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Disable shadow drawing for empty/null outlines

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Change-Id: I60d0f326cfab97d88c49d17cf32e619b5e60b94a
This commit is contained in:
Chris Craik
2014-05-21 13:03:52 -07:00
parent d6a91b0bb6
commit 61317325b7
3 changed files with 18 additions and 27 deletions
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36
libs/hwui/DisplayListOp.h
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@@ -1547,32 +1547,23 @@ class DrawShadowOp : public DrawOp {
public:
DrawShadowOp(const mat4& transformXY, const mat4& transformZ,
float casterAlpha, bool casterUnclipped,
float fallbackWidth, float fallbackHeight,
const SkPath* outline, const SkPath* revealClip)
const SkPath* casterOutline, const SkPath* revealClip)
: DrawOp(NULL), mTransformXY(transformXY), mTransformZ(transformZ),
mCasterAlpha(casterAlpha), mCasterUnclipped(casterUnclipped),
mFallbackWidth(fallbackWidth), mFallbackHeight(fallbackHeight),
mOutline(outline), mRevealClip(revealClip) {}
mCasterAlpha(casterAlpha), mCasterUnclipped(casterUnclipped) {
mOutline = *casterOutline;
if (revealClip) {
// intersect the outline with the convex reveal clip
Op(mOutline, *revealClip, kIntersect_PathOp, &mOutline);
}
}
virtual status_t applyDraw(OpenGLRenderer& renderer, Rect& dirty) {
SkPath casterPerimeter;
if (!mOutline || mOutline->isEmpty()) {
casterPerimeter.addRect(0, 0, mFallbackWidth, mFallbackHeight);
} else {
casterPerimeter = *mOutline;
}
if (mRevealClip) {
// intersect the outline with the convex reveal clip
Op(casterPerimeter, *mRevealClip, kIntersect_PathOp, &casterPerimeter);
}
return renderer.drawShadow(mTransformXY, mTransformZ,
mCasterAlpha, mCasterUnclipped, &casterPerimeter);
mCasterAlpha, mCasterUnclipped, &mOutline);
}
virtual void output(int level, uint32_t logFlags) const {
OP_LOG("DrawShadow of outline %p", mOutline);
OP_LOGS("DrawShadow");
}
virtual const char* name() { return "DrawShadow"; }
@@ -1582,12 +1573,7 @@ private:
const mat4 mTransformZ;
const float mCasterAlpha;
const bool mCasterUnclipped;
const float mFallbackWidth;
const float mFallbackHeight;
// these point at convex SkPaths owned by RenderProperties, or null
const SkPath* mOutline;
const SkPath* mRevealClip;
SkPath mOutline;
};
class DrawLayerOp : public DrawOp {

4
libs/hwui/Outline.h
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@@ -49,6 +49,10 @@ public:
mBounds.set(outline->getBounds());
}
bool isEmpty() const {
return mType == kOutlineType_None;
}
void setEmpty() {
mType = kOutlineType_None;
mPath.reset();

5
libs/hwui/RenderNode.cpp
View File

@@ -473,7 +473,7 @@ void RenderNode::buildZSortedChildList(Vector<ZDrawDisplayListOpPair>& zTranslat
template <class T>
void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T& handler) {
if (properties().getAlpha() <= 0.0f) return;
if (properties().getAlpha() <= 0.0f || properties().getOutline().isEmpty()) return;
mat4 shadowMatrixXY(transformFromParent);
applyViewPropertyTransforms(shadowMatrixXY);
@@ -487,6 +487,8 @@ void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T&
const SkPath* revealClipPath = revealClip.hasConvexClip()
? revealClip.getPath() : NULL; // only pass the reveal clip's path if it's convex
if (revealClipPath && revealClipPath->isEmpty()) return;
/**
* The drawing area of the caster is always the same as the its perimeter (which
* the shadow system uses) *except* in the inverse clip case. Inform the shadow
@@ -498,7 +500,6 @@ void RenderNode::issueDrawShadowOperation(const Matrix4& transformFromParent, T&
DisplayListOp* shadowOp = new (handler.allocator()) DrawShadowOp(
shadowMatrixXY, shadowMatrixZ,
properties().getAlpha(), casterUnclipped,
properties().getWidth(), properties().getHeight(),
outlinePath, revealClipPath);
handler(shadowOp, PROPERTY_SAVECOUNT, properties().getClipToBounds());
}