Mac Overlays: Clip display and UV rects

cc/output/overlay_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/base/region.h"
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/output/compositor_frame_metadata.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/output_surface.h"
 #include "cc/output/output_surface_client.h"
@@ skipping 420 matching lines @@
   const QuadList& quad_list = main_pass->quad_list;
   for (QuadList::ConstBackToFrontIterator it = quad_list.BackToFrontBegin();
        it != quad_list.BackToFrontEnd(); ++it) {
     EXPECT_NE(DrawQuad::TEXTURE_CONTENT, it->material);
   }
 
   // Check that the right resource id got extracted.
   EXPECT_EQ(original_resource_id, candidate_list.back().resource_id);
 }
 
+TEST_F(SandwichTest, CroppedSingleOverlay) {
+  scoped_ptr<RenderPass> pass = CreateRenderPass();
+  pass->shared_quad_state_list.back()->is_clipped = true;
+  pass->shared_quad_state_list.back()->clip_rect = gfx::Rect(0, 32, 64, 64);
+
+  TextureDrawQuad* original_quad = CreateFullscreenCandidateQuad(
+      resource_provider_.get(), pass->shared_quad_state_list.back(),
+      pass.get());
+  original_quad->uv_top_left = gfx::PointF(0, 0);
+  original_quad->uv_bottom_right = gfx::PointF(1, 1);
+  unsigned candidate_id = original_quad->resource_id();
+
+  // Add something behind it.
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+  CreateFullscreenOpaqueQuad(resource_provider_.get(),
+                             pass->shared_quad_state_list.back(), pass.get());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  // Check for potential candidates.
+  OverlayCandidateList candidate_list;
+  overlay_processor_->ProcessForOverlays(&pass_list, &candidate_list);
+
+  // Ensure that the display and uv rects have cropping applied to them.
+  ASSERT_EQ(1U, pass_list.size());
+  ASSERT_EQ(2U, candidate_list.size());
+  EXPECT_EQ(candidate_id, candidate_list[1].resource_id);
+  EXPECT_EQ(gfx::RectF(0.f, 32.f, 64.f, 64.f), candidate_list[1].display_rect);
+  EXPECT_EQ(gfx::RectF(0.f, 0.25f, 0.5f, 0.5f), candidate_list[1].uv_rect);
+}
+
 TEST_F(SandwichTest, SuccessfulTwoOverlays) {
   scoped_ptr<RenderPass> pass = CreateRenderPass();
 
   // Add two non-overlapping candidates.
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayTopLeftRect);
   CreateCandidateQuadAt(resource_provider_.get(),
                         pass->shared_quad_state_list.back(), pass.get(),
                         kOverlayBottomRightRect);
@@ skipping 1117 matching lines @@
   renderer_->BeginDrawingFrame(&frame_no_overlays);
   renderer_->FinishDrawingFrame(&frame_no_overlays);
   EXPECT_TRUE(resource_provider_->InUseByConsumer(resource1));
   SwapBuffers();
   EXPECT_FALSE(resource_provider_->InUseByConsumer(resource1));
   Mock::VerifyAndClearExpectations(&scheduler_);
 }
 
 }  // namespace
 }  // namespace cc