Zebediah Figura : vkd3d-shader/spirv: Flush NaN to zero in ftoi.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 257a351f37b7f17d2e80b5557593a9b0a4998963
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/257a351f37b7f17d2e80b5557593a9...

Author: Zebediah Figura 
Date:   Fri Sep  8 13:45:34 2023 -0500

vkd3d-shader/spirv: Flush NaN to zero in ftoi.

---

libs/vkd3d-shader/spirv.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index 7b831d61..4427e64c 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -7004,7 +7004,7 @@ static void spirv_compiler_emit_udiv(struct spirv_compiler *compiler,
 static void spirv_compiler_emit_ftoi(struct spirv_compiler *compiler,
         const struct vkd3d_shader_instruction *instruction)
 {
-    uint32_t src_id, int_min_id, int_max_id, float_max_id, condition_id, val_id;
+    uint32_t src_id, int_min_id, int_max_id, zero_id, float_max_id, condition_id, val_id;
     struct vkd3d_spirv_builder *builder = &compiler->spirv_builder;
     const struct vkd3d_shader_dst_param *dst = instruction->dst;
     const struct vkd3d_shader_src_param *src = instruction->src;
@@ -7035,6 +7035,10 @@ static void spirv_compiler_emit_ftoi(struct spirv_compiler *compiler,
     val_id = vkd3d_spirv_build_op_tr1(builder, &builder->function_stream, SpvOpConvertFToS, dst_type_id, val_id);
     val_id = vkd3d_spirv_build_op_select(builder, dst_type_id, condition_id, int_max_id, val_id);

+    zero_id = spirv_compiler_get_constant_int_vector(compiler, 0, component_count);
+    condition_id = vkd3d_spirv_build_op_tr1(builder, &builder->function_stream, SpvOpIsNan, condition_type_id, src_id);
+    val_id = vkd3d_spirv_build_op_select(builder, dst_type_id, condition_id, zero_id, val_id);
+
     spirv_compiler_emit_store_dst(compiler, dst, val_id);
 }