Merge "Remove use of SkMathPriv.h"

#include <GrContextOptions.h>

#include <SkExecutor.h>

#include <SkGraphics.h>

#include <SkMathPriv.h>

#include <math.h>

#include <utils/Trace.h>

    setupCacheLimits();

}

static inline int countLeadingZeros(uint32_t mask) {

    // __builtin_clz(0) is undefined, so we have to detect that case.

    return mask ? __builtin_clz(mask) : 32;

}

// Return the smallest power-of-2 >= n.

static inline uint32_t nextPowerOfTwo(uint32_t n) {

    return n ? (1 << (32 - countLeadingZeros(n - 1))) : 1;

}

void CacheManager::setupCacheLimits() {

    mMaxResourceBytes = mMaxSurfaceArea * mMemoryPolicy.surfaceSizeMultiplier;

    mBackgroundResourceBytes = mMaxResourceBytes * mMemoryPolicy.backgroundRetentionPercent;

    // This sets the maximum size for a single texture atlas in the GPU font cache. If

    // necessary, the cache can allocate additional textures that are counted against the

    // total cache limits provided to Skia.

    mMaxGpuFontAtlasBytes = GrNextSizePow2(mMaxSurfaceArea);

    mMaxGpuFontAtlasBytes = nextPowerOfTwo(mMaxSurfaceArea);

    // This sets the maximum size of the CPU font cache to be at least the same size as the

    // total number of GPU font caches (i.e. 4 separate GPU atlases).

    mMaxCpuFontCacheBytes = std::max(mMaxGpuFontAtlasBytes * 4, SkGraphics::GetFontCacheLimit());