Add AndroidPathRenderer to experimental gyp and get it compiling with Skia code.

https://codereview.appspot.com/6938074/


git-svn-id: http://skia.googlecode.com/svn/trunk@6874 2bbb7eff-a529-9590-31e7-b0007b416f81

3 files changed, 227 insertions, 204 deletions

diff --git a/experimental/AndroidPathRenderer/AndroidPathRenderer.cpp b/experimental/AndroidPathRenderer/AndroidPathRenderer.cpp
index e762eb2859..ef4ade24bf 100644
--- a/experimental/AndroidPathRenderer/AndroidPathRenderer.cpp
+++ b/experimental/AndroidPathRenderer/AndroidPathRenderer.cpp
@@ -18,20 +18,28 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#include <utils/Log.h>
-#include <utils/Trace.h>
+#include <SkTypes.h>
+#include <SkTrace.h>
+#include <SkMatrix.h>
+#include <SkPoint.h>
+
+#ifdef VERBOSE
+#define ALOGV SkDebugf
+#else
+#define ALOGV(x, ...)
+#endif
 
-#include "PathRenderer.h"
-#include "Matrix.h"
-#include "Vector.h"
+#include "AndroidPathRenderer.h"
 #include "Vertex.h"
 
+#include "cutils/compiler.h"
+
 namespace android {
 namespace uirenderer {
 
 #define THRESHOLD 0.5f
 
-SkRect PathRenderer::computePathBounds(const SkPath& path, const SkPaint* paint) {
+SkRect PathRenderer::ComputePathBounds(const SkPath& path, const SkPaint* paint) {
     SkRect bounds = path.getBounds();
     if (paint->getStyle() != SkPaint::kFill_Style) {
         float outset = paint->getStrokeWidth() * 0.5f;
@@ -40,12 +48,12 @@ SkRect PathRenderer::computePathBounds(const SkPath& path, const SkPaint* paint)
     return bounds;
 }
 
-void computeInverseScales(const mat4 *transform, float &inverseScaleX, float& inverseScaleY) {
-    if (CC_UNLIKELY(!transform->isPureTranslate())) {
-        float m00 = transform->data[Matrix4::kScaleX];
-        float m01 = transform->data[Matrix4::kSkewY];
-        float m10 = transform->data[Matrix4::kSkewX];
-        float m11 = transform->data[Matrix4::kScaleY];
+void computeInverseScales(const SkMatrix* transform, float &inverseScaleX, float& inverseScaleY) {
+    if (CC_UNLIKELY(transform && transform->getType() & (SkMatrix::kScale_Mask|SkMatrix::kAffine_Mask|SkMatrix::kPerspective_Mask))) {
+        float m00 = transform->getScaleX();
+        float m01 = transform->getSkewY();
+        float m10 = transform->getSkewX();
+        float m11 = transform->getScaleY();
         float scaleX = sqrt(m00 * m00 + m01 * m01);
         float scaleY = sqrt(m10 * m10 + m11 * m11);
         inverseScaleX = (scaleX != 0) ? (1.0f / scaleX) : 1.0f;
@@ -74,29 +82,31 @@ inline void copyAlphaVertex(AlphaVertex* destPtr, const AlphaVertex* srcPtr) {
  *
  * NOTE: assumes angles between normals 90 degrees or less
  */
-inline vec2 totalOffsetFromNormals(const vec2& normalA, const vec2& normalB) {
-    return (normalA + normalB) / (1 + fabs(normalA.dot(normalB)));
+inline SkVector totalOffsetFromNormals(const SkVector& normalA, const SkVector& normalB) {
+    SkVector pseudoNormal = normalA + normalB;
+    pseudoNormal.scale(1.0f / (1.0f + fabs(normalA.dot(normalB))));
+    return pseudoNormal;
 }
 
-inline void scaleOffsetForStrokeWidth(vec2& offset, float halfStrokeWidth,
+inline void scaleOffsetForStrokeWidth(SkVector& offset, float halfStrokeWidth,
         float inverseScaleX, float inverseScaleY) {
     if (halfStrokeWidth == 0.0f) {
         // hairline - compensate for scale
-        offset.x *= 0.5f * inverseScaleX;
-        offset.y *= 0.5f * inverseScaleY;
+        offset.fX *= 0.5f * inverseScaleX;
+        offset.fY *= 0.5f * inverseScaleY;
     } else {
-        offset *= halfStrokeWidth;
+        offset.scale(halfStrokeWidth);
     }
 }
 
-void getFillVerticesFromPerimeter(const Vector<Vertex>& perimeter, VertexBuffer& vertexBuffer) {
-    Vertex* buffer = vertexBuffer.alloc<Vertex>(perimeter.size());
+void getFillVerticesFromPerimeter(const SkTArray<Vertex, true>& perimeter, VertexBuffer* vertexBuffer) {
+    Vertex* buffer = vertexBuffer->alloc<Vertex>(perimeter.count());
 
     int currentIndex = 0;
     // zig zag between all previous points on the inside of the hull to create a
     // triangle strip that fills the hull
     int srcAindex = 0;
-    int srcBindex = perimeter.size() - 1;
+    int srcBindex = perimeter.count() - 1;
     while (srcAindex <= srcBindex) {
         copyVertex(&buffer[currentIndex++], &perimeter[srcAindex]);
         if (srcAindex == srcBindex) break;
@@ -106,32 +116,34 @@ void getFillVerticesFromPerimeter(const Vector<Vertex>& perimeter, VertexBuffer&
     }
 }
 
