external/skia/source/skia_opts.cxx

   1 /*
   2  * Use of this source code is governed by a BSD-style license that can be
   3  * found in the LICENSE file.
   4  */
   5
   6 #include <skia_opts.hxx>
   7
   8 #include "include/private/base/SkOnce.h"
   9
  10 #if defined __GNUC__
  11 #pragma GCC diagnostic push
  12 #pragma GCC diagnostic ignored "-Wshadow"
  13 #endif
  14 #include "src/core/SkCpu.h"
  15 #include "src/core/SkOpts.h"
  16 #if defined __GNUC__
  17 #pragma GCC diagnostic pop
  18 #endif
  19
  20 void SkConvertRGBToRGBA(uint32_t* dest, const uint8_t* src, int count)
  21 {
  22     SkOpts::RGB_to_RGB1(dest, src, count);
  23 }
  24
  25 void SkConvertGrayToRGBA(uint32_t* dest, const uint8_t* src, int count)
  26 {
  27     SkOpts::gray_to_RGB1(dest, src, count);
  28 }
  29
  30 void SkConvertRGBAToRGB(uint8_t* dest, const uint32_t* src, int count)
  31 {
  32     SkLoOpts::RGB1_to_RGB(dest, src, count);
  33 }
  34
  35 void SkConvertRGBAToR(uint8_t* dest, const uint32_t* src, int count)
  36 {
  37     SkLoOpts::RGB1_to_R(dest, src, count);
  38 }
  39
  40 // The rest is mostly based on Skia's SkOpts.cpp, reduced to only SSSE3 so far.
  41
  42 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
  43     #define SK_OPTS_NS ssse3
  44 #else
  45     #define SK_OPTS_NS portable
  46 #endif
  47
  48 #include "skia_opts_internal.hxx"
  49
  50 namespace SkLoOpts {
  51     // Define default function pointer values here...
  52     // If our global compile options are set high enough, these defaults might even be
  53     // CPU-specialized, e.g. a typical x86-64 machine might start with SSE2 defaults.
  54     // They'll still get a chance to be replaced with even better ones, e.g. using SSE4.1.
  55 #define DEFINE_DEFAULT(name) decltype(name) name = SK_OPTS_NS::name
  56     DEFINE_DEFAULT(RGB1_to_RGB);
  57     DEFINE_DEFAULT(RGB1_to_R);
  58 #undef DEFINE_DEFAULT
  59
  60     // Each Init_foo() is defined in its own file.
  61     void Init_ssse3();
  62
  63     static void init() {
  64 #if !defined(SK_BUILD_NO_OPTS)
  65     #if defined(SK_CPU_X86)
  66         #if SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSSE3
  67             if (SkCpu::Supports(SkCpu::SSSE3)) { Init_ssse3(); }
  68         #endif
  69     #endif
  70 #endif
  71     }
  72
  73     void Init() {
  74         static SkOnce once;
  75         once(init);
  76     }
  77 }  // namespace SkLoOpts