Add GrTextureOp and use to implement SkGpuDevice::drawImage[Rect]() when possible

This op draws a texture rectangle in src over blending with no edge antialiasing. It less powerful than NonAAFillRectOp/GrPaint but has less CPU overhead.

Change-Id: Ia6107bb67c1c2a83de14c665aff64b0de2750fba
Reviewed-on: https://skia-review.googlesource.com/33802
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/gpu/ops/GrTextureOp.h b/src/gpu/ops/GrTextureOp.h
new file mode 100644
index 0000000000..cf6a227769
--- /dev/null
+++ b/src/gpu/ops/GrTextureOp.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrColor.h"
+#include "GrColorSpaceXform.h"
+#include "GrSamplerParams.h"
+
+class GrDrawOp;
+class GrTextureProxy;
+struct SkRect;
+class SkMatrix;
+
+namespace GrTextureOp {
+/**
+ * Creates an op that draws a sub-rectangle of a texture. The passed color is modulated by the
+ * texture's color. 'srcRect' specifies the rectangle of the texture to draw. 'dstRect' specifies
+ * the rectangle to draw in local coords which will be transformed by 'viewMatrix' to be in device
+ * space. 'viewMatrix' must be affine.
+ */
+std::unique_ptr<GrDrawOp> Make(sk_sp<GrTextureProxy>, GrSamplerParams::FilterMode, GrColor,
+                               const SkRect& srcRect, const SkRect& dstRect,
+                               const SkMatrix& viewMatrix, sk_sp<GrColorSpaceXform>,
+                               bool allowSRGBInputs);
+}