diff options
| -rw-r--r-- | src/glsl/nir/spirv/vtn_glsl450.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/glsl/nir/spirv/vtn_glsl450.c b/src/glsl/nir/spirv/vtn_glsl450.c index 8d730168c08..219a9c7dc5f 100644 --- a/src/glsl/nir/spirv/vtn_glsl450.c +++ b/src/glsl/nir/spirv/vtn_glsl450.c @@ -545,12 +545,14 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSLstd450 entrypoint, return; case GLSLstd450Tanh: - /* (e^x - e^(-x)) / (e^x + e^(-x)) */ + /* (0.5 * (e^x - e^(-x))) / (0.5 * (e^x + e^(-x))) */ val->ssa->def = - nir_fdiv(nb, nir_fsub(nb, build_exp(nb, src[0]), - build_exp(nb, nir_fneg(nb, src[0]))), - nir_fadd(nb, build_exp(nb, src[0]), - build_exp(nb, nir_fneg(nb, src[0])))); + nir_fdiv(nb, nir_fmul(nb, nir_imm_float(nb, 0.5f), + nir_fsub(nb, build_exp(nb, src[0]), + build_exp(nb, nir_fneg(nb, src[0])))), + nir_fmul(nb, nir_imm_float(nb, 0.5f), + nir_fadd(nb, build_exp(nb, src[0]), + build_exp(nb, nir_fneg(nb, src[0]))))); return; case GLSLstd450Asinh: |