video_core: Rewrite the texture cache

The current texture cache has several points that hurt maintainability
and performance. It's easy to break unrelated parts of the cache
when doing minor changes. The cache can easily forget valuable
information about the cached textures by CPU writes or simply by its
normal usage.The current texture cache has several points that hurt
maintainability and performance. It's easy to break unrelated parts
of the cache when doing minor changes. The cache can easily forget
valuable information about the cached textures by CPU writes or simply
by its normal usage.

This commit aims to address those issues.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/video_core/textures/texture.cpp b/src/video_core/textures/texture.cpp
index 4171e3ef27..ae5621a7d1 100644
--- a/src/video_core/textures/texture.cpp
+++ b/src/video_core/textures/texture.cpp
@@ -5,9 +5,13 @@
 #include <algorithm>
 #include <array>
 
+#include "common/cityhash.h"
 #include "core/settings.h"
 #include "video_core/textures/texture.h"
 
+using Tegra::Texture::TICEntry;
+using Tegra::Texture::TSCEntry;
+
 namespace Tegra::Texture {
 
 namespace {
@@ -65,7 +69,7 @@ unsigned SettingsMinimumAnisotropy() noexcept {
 
 } // Anonymous namespace
 
-std::array<float, 4> TSCEntry::GetBorderColor() const noexcept {
+std::array<float, 4> TSCEntry::BorderColor() const noexcept {
     if (!srgb_conversion) {
         return border_color;
     }
@@ -73,8 +77,16 @@ std::array<float, 4> TSCEntry::GetBorderColor() const noexcept {
             SRGB_CONVERSION_LUT[srgb_border_color_b], border_color[3]};
 }
 
-float TSCEntry::GetMaxAnisotropy() const noexcept {
+float TSCEntry::MaxAnisotropy() const noexcept {
     return static_cast<float>(std::max(1U << max_anisotropy, SettingsMinimumAnisotropy()));
 }
 
 } // namespace Tegra::Texture
+
+size_t std::hash<TICEntry>::operator()(const TICEntry& tic) const noexcept {
+    return Common::CityHash64(reinterpret_cast<const char*>(&tic), sizeof tic);
+}
+
+size_t std::hash<TSCEntry>::operator()(const TSCEntry& tsc) const noexcept {
+    return Common::CityHash64(reinterpret_cast<const char*>(&tsc), sizeof tsc);
+}