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Diffstat (limited to 'src/core/SkPx.h')
-rw-r--r-- | src/core/SkPx.h | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/src/core/SkPx.h b/src/core/SkPx.h deleted file mode 100644 index 62ec598cd6..0000000000 --- a/src/core/SkPx.h +++ /dev/null @@ -1,89 +0,0 @@ -/* - * Copyright 2015 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef SkPx_DEFINED -#define SkPx_DEFINED - -#include "SkTypes.h" -#include "SkColorPriv.h" - -// We'll include one of src/opts/SkPx_{sse,neon,none}.h to define a type SkPx. -// -// SkPx represents up to SkPx::N 8888 pixels. It's agnostic to whether these -// are SkColors or SkPMColors; it only assumes that alpha is the high byte. -static_assert(SK_A32_SHIFT == 24, "For both SkColor and SkPMColor, alpha is always the high byte."); -// -// SkPx::Alpha represents up to SkPx::N 8-bit values, usually coverage or alpha. -// SkPx::Wide represents up to SkPx::N pixels with 16 bits per component. -// -// SkPx supports the following methods: -// static SkPx Dup(uint32_t); -// static SkPx Load(const uint32_t*); -// static SkPx Load(const uint32_t*, int n); // where 0<n<SkPx::N -// void store(uint32_t*) const; -// void store(uint32_t*, int n) const; // where 0<n<SkPx::N -// -// Alpha alpha() const; // argb -> a -// Wide widenLo() const; // argb -> 0a0r0g0b -// Wide widenHi() const; // argb -> a0r0g0b0 -// Wide widenLoHi() const; // argb -> aarrggbb -// -// SkPx operator+(const SkPx&) const; -// SkPx operator-(const SkPx&) const; -// SkPx saturatedAdd(const SkPx&) const; -// -// Wide operator*(const Alpha&) const; // argb * A -> (a*A)(r*A)(g*A)(b*A) -// -// // Fast approximate (px*a+127)/255. -// // Never off by more than 1, and always correct when px or a is 0 or 255. -// // We use the approximation (px*a+px)/256. -// SkPx approxMulDiv255(const Alpha&) const; -// -// SkPx addAlpha(const Alpha&) const; // argb + A -> (a+A)rgb -// -// SkPx::Alpha supports the following methods: -// static Alpha Dup(uint8_t); -// static Alpha Load(const uint8_t*); -// static Alpha Load(const uint8_t*, int n); // where 0<n<SkPx::N -// -// Alpha inv() const; // a -> 255-a -// -// SkPx::Wide supports the following methods: -// Wide operator+(const Wide&); -// Wide operator-(const Wide&); -// Wide shl<int bits>(); -// Wide shr<int bits>(); -// -// // Return the high byte of each component of (*this + o.widenLo()). -// SkPx addNarrowHi(const SkPx& o); -// -// Methods left unwritten, but certainly to come: -// SkPx SkPx::operator<(const SkPx&) const; -// SkPx SkPx::thenElse(const SkPx& then, const SkPx& else) const; -// Wide Wide::operator<(const Wide&) const; -// Wide Wide::thenElse(const Wide& then, const Wide& else) const; -// -// SkPx Wide::div255() const; // Rounds, think (*this + 127) / 255. -// -// The different implementations of SkPx have complete freedom to choose -// SkPx::N and how they represent SkPx, SkPx::Alpha, and SkPx::Wide. -// -// All observable math must remain identical. - -#if defined(SKNX_NO_SIMD) - #include "../opts/SkPx_none.h" -#else - #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 - #include "../opts/SkPx_sse.h" - #elif defined(SK_ARM_HAS_NEON) - #include "../opts/SkPx_neon.h" - #else - #include "../opts/SkPx_none.h" - #endif -#endif - -#endif//SkPx_DEFINED |