inline void FELighting::platformApplyGeneric(LightingData& data, LightSource::PaintingData& paintingData)
{
int optimalThreadNumber = ((data.widthDecreasedByOne - 1) * (data.heightDecreasedByOne - 1)) / s_minimalRectDimension;
if (optimalThreadNumber > 1) {
// Initialize parallel jobs
ParallelJobs<PlatformApplyGenericParameters> parallelJobs(&platformApplyGenericWorker, optimalThreadNumber);
// Fill the parameter array
int job = parallelJobs.numberOfJobs();
if (job > 1) {
// Split the job into "yStep"-sized jobs but there a few jobs that need to be slightly larger since
// yStep * jobs < total size. These extras are handled by the remainder "jobsWithExtra".
const int yStep = (data.heightDecreasedByOne - 1) / job;
const int jobsWithExtra = (data.heightDecreasedByOne - 1) % job;
int yStart = 1;
for (--job; job >= 0; --job) {
PlatformApplyGenericParameters& params = parallelJobs.parameter(job);
params.filter = this;
params.data = data;
params.paintingData = paintingData;
params.yStart = yStart;
yStart += job < jobsWithExtra ? yStep + 1 : yStep;
params.yEnd = yStart;
}
parallelJobs.execute();
return;
}
// Fallback to single threaded mode.
}
platformApplyGenericPaint(data, paintingData, 1, data.heightDecreasedByOne);
}
inline void FELighting::platformApplyGeneric(LightingData& data, LightSource::PaintingData& paintingData)
{
int optimalThreadNumber = ((data.widthDecreasedByOne - 1) * (data.heightDecreasedByOne - 1)) / s_minimalRectDimension;
if (optimalThreadNumber > 1) {
// Initialize parallel jobs
WTF::ParallelJobs<PlatformApplyGenericParameters> parallelJobs(&platformApplyGenericWorker, optimalThreadNumber);
// Fill the parameter array
int job = parallelJobs.numberOfJobs();
if (job > 1) {
int yStart = 1;
int yStep = (data.heightDecreasedByOne - 1) / job;
for (--job; job >= 0; --job) {
PlatformApplyGenericParameters& params = parallelJobs.parameter(job);
params.filter = this;
params.data = data;
params.paintingData = paintingData;
params.yStart = yStart;
if (job > 0) {
params.yEnd = yStart + yStep;
yStart += yStep;
} else
params.yEnd = data.heightDecreasedByOne;
}
parallelJobs.execute();
return;
}
// Fallback to single threaded mode.
}
platformApplyGenericPaint(data, paintingData, 1, data.heightDecreasedByOne);
}
