hpp
@@ -23,7 +23,7 @@ public:
 	 std::vector<RenderItem*> compositeDrawables;
 
 	 Pipeline();
-	 virtual void Render(BeatDetect &music, PipelineContext &context);
+	 virtual void Render(const BeatDetect &music, const PipelineContext &context);
 	 virtual Point PerPixel(Point p, PerPixelContext context);
 };
 
diff --git a/src/projectM-engine/RovastarDriftingChaos.hpp b/src/projectM-engine/RovastarDriftingChaos.hpp
index d77d250c7..0066d91cc 100644
--- a/src/projectM-engine/RovastarDriftingChaos.hpp
+++ b/src/projectM-engine/RovastarDriftingChaos.hpp
@@ -6,10 +6,8 @@
  */
 
 #include "Pipeline.hpp"
-#include "math.h"
 #include "MilkdropCompatability.hpp"
 #include "Transformation.hpp"
-#include <stdlib.h>
 
 
 class RovastarDriftingChaos : public Pipeline
@@ -63,7 +61,7 @@ public:
 	float xamptarg, q8, oldq8, q7, xpos, ypos,xdir, xspeed, xamp, yamp, yamptarg,yspeed,ydir;
 	float dx, dy, angle;
 
-	virtual void Render(BeatDetect &music, PipelineContext &context)
+	virtual void Render(const BeatDetect &music, const PipelineContext &context)
 	{
 
 		float volume = 0.15*(music.bass+music.bass_att+music.treb+music.treb_att+music.mid+music.mid_att);
@@ -123,7 +121,7 @@ public:
 
 	}
 
-	virtual Point PerPixel(Point p, PerPixelContext context)
+	virtual Point PerPixel(Point p, const PerPixelContext context)
 	{
 		Transforms::Zoom(p,context,1+0.05*context.rad,1);
 		Transforms::Transform(p,context,dx,dy);
diff --git a/src/projectM-engine/RovastarFractopiaFrantic.hpp b/src/projectM-engine/RovastarFractopiaFrantic.hpp
index 55fd25479..b5afef4e0 100644
--- a/src/projectM-engine/RovastarFractopiaFrantic.hpp
+++ b/src/projectM-engine/RovastarFractopiaFrantic.hpp
@@ -6,9 +6,7 @@
  */
 
 #include "Pipeline.hpp"
-#include "math.h"
 #include "Transformation.hpp"
-#include <stdlib.h>
 
 
 class RovastarFranticFractopia : public Pipeline
@@ -60,7 +58,7 @@ public:
 		movement = 0.0;
 	}
 
-	virtual void Render(BeatDetect &music, PipelineContext &context)
+	virtual void Render(const BeatDetect &music, const PipelineContext &context)
 	{
 		movement += 0.5*(((music.bass+music.bass_att + 0.075*pow((music.bass+0.6*music.bass_att+0.2*music.treb_att),3)))/(float)context.fps);
 	    if (movement > 10000.0)
@@ -81,7 +79,7 @@ public:
 
 	}
 
-	virtual Point PerPixel(Point p, PerPixelContext context)
+	virtual Point PerPixel(Point p, const PerPixelContext context)
 	{
 		float myy = context.y-(0.250025);
 		float myx = context.x-0.5;
diff --git a/src/projectM-engine/Transformation.hpp b/src/projectM-engine/Transformation.hpp
index 15b204fe0..1542809d9 100644
--- a/src/projectM-engine/Transformation.hpp
+++ b/src/projectM-engine/Transformation.hpp
@@ -9,7 +9,7 @@ class Transforms
 {
 public:
 
-	inline static void Zoom(Point &p, PerPixelContext &context, float zoom, float zoomExponent)
+	inline static void Zoom(Point &p, const PerPixelContext &context, float zoom, float zoomExponent)
 	{
 		float fZoom2 = powf( zoom, powf( zoomExponent, context.rad*2.0f - 1.0f));
 		float fZoom2Inv = 1.0f/fZoom2;
@@ -21,19 +21,19 @@ public:
 		p.y += 0.5;
 	}
 
-	inline static void Transform(Point &p, PerPixelContext &context, float dx, float dy)
+	inline static void Transform(Point &p, const PerPixelContext &context, float dx, float dy)
 	{
 		p.x -= dx;
 		p.y -= dy;
 	}
 
-	inline static void Scale(Point &p, PerPixelContext &context, float sy, float sx, float cx, float cy)
+	inline static void Scale(Point &p, const PerPixelContext &context, float sy, float sx, float cx, float cy)
 	{
 		p.x = (p.x - cx)/sx + cx;
 		p.y = (p.y - cy)/sy + cy;
 	}
 
-	inline static void Rotate(Point &p, PerPixelContext &context, float angle, float cx, float cy)
+	inline static void Rotate(Point &p, const PerPixelContext &context, float angle, float cx, float cy)
 	{
 		float u2 = p.x - cx;
 		float v2 = p.y - cy;
@@ -45,7 +45,7 @@ public:
 		p.y = u2*sin_rot + v2*cos_rot + cy;
 	}
 
-	inline static void Warp(Point &p, PerPixelContext &context, float time, float speed, float scale, float warp)
+	inline static void Warp(Point &p, const PerPixelContext &context, float time, float speed, float scale, float warp)
 	{
 		float fWarpTime = time * speed;
 		float fWarpScaleInv = 1.0f / scale;