Re-land: cc: Fix anti-aliasing of axis-aligned quads.

Axis-aligned quads with edges not aligned to pixel boundaries
are rendered incorrectly. These quads need anti-aliasing but
current code that determines if anti-aliasing is needed thinks
that no axis-aligned quads need it.

This fixes the problem by adding alignment to pixel boundaries
as an additional requirement to avoid anti-aliasing.

BUG=169374
TEST=GLRendererPixelTest.AxisAligned,GLRendererShaderTest.DrawSolidColorShader

Review URL: https://chromiumcodereview.appspot.com/12538005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@196534 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 16 insertions, 0 deletions

diff --git a/cc/test/render_pass_test_utils.cc b/cc/test/render_pass_test_utils.cc
index 24cb778..719be7f 100644
--- a/cc/test/render_pass_test_utils.cc
+++ b/cc/test/render_pass_test_utils.cc
@@ -57,6 +57,22 @@ SolidColorDrawQuad* AddClippedQuad(TestRenderPass* pass,
   return quad_ptr;
 }
 
+SolidColorDrawQuad* AddTransformedQuad(TestRenderPass* pass,
+                                       gfx::Rect rect,
+                                       SkColor color,
+                                       const gfx::Transform& transform) {
+  MockQuadCuller quad_sink(&pass->quad_list, &pass->shared_quad_state_list);
+  AppendQuadsData data(pass->id);
+  SharedQuadState* shared_state =
+      quad_sink.UseSharedQuadState(SharedQuadState::Create());
+  shared_state->SetAll(transform, rect.size(), rect, rect, false, 1);
+  scoped_ptr<SolidColorDrawQuad> quad = SolidColorDrawQuad::Create();
+  quad->SetNew(shared_state, rect, color);
+  SolidColorDrawQuad* quad_ptr = quad.get();
+  quad_sink.Append(quad.PassAs<DrawQuad>(), &data);
+  return quad_ptr;
+}
+
 void AddRenderPassQuad(TestRenderPass* to_pass,
                        TestRenderPass* contributing_pass) {
   MockQuadCuller quad_sink(&to_pass->quad_list,