Use ACES tone mapping

GlitchyEditor/content/Shaders/ACES.hlsl

@@ -0,0 +1,52 @@
+//=================================================================================================
+//
+//  Baking Lab
+//  by MJP and David Neubelt
+//  http://mynameismjp.wordpress.com/
+//
+//  All code licensed under the MIT license
+//
+//=================================================================================================
+
+// The code in this file was originally written by Stephen Hill (@self_shadow), who deserves all
+// credit for coming up with this fit and implementing it. Buy him a beer next time you see him. :)
+
+// Source: https://github.com/TheRealMJP/BakingLab/blob/master/BakingLab/ACES.hlsl
+
+// sRGB => XYZ => D65_2_D60 => AP1 => RRT_SAT
+static const float3x3 ACESInputMat =
+{
+    {0.59719, 0.35458, 0.04823},
+    {0.07600, 0.90834, 0.01566},
+    {0.02840, 0.13383, 0.83777}
+};
+
+// ODT_SAT => XYZ => D60_2_D65 => sRGB
+static const float3x3 ACESOutputMat =
+{
+    { 1.60475, -0.53108, -0.07367},
+    {-0.10208,  1.10813, -0.00605},
+    {-0.00327, -0.07276,  1.07602}
+};
+
+float3 RRTAndODTFit(float3 v)
+{
+    float3 a = v * (v + 0.0245786f) - 0.000090537f;
+    float3 b = v * (0.983729f * v + 0.4329510f) + 0.238081f;
+    return a / b;
+}
+
+float3 ACESFitted(float3 color)
+{
+    color = mul(ACESInputMat, color);
+
+    // Apply RRT and ODT
+    color = RRTAndODTFit(color);
+
+    color = mul(ACESOutputMat, color);
+
+    // Clamp to [0, 1]
+    color = saturate(color);
+
+    return color;
+}

GlitchyEditor/content/Shaders/SimpleTonemapping.hlsl

@@ -1,3 +1,5 @@
+#include "ACES.hlsl"
+
 Texture2D CameraTarget : register(t0);
 SamplerState CameraTargetSampler : register(s0);
 
@@ -27,7 +29,9 @@ float4 PS(PS_IN input) : SV_TARGET
 {
 	float4 rawColor = CameraTarget.Sample(CameraTargetSampler, input.TexCoord);
 
-	float3 color = rawColor.rgb / (rawColor.rgb + 1.0f);
+	// float3 color = rawColor.rgb / (rawColor.rgb + 1.0f);
+
+	float3 color = ACESFitted(rawColor.rgb);
 	
 	return float4(color, 1);
 }