forked from dolphin-emu/dolphin
29 lines
968 B
C++
29 lines
968 B
C++
// Copyright 2016 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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namespace SamplerCommon
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{
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// Helper for checking if a BPMemory TexMode0 register is set to Point
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// Filtering modes. This is used to decide whether Anisotropic enhancements
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// are (mostly) safe in the VideoBackends.
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// If both the minification and magnification filters are set to POINT modes
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// then applying anisotropic filtering is equivalent to forced filtering. Point
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// mode textures are usually some sort of 2D UI billboard which will end up
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// misaligned from the correct pixels when filtered anisotropically.
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template <class T>
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constexpr bool IsBpTexMode0PointFiltering(const T& tm0)
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{
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return tm0.min_filter < 4 && !tm0.mag_filter;
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}
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// Check if the minification filter has mipmap based filtering modes enabled.
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template <class T>
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constexpr bool AreBpTexMode0MipmapsEnabled(const T& tm0)
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{
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return (tm0.min_filter & 3) != 0;
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}
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}
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