From: eihrul <eihrul@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Sun, 20 Mar 2011 16:00:58 +0000 (+0000)
Subject: saturated bloom subtract
X-Git-Tag: xonotic-v0.6.0~163^2~597
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=a798cbe9ade6c3d59feebb0c2154b8c25f201030;p=xonotic%2Fdarkplaces.git

saturated bloom subtract


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10949 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/dpsoftrast.c b/dpsoftrast.c
index 5d173cbb..969b88d1 100644
--- a/dpsoftrast.c
+++ b/dpsoftrast.c
@@ -2998,14 +2998,14 @@ void DPSOFTRAST_Draw_Span_AddBloomBGRA8(const DPSOFTRAST_State_Triangle * RESTRI
 	{
 		__m128i pix1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&ina4ub[x*4]), _mm_setzero_si128());
 		__m128i pix2 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)&inb4ub[x*4]), _mm_setzero_si128());
-		pix1 = _mm_add_epi16(pix1, _mm_sub_epi16(pix2, localcolor));
+		pix1 = _mm_add_epi16(pix1, _mm_subs_epu16(pix2, localcolor));
 		_mm_storel_epi64((__m128i *)&out4ub[x*4], _mm_packus_epi16(pix1, pix1));
 	}
 	if (x < endx)
 	{
 		__m128i pix1 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(*(const int *)&ina4ub[x*4]), _mm_setzero_si128());
 		__m128i pix2 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(*(const int *)&inb4ub[x*4]), _mm_setzero_si128());
-		pix1 = _mm_add_epi16(pix1, _mm_sub_epi16(pix2, localcolor));
+		pix1 = _mm_add_epi16(pix1, _mm_subs_epu16(pix2, localcolor));
 		*(int *)&out4ub[x*4] = _mm_cvtsi128_si32(_mm_packus_epi16(pix1, pix1));
 	}
 #endif