Conor McCarthy : vkd3d: Do not skip all viewports if one is invalid.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 5d724abc9660f13fa77522fc018ebb35836f0dfb
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/5d724abc9660f13fa77522fc018ebb...

Author: Conor McCarthy 
Date:   Thu Apr 20 17:40:00 2023 +1000

vkd3d: Do not skip all viewports if one is invalid.

Fixes blank screen in Assassin's Creed: Valhalla.

---

libs/vkd3d/command.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/libs/vkd3d/command.c b/libs/vkd3d/command.c
index 2662ec04..228429ec 100644
--- a/libs/vkd3d/command.c
+++ b/libs/vkd3d/command.c
@@ -3963,10 +3963,12 @@ static void STDMETHODCALLTYPE d3d12_command_list_RSSetViewports(ID3D12GraphicsCo
         vk_viewports[i].minDepth = viewports[i].MinDepth;
         vk_viewports[i].maxDepth = viewports[i].MaxDepth;

-        if (!vk_viewports[i].width || !vk_viewports[i].height)
+        if (!vk_viewports[i].width)
         {
-            FIXME_ONCE("Invalid viewport %u, ignoring RSSetViewports().\n", i);
-            return;
+            /* Vulkan does not support width <= 0 */
+            FIXME_ONCE("Setting invalid viewport %u to zero height.\n", i);
+            vk_viewports[i].width = 1.0f;
+            vk_viewports[i].height = 0.0f;
         }
     }