common: partial rendering stabilization++

There are more corner case issues after the partial rendering
introduction, this covers all-in-one.

src/renderer/gl_engine/tvgGlRenderer.cpp

@@ -1481,7 +1481,7 @@ bool GlRenderer::postUpdate()
 }
 
 
-void GlRenderer::damage(const RenderRegion& region)
+void GlRenderer::damage(TVG_UNUSED RenderData rd, TVG_UNUSED const RenderRegion& region)
 {
     //TODO
 }

src/renderer/gl_engine/tvgGlRenderer.h

@@ -100,7 +100,7 @@ public:
     void dispose(RenderEffect* effect) override;
 
     //partial rendering
-    void damage(const RenderRegion& region) override;
+    void damage(RenderData rd, const RenderRegion& region) override;
     bool partial(bool disable) override;
 
     static GlRenderer* gen(uint32_t threads);

src/renderer/sw_engine/tvgSwRenderer.cpp

@@ -162,7 +162,7 @@ struct SwShapeTask : SwTask
         }
 
         curBox = renderBox; //sync
-        if (!nodirty) dirtyRegion->add(&prvBox, &curBox);
+        if (!nodirty) dirtyRegion->add(prvBox, curBox);
         return;
 
     err:
@@ -170,7 +170,7 @@ struct SwShapeTask : SwTask
         shapeReset(&shape);
         rleReset(shape.strokeRle);
         shapeDelOutline(&shape, mpool, tid);
-        if (!nodirty) dirtyRegion->add(&prvBox, &curBox);
+        if (!nodirty) dirtyRegion->add(prvBox, curBox);
     }
 
     void dispose() override
@@ -221,7 +221,7 @@ struct SwImageTask : SwTask
                         auto clipper = static_cast<SwTask*>(*p);
                         if (!clipper->clip(image.rle)) goto err;
                     }
-                    if (!nodirty) dirtyRegion->add(&prvBox, &curBox);
+                    if (!nodirty) dirtyRegion->add(prvBox, curBox);
                     return;
                 }
             }
@@ -232,7 +232,7 @@ struct SwImageTask : SwTask
         rleReset(image.rle);
     end:
         imageDelOutline(&image, mpool, tid);
-        if (!nodirty) dirtyRegion->add(&prvBox, &curBox);
+        if (!nodirty) dirtyRegion->add(prvBox, curBox);
     }
 
     void dispose() override
@@ -381,9 +381,11 @@ bool SwRenderer::postRender()
 }
 
 
-void SwRenderer::damage(const RenderRegion& region)
+void SwRenderer::damage(RenderData rd, const RenderRegion& region)
 {
-    dirtyRegion.add(&region, nullptr);
+    SwTask* task = static_cast<SwTask*>(rd);
+    if (task && task->opacity == 0) return;
+    dirtyRegion.add(region);
 }
 
 

src/renderer/sw_engine/tvgSwRenderer.h

@@ -68,7 +68,7 @@ public:
     void dispose(RenderEffect* effect) override;
 
     //partial rendering
-    void damage(const RenderRegion& region) override;
+    void damage(RenderData rd, const RenderRegion& region) override;
     bool partial(bool disable) override;
 
     static SwRenderer* gen(uint32_t threads);

src/renderer/tvgPaint.h

@@ -131,7 +131,12 @@ namespace tvg
 
         void damage(const RenderRegion& vport)
         {
-            if (renderer) renderer->damage(vport);
+            if (renderer) renderer->damage(rd, vport);
+        }
+
+        void damage()
+        {
+            if (renderer) renderer->damage(rd, bounds(renderer));
         }
 
         void mark(CompositionFlag flag)

src/renderer/tvgRender.cpp

@@ -158,25 +158,39 @@ void RenderDirtyRegion::init(uint32_t w, uint32_t h)
 }
 
 
-void RenderDirtyRegion::add(const RenderRegion* prv, const RenderRegion* cur)
+bool RenderDirtyRegion::add(const RenderRegion& bbox)
 {
-    if (disabled) return;
-
-    auto pvalid = prv ? prv->valid() : false;
-    auto cvalid = cur ? cur->valid() : false;
-    if (!pvalid && !cvalid) return;
+    if (disabled) return false;
 
