Use RG16F for normalized texture

Mistarin · Jul 24, 2022 · d4b06aa · d4b06aa
1 parent ab652e7
commit d4b06aa
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Showing 3 changed files with 15 additions and 6 deletions.
diff --git a/shaders/cMotionBlur.fx b/shaders/cMotionBlur.fx
@@ -118,7 +118,7 @@ namespace MotionBlur
         #endif
     };
 
-    CREATE_TEXTURE(Render_Common_0, int2(BUFFER_WIDTH >> 1, BUFFER_HEIGHT >> 1), RG8, 4)
+    CREATE_TEXTURE(Render_Common_0, int2(BUFFER_WIDTH >> 1, BUFFER_HEIGHT >> 1), RG16F, 6)
     CREATE_SAMPLER(Sample_Common_0, Render_Common_0)
 
     CREATE_TEXTURE(Render_Common_1_A, BUFFER_SIZE_1, RGBA16F, 9)
@@ -372,7 +372,7 @@ namespace MotionBlur
         */
 
         // Create matrix A and solve its window sum
-        float3 A = float3(FP16_SMALLEST_SUBNORMAL, FP16_SMALLEST_SUBNORMAL, 0.0);
+        float3 A = 0.0;
 
         // Create vector B and solve its window sum
         float2 B = 0.0;
@@ -389,6 +389,9 @@ namespace MotionBlur
             B.y += dot(S[i].zw, T[i].xy);
         }
 
+        // Make determinant non-zero
+        A.xy = max(A.xy, FP16_SMALLEST_SUBNORMAL);
+
         // Create -IxIy (A12) for A^-1 and its determinant
         A.z = A.z * (-1.0);
 

diff --git a/shaders/cOpticalFlowLK.fx b/shaders/cOpticalFlowLK.fx
@@ -111,7 +111,7 @@ namespace OpticalFlowLK
         #endif
     };
 
-    CREATE_TEXTURE(Render_Common_0, int2(BUFFER_WIDTH >> 1, BUFFER_HEIGHT >> 1), RG8, 4)
+    CREATE_TEXTURE(Render_Common_0, int2(BUFFER_WIDTH >> 1, BUFFER_HEIGHT >> 1), RG16F, 6)
     CREATE_SAMPLER(Sample_Common_0, Render_Common_0)
 
     CREATE_TEXTURE(Render_Common_1_A, BUFFER_SIZE_1, RGBA16F, 9)
@@ -365,7 +365,7 @@ namespace OpticalFlowLK
         */
 
         // Create matrix A and solve its window sum
-        float3 A = float3(FP16_SMALLEST_SUBNORMAL, FP16_SMALLEST_SUBNORMAL, 0.0);
+        float3 A = 0.0;
 
         // Create vector B and solve its window sum
         float2 B = 0.0;
@@ -382,6 +382,9 @@ namespace OpticalFlowLK
             B.y += dot(S[i].zw, T[i].xy);
         }
 
+        // Make determinant non-zero
+        A.xy = max(A.xy, FP16_SMALLEST_SUBNORMAL);
+
         // Create -IxIy (A12) for A^-1 and its determinant
         A.z = A.z * (-1.0);
 

diff --git a/shaders/kDatamosh.fx b/shaders/kDatamosh.fx
@@ -109,7 +109,7 @@ namespace Datamosh
             MipFilter = LINEAR; \
         };
 
-    CREATE_TEXTURE(Render_Common_0, int2(BUFFER_WIDTH >> 1, BUFFER_HEIGHT >> 1), RG8, 4)
+    CREATE_TEXTURE(Render_Common_0, int2(BUFFER_WIDTH >> 1, BUFFER_HEIGHT >> 1), RG16F, 6)
     CREATE_SAMPLER(Sample_Common_0, Render_Common_0)
 
     CREATE_TEXTURE(Render_Common_1_A, BUFFER_SIZE_1, RGBA16F, 9)
@@ -437,7 +437,7 @@ namespace Datamosh
         */
 
         // Create matrix A and solve its window sum
-        float3 A = float3(FP16_SMALLEST_SUBNORMAL, FP16_SMALLEST_SUBNORMAL, 0.0);
+        float3 A = 0.0;
 
         // Create vector B and solve its window sum
         float2 B = 0.0;
@@ -454,6 +454,9 @@ namespace Datamosh
             B.y += dot(S[i].zw, T[i].xy);
         }
 
+        // Make determinant non-zero
+        A.xy = max(A.xy, FP16_SMALLEST_SUBNORMAL);
+
         // Create -IxIy (A12) for A^-1 and its determinant
         A.z = A.z * (-1.0);