Revert "Revert "Don't use GrRRectBlurEffect for large rects when highp is not full float""

This reverts commit 729715298c8af1d2ecc4cbe887eeeb9a1c17c595.

Changed std::abs() to SkScalarAbs() and #include "SkScalar.h"

Change-Id: I9a02ca1a63eef748f9a11d324e8bb89e14571bc9
Reviewed-on: https://skia-review.googlesource.com/127320
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/src/gpu/effects/GrRectBlurEffect.h b/src/gpu/effects/GrRectBlurEffect.h
index 47e9dc3851..8307a49bbe 100644
--- a/src/gpu/effects/GrRectBlurEffect.h
+++ b/src/gpu/effects/GrRectBlurEffect.h
@@ -14,6 +14,7 @@
 
 #include "GrProxyProvider.h"
 #include "SkBlurMask.h"
+#include "SkScalar.h"
 #include "GrFragmentProcessor.h"
 #include "GrCoordTransform.h"
 class GrRectBlurEffect : public GrFragmentProcessor {
@@ -63,7 +64,17 @@ public:
     float sigma() const { return fSigma; }
 
     static std::unique_ptr<GrFragmentProcessor> Make(GrProxyProvider* proxyProvider,
-                                                     const SkRect& rect, float sigma) {
+                                                     const GrShaderCaps& caps, const SkRect& rect,
+                                                     float sigma) {
+        if (!caps.floatIs32Bits()) {
+            // We promote the rect uniform from half to float when it has large values for
+            // precision. If we don't have full float then fail.
+            if (SkScalarAbs(rect.fLeft) > 16000.f || SkScalarAbs(rect.fTop) > 16000.f ||
+                SkScalarAbs(rect.fRight) > 16000.f || SkScalarAbs(rect.fBottom) > 16000.f ||
+                SkScalarAbs(rect.width()) > 16000.f || SkScalarAbs(rect.height()) > 16000.f) {
+                return nullptr;
+            }
+        }
         int doubleProfileSize = SkScalarCeilToInt(12 * sigma);
 
         if (doubleProfileSize >= rect.width() || doubleProfileSize >= rect.height()) {