Start supplying random color space xforms to FP tests

Added helper to create random GrColorSpaceXforms in unit tests, and
hooked it up for the FPs that currently accept one.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2873

Change-Id: Iaf93e379e405fbf745f5e0fd23b4daf017355966
Reviewed-on: https://skia-review.googlesource.com/2873
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

4 files changed, 23 insertions, 3 deletions

diff --git a/src/gpu/GrTestUtils.cpp b/src/gpu/GrTestUtils.cpp
index d5cdbab1fb..7f5cc50efe 100644
--- a/src/gpu/GrTestUtils.cpp
+++ b/src/gpu/GrTestUtils.cpp
@@ -7,6 +7,7 @@
 
 #include "GrTestUtils.h"
 #include "GrStyle.h"
+#include "SkColorSpace.h"
 #include "SkDashPathPriv.h"
 #include "SkMatrix.h"
 #include "SkPath.h"
@@ -289,6 +290,22 @@ SkPathEffect::DashType TestDashPathEffect::asADash(DashInfo* info) const {
     return kDash_DashType;
 }
 
+sk_sp<GrColorSpaceXform> TestColorXform(SkRandom* random) {
+    static sk_sp<GrColorSpaceXform> gXforms[3];
+    static bool gOnce;
+    if (!gOnce) {
+        gOnce = true;
+        sk_sp<SkColorSpace> srgb = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
+        sk_sp<SkColorSpace> adobe = SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named);
+        // No gamut change
+        gXforms[0] = nullptr;
+        // To larger gamut
+        gXforms[1] = GrColorSpaceXform::Make(srgb.get(), adobe.get());
+        // To smaller gamut
+        gXforms[2] = GrColorSpaceXform::Make(adobe.get(), srgb.get());
+    }
+    return gXforms[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gXforms)))];
+}
 
 }  // namespace GrTest
 
diff --git a/src/gpu/effects/GrBicubicEffect.cpp b/src/gpu/effects/GrBicubicEffect.cpp
index 86726c9058..737625ffed 100644
--- a/src/gpu/effects/GrBicubicEffect.cpp
+++ b/src/gpu/effects/GrBicubicEffect.cpp
@@ -205,7 +205,8 @@ sk_sp<GrFragmentProcessor> GrBicubicEffect::TestCreate(GrProcessorTestData* d) {
     for (int i = 0; i < 16; i++) {
         coefficients[i] = d->fRandom->nextSScalar1();
     }
-    return GrBicubicEffect::Make(d->fTextures[texIdx], nullptr, coefficients);
+    auto colorSpaceXform = GrTest::TestColorXform(d->fRandom);
+    return GrBicubicEffect::Make(d->fTextures[texIdx], colorSpaceXform, coefficients);
 }
 
 //////////////////////////////////////////////////////////////////////////////
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index 6eb15e0c31..b05ac834a7 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -91,5 +91,6 @@ sk_sp<GrFragmentProcessor> GrSimpleTextureEffect::TestCreate(GrProcessorTestData
     GrCoordSet coordSet = kCoordSets[d->fRandom->nextULessThan(SK_ARRAY_COUNT(kCoordSets))];
 
     const SkMatrix& matrix = GrTest::TestMatrix(d->fRandom);
-    return GrSimpleTextureEffect::Make(d->fTextures[texIdx], nullptr, matrix, coordSet);
+    auto colorSpaceXform = GrTest::TestColorXform(d->fRandom);
+    return GrSimpleTextureEffect::Make(d->fTextures[texIdx], colorSpaceXform, matrix, coordSet);
 }
diff --git a/src/gpu/effects/GrTextureDomain.cpp b/src/gpu/effects/GrTextureDomain.cpp
index e06c8de801..e809109835 100644
--- a/src/gpu/effects/GrTextureDomain.cpp
+++ b/src/gpu/effects/GrTextureDomain.cpp
@@ -295,9 +295,10 @@ sk_sp<GrFragmentProcessor> GrTextureDomainEffect::TestCreate(GrProcessorTestData
     const SkMatrix& matrix = GrTest::TestMatrix(d->fRandom);
     bool bilerp = mode != GrTextureDomain::kRepeat_Mode ? d->fRandom->nextBool() : false;
     GrCoordSet coords = d->fRandom->nextBool() ? kLocal_GrCoordSet : kDevice_GrCoordSet;
+    auto colorSpaceXform = GrTest::TestColorXform(d->fRandom);
     return GrTextureDomainEffect::Make(
         d->fTextures[texIdx],
-        nullptr,
+        colorSpaceXform,
         matrix,
         domain,
         mode,