Added stencil-test demo.

PS: I have not moved the repeated code to the base class for this demo because this is the last one I intend to submit before starting to port the demos to pepper. I will refactor all the demos to eliminate repeating code in light of pepper framework.
BUG=26099
TEST=Run stencil_test executable. You should see four different-colored quads.
Review URL: http://codereview.chromium.org/545092

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@36410 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 74 insertions, 0 deletions

diff --git a/gpu/demos/demos.gyp b/gpu/demos/demos.gyp
index 5aeaade..99aa697 100644
--- a/gpu/demos/demos.gyp
+++ b/gpu/demos/demos.gyp
@@ -79,6 +79,17 @@
       ],
     },
     {
+      'target_name': 'stencil_test',
+      'type': 'executable',
+      'dependencies': [
+        'app_framework',
+        '../../third_party/gles2_book/gles2_book.gyp:stencil_test',
+      ],
+      'sources': [
+        'stencil_test/main.cc',
+      ],
+    },
+    {
       'target_name': 'texture_wrap',
       'type': 'executable',
       'dependencies': [
diff --git a/gpu/demos/stencil_test/main.cc b/gpu/demos/stencil_test/main.cc
new file mode 100644
index 0000000..a0009cc
--- /dev/null
+++ b/gpu/demos/stencil_test/main.cc
@@ -0,0 +1,63 @@
+// Copyright (c) 2010 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.
+
+// This example shows various stencil buffer operations.
+
+#include "gpu/demos/app_framework/application.h"
+#include "third_party/gles2_book/Chapter_11/Stencil_Test/Stencil_Test.h"
+
+namespace gpu_demos {
+class StencilTest : public Application {
+ public:
+  StencilTest();
+  ~StencilTest();
+
+  bool Init();
+
+ protected:
+  virtual void Draw(float elapsed_sec);
+
+ private:
+  ESContext context_;
+  STUserData user_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(StencilTest);
+};
+
+StencilTest::StencilTest() {
+  esInitContext(&context_);
+
+  memset(&user_data_, 0, sizeof(STUserData));
+  context_.userData = &user_data_;
+}
+
+StencilTest::~StencilTest() {
+  stShutDown(&context_);
+}
+
+bool StencilTest::Init() {
+  if (!Application::InitRenderContext()) return false;
+
+  context_.width = width();
+  context_.height = height();
+  if (!stInit(&context_)) return false;
+
+  return true;
+}
+
+void StencilTest::Draw(float /*elapsed_sec*/) {
+  stDraw(&context_);
+}
+}  // namespace gpu_demos
+
+int main(int argc, char *argv[]) {
+  gpu_demos::StencilTest app;
+  if (!app.Init()) {
+    printf("Could not init.\n");
+    return EXIT_FAILURE;
+  }
+
+  app.MainLoop();
+  return EXIT_SUCCESS;
+}