diff --git a/libraries/render-utils/src/ToneMapAndResampleTask.cpp b/libraries/render-utils/src/ToneMapAndResampleTask.cpp
index 5f3e643a69..b6079ef0a7 100644
--- a/libraries/render-utils/src/ToneMapAndResampleTask.cpp
+++ b/libraries/render-utils/src/ToneMapAndResampleTask.cpp
@@ -33,7 +33,6 @@ void ToneMapAndResample::init(RenderArgs* args) {
     // shared_ptr to gpu::State
     gpu::StatePointer blitState = gpu::StatePointer(new gpu::State());
 
-    // TODO why was this in the upsample task
     blitState->setDepthTest(gpu::State::DepthTest(false, false));
     blitState->setColorWriteMask(true, true, true, true);
 
diff --git a/libraries/render-utils/src/render-utils/toneMappingMirroredX.slp b/libraries/render-utils/src/render-utils/toneMappingMirroredX.slp
deleted file mode 100644
index d4d8ec4b01..0000000000
--- a/libraries/render-utils/src/render-utils/toneMappingMirroredX.slp
+++ /dev/null
@@ -1 +0,0 @@
-VERTEX gpu::vertex::DrawViewportQuadTransformTexcoord
diff --git a/libraries/render-utils/src/toneMappingMirroredX.slf b/libraries/render-utils/src/toneMappingMirroredX.slf
deleted file mode 100644
index 7c510cdc1b..0000000000
--- a/libraries/render-utils/src/toneMappingMirroredX.slf
+++ /dev/null
@@ -1,71 +0,0 @@
-<@include gpu/Config.slh@>
-<$VERSION_HEADER$>
-//  Generated on Sat Oct 24 09:34:37 2015
-//
-//  toneMapping.frag
-//
-//  Draw texture 0 fetched at texcoord.xy
-//
-//  Created by Sam Gateau on 6/22/2015
-//  Copyright 2015 High Fidelity, Inc.
-//
-//  Distributed under the Apache License, Version 2.0.
-//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
-//
-
-<@include render-utils/ShaderConstants.h@>
-
-struct ToneMappingParams {
-    vec4 _exp_2powExp_s0_s1;
-    ivec4 _toneCurve_s0_s1_s2;
-};
-
-const float GAMMA_22 = 2.2;
-const float INV_GAMMA_22 = 1.0 / 2.2;
-const int ToneCurveNone = 0;
-const int ToneCurveGamma22 = 1;
-const int ToneCurveReinhard = 2;
-const int ToneCurveFilmic = 3;
-
-LAYOUT(binding=RENDER_UTILS_BUFFER_TM_PARAMS) uniform toneMappingParamsBuffer {
-    ToneMappingParams params;
-};
-float getTwoPowExposure() {
-    return params._exp_2powExp_s0_s1.y;
-}
-int getToneCurve() {
-    return params._toneCurve_s0_s1_s2.x;
-}
-
-LAYOUT(binding=RENDER_UTILS_TEXTURE_TM_COLOR) uniform sampler2D colorMap;
-
-layout(location=0) in vec2 varTexCoord0;
-layout(location=0) out vec4 outFragColor;
-        
-void main(void) {
-    vec4 fragColorRaw = texture(colorMap, vec2(1 - varTexCoord0.x, varTexCoord0.y));
-    vec3 fragColor = fragColorRaw.xyz;
-
-    vec3 srcColor = fragColor * getTwoPowExposure();
-
-    int toneCurve = getToneCurve();
-    vec3 tonedColor = srcColor;
-    if (toneCurve == ToneCurveFilmic) {
-        vec3 x = max(vec3(0.0), srcColor-0.004);
-        tonedColor = pow((x * (6.2 * x + 0.5)) / (x * (6.2 * x + 1.7) + 0.06), vec3(GAMMA_22));
-    } else if (toneCurve == ToneCurveReinhard) {
-        tonedColor = srcColor/(1.0 + srcColor);
-    } else if (toneCurve == ToneCurveGamma22) {
-        // We use glEnable(GL_FRAMEBUFFER_SRGB), which automatically converts textures from RGB to SRGB
-        // when writing from an RGB framebuffer to an SRGB framebuffer (note that it doesn't do anything
-        // when writing from an SRGB framebuffer to an RGB framebuffer).
-        // Since the conversion happens automatically, we don't need to do anything in this shader
-    } else {
-        // toneCurve == ToneCurveNone
-        // For debugging purposes, we may want to see what the colors look like before the automatic OpenGL 
-        // conversion mentioned above, so we undo it here
-        tonedColor = pow(srcColor, vec3(GAMMA_22));
-    } 
-
-    outFragColor = vec4(tonedColor, 1.0);
-}