[vr] Measure text render performance if rerendered every run

This perf test rerenders the text texture for every run even though the text did not change. Change-Id: I58454a6698a2a71d082a4476a961d02991963ae3 Reviewed-on: https://chromium-review.googlesource.com/728717 Commit-Queue: Tibor Goldschwendt <[email protected]> Reviewed-by: Christopher Grant <[email protected]> Cr-Commit-Position: refs/heads/master@{#510439}
TLeaves · Oct 20, 2017 · 6f8cbe2 · 6f8cbe2
1 parent f82653a
commit 6f8cbe2
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Showing 3 changed files with 32 additions and 1 deletion.
diff --git a/chrome/browser/vr/elements/textured_element.cc b/chrome/browser/vr/elements/textured_element.cc
@@ -15,6 +15,7 @@ namespace vr {
 
 namespace {
 static bool g_initialized_for_testing_ = false;
+static bool g_rerender_if_not_dirty_for_testing_ = false;
 }
 
 TexturedElement::TexturedElement(int maximum_width)
@@ -36,8 +37,15 @@ void TexturedElement::SetInitializedForTesting() {
   g_initialized_for_testing_ = true;
 }
 
+// static
+void TexturedElement::SetRerenderIfNotDirtyForTesting() {
+  g_rerender_if_not_dirty_for_testing_ = true;
+}
+
 bool TexturedElement::UpdateTexture() {
-  if (!initialized_ || !GetTexture()->dirty() || !IsVisible())
+  if (!initialized_ ||
+      !(GetTexture()->dirty() || g_rerender_if_not_dirty_for_testing_) ||
+      !IsVisible())
     return false;
   sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(
       texture_size_.width(), texture_size_.height());

diff --git a/chrome/browser/vr/elements/textured_element.h b/chrome/browser/vr/elements/textured_element.h
@@ -30,6 +30,7 @@ class TexturedElement : public UiElement {
               const gfx::Transform& model_view_proj_matrix) const final;
 
   static void SetInitializedForTesting();
+  static void SetRerenderIfNotDirtyForTesting();
 
  protected:
   virtual UiTexture* GetTexture() const = 0;

diff --git a/chrome/browser/vr/text_perftest.cc b/chrome/browser/vr/text_perftest.cc
@@ -81,4 +81,26 @@ TEST_F(TextPerfTest, RenderLoremIpsum700Chars) {
   PrintResults("render_lorem_ipsum_700_chars");
 }
 
+TEST_F(TextPerfTest, RenderLoremIpsum100Chars_NoTextChange) {
+  base::string16 text = base::UTF8ToUTF16(kLoremIpsum100Chars);
+  text_element_->SetText(text);
+  TexturedElement::SetRerenderIfNotDirtyForTesting();
+  timer_.Reset();
+  for (size_t i = 0; i < kNumberOfRuns; i++) {
+    RenderAndLapTimer();
+  }
+  PrintResults("render_lorem_ipsum_100_chars_no_text_change");
+}
+
+TEST_F(TextPerfTest, RenderLoremIpsum700Chars_NoTextChange) {
+  base::string16 text = base::UTF8ToUTF16(kLoremIpsum700Chars);
+  text_element_->SetText(text);
+  TexturedElement::SetRerenderIfNotDirtyForTesting();
+  timer_.Reset();
+  for (size_t i = 0; i < kNumberOfRuns; i++) {
+    RenderAndLapTimer();
+  }
+  PrintResults("render_lorem_ipsum_700_chars_no_text_change");
+}
+
 }  // namespace vr