Fix dashing bug where hwaa was unintentionally disabled

include/gpu/GrDrawContext.h

Index: include/gpu/GrDrawContext.h
diff --git a/include/gpu/GrDrawContext.h b/include/gpu/GrDrawContext.h
index c4818e5d71df537e141a3c4377f4ac6c9527321a..5dd1a087beabf7eaab215f5d203b22378edf9a4e 100644
--- a/include/gpu/GrDrawContext.h
+++ b/include/gpu/GrDrawContext.h
@@ -9,6 +9,7 @@
 #define GrDrawContext_DEFINED
 
 #include "GrColor.h"
+#include "GrContext.h"
 #include "GrRenderTarget.h"
 #include "SkRefCnt.h"
 #include "SkRegion.h"
@@ -264,6 +265,7 @@ public:
     bool isUnifiedMultisampled() const { return fRenderTarget->isUnifiedMultisampled(); }
     bool hasMixedSamples() const { return fRenderTarget->hasMixedSamples(); }
 
+    const GrCaps* caps() const { return fContext->caps(); }

[bsalomon, 2016/06/07 19:32:09]

IIRC, Rob is fairly adamant that we don't expose caps through here, that we
should see drawContext as complete drawing API that doesn't require the client
to make decisions about how to implement drawing. I pretty much agree with that
(and think isUnifiedMultisampled() and hasMixedSamples() should be removed for
similar reasons).

However, the path renderers are sort of violating the layering. They're
effectively implementing some of the GrDC's draw methods, yet they do it by
going back through the public GrDC API (drawBatch). The long term plan here is
to not install pipelines in batches before they're recorded, allowing multipass
PRs to produce a single GrBatch for their passes. Then, PRs become batch
factories and don't go through the GrDC interface (or even see a GrDC), but
rather are just invoked by GrDC to produce a batch that GrDC enqueues.

Shorter term, we could pass GrCaps in the args structs that GrPR see. I don't
want to ask you to do that work now, though, just to unblock the work you're
trying to do around instancing. So, alternatively, we could just file a bug
about this (not using the disable msaa cap to avoid forcing aa for dashed lines)
and fix it later. I'm going to be messing around with the interface between GrDC
and GrPR and can tackle this over the next few weeks.

     const GrSurfaceDesc& desc() const { return fRenderTarget->desc(); }
     int width() const { return fRenderTarget->width(); }
     int height() const { return fRenderTarget->height(); }