From 1c9e17496b6f9f4b083c62aa25548617dd179a8b Mon Sep 17 00:00:00 2001
From: Zephyron <zephyron@citron-emu.orgq>
Date: Sun, 16 Feb 2025 18:30:50 +1000
Subject: [PATCH] texture_cache: Add equality operators for ImageInfo and
 ImageViewInfo

- Add operator== to ImageInfo and ImageViewInfo classes to enable direct equality comparisons. The implementations use std::tie to perform member-wise comparisons of all relevant fields in a safe and efficient manner.

This allows for easier comparison of texture cache entries and view
information, which can be useful for cache management and debugging.
---
 src/video_core/texture_cache/image_info.cpp      | 12 ++++++++++++
 src/video_core/texture_cache/image_info.h        |  3 +++
 src/video_core/texture_cache/image_view_info.cpp |  8 ++++++++
 src/video_core/texture_cache/image_view_info.h   |  3 +++
 4 files changed, 26 insertions(+)

diff --git a/src/video_core/texture_cache/image_info.cpp b/src/video_core/texture_cache/image_info.cpp
index 135dd64de..08df876b1 100644
--- a/src/video_core/texture_cache/image_info.cpp
+++ b/src/video_core/texture_cache/image_info.cpp
@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <fmt/ranges.h>
@@ -284,4 +285,15 @@ ImageInfo::ImageInfo(const Tegra::DMA::ImageOperand& config) noexcept {
     downscaleable = size.height > DownscaleHeightThreshold;
 }
 
+bool ImageInfo::operator==(const ImageInfo& rhs) const noexcept {
+    return std::tie(this->format, this->num_samples, this->resources, this->type,
+                    this->pitch, this->block, this->size, this->tile_width_spacing,
+                    this->is_sparse, this->rescaleable, this->downscaleable,
+                    this->forced_flushed, this->dma_downloaded) ==
+           std::tie(rhs.format, rhs.num_samples, rhs.resources, rhs.type,
+                    rhs.pitch, rhs.block, rhs.size, rhs.tile_width_spacing,
+                    rhs.is_sparse, rhs.rescaleable, rhs.downscaleable,
+                    rhs.forced_flushed, rhs.dma_downloaded);
+}
+
 } // namespace VideoCommon
diff --git a/src/video_core/texture_cache/image_info.h b/src/video_core/texture_cache/image_info.h
index eb490a642..63bc9bf78 100644
--- a/src/video_core/texture_cache/image_info.h
+++ b/src/video_core/texture_cache/image_info.h
@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
@@ -42,6 +43,8 @@ struct ImageInfo {
     bool forced_flushed = false;
     bool dma_downloaded = false;
     bool is_sparse = false;
+
+    bool operator==(const ImageInfo& rhs) const noexcept;
 };
 
 } // namespace VideoCommon
diff --git a/src/video_core/texture_cache/image_view_info.cpp b/src/video_core/texture_cache/image_view_info.cpp
index f47885147..5930204db 100644
--- a/src/video_core/texture_cache/image_view_info.cpp
+++ b/src/video_core/texture_cache/image_view_info.cpp
@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <limits>
@@ -87,4 +88,11 @@ bool ImageViewInfo::IsRenderTarget() const noexcept {
            z_source == RENDER_TARGET_SWIZZLE && w_source == RENDER_TARGET_SWIZZLE;
 }
 
+bool ImageViewInfo::operator==(const ImageViewInfo& rhs) const noexcept {
+    return std::tie(this->type, this->format, this->range,
+                    this->x_source, this->y_source, this->z_source, this->w_source) ==
+           std::tie(rhs.type, rhs.format, rhs.range,
+                    rhs.x_source, rhs.y_source, rhs.z_source, rhs.w_source);
+}
+
 } // namespace VideoCommon
diff --git a/src/video_core/texture_cache/image_view_info.h b/src/video_core/texture_cache/image_view_info.h
index 921f88988..a28248795 100644
--- a/src/video_core/texture_cache/image_view_info.h
+++ b/src/video_core/texture_cache/image_view_info.h
@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
@@ -43,6 +44,8 @@ struct ImageViewInfo {
     u8 y_source = static_cast<u8>(SwizzleSource::G);
     u8 z_source = static_cast<u8>(SwizzleSource::B);
     u8 w_source = static_cast<u8>(SwizzleSource::A);
+
+    bool operator==(const ImageViewInfo& rhs) const noexcept;
 };
 static_assert(std::has_unique_object_representations_v<ImageViewInfo>);