rasterizer_cache: Shorten filenames and general cleanup

* AllocateSurfaceTexture now takes the PixelFormat directly as FormatTuple is an OpenGL struct and will be moved there

src/video_core/rasterizer_cache/utils.h

@@ -0,0 +1,68 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include <functional>
+#include "common/hash.h"
+#include "video_core/rasterizer_cache/pixel_format.h"
+#include "video_core/rasterizer_cache/types.h"
+
+namespace OpenGL {
+
+struct FormatTuple {
+    int internal_format;
+    u32 format;
+    u32 type;
+};
+
+const FormatTuple& GetFormatTuple(PixelFormat pixel_format);
+
+struct HostTextureTag {
+    PixelFormat format{};
+    u32 width = 0;
+    u32 height = 0;
+
+    auto operator<=>(const HostTextureTag&) const noexcept = default;
+
+    const u64 Hash() const {
+        return Common::ComputeHash64(this, sizeof(HostTextureTag));
+    }
+};
+
+struct TextureCubeConfig {
+    PAddr px;
+    PAddr nx;
+    PAddr py;
+    PAddr ny;
+    PAddr pz;
+    PAddr nz;
+    u32 width;
+    Pica::TexturingRegs::TextureFormat format;
+
+    auto operator<=>(const TextureCubeConfig&) const noexcept = default;
+
+    const u64 Hash() const {
+        return Common::ComputeHash64(this, sizeof(TextureCubeConfig));
+    }
+};
+
+[[nodiscard]] ClearValue MakeClearValue(Aspect aspect, PixelFormat format, const u8* fill_data);
+
+} // namespace OpenGL
+
+namespace std {
+template <>
+struct hash<OpenGL::HostTextureTag> {
+    std::size_t operator()(const OpenGL::HostTextureTag& tag) const noexcept {
+        return tag.Hash();
+    }
+};
+
+template <>
+struct hash<OpenGL::TextureCubeConfig> {
+    std::size_t operator()(const OpenGL::TextureCubeConfig& config) const noexcept {
+        return config.Hash();
+    }
+};
+} // namespace std