From 714be33609c9405f197c61339d8a77a91b3353da Mon Sep 17 00:00:00 2001
From: "alokp@chromium.org"
 <alokp@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Date: Sat, 9 Jan 2010 13:40:59 +0000
Subject: Added hello-triangle demo. BUG=26099 TEST=Try running hello_triangle
 executable, you should see a red triangle Review URL:
 http://codereview.chromium.org/539001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@35873 0039d316-1c4b-4281-b951-d872f2087c98
---
 gpu/demos/DEPS                   |  3 ++
 gpu/demos/demos.gyp              | 11 +++++++
 gpu/demos/hello_triangle/main.cc | 66 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+)
 create mode 100644 gpu/demos/DEPS
 create mode 100644 gpu/demos/hello_triangle/main.cc

diff --git a/gpu/demos/DEPS b/gpu/demos/DEPS
new file mode 100644
index 0000000..74c3f98
--- /dev/null
+++ b/gpu/demos/DEPS
@@ -0,0 +1,3 @@
+include_rules = [
+  "+third_party/gles_book_examples",
+]
diff --git a/gpu/demos/demos.gyp b/gpu/demos/demos.gyp
index addfa0a..9bf55d6 100644
--- a/gpu/demos/demos.gyp
+++ b/gpu/demos/demos.gyp
@@ -23,6 +23,17 @@
         'app_framework/platform.h',
       ],
     },
+    {
+      'target_name': 'hello_triangle',
+      'type': 'executable',
+      'dependencies': [
+        'app_framework',
+        '../../third_party/gles_book_examples/gles_book_examples.gyp:hello_triangle',
+      ],
+      'sources': [
+        'hello_triangle/main.cc',
+      ],
+    },
   ]
 }
 
diff --git a/gpu/demos/hello_triangle/main.cc b/gpu/demos/hello_triangle/main.cc
new file mode 100644
index 0000000..ef22208
--- /dev/null
+++ b/gpu/demos/hello_triangle/main.cc
@@ -0,0 +1,66 @@
+// Copyright (c) 2009 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 is a simple example that draws a single triangle with
+// a minimal vertex/fragment shader.  The purpose of this
+// example is to demonstrate the basic concepts of
+// OpenGL ES 2.0 rendering.
+
+#include "gpu/demos/app_framework/application.h"
+#include "third_party/gles_book_examples/Chapter_2/Hello_Triangle/Hello_Triangle.h"
+
+namespace gpu_demos {
+class HelloTriangle : public Application {
+ public:
+  HelloTriangle();
+  ~HelloTriangle();
+
+  bool Init();
+
+ protected:
+  virtual void Draw();
+
+ private:
+  ESContext context_;
+  HTUserData user_data_;
+
+  DISALLOW_COPY_AND_ASSIGN(HelloTriangle);
+};
+
+HelloTriangle::HelloTriangle() {
+  esInitContext(&context_);
+
+  memset(&user_data_, 0, sizeof(HTUserData));
+  context_.userData = &user_data_;
+}
+
+HelloTriangle::~HelloTriangle() {
+  htShutDown(&context_);
+}
+
+bool HelloTriangle::Init() {
+  if (!Application::InitRenderContext()) return false;
+
+  context_.width = width();
+  context_.height = height();
+  if (!htInit(&context_)) return false;
+
+  return true;
+}
+
+void HelloTriangle::Draw() {
+  htDraw(&context_);
+}
+}  // namespace gpu_demos
+
+int main(int argc, char *argv[]) {
+  gpu_demos::HelloTriangle app;
+  if (!app.Init()) {
+    printf("Could not init.\n");
+    return EXIT_FAILURE;
+  }
+
+  app.MainLoop();
+  return EXIT_SUCCESS;
+}
-- 
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