SkBlurEngine.cpp File Reference

#include "src/core/SkBlurEngine.h"
#include "include/core/SkAlphaType.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkClipOp.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkM44.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkSamplingOptions.h"
#include "include/core/SkScalar.h"
#include "include/core/SkTileMode.h"
#include "include/effects/SkRuntimeEffect.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkMath.h"
#include "include/private/base/SkTo.h"
#include "src/core/SkDevice.h"
#include "src/core/SkKnownRuntimeEffects.h"
#include "src/core/SkSpecialImage.h"
#include <algorithm>
#include <array>
#include <cmath>
#include <cstdint>
#include <cstring>
#include <utility>

Go to the source code of this file.

Functions
static SkKnownRuntimeEffects::StableKey	to_stablekey (int kernelWidth, uint32_t baseKey)

Function Documentation

to_stablekey()

static SkKnownRuntimeEffects::StableKey to_stablekey ( int  kernelWidth, uint32_t  baseKey  )

static

Definition at line 204 of file SkBlurEngine.cpp.

                                                                                      {
    SkASSERT(kernelWidth >= 2 && kernelWidth <= SkShaderBlurAlgorithm::kMaxSamples);
    switch(kernelWidth) {
        // Batch on multiples of 4 (skipping width=1, since that can't happen)
        case 2:  [[fallthrough]];
        case 3:  [[fallthrough]];
        case 4:  return static_cast<SkKnownRuntimeEffects::StableKey>(baseKey);
        case 5:  [[fallthrough]];
        case 6:  [[fallthrough]];
        case 7:  [[fallthrough]];
        case 8:  return static_cast<SkKnownRuntimeEffects::StableKey>(baseKey+1);
        case 9:  [[fallthrough]];
        case 10: [[fallthrough]];
        case 11: [[fallthrough]];
        case 12: return static_cast<SkKnownRuntimeEffects::StableKey>(baseKey+2);
        case 13: [[fallthrough]];
        case 14: [[fallthrough]];
        case 15: [[fallthrough]];
        case 16: return static_cast<SkKnownRuntimeEffects::StableKey>(baseKey+3);
        case 17: [[fallthrough]];
        case 18: [[fallthrough]];
        case 19: [[fallthrough]];
        // With larger kernels, batch on multiples of eight so up to 7 wasted samples.
        case 20: return static_cast<SkKnownRuntimeEffects::StableKey>(baseKey+4);
        case 21: [[fallthrough]];
        case 22: [[fallthrough]];
        case 23: [[fallthrough]];
        case 24: [[fallthrough]];
        case 25: [[fallthrough]];
        case 26: [[fallthrough]];
        case 27: [[fallthrough]];
        case 28: return static_cast<SkKnownRuntimeEffects::StableKey>(baseKey+5);
        default:
            SkUNREACHABLE;
    }
}