-void getStrokeVerticesFromPerimeter(const Vector<Vertex>& perimeter, float halfStrokeWidth,
-        VertexBuffer& vertexBuffer, float inverseScaleX, float inverseScaleY) {
-    Vertex* buffer = vertexBuffer.alloc<Vertex>(perimeter.size() * 2 + 2);
+void getStrokeVerticesFromPerimeter(const SkTArray<Vertex, true>& perimeter, float halfStrokeWidth,
+        VertexBuffer* vertexBuffer, float inverseScaleX, float inverseScaleY) {
+    Vertex* buffer = vertexBuffer->alloc<Vertex>(perimeter.count() * 2 + 2);
 
     int currentIndex = 0;
-    const Vertex* last = &(perimeter[perimeter.size() - 1]);
+    const Vertex* last = &(perimeter[perimeter.count() - 1]);
     const Vertex* current = &(perimeter[0]);
-    vec2 lastNormal(current->position[1] - last->position[1],
-            last->position[0] - current->position[0]);
+    SkVector lastNormal;
+    lastNormal.set(current->position[1] - last->position[1],
+                   last->position[0] - current->position[0]);
     lastNormal.normalize();
-    for (unsigned int i = 0; i < perimeter.size(); i++) {
-        const Vertex* next = &(perimeter[i + 1 >= perimeter.size() ? 0 : i + 1]);
-        vec2 nextNormal(next->position[1] - current->position[1],
-                current->position[0] - next->position[0]);
+    for (int i = 0; i < perimeter.count(); i++) {
+        const Vertex* next = &(perimeter[i + 1 >= perimeter.count() ? 0 : i + 1]);
+        SkVector nextNormal;
+        nextNormal.set(next->position[1] - current->position[1],
+                       current->position[0] - next->position[0]);
         nextNormal.normalize();
 
-        vec2 totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
+        SkVector totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
         scaleOffsetForStrokeWidth(totalOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
 
         Vertex::set(&buffer[currentIndex++],
-                current->position[0] + totalOffset.x,
-                current->position[1] + totalOffset.y);
+                current->position[0] + totalOffset.fX,
+                current->position[1] + totalOffset.fY);
 
         Vertex::set(&buffer[currentIndex++],
-                current->position[0] - totalOffset.x,
-                current->position[1] - totalOffset.y);
+                current->position[0] - totalOffset.fX,
+                current->position[1] - totalOffset.fY);
 
         last = current;
         current = next;
@@ -143,20 +155,21 @@ void getStrokeVerticesFromPerimeter(const Vector<Vertex>& perimeter, float halfS
     copyVertex(&buffer[currentIndex++], &buffer[1]);
 }
 
-void getStrokeVerticesFromUnclosedVertices(const Vector<Vertex>& vertices, float halfStrokeWidth,
-        VertexBuffer& vertexBuffer, float inverseScaleX, float inverseScaleY) {
-    Vertex* buffer = vertexBuffer.alloc<Vertex>(vertices.size() * 2);
+void getStrokeVerticesFromUnclosedVertices(const SkTArray<Vertex, true>& vertices, float halfStrokeWidth,
+        VertexBuffer* vertexBuffer, float inverseScaleX, float inverseScaleY) {
+    Vertex* buffer = vertexBuffer->alloc<Vertex>(vertices.count() * 2);
 
     int currentIndex = 0;
     const Vertex* current = &(vertices[0]);
-    vec2 lastNormal;
-    for (unsigned int i = 0; i < vertices.size() - 1; i++) {
+    SkVector lastNormal;
+    for (int i = 0; i < vertices.count() - 1; i++) {
         const Vertex* next = &(vertices[i + 1]);
-        vec2 nextNormal(next->position[1] - current->position[1],
-                current->position[0] - next->position[0]);
+        SkVector nextNormal;
+        nextNormal.set(next->position[1] - current->position[1],
+                       current->position[0] - next->position[0]);
         nextNormal.normalize();
 
-        vec2 totalOffset;
+        SkVector totalOffset;
         if (i == 0) {
             totalOffset = nextNormal;
         } else {
@@ -165,64 +178,66 @@ void getStrokeVerticesFromUnclosedVertices(const Vector<Vertex>& vertices, float
         scaleOffsetForStrokeWidth(totalOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
 
         Vertex::set(&buffer[currentIndex++],
-                current->position[0] + totalOffset.x,
-                current->position[1] + totalOffset.y);
+                current->position[0] + totalOffset.fX,
+                current->position[1] + totalOffset.fY);
 
         Vertex::set(&buffer[currentIndex++],
-                current->position[0] - totalOffset.x,
-                current->position[1] - totalOffset.y);
+                current->position[0] - totalOffset.fX,
+                current->position[1] - totalOffset.fY);
 
         current = next;
         lastNormal = nextNormal;
     }
 
-    vec2 totalOffset = lastNormal;
+    SkVector totalOffset = lastNormal;
     scaleOffsetForStrokeWidth(totalOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
 
