101 lines
3.0 KiB
C++
Executable File
101 lines
3.0 KiB
C++
Executable File
/*
|
|
* Copyright (C) 2016 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef TNT_MATH_NORM_H
|
|
#define TNT_MATH_NORM_H
|
|
|
|
#include <math/scalar.h>
|
|
#include <math/vec4.h>
|
|
|
|
#include <cmath>
|
|
#include <stdint.h>
|
|
|
|
namespace filament {
|
|
namespace math {
|
|
|
|
inline uint16_t packUnorm16(float v) noexcept {
|
|
return static_cast<uint16_t>(std::round(clamp(v, 0.0f, 1.0f) * 65535.0f));
|
|
}
|
|
|
|
inline ushort4 packUnorm16(float4 v) noexcept {
|
|
return ushort4{ packUnorm16(v.x), packUnorm16(v.y), packUnorm16(v.z), packUnorm16(v.w) };
|
|
}
|
|
|
|
inline int16_t packSnorm16(float v) noexcept {
|
|
return static_cast<int16_t>(std::round(clamp(v, -1.0f, 1.0f) * 32767.0f));
|
|
}
|
|
|
|
inline short2 packSnorm16(float2 v) noexcept {
|
|
return short2{ packSnorm16(v.x), packSnorm16(v.y) };
|
|
}
|
|
|
|
inline short4 packSnorm16(float4 v) noexcept {
|
|
return short4{ packSnorm16(v.x), packSnorm16(v.y), packSnorm16(v.z), packSnorm16(v.w) };
|
|
}
|
|
|
|
inline float unpackUnorm16(uint16_t v) noexcept {
|
|
return v / 65535.0f;
|
|
}
|
|
|
|
inline float4 unpackUnorm16(ushort4 v) noexcept {
|
|
return float4{ unpackUnorm16(v.x), unpackUnorm16(v.y), unpackUnorm16(v.z), unpackUnorm16(v.w) };
|
|
}
|
|
|
|
inline float unpackSnorm16(int16_t v) noexcept {
|
|
return clamp(v / 32767.0f, -1.0f, 1.0f);
|
|
}
|
|
|
|
inline float4 unpackSnorm16(short4 v) noexcept {
|
|
return float4{ unpackSnorm16(v.x), unpackSnorm16(v.y), unpackSnorm16(v.z), unpackSnorm16(v.w) };
|
|
}
|
|
|
|
inline uint8_t packUnorm8(float v) noexcept {
|
|
return static_cast<uint8_t>(std::round(clamp(v, 0.0f, 1.0f) * 255.0));
|
|
}
|
|
|
|
inline ubyte4 packUnorm8(float4 v) noexcept {
|
|
return ubyte4{ packUnorm8(v.x), packUnorm8(v.y), packUnorm8(v.z), packUnorm8(v.w) };
|
|
}
|
|
|
|
inline int8_t packSnorm8(float v) noexcept {
|
|
return static_cast<int8_t>(std::round(clamp(v, -1.0f, 1.0f) * 127.0));
|
|
}
|
|
|
|
inline byte4 packSnorm8(float4 v) noexcept {
|
|
return byte4{ packSnorm8(v.x), packSnorm8(v.y), packSnorm8(v.z), packSnorm8(v.w) };
|
|
}
|
|
|
|
inline float unpackUnorm8(uint8_t v) noexcept {
|
|
return v / 255.0f;
|
|
}
|
|
|
|
inline float4 unpackUnorm8(ubyte4 v) noexcept {
|
|
return float4{ unpackUnorm8(v.x), unpackUnorm8(v.y), unpackUnorm8(v.z), unpackUnorm8(v.w) };
|
|
}
|
|
|
|
inline float unpackSnorm8(int8_t v) noexcept {
|
|
return clamp(v / 127.0f, -1.0f, 1.0f);
|
|
}
|
|
|
|
inline float4 unpackSnorm8(byte4 v) noexcept {
|
|
return float4{ unpackSnorm8(v.x), unpackSnorm8(v.y), unpackSnorm8(v.z), unpackSnorm8(v.w) };
|
|
}
|
|
|
|
} // namespace math
|
|
} // namespace filament
|
|
|
|
#endif // TNT_MATH_NORM_H
|