Revert "Use a cached index buffer for triangle fans in GrDefaultPathRenderer."

This reverts commit ddff425b0a9cd4b178c74d7feee2c5c22e37c8d1.

Reason for revert: bad gms

Original change's description:
> Use a cached index buffer for triangle fans in GrDefaultPathRenderer.
> 
> Change-Id: I3c3c8db6506c71e4b273c8bc7adcc68d3d768626
> Reviewed-on: https://skia-review.googlesource.com/124841
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,brianosman@google.com

Change-Id: I701b55f188c949c2ee39b39f9bbf5b233f80f174
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/125040
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 6 insertions, 24 deletions

diff --git a/src/gpu/GrResourceProvider.h b/src/gpu/GrResourceProvider.h
index e8f93b561f..a853f08ca3 100644
--- a/src/gpu/GrResourceProvider.h
+++ b/src/gpu/GrResourceProvider.h
@@ -150,9 +150,9 @@ public:
     /**
      * Returns an index buffer that can be used to render quads.
      * Six indices per quad: 0, 1, 2, 2, 1, 3, etc.
-     * The max number of quads is specified by QuadCountOfQuadBuffer().
+     * The max number of quads is the buffer's index capacity divided by 6.
      * Draw with GrPrimitiveType::kTriangles
-     * @return the quad index buffer
+     * @ return the quad index buffer
      */
     sk_sp<const GrBuffer> refQuadIndexBuffer() {
         if (auto buffer = this->findByUniqueKey<const GrBuffer>(fQuadIndexBufferKey)) {
@@ -164,22 +164,6 @@ public:
     static int QuadCountOfQuadBuffer();
 
     /**
-     * Returns an index buffer that can be used to render triangle fans.
-     * The buffer has the pattern 0, 1, 2, 0, 2, 3, 0, 3, 4 ...
-     * The max number of quads is specified by TriCountOfFanBuffer().
-     * Draw with GrPrimitiveType::kTriangles
-     * @return the fan index buffer
-     */
-    sk_sp<const GrBuffer> refFanIndexBuffer() {
-        if (auto buffer = this->findByUniqueKey<const GrBuffer>(fFanIndexBufferKey)) {
-            return buffer;
-        }
-        return this->createFanIndexBuffer();
-    }
-
-    static int TriCountOfFanBuffer();
-
-    /**
      * Factories for GrPath objects. It's an error to call these if path rendering
      * is not supported.
      */
@@ -311,14 +295,12 @@ private:
                                                      const GrUniqueKey& key);
 
     sk_sp<const GrBuffer> createQuadIndexBuffer();
-    sk_sp<const GrBuffer> createFanIndexBuffer();
 
-    GrResourceCache* fCache;
-    GrGpu* fGpu;
+    GrResourceCache*    fCache;
+    GrGpu*              fGpu;
     sk_sp<const GrCaps> fCaps;
-    GrUniqueKey fQuadIndexBufferKey;
-    GrUniqueKey fFanIndexBufferKey;
-    bool fExplicitlyAllocateGPUResources;
+    GrUniqueKey         fQuadIndexBufferKey;
+    bool                fExplicitlyAllocateGPUResources;
 
     // In debug builds we guard against improper thread handling
     SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;)