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Flip the stats graph and handle boundary conditions

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This commit is contained in:
Chinmay Garde 2015-09-30 14:47:57 -07:00
parent 52ad2a67e6
commit beef890122
2 changed files with 15 additions and 7 deletions
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21
sky/compositor/instrumentation.cc
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@ -27,6 +27,10 @@ void Stopwatch::stop() {
_laps[_current_sample] = _lastLap;
}
static inline constexpr double UnitFrameInterval(double frameTimeMS) {
return frameTimeMS * 60.0 * 1e-3;
}
void Stopwatch::visualize(SkCanvas& canvas, const SkRect& rect) const {
SkAutoCanvasRestore save(&canvas, false);
@ -41,14 +45,19 @@ void Stopwatch::visualize(SkCanvas& canvas, const SkRect& rect) const {
auto width = rect.width();
auto height = rect.height();
path.moveTo(0, 0);
path.lineTo(0, height * (_laps[0].InMillisecondsF() / 16.0));
auto unitHeight = (1.0 - UnitFrameInterval(_laps[0].InMillisecondsF()));
path.moveTo(0, height);
path.lineTo(0, height * unitHeight);
for (size_t i = 0; i < kMaxSamples; i++) {
path.lineTo(width * (static_cast<double>(i) / kMaxSamples),
height * (_laps[i].InMillisecondsF() / 16.0));
double unitWidth = (static_cast<double>(i + 1) / kMaxSamples);
unitHeight = (1.0 - UnitFrameInterval(_laps[i].InMillisecondsF()));
path.lineTo(width * unitWidth, height * unitHeight);
}
path.lineTo(width, 0);
path.lineTo(0, 0);
path.lineTo(width, height);
path.close();
paint.setColor(0xAA0000FF);

1
sky/compositor/statistics_layer.cc
View File

@ -39,7 +39,6 @@ void StatisticsLayer::Paint(PaintContext::ScopedFrame& frame) {
}
if (options_.isEnabled(CompositorOptions::Option::DisplayFrameStatistics)) {
// Frame (2032): 3.26ms
double msPerFrame = context.frame_time().lastLap().InMillisecondsF();
double fps = 1e3 / msPerFrame;