Remove use of SkMathPriv.h
Change-Id: If7fed983a6447574ac5ff5067139960b1b35e154
Bug: skbug.com/13983
diff --git a/libs/hwui/renderthread/CacheManager.cpp b/libs/hwui/renderthread/CacheManager.cpp
index 1c76884..23611ef 100644
--- a/libs/hwui/renderthread/CacheManager.cpp
+++ b/libs/hwui/renderthread/CacheManager.cpp
@@ -19,7 +19,6 @@
#include <GrContextOptions.h>
#include <SkExecutor.h>
#include <SkGraphics.h>
-#include <SkMathPriv.h>
#include <math.h>
#include <utils/Trace.h>
@@ -47,13 +46,23 @@
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());
