Revert "add tiler for SkDraw"

This reverts commit be1b3971806e3d80aa9673a36e2b35d0145198ac.

Reason for revert: 

Unexpected layout test diffs: https://test-results.appspot.com/data/layout_results/linux_trusty_blink_rel/24989/layout-test-results/results.html

Original change's description:
> add tiler for SkDraw
> 
> Bug: skia:2122
> Change-Id: I276de2064939151eef5fa14c53188e8b5728b7c9
> Reviewed-on: https://skia-review.googlesource.com/110840
> Commit-Queue: Mike Reed <reed@google.com>
> Reviewed-by: Yuqian Li <liyuqian@google.com>

TBR=liyuqian@google.com,reed@google.com

Change-Id: Ia598c0d7c4ac6cfcdb905b847040c250fa366402
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:2122
Reviewed-on: https://skia-review.googlesource.com/112740
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>

1 files changed, 42 insertions, 32 deletions

diff --git a/src/core/SkDraw.cpp b/src/core/SkDraw.cpp
index cf06b7b3b5..21a89ae5a9 100644
--- a/src/core/SkDraw.cpp
+++ b/src/core/SkDraw.cpp
@@ -14,6 +14,7 @@
 #include "SkCanvas.h"
 #include "SkColorData.h"
 #include "SkDevice.h"
+#include "SkDeviceLooper.h"
 #include "SkDraw.h"
 #include "SkDrawProcs.h"
 #include "SkFindAndPlaceGlyph.h"
@@ -784,7 +785,8 @@ void SkDraw::drawRect(const SkRect& prePaintRect, const SkPaint& paint,
         }
     }
 
-    if (!SkRectPriv::FitsInFixed(bbox) && rtype != kHair_RectType) {
+    if (!SkRectPriv::MakeLargeS32().contains(bbox)) {
+        // bbox.roundOut() is undefined; use slow path.
         draw_rect_as_path(*this, prePaintRect, paint, matrix);
         return;
     }
@@ -794,37 +796,45 @@ void SkDraw::drawRect(const SkRect& prePaintRect, const SkPaint& paint,
         return;
     }
 
-    SkAutoBlitterChoose blitterStorage(fDst, *matrix, paint);
-    const SkRasterClip& clip = *fRC;
-    SkBlitter*          blitter = blitterStorage.get();
-
-    // we want to "fill" if we are kFill or kStrokeAndFill, since in the latter
-    // case we are also hairline (if we've gotten to here), which devolves to
-    // effectively just kFill
-    switch (rtype) {
-        case kFill_RectType:
-            if (paint.isAntiAlias()) {
-                SkScan::AntiFillRect(devRect, clip, blitter);
-            } else {
-                SkScan::FillRect(devRect, clip, blitter);
-            }
-            break;
-        case kStroke_RectType:
-            if (paint.isAntiAlias()) {
-                SkScan::AntiFrameRect(devRect, strokeSize, clip, blitter);
-            } else {
-                SkScan::FrameRect(devRect, strokeSize, clip, blitter);
-            }
-            break;
-        case kHair_RectType:
-            if (paint.isAntiAlias()) {
-                SkScan::AntiHairRect(devRect, clip, blitter);
-            } else {
-                SkScan::HairRect(devRect, clip, blitter);
-            }
-            break;
-        default:
-            SkDEBUGFAIL("bad rtype");
+    SkDeviceLooper looper(fDst, *fRC, ir, paint.isAntiAlias());
+    while (looper.next()) {
+        SkRect localDevRect;
+        looper.mapRect(&localDevRect, devRect);
+        SkMatrix localMatrix;
+        looper.mapMatrix(&localMatrix, *matrix);
+
+        SkAutoBlitterChoose blitterStorage(looper.getPixmap(), localMatrix, paint);
+        const SkRasterClip& clip = looper.getRC();
+        SkBlitter*          blitter = blitterStorage.get();
+
+        // we want to "fill" if we are kFill or kStrokeAndFill, since in the latter
+        // case we are also hairline (if we've gotten to here), which devolves to
+        // effectively just kFill
+        switch (rtype) {
+            case kFill_RectType:
+                if (paint.isAntiAlias()) {
+                    SkScan::AntiFillRect(localDevRect, clip, blitter);
+                } else {
+                    SkScan::FillRect(localDevRect, clip, blitter);
+                }
+                break;
+            case kStroke_RectType:
+                if (paint.isAntiAlias()) {
+                    SkScan::AntiFrameRect(localDevRect, strokeSize, clip, blitter);
+                } else {
+                    SkScan::FrameRect(localDevRect, strokeSize, clip, blitter);
+                }
+                break;
+            case kHair_RectType:
+                if (paint.isAntiAlias()) {
+                    SkScan::AntiHairRect(localDevRect, clip, blitter);
+                } else {
+                    SkScan::HairRect(localDevRect, clip, blitter);
+                }
+                break;
+            default:
+                SkDEBUGFAIL("bad rtype");
+        }
     }
 }