From 5bb45dc7ba9285a735754a683520e7af60166c87 Mon Sep 17 00:00:00 2001
From: squidbus <175574877+squidbus@users.noreply.github.com>
Date: Sat, 5 Oct 2024 15:05:24 -0700
Subject: [PATCH] vulkan: Respect maximum sampler LOD bias. (#1254)

---
 src/video_core/renderer_vulkan/vk_instance.h | 5 +++++
 src/video_core/texture_cache/sampler.cpp     | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/video_core/renderer_vulkan/vk_instance.h b/src/video_core/renderer_vulkan/vk_instance.h
index e019ffba39c..2d03b156500 100644
--- a/src/video_core/renderer_vulkan/vk_instance.h
+++ b/src/video_core/renderer_vulkan/vk_instance.h
@@ -222,6 +222,11 @@ class Instance {
         return properties.limits.maxTexelBufferElements;
     }
 
+    /// Returns the maximum sampler LOD bias.
+    float MaxSamplerLodBias() const {
+        return properties.limits.maxSamplerLodBias;
+    }
+
     /// Returns the maximum number of push descriptors.
     u32 MaxPushDescriptors() const {
         return push_descriptor_props.maxPushDescriptors;
diff --git a/src/video_core/texture_cache/sampler.cpp b/src/video_core/texture_cache/sampler.cpp
index ed567b9ee69..179dd664691 100644
--- a/src/video_core/texture_cache/sampler.cpp
+++ b/src/video_core/texture_cache/sampler.cpp
@@ -16,7 +16,7 @@ Sampler::Sampler(const Vulkan::Instance& instance, const AmdGpu::Sampler& sample
         .addressModeU = LiverpoolToVK::ClampMode(sampler.clamp_x),
         .addressModeV = LiverpoolToVK::ClampMode(sampler.clamp_y),
         .addressModeW = LiverpoolToVK::ClampMode(sampler.clamp_z),
-        .mipLodBias = sampler.LodBias(),
+        .mipLodBias = std::min(sampler.LodBias(), instance.MaxSamplerLodBias()),
         .compareEnable = sampler.depth_compare_func != AmdGpu::DepthCompare::Never,
         .compareOp = LiverpoolToVK::DepthCompare(sampler.depth_compare_func),
         .minLod = sampler.MinLod(),