4 files changed, 35 insertions, 0 deletions

diff --git a/src/video_core/vulkan_common/vulkan_device.cpp b/src/video_core/vulkan_common/vulkan_device.cpp
index 18185610f..3960b135a 100644
--- a/src/video_core/vulkan_common/vulkan_device.cpp
+++ b/src/video_core/vulkan_common/vulkan_device.cpp
@@ -1059,6 +1059,13 @@ void Device::RemoveUnsuitableExtensions() {
     RemoveExtensionFeatureIfUnsuitable(extensions.custom_border_color, features.custom_border_color,
                                        VK_EXT_CUSTOM_BORDER_COLOR_EXTENSION_NAME);
 
+    // VK_EXT_depth_bias_control
+    extensions.depth_bias_control =
+        features.depth_bias_control.depthBiasControl &&
+        features.depth_bias_control.leastRepresentableValueForceUnormRepresentation;
+    RemoveExtensionFeatureIfUnsuitable(extensions.depth_bias_control, features.depth_bias_control,
+                                       VK_EXT_DEPTH_BIAS_CONTROL_EXTENSION_NAME);
+
     // VK_EXT_depth_clip_control
     extensions.depth_clip_control = features.depth_clip_control.depthClipControl;
     RemoveExtensionFeatureIfUnsuitable(extensions.depth_clip_control, features.depth_clip_control,
diff --git a/src/video_core/vulkan_common/vulkan_device.h b/src/video_core/vulkan_common/vulkan_device.h
index dd1e7ea8c..9be612392 100644
--- a/src/video_core/vulkan_common/vulkan_device.h
+++ b/src/video_core/vulkan_common/vulkan_device.h
@@ -41,6 +41,7 @@ VK_DEFINE_HANDLE(VmaAllocator)
 // Define all features which may be used by the implementation and require an extension here.
 #define FOR_EACH_VK_FEATURE_EXT(FEATURE)                                                           \
     FEATURE(EXT, CustomBorderColor, CUSTOM_BORDER_COLOR, custom_border_color)                      \
+    FEATURE(EXT, DepthBiasControl, DEPTH_BIAS_CONTROL, depth_bias_control)                         \
     FEATURE(EXT, DepthClipControl, DEPTH_CLIP_CONTROL, depth_clip_control)                         \
     FEATURE(EXT, ExtendedDynamicState, EXTENDED_DYNAMIC_STATE, extended_dynamic_state)             \
     FEATURE(EXT, ExtendedDynamicState2, EXTENDED_DYNAMIC_STATE_2, extended_dynamic_state2)         \
@@ -96,6 +97,7 @@ VK_DEFINE_HANDLE(VmaAllocator)
 #define FOR_EACH_VK_RECOMMENDED_EXTENSION(EXTENSION_NAME)                                          \
     EXTENSION_NAME(VK_EXT_CONDITIONAL_RENDERING_EXTENSION_NAME)                                    \
     EXTENSION_NAME(VK_EXT_CONSERVATIVE_RASTERIZATION_EXTENSION_NAME)                               \
+    EXTENSION_NAME(VK_EXT_DEPTH_BIAS_CONTROL_EXTENSION_NAME)                                       \
     EXTENSION_NAME(VK_EXT_DEPTH_RANGE_UNRESTRICTED_EXTENSION_NAME)                                 \
     EXTENSION_NAME(VK_EXT_EXTENDED_DYNAMIC_STATE_EXTENSION_NAME)                                   \
     EXTENSION_NAME(VK_EXT_EXTENDED_DYNAMIC_STATE_2_EXTENSION_NAME)                                 \
@@ -147,6 +149,9 @@ VK_DEFINE_HANDLE(VmaAllocator)
 // Define features where the absence of the feature may result in a degraded experience.
 #define FOR_EACH_VK_RECOMMENDED_FEATURE(FEATURE_NAME)                                              \
     FEATURE_NAME(custom_border_color, customBorderColors)                                          \
+    FEATURE_NAME(depth_bias_control, depthBiasControl)                                             \
+    FEATURE_NAME(depth_bias_control, leastRepresentableValueForceUnormRepresentation)              \
+    FEATURE_NAME(depth_bias_control, depthBiasExact)                                               \
     FEATURE_NAME(extended_dynamic_state, extendedDynamicState)                                     \
     FEATURE_NAME(format_a4b4g4r4, formatA4B4G4R4)                                                  \
     FEATURE_NAME(index_type_uint8, indexTypeUint8)                                                 \
@@ -464,6 +469,11 @@ public:
         return extensions.depth_clip_control;
     }
 
