1 files changed, 23 insertions, 0 deletions

diff --git a/src/video_core/renderer_vulkan/maxwell_to_vk.cpp b/src/video_core/renderer_vulkan/maxwell_to_vk.cpp
index 8681b821f..850165606 100644
--- a/src/video_core/renderer_vulkan/maxwell_to_vk.cpp
+++ b/src/video_core/renderer_vulkan/maxwell_to_vk.cpp
@@ -672,4 +672,27 @@ VkComponentSwizzle SwizzleSource(Tegra::Texture::SwizzleSource swizzle) {
     return {};
 }
 
+VkViewportCoordinateSwizzleNV ViewportSwizzle(Maxwell::ViewportSwizzle swizzle) {
+    switch (swizzle) {
+    case Maxwell::ViewportSwizzle::PositiveX:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_X_NV;
+    case Maxwell::ViewportSwizzle::NegativeX:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_X_NV;
+    case Maxwell::ViewportSwizzle::PositiveY:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_Y_NV;
+    case Maxwell::ViewportSwizzle::NegativeY:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_Y_NV;
+    case Maxwell::ViewportSwizzle::PositiveZ:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_Z_NV;
+    case Maxwell::ViewportSwizzle::NegativeZ:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_Z_NV;
+    case Maxwell::ViewportSwizzle::PositiveW:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_W_NV;
+    case Maxwell::ViewportSwizzle::NegativeW:
+        return VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_W_NV;
+    }
+    UNREACHABLE_MSG("Invalid swizzle={}", static_cast<int>(swizzle));
+    return {};
+}
+
 } // namespace Vulkan::MaxwellToVK