[PATCH vkd3d v2 2/3] tests: Mark NaN conversion as todo on NVIDIA.

[Giovanni Mascellani]

D3D mandates that NaN becomes zero when converted to unsigned[1],
while it doesn't look like that SPIR-V's OpConvertFToU has a similar
provision[2]. In practice, this seems to work on AMD and fails on
NVIDIA, where 0x80000000 is produced instead.

 [1] https://microsoft.github.io/DirectX-Specs/d3d/archive/D3D11_3_FunctionalSpec.htm#22.17.4%20dtou
 [2] https://www.khronos.org/registry/SPIR-V/specs/unified1/SPIRV.html#Conversion

Signed-off-by: Giovanni Mascellani <gmascellani at codeweavers.com>
---
 tests/d3d12.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tests/d3d12.c b/tests/d3d12.c
index 46de3316..5d42a26e 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -9939,6 +9939,7 @@ static void test_shader_instructions(void)
         bool is_float64;
         bool is_todo;
         bool skip_on_warp;
+        bool todo_on_nvidia;
     }
     uint_tests[] =
     {
@@ -10187,8 +10188,8 @@ static void test_shader_instructions(void)
         {&ps_dge, {.d = {{1.5, 1.0}}}, {{0xffffffff}}, true},
         {&ps_dlt, {.d = {{0.0, 1.0}}}, {{0xffffffff}}, true},
         {&ps_dlt, {.d = {{1.0, 1.0}}}, {{0x00000000}}, true},
-        {&ps_dtou, {.d = {{     -NAN}}}, {{ 0,  0 }}, true},
-        {&ps_dtou, {.d = {{      NAN}}}, {{ 0,  0 }}, true},
+        {&ps_dtou, {.d = {{     -NAN}}}, {{ 0,  0 }}, true, false, false, true},
+        {&ps_dtou, {.d = {{      NAN}}}, {{ 0,  0 }}, true, false, false, true},
         {&ps_dtou, {.d = {{-INFINITY}}}, {{ 0, ~0u}}, true},
         {&ps_dtou, {.d = {{ INFINITY}}}, {{~0u, 0 }}, true},
         {&ps_dtou, {.d = {{     -1.0}}}, {{ 0,  1 }}, true},
@@ -10605,6 +10606,7 @@ static void test_shader_instructions(void)
 
         transition_resource_state(command_list, context.render_target,
                 D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_COPY_SOURCE);
+        todo_if(uint_tests[i].todo_on_nvidia && is_nvidia_device(context.device))
         check_sub_resource_uvec4(context.render_target, 0, queue, command_list, &uint_tests[i].output.u);
 
         reset_command_list(command_list, context.allocator);
-- 
2.35.1