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astc: Move Popcnt to an anonymous namespace and make it constexpr

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This commit is contained in:
ReinUsesLisp 2020-03-13 22:26:48 -03:00
parent 731a9a322e
commit 835a3d09c6
1 changed files with 13 additions and 9 deletions
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22
src/video_core/textures/astc.cpp
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@ -25,6 +25,19 @@
#include "video_core/textures/astc.h" #include "video_core/textures/astc.h"
namespace {
/// Count the number of bits set in a number.
constexpr u32 Popcnt(u32 n) {
u32 c = 0;
for (; n; c++) {
n &= n - 1;
}
return c;
}
} // Anonymous namespace
class InputBitStream { class InputBitStream {
public: public:
explicit InputBitStream(const unsigned char* ptr, int start_offset = 0) explicit InputBitStream(const unsigned char* ptr, int start_offset = 0)
@ -212,15 +225,6 @@ public:
return totalBits; return totalBits;
} }
// Count the number of bits set in a number.
static inline u32 Popcnt(u32 n) {
u32 c;
for (c = 0; n; c++) {
n &= n - 1;
}
return c;
}
// Returns a new instance of this struct that corresponds to the // Returns a new instance of this struct that corresponds to the
// can take no more than maxval values // can take no more than maxval values
static IntegerEncodedValue CreateEncoding(u32 maxVal) { static IntegerEncodedValue CreateEncoding(u32 maxVal) {