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| 1 /* | |
| 2 * Copyright 2016 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkCpu_DEFINED | |
| 9 #define SkCpu_DEFINED | |
| 10 | |
| 11 #include "SkTypes.h" | |
| 12 | |
| 13 struct SkCpu { | |
| 14 enum { | |
| 15 SSE1 = 1 << 0, | |
| 16 SSE2 = 1 << 1, | |
| 17 SSE3 = 1 << 2, | |
| 18 SSSE3 = 1 << 3, | |
| 19 SSE41 = 1 << 4, | |
| 20 SSE42 = 1 << 5, | |
| 21 AVX = 1 << 6, | |
| 22 F16C = 1 << 7, | |
| 23 FMA = 1 << 8, | |
| 24 AVX2 = 1 << 9, | |
| 25 }; | |
| 26 enum { | |
| 27 NEON = 1 << 0, | |
| 28 NEON_FMA = 1 << 1, | |
| 29 VFP_FP16 = 1 << 2, | |
| 30 }; | |
| 31 | |
| 32 static void CacheRuntimeFeatures(); | |
| 33 static bool Supports(uint32_t); | |
| 34 private: | |
| 35 #if defined(_MSC_VER) || !defined(SkCpu_IMPL) | |
| 36 static const uint32_t gCachedFeatures; | |
| 37 #else | |
| 38 static uint32_t gCachedFeatures; | |
| 39 #endif | |
| 40 }; | |
| 41 | |
| 42 inline bool SkCpu::Supports(uint32_t mask) { | |
| 43 uint32_t features = gCachedFeatures; | |
| 44 | |
| 45 // If we mask in compile-time known lower limits, the compiler can | |
| 46 // often compile away this entire function. | |
| 47 #if SK_CPU_X86 | |
| 48 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE1 | |
| 49 features |= SSE1; | |
| 50 #endif | |
| 51 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 | |
| 52 features |= SSE2; | |
| 53 #endif | |
| 54 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE3 | |
| 55 features |= SSE3; | |
| 56 #endif | |
| 57 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3 | |
| 58 features |= SSSE3; | |
| 59 #endif | |
| 60 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41 | |
| 61 features |= SSE41; | |
| 62 #endif | |
| 63 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE42 | |
| 64 features |= SSE42; | |
| 65 #endif | |
| 66 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_AVX | |
| 67 features |= AVX; | |
| 68 #endif | |
| 69 // F16C goes here if we add SK_CPU_SSE_LEVEL_F16C | |
| 70 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_AVX2 | |
| 71 features |= AVX2; | |
| 72 #endif | |
| 73 // FMA doesn't fit neatly into this total ordering. | |
| 74 // It's available on Haswell+ just like AVX2, but it's technically a differe
nt bit. | |
| 75 // TODO: circle back on this if we find ourselves limited by lack of compile
-time FMA | |
| 76 | |
| 77 #else | |
| 78 #if defined(SK_ARM_HAS_NEON) | |
| 79 features |= NEON; | |
| 80 #endif | |
| 81 | |
| 82 #if defined(SK_CPU_ARM64) | |
| 83 features |= NEON|NEON_FMA|VFP_FP16; | |
| 84 #endif | |
| 85 | |
| 86 #endif | |
| 87 return (features & mask) == mask; | |
| 88 } | |
| 89 | |
| 90 #endif//SkCpu_DEFINED | |
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Chromium Code Reviews
Issue 2133413002:
try to speed-up maprect + round2i + contains (Closed)
Base URL: https://skia.googlesource.com/skia.git@master