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swrast: fix selection/feedback regression

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This fixes a conform selection/feedback regression introduced by commit
8f4d66c5f8
This commit is contained in:
Brian Paul 2009-08-31 17:54:46 -06:00
parent c0633ddabb
commit a1d3855fb0
1 changed files with 1 additions and 1 deletions
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2
src/mesa/swrast/s_triangle.c
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@ -61,7 +61,7 @@ _swrast_culltriangle( GLcontext *ctx,
GLfloat fy = v2->attrib[FRAG_ATTRIB_WPOS][1] - v0->attrib[FRAG_ATTRIB_WPOS][1];
GLfloat c = ex*fy-ey*fx;
if (c * swrast->_BackfaceSign * swrast->_BackfaceCullSign < 0.0F)
if (c * swrast->_BackfaceSign * swrast->_BackfaceCullSign <= 0.0F)
return GL_FALSE;
return GL_TRUE;