Use linear epsilon scaling

Mistarin · Jul 9, 2022 · 130a7ab · 130a7ab
1 parent 406b045
commit 130a7ab
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/shaders/cMotionBlur.fx b/shaders/cMotionBlur.fx
@@ -338,7 +338,7 @@ namespace OpticalFlowLK
         S[3] = tex2D(Sample_Common_1_B, TexCoord.zy).xy;
 
         // A.x = Ix^2 (A11); A.y = Iy^2 (A22); A.z = IxIy (A12)
-        float3 A = float3(FP16_MINIMUM, FP16_MINIMUM, 0.0) * pow(4.0, Level);
+        float3 A = ldexp(float3(FP16_MINIMUM, FP16_MINIMUM, 0.0), Level);
         A += (S[0].xyx * S[0].xyy);
         A += (S[1].xyx * S[1].xyy);
         A += (S[2].xyx * S[2].xyy);

diff --git a/shaders/cOpticalFlowLK.fx b/shaders/cOpticalFlowLK.fx
@@ -331,7 +331,7 @@ namespace OpticalFlowLK
         S[3] = tex2D(Sample_Common_1_B, TexCoord.zy).xy;
 
         // A.x = Ix^2 (A11); A.y = Iy^2 (A22); A.z = IxIy (A12)
-        float3 A = float3(FP16_MINIMUM, FP16_MINIMUM, 0.0) * pow(4.0, Level);
+        float3 A = ldexp(float3(FP16_MINIMUM, FP16_MINIMUM, 0.0), Level);
         A += (S[0].xyx * S[0].xyy);
         A += (S[1].xyx * S[1].xyy);
         A += (S[2].xyx * S[2].xyy);