     Vertex::set(&buffer[currentIndex++],
-            current->position[0] + totalOffset.x,
-            current->position[1] + totalOffset.y);
+            current->position[0] + totalOffset.fX,
+            current->position[1] + totalOffset.fY);
     Vertex::set(&buffer[currentIndex++],
-            current->position[0] - totalOffset.x,
-            current->position[1] - totalOffset.y);
+            current->position[0] - totalOffset.fX,
+            current->position[1] - totalOffset.fY);
 #if VERTEX_DEBUG
     for (unsigned int i = 0; i < vertexBuffer.getSize(); i++) {
-        ALOGD("point at %f %f", buffer[i].position[0], buffer[i].position[1]);
+        SkDebugf("point at %f %f", buffer[i].position[0], buffer[i].position[1]);
     }
 #endif
 }
 
-void getFillVerticesFromPerimeterAA(const Vector<Vertex>& perimeter, VertexBuffer& vertexBuffer,
+void getFillVerticesFromPerimeterAA(const SkTArray<Vertex, true>& perimeter, VertexBuffer* vertexBuffer,
          float inverseScaleX, float inverseScaleY) {
-    AlphaVertex* buffer = vertexBuffer.alloc<AlphaVertex>(perimeter.size() * 3 + 2);
+    AlphaVertex* buffer = vertexBuffer->alloc<AlphaVertex>(perimeter.count() * 3 + 2);
 
     // generate alpha points - fill Alpha vertex gaps in between each point with
     // alpha 0 vertex, offset by a scaled normal.
     int currentIndex = 0;
-    const Vertex* last = &(perimeter[perimeter.size() - 1]);
+    const Vertex* last = &(perimeter[perimeter.count() - 1]);
     const Vertex* current = &(perimeter[0]);
-    vec2 lastNormal(current->position[1] - last->position[1],
-            last->position[0] - current->position[0]);
+    SkVector lastNormal;
+    lastNormal.set(current->position[1] - last->position[1],
+                   last->position[0] - current->position[0]);
     lastNormal.normalize();
-    for (unsigned int i = 0; i < perimeter.size(); i++) {
-        const Vertex* next = &(perimeter[i + 1 >= perimeter.size() ? 0 : i + 1]);
-        vec2 nextNormal(next->position[1] - current->position[1],
-                current->position[0] - next->position[0]);
+    for (int i = 0; i < perimeter.count(); i++) {
+        const Vertex* next = &(perimeter[i + 1 >= perimeter.count() ? 0 : i + 1]);
+        SkVector nextNormal;
+        nextNormal.set(next->position[1] - current->position[1],
+                       current->position[0] - next->position[0]);
         nextNormal.normalize();
 
         // AA point offset from original point is that point's normal, such that each side is offset
         // by .5 pixels
-        vec2 totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
-        totalOffset.x *= 0.5f * inverseScaleX;
-        totalOffset.y *= 0.5f * inverseScaleY;
+        SkVector totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
+        totalOffset.fX *= 0.5f * inverseScaleX;
+        totalOffset.fY *= 0.5f * inverseScaleY;
 
         AlphaVertex::set(&buffer[currentIndex++],
-                current->position[0] + totalOffset.x,
-                current->position[1] + totalOffset.y,
+                current->position[0] + totalOffset.fX,
+                current->position[1] + totalOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[currentIndex++],
-                current->position[0] - totalOffset.x,
-                current->position[1] - totalOffset.y,
+                current->position[0] - totalOffset.fX,
+                current->position[1] - totalOffset.fY,
                 1.0f);
 
         last = current;
@@ -238,7 +253,7 @@ void getFillVerticesFromPerimeterAA(const Vector<Vertex>& perimeter, VertexBuffe
     // triangle strip that fills the hull, repeating the first inner point to
     // create degenerate tris to start inside path
     int srcAindex = 0;
-    int srcBindex = perimeter.size() - 1;
+    int srcBindex = perimeter.count() - 1;
     while (srcAindex <= srcBindex) {
         copyAlphaVertex(&buffer[currentIndex++], &buffer[srcAindex * 2 + 1]);
         if (srcAindex == srcBindex) break;
@@ -249,15 +264,15 @@ void getFillVerticesFromPerimeterAA(const Vector<Vertex>& perimeter, VertexBuffe
 
 #if VERTEX_DEBUG
     for (unsigned int i = 0; i < vertexBuffer.getSize(); i++) {
-        ALOGD("point at %f %f, alpha %f", buffer[i].position[0], buffer[i].position[1], buffer[i].alpha);
+        SkDebugf("point at %f %f, alpha %f", buffer[i].position[0], buffer[i].position[1], buffer[i].alpha);
     }
 #endif
 }
 
 
-void getStrokeVerticesFromUnclosedVerticesAA(const Vector<Vertex>& vertices, float halfStrokeWidth,
-        VertexBuffer& vertexBuffer, float inverseScaleX, float inverseScaleY) {
-    AlphaVertex* buffer = vertexBuffer.alloc<AlphaVertex>(6 * vertices.size() + 2);
+void getStrokeVerticesFromUnclosedVerticesAA(const SkTArray<Vertex, true>& vertices, float halfStrokeWidth,
+        VertexBuffer* vertexBuffer, float inverseScaleX, float inverseScaleY) {
+    AlphaVertex* buffer = vertexBuffer->alloc<AlphaVertex>(6 * vertices.count() + 2);
 
     // avoid lines smaller than hairline since they break triangle based sampling. instead reducing
     // alpha value (TODO: support different X/Y scale)
@@ -269,47 +284,49 @@ void getStrokeVerticesFromUnclosedVerticesAA(const Vector<Vertex>& vertices, flo
     }
 
