From ab1d99d2187b05fc43f86b0d0f24838da714f86e Mon Sep 17 00:00:00 2001
From: CamilleLaVey <camillelavey99@gmail.com>
Date: Fri, 31 Jul 2026 17:31:43 -0400
Subject: [PATCH] some debugs tools

---
 .../renderer_vulkan/vk_rasterizer.cpp           | 13 +++++++++++++
 src/video_core/texture_cache/texture_cache.h    | 17 +++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index ac1e7a9677..3c9526dde6 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -6,6 +6,7 @@
 
 #include <algorithm>
 #include <array>
+#include <atomic>
 #include <limits>
 #include <memory>
 #include <mutex>
@@ -103,8 +104,20 @@ VkViewport GetViewportState(const Device& device, const Maxwell& regs, size_t in
         .maxDepth = src.translate_z + src.scale_z,
     };
     if (!device.IsExtDepthRangeUnrestrictedSupported()) {
+        const float unclamped_min = viewport.minDepth;
+        const float unclamped_max = viewport.maxDepth;
         viewport.minDepth = std::clamp(viewport.minDepth, 0.0f, 1.0f);
         viewport.maxDepth = std::clamp(viewport.maxDepth, 0.0f, 1.0f);
+        if (viewport.minDepth != unclamped_min || viewport.maxDepth != unclamped_max) {
+            static std::atomic<u32> reported{0};
+            if (reported.fetch_add(1, std::memory_order_relaxed) < 32) {
+                LOG_WARNING(Render_Vulkan,
+                            "Depth range clamped: viewport={} mode={} translate_z={} scale_z={} "
+                            "range=[{}, {}] -> [{}, {}]",
+                            index, static_cast<u32>(regs.depth_mode), src.translate_z, src.scale_z,
+                            unclamped_min, unclamped_max, viewport.minDepth, viewport.maxDepth);
+            }
+        }
     }
     return viewport;
 }
diff --git a/src/video_core/texture_cache/texture_cache.h b/src/video_core/texture_cache/texture_cache.h
index f00d645055..d02abc8944 100644
--- a/src/video_core/texture_cache/texture_cache.h
+++ b/src/video_core/texture_cache/texture_cache.h
@@ -1791,6 +1791,8 @@ ImageId TextureCache<P>::JoinImages(const ImageInfo& info, GPUVAddr gpu_addr, DA
         ImageBase& aliased = slot_images[aliased_id];
         aliased.overlapping_images.push_back(new_image_id);
         new_image.overlapping_images.push_back(aliased_id);
+        const bool aliased_was_bad = True(aliased.flags & ImageFlagBits::BadOverlap);
+        const bool new_was_bad = True(new_image.flags & ImageFlagBits::BadOverlap);
         if (aliased.info.resources.levels == 1 && aliased.info.block.depth == 0 &&
             aliased.overlapping_images.size() > 1) {
             aliased.flags |= ImageFlagBits::BadOverlap;
@@ -1799,6 +1801,21 @@ ImageId TextureCache<P>::JoinImages(const ImageInfo& info, GPUVAddr gpu_addr, DA
             new_image.overlapping_images.size() > 1) {
             new_image.flags |= ImageFlagBits::BadOverlap;
         }
+        const bool aliased_is_bad = True(aliased.flags & ImageFlagBits::BadOverlap);
+        const bool new_is_bad = True(new_image.flags & ImageFlagBits::BadOverlap);
+        if ((!aliased_was_bad && aliased_is_bad) || (!new_was_bad && new_is_bad)) {
+            LOG_WARNING(HW_GPU,
+                        "Bad overlap: existing gpu_addr={:#x} {}x{}x{} fmt={} type={} rt={} | "
+                        "incoming gpu_addr={:#x} {}x{}x{} fmt={} type={} rt={}",
+                        aliased.gpu_addr, aliased.info.size.width, aliased.info.size.height,
+                        aliased.info.size.depth, static_cast<u32>(aliased.info.format),
+                        static_cast<u32>(aliased.info.type),
+                        True(aliased.flags & ImageFlagBits::GpuModified),
+                        new_image.gpu_addr, new_image.info.size.width, new_image.info.size.height,
+                        new_image.info.size.depth, static_cast<u32>(new_image.info.format),
+                        static_cast<u32>(new_image.info.type),
+                        True(new_image.flags & ImageFlagBits::GpuModified));
+        }
     }
 
     for (const auto& copy_object : join_copies_to_do) {