From 345e73f2feb0701e3c3099d002a1c21fb524eae4 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Fri, 10 May 2019 04:17:48 -0300 Subject: video_core: Use un-shifted block sizes to avoid integer divisions Instead of storing all block width, height and depths in their shifted form: block_width = 1U << block_shift; Store them like they are provided by the emulated hardware (their block_shift form). This way we can avoid doing the costly Common::AlignUp operation to align texture sizes and drop CPU integer divisions with bitwise logic (defined in Common::AlignBits). --- src/common/alignment.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/common') diff --git a/src/common/alignment.h b/src/common/alignment.h index d94a2291f..3379a6967 100644 --- a/src/common/alignment.h +++ b/src/common/alignment.h @@ -19,6 +19,11 @@ constexpr T AlignDown(T value, std::size_t size) { return static_cast(value - value % size); } +template +constexpr T AlignBits(T value, T align) { + return (value + ((1 << align) - 1)) >> align << align; +} + template constexpr bool Is4KBAligned(T value) { static_assert(std::is_unsigned_v, "T must be an unsigned value."); -- cgit v1.2.3