diff options
author | Zack Rusin <zack@tungstengraphics.com> | 2008-05-16 17:10:52 -0400 |
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committer | Zack Rusin <zack@tungstengraphics.com> | 2008-05-17 13:58:44 -0400 |
commit | 02e45b2dadd42c38247cb992a07eb520ac86519b (patch) | |
tree | 29842ca21e94e322862629f1cfa10ab62f584458 /src/gallium/auxiliary/gallivm/soabuiltins.c | |
parent | 1d1cf8edf6a0409caf9aa7d44e186eb51f51fa1f (diff) |
fix abs and start on rsq
Diffstat (limited to 'src/gallium/auxiliary/gallivm/soabuiltins.c')
-rw-r--r-- | src/gallium/auxiliary/gallivm/soabuiltins.c | 56 |
1 files changed, 37 insertions, 19 deletions
diff --git a/src/gallium/auxiliary/gallivm/soabuiltins.c b/src/gallium/auxiliary/gallivm/soabuiltins.c index b3bfebfe50..64c02aa967 100644 --- a/src/gallium/auxiliary/gallivm/soabuiltins.c +++ b/src/gallium/auxiliary/gallivm/soabuiltins.c @@ -36,28 +36,24 @@ typedef __attribute__(( ext_vector_type(4) )) float float4; extern float fabsf(float val); +float4 absvec(float4 vec) +{ + float4 res; + res.x = fabsf(vec.x); + res.y = fabsf(vec.y); + res.z = fabsf(vec.z); + res.w = fabsf(vec.w); + + return res; +} + void abs(float4 *res, float4 tmp0x, float4 tmp0y, float4 tmp0z, float4 tmp0w) { - res[0].x = fabsf(tmp0x.x); - res[0].y = fabsf(tmp0x.y); - res[0].z = fabsf(tmp0x.z); - res[0].w = fabsf(tmp0x.w); - - res[1].x = fabsf(tmp0y.x); - res[1].y = fabsf(tmp0y.y); - res[1].z = fabsf(tmp0y.z); - res[1].w = fabsf(tmp0y.w); - - res[2].x = fabsf(tmp0z.x); - res[2].y = fabsf(tmp0z.y); - res[2].z = fabsf(tmp0z.z); - res[2].w = fabsf(tmp0z.w); - - res[3].x = fabsf(tmp0w.x); - res[3].y = fabsf(tmp0w.y); - res[3].z = fabsf(tmp0w.z); - res[3].w = fabsf(tmp0w.w); + res[0] = absvec(tmp0x); + res[1] = absvec(tmp0y); + res[2] = absvec(tmp0z); + res[3] = absvec(tmp0w); } void dp3(float4 *res, @@ -88,6 +84,7 @@ void dp4(float4 *res, } extern float powf(float num, float p); +extern float sqrtf(float x); float4 powvec(float4 vec, float4 q) { @@ -168,3 +165,24 @@ void lit(float4 *res, } res[3] = (float4){1.0, 1.0, 1.0, 1.0}; } + + +float4 sqrtvec(float4 vec) +{ + float4 p; + p.x = sqrtf(vec.x); + p.y = sqrtf(vec.y); + p.z = sqrtf(vec.z); + p.w = sqrtf(vec.w); + return p; +} + +void rsq(float4 *res, + float4 tmp0x, float4 tmp0y, float4 tmp0z, float4 tmp0w) +{ + const float4 onevec = (float4) {1., 1., 1., 1.}; + res[0] = onevec/sqrtvec(absvec(tmp0x)); + res[1] = res[0]; + res[2] = res[0]; + res[3] = res[0]; +} |