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Partly restore behaviour from c17b80e9

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The subtraction was inverted, but change back the behaviour too:
Hardcode offsets and check via asserts() in Debug builds.
This commit is contained in:
dhewg 2011-12-15 18:52:34 +01:00 committed by Daniel Gibson
parent a7b3b9fb0b
commit 4f90a1db12
1 changed files with 8 additions and 6 deletions
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14
idlib/math/Simd_SSE.cpp
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@ -41,12 +41,12 @@ If you have questions concerning this license or the applicable additional terms
//===============================================================
#define DRAWVERT_SIZE 60
#define DRAWVERT_XYZ_OFFSET (ptrdiff_t(src) - ptrdiff_t(&src->xyz))
#define DRAWVERT_ST_OFFSET (ptrdiff_t(src) - ptrdiff_t(&src->st))
#define DRAWVERT_NORMAL_OFFSET (ptrdiff_t(src) - ptrdiff_t(&src->normal))
#define DRAWVERT_TANGENT0_OFFSET (ptrdiff_t(src) - ptrdiff_t(&src->tangents[0]))
#define DRAWVERT_TANGENT1_OFFSET (ptrdiff_t(src) - ptrdiff_t(&src->tangents[1]))
#define DRAWVERT_COLOR_OFFSET (ptrdiff_t(src) - ptrdiff_t(&src->color))
#define DRAWVERT_XYZ_OFFSET (0*4)
#define DRAWVERT_ST_OFFSET (3*4)
#define DRAWVERT_NORMAL_OFFSET (5*4)
#define DRAWVERT_TANGENT0_OFFSET (8*4)
#define DRAWVERT_TANGENT1_OFFSET (11*4)
#define DRAWVERT_COLOR_OFFSET (14*4)
#if defined(__GNUC__) && defined(__SSE__)
@ -92,6 +92,7 @@ void VPCALL idSIMD_SSE::Dot( float *dst, const idPlane &constant, const idDrawVe
char *dst_p = (char *) dst; // dst_p = ecx
assert( sizeof( idDrawVert ) == DRAWVERT_SIZE );
assert( ptrdiff_t(&src->xyz) - ptrdiff_t(src) == DRAWVERT_XYZ_OFFSET );
/*
and eax, ~3
@ -254,6 +255,7 @@ idSIMD_SSE::MinMax
void VPCALL idSIMD_SSE::MinMax( idVec3 &min, idVec3 &max, const idDrawVert *src, const int *indexes, const int count ) {
assert( sizeof( idDrawVert ) == DRAWVERT_SIZE );
assert( ptrdiff_t(&src->xyz) - ptrdiff_t(src) == DRAWVERT_XYZ_OFFSET );
__m128 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7;
char *indexes_p;