++

impeller/geometry/geometry_unittests.cc

@@ -1761,7 +1761,7 @@ TEST(GeometryTest, Gradient) {
 
     auto gradient = CreateGradientBuffer(colors, stops);
 
-    ASSERT_COLOR_BUFFER_NEAR(gradient.color_bytes, colors);
+    ASSERT_COLORS_NEAR(gradient.colors, colors);
     ASSERT_EQ(gradient.texture_size, 2u);
   }
 
@@ -1784,7 +1784,7 @@ TEST(GeometryTest, Gradient) {
 
     auto gradient = CreateGradientBuffer(colors, stops);
 
-    ASSERT_COLOR_BUFFER_NEAR(gradient.color_bytes, colors);
+    ASSERT_COLORS_NEAR(gradient.colors, colors);
     ASSERT_EQ(gradient.texture_size, 4u);
   }
 
@@ -1802,7 +1802,7 @@ TEST(GeometryTest, Gradient) {
         Color::lerp(Color::Blue(), Color::Green(), 0.6666),
         Color::Green(),
     };
-    ASSERT_COLOR_BUFFER_NEAR(gradient.color_bytes, lerped_colors);
+    ASSERT_COLORS_NEAR(gradient.colors, lerped_colors);
     ASSERT_EQ(gradient.texture_size, 5u);
   }
 
@@ -1818,6 +1818,9 @@ TEST(GeometryTest, Gradient) {
     auto gradient = CreateGradientBuffer(colors, stops);
 
     ASSERT_EQ(gradient.texture_size, 1024u);
+    // Large gradients use color buffer for textures
+    ASSERT_EQ(gradient.colors.size(), 0u);
+    ASSERT_EQ(gradient.color_bytes.size(), 1024u * 4);
   }
 }
 

impeller/geometry/geometry_unittests.h

@@ -131,6 +131,23 @@ inline ::testing::AssertionResult ColorBufferNear(
   return ::testing::AssertionSuccess();
 }
 
+inline ::testing::AssertionResult ColorsNear(std::vector<impeller::Color> a,
+                                             std::vector<impeller::Color> b) {
+  if (a.size() != b.size()) {
+    return ::testing::AssertionFailure() << "Colors length does not match";
+  }
+  for (auto i = 0u; i < b.size(); i++) {
+    auto equal =
+        NumberNear(a[i].red, b[i].red) && NumberNear(a[i].green, b[i].green) &&
+        NumberNear(a[i].blue, b[i].blue) && NumberNear(a[i].alpha, b[i].alpha);
+
+    if (!equal) {
+      ::testing::AssertionFailure() << "Colors are not equal.";
+    }
+  }
+  return ::testing::AssertionSuccess();
+}
+
 #define ASSERT_MATRIX_NEAR(a, b) ASSERT_PRED2(&::MatrixNear, a, b)
 #define ASSERT_QUATERNION_NEAR(a, b) ASSERT_PRED2(&::QuaternionNear, a, b)
 #define ASSERT_RECT_NEAR(a, b) ASSERT_PRED2(&::RectNear, a, b)
@@ -141,3 +158,4 @@ inline ::testing::AssertionResult ColorBufferNear(
 #define ASSERT_SIZE_NEAR(a, b) ASSERT_PRED2(&::SizeNear, a, b)
 #define ASSERT_ARRAY_4_NEAR(a, b) ASSERT_PRED2(&::Array4Near, a, b)
 #define ASSERT_COLOR_BUFFER_NEAR(a, b) ASSERT_PRED2(&::ColorBufferNear, a, b)
+#define ASSERT_COLORS_NEAR(a, b) ASSERT_PRED2(&::ColorsNear, a, b)