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Commit 7cc3ee70 authored by Seigo Nonaka's avatar Seigo Nonaka
Browse files

Adjust font texture cache based on device density. 

The main purpose of this CL is reducing font cache size of
low-density device.

The memory usage for the small RGBA texture will be
Nexus 6P: 7,928,856 bytes (1408x1408)
Nexus 5X: 4,734,976 bytes (1088x1088)
These used to be 4,194,304 bytes

Test: manually checked
Bug: 64400885
Change-Id: Ied064a6d59909ad7fbeff74332973206436fbd34
parent a2991d04

libs/hwui/FontRenderer.cpp

+13 −4
Original line number Diff line number Diff line
@@ -99,13 +99,22 @@ FontRenderer::FontRenderer(const uint8_t* gammaTable) 
    }



    auto deviceInfo = DeviceInfo::get();

    auto displayInfo = deviceInfo->displayInfo();

    int maxTextureSize = deviceInfo->maxTextureSize();



    // Adjust cache size based on Pixel's desnsity.

    constexpr float PIXEL_DENSITY = 2.6;

    const float densityRatio = displayInfo.density / PIXEL_DENSITY;



    // TODO: Most devices are hardcoded with this configuration, does it need to be dynamic?

    mSmallCacheWidth = std::min(1024, maxTextureSize);

    mSmallCacheHeight = std::min(1024, maxTextureSize);

    mLargeCacheWidth = std::min(2048, maxTextureSize);

    mLargeCacheHeight = std::min(1024, maxTextureSize);

    mSmallCacheWidth =

            OffscreenBuffer::computeIdealDimension(std::min(1024, maxTextureSize) * densityRatio);

    mSmallCacheHeight =

            OffscreenBuffer::computeIdealDimension(std::min(1024, maxTextureSize) * densityRatio);

    mLargeCacheWidth =

            OffscreenBuffer::computeIdealDimension(std::min(2048, maxTextureSize) * densityRatio);

    mLargeCacheHeight =

            OffscreenBuffer::computeIdealDimension(std::min(1024, maxTextureSize) * densityRatio);



    if (sLogFontRendererCreate) {

        INIT_LOGD("  Text cache sizes, in pixels: %i x %i, %i x %i, %i x %i, %i x %i",