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Bug 1196462 - Add a pref to highlight checkerboarded areas for debugging. r=kats

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This commit is contained in:
Botond Ballo 2015-08-19 19:29:46 -04:00
parent afbfbc8a30
commit 1b379e6a04
3 changed files with 5 additions and 0 deletions
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3
gfx/layers/composite/ContainerLayerComposite.cpp
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@ -520,6 +520,9 @@ RenderLayers(ContainerT* aContainer,
gfxRGBA color;
if ((layer->GetContentFlags() & Layer::CONTENT_OPAQUE) &&
LayerHasCheckerboardingAPZC(layer, &color)) {
if (gfxPrefs::APZHighlightCheckerboardedAreas()) {
color = gfxRGBA(255 / 255.0, 188 / 255.0, 217 / 255.0, 1); // "Cotton Candy"
}
// Ideally we would want to intersect the checkerboard region from the APZ with the layer bounds
// and only fill in that area. However the layer bounds takes into account the base translation
// for the painted layer whereas the checkerboard region does not. One does not simply

1
gfx/thebes/gfxPrefs.h
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@ -160,6 +160,7 @@ private:
DECL_GFX_PREF(Live, "apz.fling_repaint_interval", APZFlingRepaintInterval, int32_t, 75);
DECL_GFX_PREF(Once, "apz.fling_stop_on_tap_threshold", APZFlingStopOnTapThreshold, float, 0.05f);
DECL_GFX_PREF(Once, "apz.fling_stopped_threshold", APZFlingStoppedThreshold, float, 0.01f);
DECL_GFX_PREF(Once, "apz.highlight_checkerboarded_areas", APZHighlightCheckerboardedAreas, bool, false);
DECL_GFX_PREF(Once, "apz.max_velocity_inches_per_ms", APZMaxVelocity, float, -1.0f);
DECL_GFX_PREF(Once, "apz.max_velocity_queue_size", APZMaxVelocityQueueSize, uint32_t, 5);
DECL_GFX_PREF(Live, "apz.min_skate_speed", APZMinSkateSpeed, float, 1.0f);

1
modules/libpref/init/all.js
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@ -552,6 +552,7 @@ pref("apz.fling_curve_threshold_inches_per_ms", "-1.0");
pref("apz.fling_friction", "0.002");
pref("apz.fling_stop_on_tap_threshold", "0.05");
pref("apz.fling_stopped_threshold", "0.01");
pref("apz.highlight_checkerboarded_areas", false);
pref("apz.max_velocity_inches_per_ms", "-1.0");
pref("apz.max_velocity_queue_size", 5);
pref("apz.min_skate_speed", "1.0");