skeletal animation support added to API and software backend

SkCanvas::drawVertices now supports overloads that take an array of bone deformation matrices.
SkVertices::MakeCopy and SkVertices::Builder now support two additional optional attributes, boneIndices and boneWeights.

Bug: skia:
Change-Id: I30a3b11691e7cdb13924907cc1401ff86d127aea
Reviewed-on: https://skia-review.googlesource.com/137221
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Ruiqi Mao <ruiqimao@google.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/core/SkColorSpaceXformCanvas.cpp b/src/core/SkColorSpaceXformCanvas.cpp
index 3ef4d6d00d..caf07fb5d9 100644
--- a/src/core/SkColorSpaceXformCanvas.cpp
+++ b/src/core/SkColorSpaceXformCanvas.cpp
@@ -90,8 +90,8 @@ public:
                       const SkPaint& paint) override {
         fTarget->drawPoints(mode, count, pts, fXformer->apply(paint));
     }
-    void onDrawVerticesObject(const SkVertices* vertices, SkBlendMode mode,
-                              const SkPaint& paint) override {
+    void onDrawVerticesObject(const SkVertices* vertices, const SkMatrix* bones, int boneCount,
+                              SkBlendMode mode, const SkPaint& paint) override {
         sk_sp<SkVertices> copy;
         if (vertices->hasColors()) {
             int count = vertices->vertexCount();
@@ -99,11 +99,12 @@ public:
             fXformer->apply(xformed.begin(), vertices->colors(), count);
             copy = SkVertices::MakeCopy(vertices->mode(), count, vertices->positions(),
                                         vertices->texCoords(), xformed.begin(),
+                                        vertices->boneIndices(), vertices->boneWeights(),
                                         vertices->indexCount(), vertices->indices());
             vertices = copy.get();
         }
 
-        fTarget->drawVertices(vertices, mode, fXformer->apply(paint));
+        fTarget->drawVertices(vertices, bones, boneCount, mode, fXformer->apply(paint));
     }
 
     void onDrawText(const void* ptr, size_t len,