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Avoid some division.

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Unknown W. Brackets 2015-05-10 14:39:38 -07:00
parent ea36554c6a
commit b782165b6a
1 changed files with 6 additions and 4 deletions
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10
GPU/Common/SoftwareTransformCommon.cpp
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@ -68,10 +68,12 @@ static void RotateUV(TransformedVertex v[4], float flippedMatrix[16]) {
Vec4f br;
Vec3ByMatrix44(br.AsArray(), v[0].pos, flippedMatrix);
float x1 = tl.x / tl.w;
float x2 = br.x / br.w;
float y1 = tl.y / tl.w;
float y2 = br.y / br.w;
const float invtlw = 1.0f / tl.w;
const float invbrw = 1.0f / br.w;
const float x1 = tl.x * invtlw;
const float x2 = br.x * invbrw;
const float y1 = tl.y * invtlw;
const float y2 = br.y * invbrw;
if ((x1 < x2 && y1 < y2) || (x1 > x2 && y1 > y2))
SwapUVs(v[1], v[3]);