| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkPM4f_DEFINED |
| #define SkPM4f_DEFINED |
| |
| #include "SkColorData.h" |
| #include "SkNx.h" |
| |
| static inline Sk4f swizzle_rb(const Sk4f& x) { |
| return SkNx_shuffle<2, 1, 0, 3>(x); |
| } |
| |
| static inline Sk4f swizzle_rb_if_bgra(const Sk4f& x) { |
| #ifdef SK_PMCOLOR_IS_BGRA |
| return swizzle_rb(x); |
| #else |
| return x; |
| #endif |
| } |
| |
| /* |
| * The float values are 0...1 premultiplied in RGBA order (regardless of SkPMColor order) |
| */ |
| struct SK_API SkPM4f { |
| enum { |
| R, G, B, A, |
| }; |
| float fVec[4]; |
| |
| float r() const { return fVec[R]; } |
| float g() const { return fVec[G]; } |
| float b() const { return fVec[B]; } |
| float a() const { return fVec[A]; } |
| |
| static SkPM4f FromPremulRGBA(float r, float g, float b, float a) { |
| SkPM4f p; |
| p.fVec[R] = r; |
| p.fVec[G] = g; |
| p.fVec[B] = b; |
| p.fVec[A] = a; |
| return p; |
| } |
| |
| static SkPM4f From4f(const Sk4f& x) { |
| SkPM4f pm; |
| x.store(pm.fVec); |
| return pm; |
| } |
| static SkPM4f FromF16(const uint16_t[4]); |
| static SkPM4f FromPMColor(SkPMColor); |
| |
| Sk4f to4f() const { return Sk4f::Load(fVec); } |
| Sk4f to4f_rgba() const { return this->to4f(); } |
| Sk4f to4f_bgra() const { return swizzle_rb(this->to4f()); } |
| Sk4f to4f_pmorder() const { return swizzle_rb_if_bgra(this->to4f()); } |
| |
| SkPMColor toPMColor() const { |
| Sk4f value = swizzle_rb_if_bgra(this->to4f()); |
| SkPMColor result; |
| SkNx_cast<uint8_t>(value * Sk4f(255) + Sk4f(0.5f)).store(&result); |
| return result; |
| } |
| |
| void toF16(uint16_t[4]) const; |
| uint64_t toF16() const; // 4 float16 values packed into uint64_t |
| |
| SkColor4f unpremul() const; |
| |
| #ifdef SK_DEBUG |
| void assertIsUnit() const; |
| #else |
| void assertIsUnit() const {} |
| #endif |
| }; |
| |
| #endif |