[PATCH vkd3d] vkd3d: Save and restore the last stencil reference value.

[Rémi Bernon]

This fixes The Turing Test rendering on NVIDIA GPUs.

It also fixes this Vulkan validation error:

  Dynamic stencil reference state not set for this command buffer..
  The Vulkan spec states: If the VkPipeline object bound to the pipeline
  bind point used by this command requires any dynamic state, that state
  must have been set for commandBuffer.

Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
 libs/vkd3d/command.c       | 5 +++++
 libs/vkd3d/vkd3d_private.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/libs/vkd3d/command.c b/libs/vkd3d/command.c
index c6e08744..b0147607 100644
--- a/libs/vkd3d/command.c
+++ b/libs/vkd3d/command.c
@@ -2397,6 +2397,7 @@ static void d3d12_command_list_reset_state(struct d3d12_command_list *list,
 
     list->is_predicated = false;
 
+    list->current_stencil_ref = 0;
     list->current_framebuffer = VK_NULL_HANDLE;
     list->current_pipeline = VK_NULL_HANDLE;
     list->pso_render_pass = VK_NULL_HANDLE;
@@ -2602,6 +2603,8 @@ static bool d3d12_command_list_update_graphics_pipeline(struct d3d12_command_lis
     VK_CALL(vkCmdBindPipeline(list->vk_command_buffer, list->state->vk_bind_point, vk_pipeline));
     list->current_pipeline = vk_pipeline;
 
+    VK_CALL(vkCmdSetStencilReference(list->vk_command_buffer, VK_STENCIL_FRONT_AND_BACK, list->current_stencil_ref));
+
     return true;
 }
 
@@ -3793,6 +3796,8 @@ static void STDMETHODCALLTYPE d3d12_command_list_OMSetStencilRef(ID3D12GraphicsC
 
     TRACE("iface %p, stencil_ref %u.\n", iface, stencil_ref);
 
+    list->current_stencil_ref = stencil_ref;
+
     vk_procs = &list->device->vk_procs;
     VK_CALL(vkCmdSetStencilReference(list->vk_command_buffer, VK_STENCIL_FRONT_AND_BACK, stencil_ref));
 }
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index d9290db7..a5ffbb4b 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -961,6 +961,7 @@ struct d3d12_command_list
 
     bool is_predicated;
 
+    uint32_t current_stencil_ref;
     VkFramebuffer current_framebuffer;
     VkPipeline current_pipeline;
     VkRenderPass pso_render_pass;
-- 
2.24.0