diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2005-10-30 16:52:02 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2005-10-30 16:52:02 +0000 |
| commit | 094a1ddf2498d598da5abaef6d6ed53ec2dbe6dc (patch) | |
| tree | 4dff82682c117a4324df71d91d4ab3919e0a07e2 | |
| parent | 5d04101d18270eec1692e691b1a4321a0ee3fb10 (diff) | |
need to use absolute value for RSQ
| -rw-r--r-- | src/mesa/swrast/s_nvfragprog.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c index 218abedadf..434f3f5c06 100644 --- a/src/mesa/swrast/s_nvfragprog.c +++ b/src/mesa/swrast/s_nvfragprog.c @@ -1031,10 +1031,11 @@ execute_program( GLcontext *ctx, { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); + a[0] = FABSF(a[0]); result[0] = result[1] = result[2] = result[3] = INV_SQRTF(a[0]); store_vector4( inst, machine, result ); #if DEBUG_FRAG - printf("RSQ %g = 1/sqrt(%g)\n", result[0], a[0]); + printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]); #endif } break; |