     // there is no outer/inner here, using them for consistency with below approach
-    int offset = 2 * (vertices.size() - 2);
+    int offset = 2 * (vertices.count() - 2);
     int currentAAOuterIndex = 2;
     int currentAAInnerIndex = 2 * offset + 5; // reversed
     int currentStrokeIndex = currentAAInnerIndex + 7;
 
     const Vertex* last = &(vertices[0]);
     const Vertex* current = &(vertices[1]);
-    vec2 lastNormal(current->position[1] - last->position[1],
-            last->position[0] - current->position[0]);
+    SkVector lastNormal;
+    lastNormal.set(current->position[1] - last->position[1],
+                   last->position[0] - current->position[0]);
     lastNormal.normalize();
 
     {
         // start cap
-        vec2 totalOffset = lastNormal;
-        vec2 AAOffset = totalOffset;
-        AAOffset.x *= 0.5f * inverseScaleX;
-        AAOffset.y *= 0.5f * inverseScaleY;
+        SkVector totalOffset = lastNormal;
+        SkVector AAOffset = totalOffset;
+        AAOffset.fX *= 0.5f * inverseScaleX;
+        AAOffset.fY *= 0.5f * inverseScaleY;
 
-        vec2 innerOffset = totalOffset;
+        SkVector innerOffset = totalOffset;
         scaleOffsetForStrokeWidth(innerOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
-        vec2 outerOffset = innerOffset + AAOffset;
+        SkVector outerOffset = innerOffset + AAOffset;
         innerOffset -= AAOffset;
 
         // TODO: support square cap by changing this offset to incorporate halfStrokeWidth
-        vec2 capAAOffset(AAOffset.y, -AAOffset.x);
+        SkVector capAAOffset;
+        capAAOffset.set(AAOffset.fY, -AAOffset.fX);
         AlphaVertex::set(&buffer[0],
-                last->position[0] + outerOffset.x + capAAOffset.x,
-                last->position[1] + outerOffset.y + capAAOffset.y,
+                last->position[0] + outerOffset.fX + capAAOffset.fX,
+                last->position[1] + outerOffset.fY + capAAOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[1],
-                last->position[0] + innerOffset.x - capAAOffset.x,
-                last->position[1] + innerOffset.y - capAAOffset.y,
+                last->position[0] + innerOffset.fX - capAAOffset.fX,
+                last->position[1] + innerOffset.fY - capAAOffset.fY,
                 maxAlpha);
 
         AlphaVertex::set(&buffer[2 * offset + 6],
-                last->position[0] - outerOffset.x + capAAOffset.x,
-                last->position[1] - outerOffset.y + capAAOffset.y,
+                last->position[0] - outerOffset.fX + capAAOffset.fX,
+                last->position[1] - outerOffset.fY + capAAOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[2 * offset + 7],
-                last->position[0] - innerOffset.x - capAAOffset.x,
-                last->position[1] - innerOffset.y - capAAOffset.y,
+                last->position[0] - innerOffset.fX - capAAOffset.fX,
+                last->position[1] - innerOffset.fY - capAAOffset.fY,
                 maxAlpha);
         copyAlphaVertex(&buffer[2 * offset + 8], &buffer[0]);
         copyAlphaVertex(&buffer[2 * offset + 9], &buffer[1]);
@@ -317,47 +334,48 @@ void getStrokeVerticesFromUnclosedVerticesAA(const Vector<Vertex>& vertices, flo
         copyAlphaVertex(&buffer[2 * offset + 11], &buffer[2 * offset + 7]);
     }
 
-    for (unsigned int i = 1; i < vertices.size() - 1; i++) {
+    for (int i = 1; i < vertices.count() - 1; i++) {
         const Vertex* next = &(vertices[i + 1]);
-        vec2 nextNormal(next->position[1] - current->position[1],
-                current->position[0] - next->position[0]);
+        SkVector nextNormal;
+        nextNormal.set(next->position[1] - current->position[1],
+                       current->position[0] - next->position[0]);
         nextNormal.normalize();
 
-        vec2 totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
-        vec2 AAOffset = totalOffset;
-        AAOffset.x *= 0.5f * inverseScaleX;
-        AAOffset.y *= 0.5f * inverseScaleY;
+        SkVector totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
+        SkVector AAOffset = totalOffset;
+        AAOffset.fX *= 0.5f * inverseScaleX;
+        AAOffset.fY *= 0.5f * inverseScaleY;
 
-        vec2 innerOffset = totalOffset;
+        SkVector innerOffset = totalOffset;
         scaleOffsetForStrokeWidth(innerOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
-        vec2 outerOffset = innerOffset + AAOffset;
+        SkVector outerOffset = innerOffset + AAOffset;
         innerOffset -= AAOffset;
 
         AlphaVertex::set(&buffer[currentAAOuterIndex++],
-                current->position[0] + outerOffset.x,
-                current->position[1] + outerOffset.y,
+                current->position[0] + outerOffset.fX,
+                current->position[1] + outerOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[currentAAOuterIndex++],
-                current->position[0] + innerOffset.x,
-                current->position[1] + innerOffset.y,
+                current->position[0] + innerOffset.fX,
+                current->position[1] + innerOffset.fY,
                 maxAlpha);
 
