1 files changed, 51 insertions, 0 deletions

diff --git a/src/video_core/texture_cache/format_lookup_table.h b/src/video_core/texture_cache/format_lookup_table.h
new file mode 100644
index 000000000..8da7481cd
--- /dev/null
+++ b/src/video_core/texture_cache/format_lookup_table.h
@@ -0,0 +1,51 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <numeric>
+#include "video_core/surface.h"
+#include "video_core/textures/texture.h"
+
+namespace VideoCommon {
+
+class FormatLookupTable {
+public:
+    explicit FormatLookupTable();
+
+    VideoCore::Surface::PixelFormat GetPixelFormat(
+        Tegra::Texture::TextureFormat format, bool is_srgb,
+        Tegra::Texture::ComponentType red_component, Tegra::Texture::ComponentType green_component,
+        Tegra::Texture::ComponentType blue_component,
+        Tegra::Texture::ComponentType alpha_component) const noexcept;
+
+private:
+    static_assert(VideoCore::Surface::MaxPixelFormat <= std::numeric_limits<u8>::max());
+
+    static constexpr std::size_t NumTextureFormats = 128;
+
+    static constexpr std::size_t PerComponent = 8;
+    static constexpr std::size_t PerComponents2 = PerComponent * PerComponent;
+    static constexpr std::size_t PerComponents3 = PerComponents2 * PerComponent;
+    static constexpr std::size_t PerComponents4 = PerComponents3 * PerComponent;
+    static constexpr std::size_t PerFormat = PerComponents4 * 2;
+
+    static std::size_t CalculateIndex(Tegra::Texture::TextureFormat format, bool is_srgb,
+                                      Tegra::Texture::ComponentType red_component,
+                                      Tegra::Texture::ComponentType green_component,
+                                      Tegra::Texture::ComponentType blue_component,
+                                      Tegra::Texture::ComponentType alpha_component) noexcept;
+
+    void Set(Tegra::Texture::TextureFormat format, bool is_srgb,
+             Tegra::Texture::ComponentType red_component,
+             Tegra::Texture::ComponentType green_component,
+             Tegra::Texture::ComponentType blue_component,
+             Tegra::Texture::ComponentType alpha_component,
+             VideoCore::Surface::PixelFormat pixel_format);
+
+    std::array<u8, NumTextureFormats * PerFormat> table;
+};
+
+} // namespace VideoCommon