C++ (Cpp) WorseCaseSize示例

示例#1

文件： GrGLRenderTarget.cpp 项目： W3SS/skia

void GrGLRenderTarget::init(const GrSurfaceDesc& desc, const IDDesc& idDesc) {
    fRTFBOID                = idDesc.fRTFBOID;
    fTexFBOID               = idDesc.fTexFBOID;
    fMSColorRenderbufferID  = idDesc.fMSColorRenderbufferID;
    fRTLifecycle            = idDesc.fLifeCycle;

    fViewport.fLeft   = 0;
    fViewport.fBottom = 0;
    fViewport.fWidth  = desc.fWidth;
    fViewport.fHeight = desc.fHeight;

    fGpuMemorySize = this->totalSamples() * this->totalBytesPerSample();

    SkASSERT(fGpuMemorySize <= WorseCaseSize(desc));
}

示例#2

文件： GrTexture.cpp 项目： kekekeks/skia

size_t GrTexture::onGpuMemorySize() const {
    size_t textureSize;

    if (GrPixelConfigIsCompressed(fDesc.fConfig)) {
        textureSize = GrCompressedFormatDataSize(fDesc.fConfig, fDesc.fWidth, fDesc.fHeight);
    } else {
        textureSize = (size_t) fDesc.fWidth * fDesc.fHeight * GrBytesPerPixel(fDesc.fConfig);
    }

    if (this->texturePriv().hasMipMaps()) {
        // We don't have to worry about the mipmaps being a different size than
        // we'd expect because we never change fDesc.fWidth/fHeight.
        textureSize += textureSize/3;
    }

    SkASSERT(!SkToBool(fDesc.fFlags & kRenderTarget_GrSurfaceFlag));
    SkASSERT(textureSize <= WorseCaseSize(fDesc));

    return textureSize;
}