Use GrSurfaceContext::read/write-Pixels more

Change-Id: I04bcaf91aa7a43e0563e332c1fe2836d762a04d4
Reviewed-on: https://skia-review.googlesource.com/7520
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

3 files changed, 12 insertions, 0 deletions

diff --git a/include/gpu/GrRenderTargetContext.h b/include/gpu/GrRenderTargetContext.h
index aab105087f..b3f15bef47 100644
--- a/include/gpu/GrRenderTargetContext.h
+++ b/include/gpu/GrRenderTargetContext.h
@@ -343,9 +343,12 @@ public:
     }
 
     GrSurfaceProxy* asDeferredSurface() override { return fRenderTargetProxy.get(); }
+    const GrSurfaceProxy* asDeferredSurface() const override { return fRenderTargetProxy.get(); }
     GrTextureProxy* asDeferredTexture() override;
     GrRenderTargetProxy* asDeferredRenderTarget() override { return fRenderTargetProxy.get(); }
 
+    GrRenderTargetContext* asRenderTargetContext() override { return this; }
+
     sk_sp<GrTexture> asTexture() {
         if (!this->accessRenderTarget()) {
             return nullptr;
diff --git a/include/gpu/GrSurfaceContext.h b/include/gpu/GrSurfaceContext.h
index 6a40f2f8b2..75ee95276e 100644
--- a/include/gpu/GrSurfaceContext.h
+++ b/include/gpu/GrSurfaceContext.h
@@ -14,6 +14,7 @@
 
 class GrAuditTrail;
 class GrContext;
+class GrRenderTargetContext;
 class GrRenderTargetProxy;
 class GrSingleOwner;
 class GrSurface;
@@ -34,6 +35,10 @@ public:
     sk_sp<SkColorSpace> refColorSpace() const { return fColorSpace; }
     bool isGammaCorrect() const { return SkToBool(fColorSpace.get()); }
 
+    // TODO: these two calls would be way cooler if this object had a GrSurfaceProxy pointer
+    int width() const { return this->asDeferredSurface()->width(); }
+    int height() const { return this->asDeferredSurface()->height(); }
+
     /*
      * Copy 'src' into the proxy backing this context
      * @param src       src of pixels
@@ -91,9 +96,12 @@ public:
 
     // TODO: this is virtual b.c. this object doesn't have a pointer to the wrapped GrSurfaceProxy?
     virtual GrSurfaceProxy* asDeferredSurface() = 0;
+    virtual const GrSurfaceProxy* asDeferredSurface() const = 0;
     virtual GrTextureProxy* asDeferredTexture() = 0;
     virtual GrRenderTargetProxy* asDeferredRenderTarget() = 0;
 
+    virtual GrRenderTargetContext* asRenderTargetContext() { return nullptr; }
+
     GrAuditTrail* auditTrail() { return fAuditTrail; }
 
     // Provides access to functions that aren't part of the public API.
diff --git a/include/gpu/GrTextureContext.h b/include/gpu/GrTextureContext.h
index b49b27255a..79a1719ac2 100644
--- a/include/gpu/GrTextureContext.h
+++ b/include/gpu/GrTextureContext.h
@@ -28,6 +28,7 @@ public:
     ~GrTextureContext() override;
 
     GrSurfaceProxy* asDeferredSurface() override { return fTextureProxy.get(); }
+    const GrSurfaceProxy* asDeferredSurface() const override { return fTextureProxy.get(); }
     GrTextureProxy* asDeferredTexture() override { return fTextureProxy.get(); }
     GrRenderTargetProxy* asDeferredRenderTarget() override;