Giovanni Mascellani : vkd3d-shader/hlsl: Do not allow NaNs in SM1.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 4d181bc622a832e07fe768d248e35905d682e2d0
URL:    https://source.winehq.org/git/vkd3d.git/?a=commit;h=4d181bc622a832e07fe768d2...

Author: Giovanni Mascellani <gmascellani(a)codeweavers.com>
Date:   Wed Apr 27 10:56:20 2022 +0200

vkd3d-shader/hlsl: Do not allow NaNs in SM1.

Signed-off-by: Giovanni Mascellani <gmascellani(a)codeweavers.com>
Signed-off-by: Zebediah Figura <zfigura(a)codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 libs/vkd3d-shader/hlsl_constant_ops.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl_constant_ops.c b/libs/vkd3d-shader/hlsl_constant_ops.c
index 2e16577f..d8787c21 100644
--- a/libs/vkd3d-shader/hlsl_constant_ops.c
+++ b/libs/vkd3d-shader/hlsl_constant_ops.c
@@ -278,10 +278,10 @@ static bool fold_div(struct hlsl_ctx *ctx, struct hlsl_ir_constant *dst,
                             "Floating point division by zero.");
                 }
                 dst->value[k].f = src1->value[k].f / src2->value[k].f;
-                if (ctx->profile->major_version < 4 && isinf(dst->value[k].f))
+                if (ctx->profile->major_version < 4 && !isfinite(dst->value[k].f))
                 {
                     hlsl_error(ctx, &dst->node.loc, VKD3D_SHADER_ERROR_HLSL_DIVISION_BY_ZERO,
-                            "Infinities are not allowed by the shader model.");
+                            "Infinities and NaNs are not allowed by the shader model.");
                 }
                 break;