Vulkan: Use reversed depth range in viewport

Also adds a DriverDetails bug to disable on drivers where this is still
broken.

1 files changed, 7 insertions, 2 deletions

diff --git a/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp b/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
index 1f0955c921..46ce571bd5 100644
--- a/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
+++ b/Source/Core/VideoBackends/Vulkan/VulkanContext.cpp
@@ -272,6 +272,7 @@ void VulkanContext::PopulateBackendInfo(VideoConfig* config)
   config->backend_info.bSupportsPostProcessing = true;             // Assumed support.
   config->backend_info.bSupportsBackgroundCompiling = true;        // Assumed support.
   config->backend_info.bSupportsCopyToVram = true;                 // Assumed support.
+  config->backend_info.bSupportsReversedDepthRange = true;         // Assumed support.
   config->backend_info.bSupportsDualSourceBlend = false;           // Dependent on features.
   config->backend_info.bSupportsGeometryShaders = false;           // Dependent on features.
   config->backend_info.bSupportsGSInstancing = false;              // Dependent on features.
@@ -283,8 +284,7 @@ void VulkanContext::PopulateBackendInfo(VideoConfig* config)
   config->backend_info.bSupportsBPTCTextures = false;              // Dependent on features.
   config->backend_info.bSupportsLogicOp = false;                   // Dependent on features.
   config->backend_info.bSupportsLargePoints = false;               // Dependent on features.
-  config->backend_info.bSupportsReversedDepthRange = false;  // No support yet due to driver bugs.
-  config->backend_info.bSupportsFramebufferFetch = false;    // No support.
+  config->backend_info.bSupportsFramebufferFetch = false;          // No support.
 }
 
 void VulkanContext::PopulateBackendInfoAdapters(VideoConfig* config, const GPUList& gpu_list)
@@ -340,6 +340,11 @@ void VulkanContext::PopulateBackendInfoFeatures(VideoConfig* config, VkPhysicalD
   // Seems to be fine on GCN Gen 1-2, unconfirmed on GCN Gen 3, causes driver resets on GCN Gen 4.
   if (DriverDetails::HasBug(DriverDetails::BUG_PRIMITIVE_RESTART))
     config->backend_info.bSupportsPrimitiveRestart = false;
+
+  // Reversed depth range is broken on some drivers, or is broken when used in combination
+  // with depth clamping. Fall back to inverted depth range for these.
+  if (DriverDetails::HasBug(DriverDetails::BUG_BROKEN_REVERSED_DEPTH_RANGE))
+    config->backend_info.bSupportsReversedDepthRange = false;
 }
 
 void VulkanContext::PopulateBackendInfoMultisampleModes(