Merge pull request #16110 from unknownbrackets/sse4-normalize

GPU: Fix SSE4 Vec3f normalize
hrydgard · Sep 26, 2022 · 9709984 · 9709984
2 parents 391320d + c80f325
commit 9709984
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/GPU/Math3D.cpp b/GPU/Math3D.cpp
@@ -121,7 +121,8 @@ __m128 SSENormalizeMultiplierSSE2(__m128 v)
 #endif
 __m128 SSENormalizeMultiplierSSE4(__m128 v)
 {
-	return _mm_rsqrt_ps(_mm_dp_ps(v, v, 0xFF));
+	// This is only used for Vec3f, so ignore the 4th component, might be garbage.
+	return _mm_rsqrt_ps(_mm_dp_ps(v, v, 0x77));
 }
 
 __m128 SSENormalizeMultiplier(bool useSSE4, __m128 v)