     for (int idx = 0; idx < PARTITIONING; ++idx) {
         auto& partition = partitions[idx];
-        if (pvalid && prv->intersected(partition.region)) {
+        if (bbox.max.y <= partition.region.min.y) break;
+        if (bbox.intersected(partition.region)) {
             ScopedLock lock(key);
-            partition.list[partition.current].push(RenderRegion::intersect(*prv, partition.region));
-        }
-        if (cvalid && cur->intersected(partition.region)) {
-            ScopedLock lock(key);
-            partition.list[partition.current].push(RenderRegion::intersect(*cur, partition.region));
+            partition.list[partition.current].push(RenderRegion::intersect(bbox, partition.region));
         }
     }
+    return true;
+}
+
+
+bool RenderDirtyRegion::add(const RenderRegion& prv, const RenderRegion& cur)
+{
+    if (disabled) return false;
+    if (prv == cur) return add(prv);
+
+    for (int idx = 0; idx < PARTITIONING; ++idx) {
+        auto& partition = partitions[idx];
+        if (prv.intersected(partition.region)) {
+            ScopedLock lock(key);
+            partition.list[partition.current].push(RenderRegion::intersect(prv, partition.region));
+        }
+        if (cur.intersected(partition.region)) {
+            ScopedLock lock(key);
+            partition.list[partition.current].push(RenderRegion::intersect(cur, partition.region));
+        }
+    }
+    return true;
 }
 
 
@@ -222,6 +236,12 @@ void RenderDirtyRegion::subdivide(Array<RenderRegion>& targets, uint32_t idx, Re
     subtract(temp[0], lhs);
     subtract(temp[0], rhs);
 
+    //Please reserve memory enough with targets.reserve()
+    if (targets.count + cnt - 1 > targets.reserved) {
+        TVGERR("RENDERER", "reserved(%d), required(%d)", targets.reserved, targets.count + cnt - 1);
+        return;
+    }
+
     /* Considered using a list to avoid memory shifting,
        but ultimately, the array outperformed the list due to better cache locality. */
 
@@ -246,12 +266,12 @@ void RenderDirtyRegion::commit()
     for (int idx = 0; idx < PARTITIONING; ++idx) {
         auto current = partitions[idx].current;
         auto& targets = partitions[idx].list[current];
-        if (targets.empty()) return;
+        if (targets.empty()) continue;
 
         current = !current; //swapping buffers
         auto& output = partitions[idx].list[current];
 
-        targets.reserve(targets.count * 5);  //one intersection can be divided up to 5
+        targets.reserve(targets.count * 10);  //one intersection can be divided up to 5
         output.reserve(targets.count);
 
         partitions[idx].current = current;

src/renderer/tvgRender.h

@@ -164,7 +164,8 @@ struct RenderRegion
 
         void init(uint32_t w, uint32_t h);
         void commit();
-        void add(const RenderRegion* prv, const RenderRegion* cur);  //collect the old and new dirty regions together
+        bool add(const RenderRegion& bbox);
+        bool add(const RenderRegion& prv, const RenderRegion& cur);  //collect the old and new dirty regions together
         void clear();
 
         bool deactivate(bool on)
@@ -541,7 +542,7 @@ public:
     virtual void dispose(RenderEffect* effect) = 0;
 
     //partial rendering
-    virtual void damage(const RenderRegion& region) = 0;
+    virtual void damage(RenderData rd, const RenderRegion& region) = 0;
     virtual bool partial(bool disable) = 0;
 };
 

src/renderer/tvgScene.h

@@ -280,19 +280,32 @@ struct SceneImpl : Scene
 
     Result clearPaints()
     {
+        if (paints.empty()) return Result::Success;
+
+        //Don't need to damage for children
+        auto recover = (fixed && impl.renderer) ? impl.renderer->partial(true) : false;
+        auto partialDmg = !(effects || fixed || recover);
+
         auto itr = paints.begin();
         while (itr != paints.end()) {
             auto paint = PAINT((*itr));
+            //when the paint is destroyed damage will be triggered
+            if (paint->refCnt > 1 && partialDmg) paint->damage();
             paint->unref();
             paints.erase(itr++);
         }
 
+        if (effects || fixed) impl.damage(vport);  //redraw scene full region
+        if (fixed && impl.renderer) impl.renderer->partial(recover);
+
         return Result::Success;
     }
 
     Result remove(Paint* paint)
     {
         if (PAINT(paint)->parent != this) return Result::InsufficientCondition;
+        //when the paint is destroyed damage will be triggered
+        if (PAINT(paint)->refCnt > 1) PAINT(paint)->damage();
         PAINT(paint)->unref();
         paints.remove(paint);
         return Result::Success;

src/renderer/wg_engine/tvgWgRenderer.cpp

@@ -581,7 +581,7 @@ bool WgRenderer::postUpdate()
 }
 
 
-void WgRenderer::damage(const RenderRegion& region)
+void WgRenderer::damage(TVG_UNUSED RenderData rd, TVG_UNUSED const RenderRegion& region)
 {
     //TODO
 }

src/renderer/wg_engine/tvgWgRenderer.h

@@ -58,7 +58,7 @@ public:
     void dispose(RenderEffect* effect) override;
 
     //partial rendering
-    void damage(const RenderRegion& region) override;
+    void damage(RenderData rd, const RenderRegion& region) override;
     bool partial(bool disable) override;
 
     static WgRenderer* gen(uint32_t threads);