         AlphaVertex::set(&buffer[currentStrokeIndex++],
-                current->position[0] + innerOffset.x,
-                current->position[1] + innerOffset.y,
+                current->position[0] + innerOffset.fX,
+                current->position[1] + innerOffset.fY,
                 maxAlpha);
         AlphaVertex::set(&buffer[currentStrokeIndex++],
-                current->position[0] - innerOffset.x,
-                current->position[1] - innerOffset.y,
+                current->position[0] - innerOffset.fX,
+                current->position[1] - innerOffset.fY,
                 maxAlpha);
 
         AlphaVertex::set(&buffer[currentAAInnerIndex--],
-                current->position[0] - innerOffset.x,
-                current->position[1] - innerOffset.y,
+                current->position[0] - innerOffset.fX,
+                current->position[1] - innerOffset.fY,
                 maxAlpha);
         AlphaVertex::set(&buffer[currentAAInnerIndex--],
-                current->position[0] - outerOffset.x,
-                current->position[1] - outerOffset.y,
+                current->position[0] - outerOffset.fX,
+                current->position[1] - outerOffset.fY,
                 0.0f);
 
         last = current;
@@ -367,52 +385,53 @@ void getStrokeVerticesFromUnclosedVerticesAA(const Vector<Vertex>& vertices, flo
 
     {
         // end cap
-        vec2 totalOffset = lastNormal;
-        vec2 AAOffset = totalOffset;
-        AAOffset.x *= 0.5f * inverseScaleX;
-        AAOffset.y *= 0.5f * inverseScaleY;
+        SkVector totalOffset = lastNormal;
+        SkVector AAOffset = totalOffset;
+        AAOffset.fX *= 0.5f * inverseScaleX;
+        AAOffset.fY *= 0.5f * inverseScaleY;
 
-        vec2 innerOffset = totalOffset;
+        SkVector innerOffset = totalOffset;
         scaleOffsetForStrokeWidth(innerOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
-        vec2 outerOffset = innerOffset + AAOffset;
+        SkVector outerOffset = innerOffset + AAOffset;
         innerOffset -= AAOffset;
 
         // TODO: support square cap by changing this offset to incorporate halfStrokeWidth
-        vec2 capAAOffset(-AAOffset.y, AAOffset.x);
+        SkVector capAAOffset;
+        capAAOffset.set(-AAOffset.fY, AAOffset.fX);
 
         AlphaVertex::set(&buffer[offset + 2],
-                current->position[0] + outerOffset.x + capAAOffset.x,
-                current->position[1] + outerOffset.y + capAAOffset.y,
+                current->position[0] + outerOffset.fX + capAAOffset.fX,
+                current->position[1] + outerOffset.fY + capAAOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[offset + 3],
-                current->position[0] + innerOffset.x - capAAOffset.x,
-                current->position[1] + innerOffset.y - capAAOffset.y,
+                current->position[0] + innerOffset.fX - capAAOffset.fX,
+                current->position[1] + innerOffset.fY - capAAOffset.fY,
                 maxAlpha);
 
         AlphaVertex::set(&buffer[offset + 4],
-                current->position[0] - outerOffset.x + capAAOffset.x,
-                current->position[1] - outerOffset.y + capAAOffset.y,
+                current->position[0] - outerOffset.fX + capAAOffset.fX,
+                current->position[1] - outerOffset.fY + capAAOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[offset + 5],
-                current->position[0] - innerOffset.x - capAAOffset.x,
-                current->position[1] - innerOffset.y - capAAOffset.y,
+                current->position[0] - innerOffset.fX - capAAOffset.fX,
+                current->position[1] - innerOffset.fY - capAAOffset.fY,
                 maxAlpha);
 
-        copyAlphaVertex(&buffer[vertexBuffer.getSize() - 2], &buffer[offset + 3]);
-        copyAlphaVertex(&buffer[vertexBuffer.getSize() - 1], &buffer[offset + 5]);
+        copyAlphaVertex(&buffer[vertexBuffer->getSize() - 2], &buffer[offset + 3]);
+        copyAlphaVertex(&buffer[vertexBuffer->getSize() - 1], &buffer[offset + 5]);
     }
 
 #if VERTEX_DEBUG
     for (unsigned int i = 0; i < vertexBuffer.getSize(); i++) {
-        ALOGD("point at %f %f, alpha %f", buffer[i].position[0], buffer[i].position[1], buffer[i].alpha);
+        SkDebugf("point at %f %f, alpha %f", buffer[i].position[0], buffer[i].position[1], buffer[i].alpha);
     }
 #endif
 }
 
 
-void getStrokeVerticesFromPerimeterAA(const Vector<Vertex>& perimeter, float halfStrokeWidth,
-        VertexBuffer& vertexBuffer, float inverseScaleX, float inverseScaleY) {
-    AlphaVertex* buffer = vertexBuffer.alloc<AlphaVertex>(6 * perimeter.size() + 8);
+void getStrokeVerticesFromPerimeterAA(const SkTArray<Vertex, true>& perimeter, float halfStrokeWidth,
+        VertexBuffer* vertexBuffer, float inverseScaleX, float inverseScaleY) {
+    AlphaVertex* buffer = vertexBuffer->alloc<AlphaVertex>(6 * perimeter.count() + 8);
 
     // avoid lines smaller than hairline since they break triangle based sampling. instead reducing
     // alpha value (TODO: support different X/Y scale)
@@ -423,57 +442,59 @@ void getStrokeVerticesFromPerimeterAA(const Vector<Vertex>& perimeter, float hal
         halfStrokeWidth = 0.0f;
     }
 
