update playground tests to include all modified cases and fix matrix ordering

Author: flar

impeller/aiks/aiks_unittests.cc

@@ -206,12 +206,23 @@ void CanRenderTiledTexture(AiksTest* aiks_test,
     canvas.DrawRect(Rect::MakeXYWH(0, 0, 600, 600), paint);
   }
 
-  // Should not change the image.
-  PathBuilder path_builder;
-  path_builder.AddCircle({150, 150}, 150);
-  path_builder.AddRoundedRect(Rect::MakeLTRB(300, 300, 600, 600), 10);
-  paint.style = Paint::Style::kFill;
-  canvas.DrawPath(path_builder.TakePath(), paint);
+  {
+    // Should not change the image.
+    PathBuilder path_builder;
+    path_builder.AddCircle({150, 150}, 150);
+    path_builder.AddRoundedRect(Rect::MakeLTRB(300, 300, 600, 600), 10);
+    paint.style = Paint::Style::kFill;
+    canvas.DrawPath(path_builder.TakePath(), paint);
+  }
+
+  {
+    // Should not change the image. Tests the Convex short-cut code.
+    PathBuilder path_builder;
+    path_builder.AddCircle({150, 450}, 150);
+    path_builder.SetConvexity(Convexity::kConvex);
+    paint.style = Paint::Style::kFill;
+    canvas.DrawPath(path_builder.TakePath(), paint);
+  }
 
   ASSERT_TRUE(aiks_test->OpenPlaygroundHere(canvas.EndRecordingAsPicture()));
 }
@@ -3744,6 +3755,29 @@ TEST_P(AiksTest, VerticesGeometryUVPositionData) {
   ASSERT_TRUE(OpenPlaygroundHere(canvas.EndRecordingAsPicture()));
 }
 
+// Regression test for https://github.com/flutter/flutter/issues/135441 .
+TEST_P(AiksTest, VerticesGeometryUVPositionDataWithTranslate) {
+  Canvas canvas;
+  Paint paint;
+  auto texture = CreateTextureForFixture("table_mountain_nx.png");
+
+  paint.color_source = ColorSource::MakeImage(
+      texture, Entity::TileMode::kClamp, Entity::TileMode::kClamp, {},
+      Matrix::MakeTranslation({100.0, 100.0}));
+
+  auto vertices = {Point(0, 0), Point(texture->GetSize().width, 0),
+                   Point(0, texture->GetSize().height)};
+  std::vector<uint16_t> indices = {0u, 1u, 2u};
+  std::vector<Point> texture_coordinates = {};
+  std::vector<Color> vertex_colors = {};
+  auto geometry = std::make_shared<VerticesGeometry>(
+      vertices, indices, texture_coordinates, vertex_colors,
+      Rect::MakeLTRB(0, 0, 1, 1), VerticesGeometry::VertexMode::kTriangleStrip);
+
+  canvas.DrawVertices(geometry, BlendMode::kSourceOver, paint);
+  ASSERT_TRUE(OpenPlaygroundHere(canvas.EndRecordingAsPicture()));
+}
+
 TEST_P(AiksTest, ClearBlendWithBlur) {
   Canvas canvas;
   Paint white;

impeller/entity/geometry/fill_path_geometry.cc

@@ -83,7 +83,7 @@ GeometryResult FillPathGeometry::GetPositionUVBuffer(
   using VS = TextureFillVertexShader;
 
   auto uv_transform =
-      effect_transform * texture_coverage.GetNormalizingTransform();
+      texture_coverage.GetNormalizingTransform() * effect_transform;
 
   if (path_.GetFillType() == FillType::kNonZero &&  //
       path_.IsConvex()) {

impeller/entity/geometry/geometry.cc

@@ -76,7 +76,7 @@ GeometryResult ComputeUVGeometryForRect(Rect source_rect,
   auto& host_buffer = pass.GetTransientsBuffer();
 
   auto uv_transform =
-      effect_transform * texture_coverage.GetNormalizingTransform();
+      texture_coverage.GetNormalizingTransform() * effect_transform;
   std::vector<Point> data(8);
   auto points = source_rect.GetPoints();
   for (auto i = 0u, j = 0u; i < 8; i += 2, j++) {

impeller/entity/geometry/vertices_geometry.cc

@@ -228,7 +228,7 @@ GeometryResult VerticesGeometry::GetPositionUVBuffer(
   auto index_count = indices_.size();
   auto vertex_count = vertices_.size();
   auto uv_transform =
-      effect_transform * texture_coverage.GetNormalizingTransform();
+      texture_coverage.GetNormalizingTransform() * effect_transform;
   auto has_texture_coordinates = HasTextureCoordinates();
   std::vector<VS::PerVertexData> vertex_data(vertex_count);
   {