diff --git a/tests/d3d12.c b/tests/d3d12.c
index f485ec79..57dfdf6f 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -4358,6 +4358,28 @@ static void test_shader_instructions(void)
         0x00004002, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0100003e,
     };
     static const D3D12_SHADER_BYTECODE ps_ftoi = {ps_ftoi_code, sizeof(ps_ftoi_code)};
+    static const DWORD ps_round_code[] =
+    {
+#if 0
+        float src0;
+
+        void main(out float4 dst : SV_Target)
+        {
+            dst.x = floor(src0);
+            dst.y = ceil(src0);
+            dst.zw = (float2)0;
+        }
+#endif
+        0x43425844, 0x19abb9a8, 0xf5db0887, 0xc9e611d4, 0xe881c7d2, 0x00000001, 0x000000f4, 0x00000003,
+        0x0000002c, 0x0000003c, 0x00000070, 0x4e475349, 0x00000008, 0x00000000, 0x00000008, 0x4e47534f,
+        0x0000002c, 0x00000001, 0x00000008, 0x00000020, 0x00000000, 0x00000000, 0x00000003, 0x00000000,
+        0x0000000f, 0x545f5653, 0x65677261, 0xabab0074, 0x58454853, 0x0000007c, 0x00000050, 0x0000001f,
+        0x0100086a, 0x04000059, 0x00208e46, 0x00000000, 0x00000001, 0x03000065, 0x001020f2, 0x00000000,
+        0x06000041, 0x00102012, 0x00000000, 0x0020800a, 0x00000000, 0x00000000, 0x06000042, 0x00102022,
+        0x00000000, 0x0020800a, 0x00000000, 0x00000000, 0x08000036, 0x001020c2, 0x00000000, 0x00004002,
+        0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x0100003e,
+    };
+    static const D3D12_SHADER_BYTECODE ps_round = {ps_round_code, sizeof(ps_round_code)};
     static const DWORD ps_bfi_code[] =
     {
 #if 0
@@ -4857,6 +4879,14 @@ static void test_shader_instructions(void)
         {&ps_ftoi, {{ INFINITY}}, {.i = {INT_MAX, INT_MIN}}},
         {&ps_ftoi, {{    -1.0f}}, {.i = {     -1,       1}}},
         {&ps_ftoi, {{     1.0f}}, {.i = {      1,      -1}}},
+
+        {&ps_round, {{    -0.5f}}, {{    -1.0f,      0.0f}}},
+        {&ps_round, {{    -0.0f}}, {{    -0.0f,     -0.0f}}},
+        {&ps_round, {{     0.0f}}, {{     0.0f,      0.0f}}},
+        {&ps_round, {{     0.5f}}, {{     0.0f,      1.0f}}},
+        {&ps_round, {{     3.0f}}, {{     3.0f,      3.0f}}},
+        {&ps_round, {{ INFINITY}}, {{ INFINITY,  INFINITY}}},
+        {&ps_round, {{-INFINITY}}, {{-INFINITY, -INFINITY}}},
     };
 
     static const struct