-    int offset = 2 * perimeter.size() + 3;
+    int offset = 2 * perimeter.count() + 3;
     int currentAAOuterIndex = 0;
     int currentStrokeIndex = offset;
     int currentAAInnerIndex = offset * 2;
 
-    const Vertex* last = &(perimeter[perimeter.size() - 1]);
+    const Vertex* last = &(perimeter[perimeter.count() - 1]);
     const Vertex* current = &(perimeter[0]);
-    vec2 lastNormal(current->position[1] - last->position[1],
-            last->position[0] - current->position[0]);
+    SkVector lastNormal;
+    lastNormal.set(current->position[1] - last->position[1],
+                   last->position[0] - current->position[0]);
     lastNormal.normalize();
-    for (unsigned int i = 0; i < perimeter.size(); i++) {
-        const Vertex* next = &(perimeter[i + 1 >= perimeter.size() ? 0 : i + 1]);
-        vec2 nextNormal(next->position[1] - current->position[1],
-                current->position[0] - next->position[0]);
+    for (int i = 0; i < perimeter.count(); i++) {
+        const Vertex* next = &(perimeter[i + 1 >= perimeter.count() ? 0 : i + 1]);
+        SkVector nextNormal;
+        nextNormal.set(next->position[1] - current->position[1],
+                       current->position[0] - next->position[0]);
         nextNormal.normalize();
 
-        vec2 totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
-        vec2 AAOffset = totalOffset;
-        AAOffset.x *= 0.5f * inverseScaleX;
-        AAOffset.y *= 0.5f * inverseScaleY;
+        SkVector totalOffset = totalOffsetFromNormals(lastNormal, nextNormal);
+        SkVector AAOffset = totalOffset;
+        AAOffset.fX *= 0.5f * inverseScaleX;
+        AAOffset.fY *= 0.5f * inverseScaleY;
 
-        vec2 innerOffset = totalOffset;
+        SkVector innerOffset = totalOffset;
         scaleOffsetForStrokeWidth(innerOffset, halfStrokeWidth, inverseScaleX, inverseScaleY);
-        vec2 outerOffset = innerOffset + AAOffset;
+        SkVector outerOffset = innerOffset + AAOffset;
         innerOffset -= AAOffset;
 
         AlphaVertex::set(&buffer[currentAAOuterIndex++],
-                current->position[0] + outerOffset.x,
-                current->position[1] + outerOffset.y,
+                current->position[0] + outerOffset.fX,
+                current->position[1] + outerOffset.fY,
                 0.0f);
         AlphaVertex::set(&buffer[currentAAOuterIndex++],
-                current->position[0] + innerOffset.x,
-                current->position[1] + innerOffset.y,
+                current->position[0] + innerOffset.fX,
+                current->position[1] + innerOffset.fY,
                 maxAlpha);
 
         AlphaVertex::set(&buffer[currentStrokeIndex++],
-                current->position[0] + innerOffset.x,
-                current->position[1] + innerOffset.y,
+                current->position[0] + innerOffset.fX,
+                current->position[1] + innerOffset.fY,
                 maxAlpha);
         AlphaVertex::set(&buffer[currentStrokeIndex++],
-                current->position[0] - innerOffset.x,
-                current->position[1] - innerOffset.y,
+                current->position[0] - innerOffset.fX,
+                current->position[1] - innerOffset.fY,
                 maxAlpha);
 
         AlphaVertex::set(&buffer[currentAAInnerIndex++],
-                current->position[0] - innerOffset.x,
-                current->position[1] - innerOffset.y,
+                current->position[0] - innerOffset.fX,
+                current->position[1] - innerOffset.fY,
                 maxAlpha);
         AlphaVertex::set(&buffer[currentAAInnerIndex++],
-                current->position[0] - outerOffset.x,
-                current->position[1] - outerOffset.y,
+                current->position[0] - outerOffset.fX,
+                current->position[1] - outerOffset.fY,
                 0.0f);
 
         last = current;
@@ -496,14 +517,14 @@ void getStrokeVerticesFromPerimeterAA(const Vector<Vertex>& perimeter, float hal
 
 #if VERTEX_DEBUG
     for (unsigned int i = 0; i < vertexBuffer.getSize(); i++) {
-        ALOGD("point at %f %f, alpha %f", buffer[i].position[0], buffer[i].position[1], buffer[i].alpha);
+        SkDebugf("point at %f %f, alpha %f", buffer[i].position[0], buffer[i].position[1], buffer[i].alpha);
     }
 #endif
 }
 
-void PathRenderer::convexPathVertices(const SkPath &path, const SkPaint* paint,
-        const mat4 *transform, VertexBuffer& vertexBuffer) {
-    ATRACE_CALL();
+void PathRenderer::ConvexPathVertices(const SkPath &path, const SkPaint* paint,
+        const SkMatrix* transform, VertexBuffer* vertexBuffer) {
+    SK_TRACE_EVENT0("PathRenderer::convexPathVertices");
 
     SkPaint::Style style = paint->getStyle();
     bool isAA = paint->isAntiAlias();
@@ -511,7 +532,7 @@ void PathRenderer::convexPathVertices(const SkPath &path, const SkPaint* paint,
     float inverseScaleX, inverseScaleY;
     computeInverseScales(transform, inverseScaleX, inverseScaleY);
 
