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- backend update from GZDoom.

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This commit is contained in:
Christoph Oelckers 2021-03-07 13:21:15 +01:00
parent ad8654ed06
commit ee5950e7ad
11 changed files with 164 additions and 136 deletions
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8
source/common/rendering/polyrenderer/drawers/screen_scanline_setup.cpp
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@ -70,11 +70,13 @@ void WriteW(int y, int x0, int x1, const TriDrawTriangleArgs* args, PolyTriangle
mposW = _mm_add_ps(mposW, mstepW);
}
posW += ssecount * stepW;
mstepW = _mm_set_ss(stepW);
for (int x = sseend; x < x1; x++)
{
w[x] = 1.0f / posW;
posW += stepW;
__m128 res = _mm_rcp_ss(mposW);
__m128 muls = _mm_mul_ss(mposW, _mm_mul_ss(res, res));
_mm_store_ss(w + x, _mm_sub_ss(_mm_add_ss(res, res), muls));
mposW = _mm_add_ss(mposW, mstepW);
}
}
#endif