+    /// Returns true if the device supports VK_EXT_depth_bias_control.
+    bool IsExtDepthBiasControlSupported() const {
+        return extensions.depth_bias_control;
+    }
+
     /// Returns true if the device supports VK_EXT_shader_viewport_index_layer.
     bool IsExtShaderViewportIndexLayerSupported() const {
         return extensions.shader_viewport_index_layer;
@@ -624,6 +634,10 @@ public:
         return features.robustness2.nullDescriptor;
     }
 
+    bool HasExactDepthBiasControl() const {
+        return features.depth_bias_control.depthBiasExact;
+    }
+
     u32 GetMaxVertexInputAttributes() const {
         return properties.properties.limits.maxVertexInputAttributes;
     }
diff --git a/src/video_core/vulkan_common/vulkan_wrapper.cpp b/src/video_core/vulkan_common/vulkan_wrapper.cpp
index 5afba365c..2f3254a97 100644
--- a/src/video_core/vulkan_common/vulkan_wrapper.cpp
+++ b/src/video_core/vulkan_common/vulkan_wrapper.cpp
@@ -113,6 +113,7 @@ void Load(VkDevice device, DeviceDispatch& dld) noexcept {
     X(vkCmdPushDescriptorSetWithTemplateKHR);
     X(vkCmdSetBlendConstants);
     X(vkCmdSetDepthBias);
+    X(vkCmdSetDepthBias2EXT);
     X(vkCmdSetDepthBounds);
     X(vkCmdSetEvent);
     X(vkCmdSetScissor);
diff --git a/src/video_core/vulkan_common/vulkan_wrapper.h b/src/video_core/vulkan_common/vulkan_wrapper.h
index 0d4bbe7f7..1e3c0fa64 100644
--- a/src/video_core/vulkan_common/vulkan_wrapper.h
+++ b/src/video_core/vulkan_common/vulkan_wrapper.h
@@ -226,6 +226,7 @@ struct DeviceDispatch : InstanceDispatch {
     PFN_vkCmdSetBlendConstants vkCmdSetBlendConstants{};
     PFN_vkCmdSetCullModeEXT vkCmdSetCullModeEXT{};
     PFN_vkCmdSetDepthBias vkCmdSetDepthBias{};
+    PFN_vkCmdSetDepthBias2EXT vkCmdSetDepthBias2EXT{};
     PFN_vkCmdSetDepthBounds vkCmdSetDepthBounds{};
     PFN_vkCmdSetDepthBoundsTestEnableEXT vkCmdSetDepthBoundsTestEnableEXT{};
     PFN_vkCmdSetDepthCompareOpEXT vkCmdSetDepthCompareOpEXT{};
@@ -1333,6 +1334,18 @@ public:
         dld->vkCmdSetDepthBias(handle, constant_factor, clamp, slope_factor);
     }
 
+    void SetDepthBias(float constant_factor, float clamp, float slope_factor,
+                      VkDepthBiasRepresentationInfoEXT* extra) const noexcept {
+        VkDepthBiasInfoEXT info{
+            .sType = VK_STRUCTURE_TYPE_DEPTH_BIAS_INFO_EXT,
+            .pNext = extra,
+            .depthBiasConstantFactor = constant_factor,
+            .depthBiasClamp = clamp,
+            .depthBiasSlopeFactor = slope_factor,
+        };
+        dld->vkCmdSetDepthBias2EXT(handle, &info);
+    }
+
     void SetDepthBounds(float min_depth_bounds, float max_depth_bounds) const noexcept {
         dld->vkCmdSetDepthBounds(handle, min_depth_bounds, max_depth_bounds);
     }