-    Vector<Vertex> tempVertices;
+    SkTArray<Vertex, true> tempVertices;
     float threshInvScaleX = inverseScaleX;
     float threshInvScaleY = inverseScaleY;
     if (style == SkPaint::kStroke_Style) {
@@ -526,17 +547,17 @@ void PathRenderer::convexPathVertices(const SkPath &path, const SkPaint* paint,
 
     // force close if we're filling the path, since fill path expects closed perimeter.
     bool forceClose = style != SkPaint::kStroke_Style;
-    bool wasClosed = convexPathPerimeterVertices(path, forceClose, threshInvScaleX * threshInvScaleX,
-            threshInvScaleY * threshInvScaleY, tempVertices);
+    bool wasClosed = ConvexPathPerimeterVertices(path, forceClose, threshInvScaleX * threshInvScaleX,
+            threshInvScaleY * threshInvScaleY, &tempVertices);
 
-    if (!tempVertices.size()) {
+    if (!tempVertices.count()) {
         // path was empty, return without allocating vertex buffer
         return;
     }
 
 #if VERTEX_DEBUG
-    for (unsigned int i = 0; i < tempVertices.size(); i++) {
-        ALOGD("orig path: point at %f %f", tempVertices[i].position[0], tempVertices[i].position[1]);
+    for (unsigned int i = 0; i < tempVertices.count(); i++) {
+        SkDebugf("orig path: point at %f %f", tempVertices[i].position[0], tempVertices[i].position[1]);
     }
 #endif
 
@@ -571,16 +592,17 @@ void PathRenderer::convexPathVertices(const SkPath &path, const SkPaint* paint,
 }
 
 
-void pushToVector(Vector<Vertex>& vertices, float x, float y) {
+void pushToVector(SkTArray<Vertex, true>* vertices, float x, float y) {
     // TODO: make this not yuck
-    vertices.push();
-    Vertex* newVertex = &(vertices.editArray()[vertices.size() - 1]);
+    vertices->push_back();
+    Vertex* newVertex = &((*vertices)[vertices->count() - 1]);
     Vertex::set(newVertex, x, y);
 }
 
-bool PathRenderer::convexPathPerimeterVertices(const SkPath& path, bool forceClose,
-        float sqrInvScaleX, float sqrInvScaleY, Vector<Vertex>& outputVertices) {
-    ATRACE_CALL();
+bool PathRenderer::ConvexPathPerimeterVertices(const SkPath& path, bool forceClose,
+        float sqrInvScaleX, float sqrInvScaleY, SkTArray<Vertex, true>* outputVertices) {
+    SK_TRACE_EVENT0("PathRenderer::convexPathPerimeterVertices");
+
 
     // TODO: to support joins other than sharp miter, join vertices should be labelled in the
     // perimeter, or resolved into more vertices. Reconsider forceClose-ing in that case.
@@ -606,7 +628,7 @@ bool PathRenderer::convexPathPerimeterVertices(const SkPath& path, bool forceClo
                     break;
                 case SkPath::kQuad_Verb:
                     ALOGV("kQuad_Verb");
-                    recursiveQuadraticBezierVertices(
+                    RecursiveQuadraticBezierVertices(
                             pts[0].x(), pts[0].y(),
                             pts[2].x(), pts[2].y(),
                             pts[1].x(), pts[1].y(),
@@ -614,7 +636,7 @@ bool PathRenderer::convexPathPerimeterVertices(const SkPath& path, bool forceClo
                     break;
                 case SkPath::kCubic_Verb:
                     ALOGV("kCubic_Verb");
-                    recursiveCubicBezierVertices(
+                    RecursiveCubicBezierVertices(
                             pts[0].x(), pts[0].y(),
                             pts[1].x(), pts[1].y(),
                             pts[3].x(), pts[3].y(),
@@ -626,19 +648,19 @@ bool PathRenderer::convexPathPerimeterVertices(const SkPath& path, bool forceClo
             }
     }
 
-    int size = outputVertices.size();
-    if (size >= 2 && outputVertices[0].position[0] == outputVertices[size - 1].position[0] &&
-            outputVertices[0].position[1] == outputVertices[size - 1].position[1]) {
-        outputVertices.pop();
+    int size = outputVertices->count();
+    if (size >= 2 && (*outputVertices)[0].position[0] == (*outputVertices)[size - 1].position[0] &&
+            (*outputVertices)[0].position[1] == (*outputVertices)[size - 1].position[1]) {
+        outputVertices->pop_back();
         return true;
     }
     return false;
 }
 
-void PathRenderer::recursiveCubicBezierVertices(
+void PathRenderer::RecursiveCubicBezierVertices(
         float p1x, float p1y, float c1x, float c1y,
         float p2x, float p2y, float c2x, float c2y,
-        float sqrInvScaleX, float sqrInvScaleY, Vector<Vertex>& outputVertices) {
+        float sqrInvScaleX, float sqrInvScaleY, SkTArray<Vertex, true>* outputVertices) {
     float dx = p2x - p1x;
     float dy = p2y - p1y;
     float d1 = fabs((c1x - p2x) * dy - (c1y - p2y) * dx);
@@ -668,22 +690,22 @@ void PathRenderer::recursiveCubicBezierVertices(
         float mx = (p1c1c2x + p2c1c2x) * 0.5f;
         float my = (p1c1c2y + p2c1c2y) * 0.5f;
 
-        recursiveCubicBezierVertices(
+        RecursiveCubicBezierVertices(
                 p1x, p1y, p1c1x, p1c1y,
                 mx, my, p1c1c2x, p1c1c2y,
                 sqrInvScaleX, sqrInvScaleY, outputVertices);
-        recursiveCubicBezierVertices(
+        RecursiveCubicBezierVertices(
                 mx, my, p2c1c2x, p2c1c2y,
                 p2x, p2y, p2c2x, p2c2y,
                 sqrInvScaleX, sqrInvScaleY, outputVertices);
     }
 }
 
-void PathRenderer::recursiveQuadraticBezierVertices(
+void PathRenderer::RecursiveQuadraticBezierVertices(
         float ax, float ay,
         float bx, float by,
         float cx, float cy,
-        float sqrInvScaleX, float sqrInvScaleY, Vector<Vertex>& outputVertices) {
+        float sqrInvScaleX, float sqrInvScaleY, SkTArray<Vertex, true>* outputVertices) {
     float dx = bx - ax;
     float dy = by - ay;
     float d = (cx - bx) * dy - (cy - by) * dx;
@@ -701,9 +723,9 @@ void PathRenderer::recursiveQuadraticBezierVertices(
         float mx = (acx + bcx) * 0.5f;
         float my = (acy + bcy) * 0.5f;
 
-        recursiveQuadraticBezierVertices(ax, ay, mx, my, acx, acy,
+        RecursiveQuadraticBezierVertices(ax, ay, mx, my, acx, acy,
                 sqrInvScaleX, sqrInvScaleY, outputVertices);
-        recursiveQuadraticBezierVertices(mx, my, bx, by, bcx, bcy,
+        RecursiveQuadraticBezierVertices(mx, my, bx, by, bcx, bcy,
                 sqrInvScaleX, sqrInvScaleY, outputVertices);
     }
 }
diff --git a/experimental/AndroidPathRenderer/AndroidPathRenderer.h b/experimental/AndroidPathRenderer/AndroidPathRenderer.h
index a17ce9b6e3..64aebfa59e 100644
--- a/experimental/AndroidPathRenderer/AndroidPathRenderer.h
+++ b/experimental/AndroidPathRenderer/AndroidPathRenderer.h
@@ -8,16 +8,15 @@
 #ifndef ANDROID_HWUI_PATH_RENDERER_H
 #define ANDROID_HWUI_PATH_RENDERER_H
 
-#include <utils/Vector.h>
+#include <SkTArray.h>
 
 #include "Vertex.h"
 
+class SkMatrix;
+
 namespace android {
 namespace uirenderer {
 
-class Matrix4;
-typedef Matrix4 mat4;
-
 class VertexBuffer {
 public:
     VertexBuffer():
@@ -56,37 +55,37 @@ private:
 
 class PathRenderer {
 public:
-    static SkRect computePathBounds(const SkPath& path, const SkPaint* paint);
+    static SkRect ComputePathBounds(const SkPath& path, const SkPaint* paint);
 
-    static void convexPathVertices(const SkPath& path, const SkPaint* paint,
-            const mat4 *transform, VertexBuffer& vertexBuffer);
+    static void ConvexPathVertices(const SkPath& path, const SkPaint* paint,
+            const SkMatrix* transform, VertexBuffer* vertexBuffer);
 
 private:
-    static bool convexPathPerimeterVertices(const SkPath &path, bool forceClose,
-        float sqrInvScaleX, float sqrInvScaleY, Vector<Vertex> &outputVertices);
+    static bool ConvexPathPerimeterVertices(const SkPath &path, bool forceClose,
+        float sqrInvScaleX, float sqrInvScaleY, SkTArray<Vertex, true>* outputVertices);
 
 /*
   endpoints a & b,
   control c
  */
-    static void recursiveQuadraticBezierVertices(
+    static void RecursiveQuadraticBezierVertices(
             float ax, float ay,
             float bx, float by,
             float cx, float cy,
             float sqrInvScaleX, float sqrInvScaleY,
-            Vector<Vertex> &outputVertices);
+            SkTArray<Vertex, true>* outputVertices);
 
 /*
   endpoints p1, p2
   control c1, c2
  */
-    static void recursiveCubicBezierVertices(
+    static void RecursiveCubicBezierVertices(
             float p1x, float p1y,
             float c1x, float c1y,
             float p2x, float p2y,
             float c2x, float c2y,
             float sqrInvScaleX, float sqrInvScaleY,
-            Vector<Vertex> &outputVertices);
+            SkTArray<Vertex, true>* outputVertices);
 };
 
 }; // namespace uirenderer
diff --git a/gyp/experimental.gyp b/gyp/experimental.gyp
index 09711ac400..09d5944b52 100644
--- a/gyp/experimental.gyp
+++ b/gyp/experimental.gyp
@@ -6,11 +6,13 @@
       'include_dirs': [
         '../include/config',
         '../include/core',
+        '../experimental/AndroidPathRenderer',
       ],
       'sources': [
         '../experimental/SkSetPoly3To3.cpp',
         '../experimental/SkSetPoly3To3_A.cpp',
         '../experimental/SkSetPoly3To3_D.cpp',
+        '../experimental/AndroidPathRenderer/AndroidPathRenderer.cpp',
       ],
       'direct_dependent_settings': {
         'include_dirs': [